HIV InfectionsPhase 3NCT03446573
Switch Study to Evaluate Dolutegravir Plus Lamivudine in Virologically Suppressed Human Immunodeficiency Virus Type 1 Positive Adults (TANGO)
A Phase 3 study testing DTG + 3TC and TAF based regimen (TBR) in people with HIV Infections, run by ViiV Healthcare at 133 sites in 10 countries.
Trial summary
The aim of the study is to establish if human immunodeficiency virus type 1 (HIV-1) infected adult participants with current virologic suppression on a >=3-drug tenofovir alafenamide (TAF) based regimen (TBR) remain suppressed upon switching to a two-drug regimen of dolutegravir (DTG) 50 milligram (mg) + lamivudine… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- HIV Infections
- What is being tested?
- DTG + 3TC and TAF based regimen (TBR)
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 743 participants
- Where
- 133 sitesin 10 countries
- Study dates
- 18 Jan 2018to 3 May 2022
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Participant must be able to understand and comply with protocol requirements, instructions, and restrictions;
- Participant must be likely to complete the study as planned;
- Participant must be considered an appropriate candidate for participation in an investigative clinical trial with medication (example no active substance abuse, acute major organ disease, or planned long-term work assignments out of the country).
- Aged 18 years or older (or older where required by local regulatory agencies), at the time of signing the informed consent.
- HIV-1 infected men or women.
- Documented evidence of at least two plasma HIV-1 RNA measurements <50 c/mL in the 12 months prior to Screening: one within the 6 to 12 month window, and one within 6 months prior to Screening.
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- Plasma HIV-1 RNA <50 c/mL at Screening.
- Must be on uninterrupted ART for at least 6 months prior to screening. Only the following regimens are allowed:
- Participant on a TAF-based regimen for at least 6 months as the initial regimen, or
- Participants who switched from a tenofovir disoproxil fumarate (TDF) first-regimen TAF, without any changes to the other drugs in their regimen, and have been on the TAF-based regimen for at least 3 months immediately prior to Screening i.e., the only switch made is from TDF to TAF. This switch must have occurred due to tolerability/safety, access to medications, or convenience/simplification, and must NOT have been done for suspected or established treatment failure. A switch from a PI boosted with ritonavir to the same PI boosted with cobicistat is allowed (and vice versa).
- A female participant is eligible to participate if she is not pregnant (as confirmed by a negative serum human chorionic gonadotrophin [hCG] test at screen and a negative urine hCG test at randomization [a local serum hCG test at Randomization is allowed if it can be done, and results obtained, within 24 hours prior to randomization]), not lactating, and at least one of the following conditions applies:
- Non-reproductive potential defined as:
- Pre-menopausal females with one of the following:
- Documented tubal ligation
- Documented hysteroscopic tubal occlusion procedure with follow-up confirmation of bilateral tubal occlusion
- Hysterectomy
- Documented bilateral oophorectomy
- Post-menopausal defined as 12 months of spontaneous amenorrhea (in questionable cases a blood sample with simultaneous follicle stimulating hormone [FSH] and estradiol levels consistent with menopause [refer to laboratory reference ranges for confirmatory levels]). Females on hormone replacement therapy (HRT) and whose menopausal status is in doubt will be required to use one of the highly effective contraception methods if they wish to continue their HRT during the study. Otherwise, they must discontinue HRT to allow confirmation of post-menopausal status prior to study enrolment.
- Reproductive potential and agrees to follow one of the options listed in the Modified List of Highly Effective Methods for Avoiding Pregnancy in Females of Reproductive Potential (FRP) from 30 days prior to the first dose of study medication and for at least 2 weeks after the last dose of study medication.
- The investigator is responsible for ensuring that participants understand how to properly use these methods of contraception. All participants participating in the study should be counseled on safer sexual practices including the use and benefit/risk of effective barrier methods (e.g., male condom) and on the risk of HIV transmission to an uninfected partner.
- Capable of giving signed informed consent, which includes compliance with the requirements and restrictions listed in the consent form and the protocol. Eligible participants or their legal guardians must sign a written informed consent form before any protocol-specified assessments are conducted.
- Participants enrolled in France must be affiliated to, or a beneficiary of, a social security category.
Who cannot join
- Women who are breastfeeding or plan to become pregnant or breastfeed during the study.
- Any evidence of an active Centers for Disease Control and Prevention (CDC) Stage 3 disease, EXCEPT cutaneous Kaposi's sarcoma not requiring systemic therapy. Historical or current CD4 cell counts less than 200 cells/millimeter (mm)^3 are NOT exclusionary.
- Participants with severe hepatic impairment (Class C) as determined by Child-Pugh classification.
- Unstable liver disease (as defined by the presence of ascites, encephalopathy, coagulopathy, hypoalbuminaemia, oesophageal or gastric varices, or persistent jaundice), cirrhosis, known biliary abnormalities (with the exception of Gilbert's syndrome or asymptomatic gallstones).
- Evidence of Hepatitis B virus (HBV) infection based on the results of testing at Screening for Hepatitis B surface antigen (HBsAg), Hepatitis B core antibody (anti-HBc), Hepatitis B surface antigen antibody (anti-HBs) and HBV deoxyribonucleic acid (DNA) as follows: participants positive for HBsAg are excluded; participants negative for anti-HBs but positive for anti-HBc (negative HBsAg status) and positive for HBV DNA are excluded.
- Anticipated need for any hepatitis C virus (HCV) therapy during the first 48 weeks of the study, or anticipated need for HCV therapy based on interferon or for any drugs that have a potential for adverse drug-drug interactions with study treatment throughout the entire study period.
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- Untreated syphilis infection (positive rapid plasma reagin [RPR] at Screening without clear documentation of treatment). Participants who are at least 7 days post completed treatment are eligible.
- History or presence of allergy or intolerance to the study drugs or their components or drugs of their class.
- Ongoing malignancy other than cutaneous Kaposi's sarcoma, basal cell carcinoma, or resected, non-invasive cutaneous squamous cell carcinoma, or cervical, anal or penile intraepithelial neoplasia.
- Participants who in the investigator's judgment, poses a significant suicidality risk.
- Treatment with an HIV-1 immunotherapeutic vaccine within 90 days of Screening.
- Treatment with any of the following agents within 28 days of Screening: radiation therapy; cytotoxic chemotherapeutic agents; any systemic immune suppressant.
- Exposure to an experimental drug or experimental vaccine within either 28 days, 5 half-lives of the test agent, or twice the duration of the biological effect of the test agent, whichever is longer, prior to the first dose of investigational product (IP).
- Use of any regimen consisting of single or dual ART.
- Any evidence of major nucleoside reverse transcriptase inhibitor (NRTI) mutation or presence of any major INSTI resistance-associated mutation in any available prior resistance genotype assay test result, if known, must be provided to ViiV after screening and before randomization for review by ViiV Virology.
- Any verified Grade 4 laboratory abnormality.
- Alanine aminotransferase (ALT) >=5 times (*) the upper limit of normal (ULN) or ALT >=3 * ULN and bilirubin >=1.5 * ULN (with >35 percent [%] direct bilirubin).
- Creatinine clearance of <50 milliliter (mL)/minute/1.73 meter^2 via Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) method.
- Within the 6 to 12 month window prior to Screening and after confirmed suppression to <50 c/mL, any plasma HIV-1 RNA measurement >200 c/mL.
- Within the 6 to 12 month window prior to Screening and after confirmed suppression to <50 c/mL, 2 or more plasma HIV-1 RNA measurements >=50 c/mL.
- Within 6 months prior to Screening and after confirmed suppression to <50 c/mL on current ART regimen, any plasma HIV-1 RNA measurement >=50 c/mL.
- Any drug holiday during the 6 months prior to Screening, except for brief periods (less than 1 month) where all ART was stopped due to tolerability and/or safety concerns.
- Any history of switch to another regimen, defined as change of a single drug or multiple drugs simultaneously, due to virologic failure to therapy (defined as a confirmed plasma HIV-1 RNA ≥400 c/mL.
- Participants enrolled in France (or in other countries as required by local regulations or Ethics Committee/Institutional Review Board [IRB]) who:
- Participated in any study using an investigational drug or vaccine during the previous 60 days or 5 half-lives, or twice the duration of the biological effect of the experimental drug or vaccine, whichever is longer, prior to screening for the study, or
- Participate simultaneously in another clinical study.
Trial locations and contacts
133 sites in 10 countries.
133 sites in 10 countries
United States54 sites
GSK Investigational Site
Atlanta, Georgia, 30309
GSK Investigational Site
Austin, Texas, 78705
GSK Investigational Site
Bakersfield, California, 93301
GSK Investigational Site
Bellaire, Texas, 77401
GSK Investigational Site
Berkley, Michigan, 48072
GSK Investigational Site
Beverly Hills, California, 90211
GSK Investigational Site
Chicago, Illinois, 60613
GSK Investigational Site
Dallas, Texas, 75208
GSK Investigational Site
Dallas, Texas, 75246
GSK Investigational Site
Decatur, Georgia, 30033
GSK Investigational Site
Durham, North Carolina, 27710
GSK Investigational Site
El Paso, Texas, 79935
GSK Investigational Site
Fort Lauderdale, Florida, 33308
GSK Investigational Site
Fort Worth, Texas, 76104
GSK Investigational Site
Ft. Pierce, Florida, 34982
GSK Investigational Site
Houston, Texas, 77098
GSK Investigational Site
Huntersville, North Carolina, 28078
GSK Investigational Site
Indianapolis, Indiana, 46202
GSK Investigational Site
Jacksonville, Florida, 32209
GSK Investigational Site
Kansas City, Missouri, 64111
GSK Investigational Site
Las Vegas, Nevada, 89106
GSK Investigational Site
Long Beach, California, 90806
GSK Investigational Site
Long Beach, California, 90813
GSK Investigational Site
Los Angeles, California, 90027
GSK Investigational Site
Los Angeles, California, 90036
GSK Investigational Site
Los Angeles, California, 90069
GSK Investigational Site
Lynchburg, Virginia, 24501
GSK Investigational Site
Macon, Georgia, 31201
GSK Investigational Site
Memphis, Tennessee, 38105-3678
GSK Investigational Site
Miami, Florida, 33133
GSK Investigational Site
Miami, Florida, 33136
GSK Investigational Site
Miami Beach, Florida, 33140
GSK Investigational Site
Minneapolis, Minnesota, 55407
GSK Investigational Site
Minneapolis, Minnesota, 55415
GSK Investigational Site
Newark, New Jersey, 07102
GSK Investigational Site
Oakland, California, 94602
GSK Investigational Site
Orlando, Florida, 32803
GSK Investigational Site
Philadelphia, Pennsylvania, 19107
GSK Investigational Site
Phoenix, Arizona, 85012
GSK Investigational Site
Rialto, California, 92337
GSK Investigational Site
Sacramento, California, 95825
GSK Investigational Site
San Leandro, California, 94577
GSK Investigational Site
Sarasota, Florida, 34237
GSK Investigational Site
Savannah, Georgia, 31401
GSK Investigational Site
Scottsdale, Arizona, 85260
GSK Investigational Site
Springfield, Massachusetts, 01105
GSK Investigational Site
St Louis, Missouri, 63139
GSK Investigational Site
Syracuse, New York, 13210
GSK Investigational Site
Tampa, Florida, 33614
GSK Investigational Site
The Bronx, New York, 10461
GSK Investigational Site
Torrance, California, 90502
GSK Investigational Site
Washington D.C., District of Columbia, 20005
GSK Investigational Site
Washington D.C., District of Columbia, 20037
GSK Investigational Site
West Palm Beach, Florida, 33407
Spain29 sites
GSK Investigational Site
Alcalá de Henares, 28805
GSK Investigational Site
Alicante, 03010
GSK Investigational Site
Badalona, 08916
GSK Investigational Site
Barcelona, 08025
GSK Investigational Site
Barcelona, 08036
GSK Investigational Site
Cartagena (Murcia), 30202
GSK Investigational Site
Elche, 03203
GSK Investigational Site
Granada, 18014
GSK Investigational Site
Granollers (Barcelona), 08400
GSK Investigational Site
Huelva, 21080
GSK Investigational Site
L'Hospitalet de Llobregat, 08907
GSK Investigational Site
Madrid, 28034
GSK Investigational Site
Madrid, 28040
GSK Investigational Site
Madrid, 28041
GSK Investigational Site
Madrid, 28046
GSK Investigational Site
Majadahonda (Madrid), 28222
GSK Investigational Site
Málaga, 29010
GSK Investigational Site
Marbella, 29603
GSK Investigational Site
Mataró, 08304
GSK Investigational Site
Murcia, 30003
GSK Investigational Site
Murcia, 30008
GSK Investigational Site
Santiago de Compostela, 15706
GSK Investigational Site
Seville, 41013
GSK Investigational Site
Seville, 41041
GSK Investigational Site
Valencia, 46010
GSK Investigational Site
Valencia, 46026
GSK Investigational Site
Vigo, Galicia, 36204
GSK Investigational Site
Vilajoyosa, 3570
GSK Investigational Site
Zaragoza, 50009
Germany12 sites
GSK Investigational Site
Berlin, 10439
GSK Investigational Site
Berlin, 12157
GSK Investigational Site
Cologne, North Rhine-Westphalia, 50668
GSK Investigational Site
Cologne, North Rhine-Westphalia, 50674
GSK Investigational Site
Frankfurt am Main, Hesse, 60596
GSK Investigational Site
Hamburg, 20146
GSK Investigational Site
Hamburg, 20246
GSK Investigational Site
Hanover, Lower Saxony, 30625
GSK Investigational Site
München, 80336
GSK Investigational Site
Munich, Bavaria, 80335
GSK Investigational Site
Munich, Bavaria, 80336
GSK Investigational Site
Munich, Bavaria, 81675
Australia9 sites
GSK Investigational Site
Carlton, Victoria, 3053
GSK Investigational Site
Clayton, Victoria, 3168
GSK Investigational Site
Darlinghurst, New South Wales, 2010
GSK Investigational Site
Darlinghurst, Sydney, New South Wales, 2010
GSK Investigational Site
Fitzroy North, Victoria, 3078
GSK Investigational Site
Fortitude Valley, Queensland, 4006
GSK Investigational Site
Prahran, Victoria, 3181
GSK Investigational Site
Surry Hills, New South Wales, 2010
GSK Investigational Site
Sydney, New South Wales, 2010
France7 sites
GSK Investigational Site
Bordeaux, 33000
GSK Investigational Site
Marseille, 13003
GSK Investigational Site
Nice, 06202
GSK Investigational Site
Paris, 75012
GSK Investigational Site
Paris, 75018
GSK Investigational Site
Paris, 75651
GSK Investigational Site
Tourcoing, 59208
United Kingdom7 sites
GSK Investigational Site
Birmingham, West Midlands, B4 6TH
GSK Investigational Site
Birmingham, WS2 9PS
GSK Investigational Site
Brighton, BN2 1ES
GSK Investigational Site
Bristol, BS10 5NB
GSK Investigational Site
Crumpsall, Manchester, M8 5RB
GSK Investigational Site
Liverpool, L7 8XP
GSK Investigational Site
London, WC1E 6LB
Belgium5 sites
GSK Investigational Site
Antwerp, 2000
GSK Investigational Site
Brussels, 1000
GSK Investigational Site
Brussels, 1090
GSK Investigational Site
Brussels, 1200
GSK Investigational Site
Ghent, 9000
Canada5 sites
GSK Investigational Site
Montreal, Quebec, H2L 4E9
GSK Investigational Site
Montreal, Quebec, H3A 1T1
GSK Investigational Site
Montreal, Quebec, H4A 3J1
GSK Investigational Site
Toronto, Ontario, M5G 2N2
GSK Investigational Site
Winnipeg, Manitoba, R3A 1R9
Japan4 sites
GSK Investigational Site
Aichi, 460-0001
GSK Investigational Site
Chiba, 260-8677
GSK Investigational Site
Tokyo, 108-8639
GSK Investigational Site
Tokyo, 173-8606
About this study
Official title: A Phase III, Randomized, Multicenter, Parallel-group, Non-inferiority Study Evaluating the Efficacy, Safety, and Tolerability of Switching to Dolutegravir Plus Lamivudine in HIV-1 Infected Adults Who Are Virologically Suppressed
The aim of the study is to establish if human immunodeficiency virus type 1 (HIV-1) infected adult participants with current virologic suppression on a >=3-drug tenofovir alafenamide (TAF) based regimen (TBR) remain suppressed upon switching to a two-drug regimen of dolutegravir (DTG) 50 milligram (mg) + lamivudine (3TC) 300 mg. This study will also provide important information regarding the safety and participant satisfaction with this two-drug regimen. The primary objective of this trial is to demonstrate the non-inferior antiviral activity of switching to DTG + 3TC once daily compared to continuation of TBR over 48 weeks in HIV-1 infected, antiretroviral therapy (ART)-experienced, virologically suppressed participants. This study also will characterize the long-term antiviral activity, tolerability and safety of DTG + 3TC compared to TBR through Week 144 and characterize the long-term antiviral activity, tolerability and safety of DTG + 3TC through Week 200.
This will be a 200-week, Phase III, randomized, open-label, active-controlled, multicenter, parallel- group study. The study will include a screening phase (up to 28 days), a randomized early switch phase (Day 1 up to Week 148), a randomized late switch phase (Week 148 up to Week 200), and a continuation phase (post Week 200). HIV-1 infected adults on stable TBR will be randomized 1:1 to switch to DTG + 3TC once daily for up to 200 weeks, or to continue their TBR for 148 weeks, at which time and if HIV-1 ribonucleic acid (RNA) <50 copies per milliliter (c/mL) at Week 144, these participants will switch to DTG + 3TC up to Week 200.
- Conditions
- HIV Infections
- Being tested
- DTG + 3TC, TAF based regimen (TBR)
- Keywords
- Switch study, Non-inferiority, Human immunodeficiency virus type 1, Tenofovir alafenamide, Dolutegravir, Lamivudine
- Medical subject headings
- HIV Infections, Acquired Immunodeficiency Syndrome
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
DTG + 3TCDrug
DTG+3TC is supplied as white, oval, film-coated, fixed dose combination tablet. The tablets will be available in packed high density polyethylene (HDPE) bottles with induction seals and child-resistant closures.
TAF based regimen (TBR)Drug
Participants will continue to receive their TBR.
| Study group | Role | What they receive |
|---|---|---|
| DTG + 3TC 50 mg/300 mg | Experimental | Participants will receive a single tablet of a two-drug regimen of DTG 50 mg + 3TC 300 mg once daily from Day 1 through Week 200 (Early and Late Switch Phase). Receives: Drug: DTG + 3TC |
| TAF based regimen (TBR) | Active comparator | Participants will continue their TBR from Day 1 to Week 148 (Early Switch Phase), and eligible participants will switch to DTG + 3TC once daily from Week 148 to 200 (Late Switch Phase). Receives: Drug: TAF based regimen (TBR) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Percentage of Participants With Virologic Failure Endpoint as Per Food and Drug Administration (FDA) Snapshot Category at Week 48
Percentage of participants with virologic failure (plasma HIV-1 RNA >=50 c/mL) was evaluated using FDA snapshot algorithm at Week 48. The Snapshot algorithm treated all participants without HIV-1 RNA data at the visit of interest (due to missing data or discontinuation of investigational product prior to the visit window) as non-responders, as well as participants who switch their concomitant antiretroviral therapy (ART) prior to the visit of interest. Intent-to-treat exposed (ITT-E) Population comprises of all randomized participants who received at least one dose of study treatment either DTG + 3TC or TBR. Participants were assessed according to the treatment to which the participant was randomized. Any participant receiving a treatment randomization number was considered to be randomized.
Measured: Week 48
Secondary outcomes (64)
Percentage of Participants With Plasma HIV-1 RNA <50 c/mL as Per Snapshot Algorithm at Week 48
Percentage of participants with plasma HIV-1 RNA <50 c/mL (virologic success) was evaluated using FDA snapshot algorithm at Week 48 to demonstrate the non-inferior antiviral activity of switching to DTG +3TC once daily compared to continuation of TBR over 48 weeks. The Snapshot algorithm treated all participants without HIV-1 RNA data at the visit of interest (due to missing data or discontinuation of investigational product prior to the visit window) as non-responders, as well as participants who switch their concomitant ART prior to the visit of interest.
Measured: Week 48
Percentage of Participants With Virologic Failure Endpoint as Per FDA Snapshot Category at Week 24
Percentage of participants with plasma HIV-1 RNA >=50 c/mL was evaluated using FDA snapshot algorithm at Week 24. The Snapshot algorithm treated all participants without HIV-1 RNA data at the visit of interest (due to missing data or discontinuation of investigational product prior to the visit window) as non-responders, as well as participants who switch their concomitant ART prior to the visit of interest.
Measured: Week 24
Percentage of Participants With Virologic Failure Endpoint as Per FDA Snapshot Category at Weeks 96, 144
Percentage of participants with plasma HIV-1 RNA >=50 c/mL was evaluated using FDA snapshot algorithm at Weeks 96 and 144.
Measured: Weeks 96 and 144
Percentage of Participants With Plasma HIV-1 RNA <50 c/mL as Per Snapshot Algorithm at Week 24
Percentage of participants with plasma HIV-1 RNA <50 c/mL was evaluated using FDA snapshot algorithm at Week 24. The Snapshot algorithm treated all participants without HIV-1 RNA data at the visit of interest (due to missing data or discontinuation of investigational product prior to the visit window) as non-responders, as well as participants who switch their concomitant ART prior to the visit of interest. Percentage values are rounded off.
Measured: Week 24
Percentage of Participants With Plasma HIV-1 RNA <50 c/mL as Per Snapshot Algorithm at Weeks 96 and 144
Percentage of participants with plasma HIV-1 RNA <50 c/mL was evaluated using FDA snapshot algorithm at Weeks 96 and 144.
Measured: Weeks 96 and 144
Change From Baseline in CD4+ Cell Count at Weeks 24 and 48
CD4+ cells are type of white blood cells that fight infection and as HIV infection progresses, the number of these cells declines. Blood samples were collected at specified time points to assess CD4+. It was evaluated by flow cytometry. Baseline value is defined as the latest pre-dose assessment with a non-missing value (Day 1). Change from Baseline is defined as post-dose visit value minus Baseline value. One participant randomized to TBR but received TDF-based regimen and was presented within the "TBR (TAF-based regimen) arm" as efficacy of TAF and TDF are comparable.
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in CD4+ Cell Count at Weeks 96 and 144
CD4+ cells are a type of white blood cells that fight infection and as HIV infection progresses, the number of these cells declines. Blood samples were collected at specified time points to assess CD4+and evaluated by flow cytometry. Baseline value is defined as the latest pre-dose assessment with a non-missing value (Day 1). Change from Baseline is defined as post-dose visit value minus Baseline value. One participant randomized to TBR but received TDF-based regimen and was presented within the "TBR (TAF-based regimen) arm" as efficacy of TAF and TDF are comparable
Measured: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in CD4+/CD8+ Cell Count Ratio at Weeks 24 and 48
Blood samples were collected at specified time points to assess CD4+/CD8+ cell count ratio. It was assessed by flow cyclometry to evaluate the immunologic activity of switching to DTG+3TC once daily compared to continuation of TBR over 48 Weeks. Baseline (Day 1) values were the actual CD4+ cell count ratio values at pre-dose Day 1. Change from Baseline is defined as post-dose visit value minus Baseline value. One participant randomized to TBR but received TDF-based regimen and was presented within the "TBR (TAF-based regimen) arm" as efficacy of TAF and TDF are comparable .
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in CD4+/CD8+ Cell Count Ratio at Weeks 96 and 144
Blood samples were collected at specified time points to assess CD4+/CD8+ cell count ratio and were evaluated by flow cyclometry to evaluate the immunologic activity of switching to DTG+3TC once daily compared to continuation of TBR over Weeks 96 and 144. Baseline (Day 1) values are the actual CD4+ cell count ratio values at pre-dose Day 1. Change from Baseline is defined as post-dose visit value minus Baseline value. One participant randomized to TBR but received TDF-based regimen and was presented within the "TBR (TAF-based regimen) arm" as efficacy of TAF and TDF are comparable
Measured: Baseline (Day 1) and at Weeks 96 and 144
Number of Participants With Disease Progression at Weeks 24 and 48
HIV-associated conditions were recorded during the study and were assessed according to the 2014 CDC Classification System for HIV Infection in Adults. CDC classification for HIV were: Stage 1: No AIDS defining condition and CD4+ T-lymphocyte count: >=500 cells/mcL; Stage 2: No AIDS infection and CD4+ lymphocyte count: 200-499 cell/mcL and Stage 3:Documented AIDS defining condition or CD4+ T-lymphocye count <200 cells/mcL. Disease progression summarize participants who had HIV infection stage 3 associated conditions or death. Indicators of clinical disease progression were defined as: CDC Category Stage 1 at enrollment to Stage 3 event; CDC Category Stage 2 at enrollment to Stage 3 event; CDC Category Stage 3 at enrollment to New Stage 3 Event; CDC Category Stage 1, 2 or 3 at enrollment to Death.
Measured: At Weeks 24 and 48
Number of Participants With Disease Progression at Weeks 96 and 144
HIV-associated conditions were recorded during the study and assessed according to the 2014 CDC Classification System for HIV Infection in Adults. CDC classification for HIV is: Stage 1: No AIDS defining condition and CD4+ T-lymphocyte count: >=500 cells/mcL; Stage 2: No AIDS infection and CD4+ lymphocyte count: 200-499 cell/mcL and Stage 3: Documented AIDS-defining condition or CD4+ T-lymphocye count <200 cells/mcL. Indicators of clinical disease progression is defined as: CDC Category Stage 1 at enrollment to Stage 3 event; CDC Category Stage 2 at enrollment to Stage 3 event; CDC Category Stage 3 at enrollment to New Stage 3 Event; CDC Category Stage 1, 2 or 3 at enrollment to Death.
Measured: At Weeks 96 and 144
Number of Participants With Any Serious Adverse Events (SAEs) and Common (>=2%) Non-serious Adverse Events (Non-SAEs): Up to Week 48
An AE is any untoward medical occurrence temporally associated with the use of a study treatment, whether or not considered related to study treatment. A SAE is any untoward medical occurrence that, at any dose results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent disability/incapacity, is a congenital anomaly/birth defect, associated with liver injury and impaired liver function or any other important medical event as per medical or scientific judgment . Safety Population included all participants who received at least one dose of study treatment either DTG + 3TC or TBR. This population was based on the treatment the participant actually received. Number of participants with any SAE and common (>=2%) non-SAEs are presented.
Measured: Up to Week 48
Number of Participants Randomized to TBR Arm Receiving TDF-based Regimen With Any SAEs and Common (>=2%) Non-SAEs: Up to Week 48
An AE is any untoward medical occurrence temporally associated with the use of a study treatment, whether or not considered related to study treatment. A SAE is any untoward medical occurrence that, at any dose results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent disability/incapacity, is a congenital anomaly/birth defect, associated with liver injury and impaired liver function or any other important medical event as per medical or scientific judgment . Number of TDF-based regimen participants with any SAE and common (>=2%) non-SAEs are presented.
Measured: Up to Week 48
Number of Participants With Any SAEs and Common (>=2%) Non-SAEs: Up to Week 148
An AE is any untoward medical occurrence temporally associated with the use of a study treatment, whether or not considered related to study treatment. A SAE is any untoward medical occurrence that, at any dose results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent disability/incapacity, is a congenital anomaly/birth defect, associated with liver injury and impaired liver function or any other important medical event as per medical or scientific judgment
Measured: Up to Week 148
Number of Participants With AEs by Their Severity Grades: Up to Week 48
An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. Adverse events were evaluated by the investigator and graded according to the Division of Acquired Immunodeficiency Syndrome (DAIDS) toxicity scales from Grade 1 to 5 (1=Mild, 2=Moderate, 3=Severe, 4=Potentially life threatening, 5=Death). The higher the grade, the more severe the symptoms. Number of participants with adverse events by maximum grade have been presented.
Measured: Up to Week 48
Number of Participants Randomized to TBR Arm Receiving TDF-based Regimen With AEs by Their Severity Grades: Up to Week 48
An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. Adverse events were evaluated by the investigator and graded according to the DAIDS toxicity scales from Grade 1 to 5 (1=Mild, 2=Moderate, 3=Severe, 4=Potentially life threatening, 5=Death). The higher the grade, the more severe the symptoms. Number of TDF-based regimen participants with adverse events by maximum grade have been presented.
Measured: Up to Week 48
Number of Participants With AEs by Their Severity Grades: Up to Week 144
An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. Adverse events were evaluated by the investigator and graded according to the Division of Acquired Immunodeficiency Syndrome (DAIDS) toxicity scales from Grade 1 to 5 (1=Mild, 2=Moderate, 3=Severe, 4=Potentially life threatening, 5=Death). The higher the grade, the more severe the symptoms. Number of participants with adverse events by maximum grade have been presented.
Measured: Up to Week 144
Number of Participants Who Discontinued the Treatment Due to AEs: Up to Week 48
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study treatment, whether or not considered related to the study treatment. Number of participants who discontinued the treatment due to adverse events have been presented.
Measured: Up to Week 48
Number of Participants Randomized to TBR Arm Receiving TDF-based Regimen Who Discontinued the Treatment Due to AEs: Up to Week 48
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study treatment, whether or not considered related to the study treatment. Number of participants who discontinued the treatment due to adverse events have been presented.
Measured: Up to Week 48
Number of Participants Who Discontinued the Treatment Due to AEs: Up to Week 144
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study treatment, whether or not considered related to the study treatment.
Measured: Up to Week 144
Number of Participants With Maximum Post-Baseline Emergent Hematology Toxicities: Up to Week 48
Blood samples were collected up to Week 48 for the analysis of hematology parameters-platelet count, neutrophils, hemoglobin and leukocytes. Any abnormality in hematology parameters were evaluated according to the DAIDS toxicity scale from Grade 1 to 4: Grade 1 (mild), Grade 2 (moderate), Grade 3 (severe) and Grade 4 (Potentially life-threatening). The higher the grade, the more severe the symptoms. Only those participants with maximum post-Baseline emergent hematology toxicities in any of the hematology parameters have been presented.
Measured: Up to Week 48
Number of Participants Randomized to TBR Arm Receiving TDF-based Regimen With Maximum Post-Baseline Emergent Hematology Toxicities: Up to Week 36
Blood samples were collected up to the Week 36 visit for the analysis of hematology parameters-platelet count, neutrophils, hemoglobin and leukocytes. Any abnormality in hematology parameters were evaluated according to the DAIDS toxicity scale from Grade 1 to 4: Grade 1 (mild), Grade 2 (moderate), Grade 3 (severe) and Grade 4 (Potentially life-threatening). The higher the grade, the more severe the symptoms. Only those TDF-based regimen participants with maximum post-Baseline emergent hematology toxicities in any of the hematology parameters have been presented.
Measured: Up to Week 36
Number of Participants With Maximum Post-Baseline Emergent Hematology Toxicities: Up to Week 144
Blood samples were collected up to Week 144 for the analysis of hematology parameters-platelet count, neutrophils, hemoglobin and leukocytes. Any abnormality in hematology parameters are were evaluated according to the DAIDS toxicity scale from Grade 1 to 4: Grade 1 (mild), Grade 2 (moderate), Grade 3 (severe) and Grade 4 (Potentially life-threatening). The higher the grade, the more severe the symptoms.
Measured: Up to Week 144
Number of Participants With Maximum Post-Baseline Emergent Clinical Chemistry Toxicities: Up to Week 48
Blood samples were collected up to Week 48 for the analysis of clinical chemistry parameters: alanine aminotransferase (ALT), albumin, alkaline phosphate (ALP), aspartate aminotransferase (AST), bilirubin, carbon dioxide (CO2), cholesterol, creatinine kinase (CK), creatinine, direct bilirubin, glomerular filtration rate (GFR) from creatinine adjusted for body surface area (BSA), GFR from cystatin C adjusted using chronic kidney disease-epidemiology collaboration (CKD-EPI), hypercalcemia, hyperglycemia, hyperkalemia, hypernatremia, hypocalcemia, hypoglycemia, hypokalemia, hyponatremia, low density lipoprotein (LDL) cholesterol, phosphate and triglycerides. Any abnormality in clinical chemistry parameters were evaluated according to the DAIDS toxicity scale From Grade 1 to 4: Grade 1 (mild), Grade 2 (moderate), Grade 3 (severe) and Grade 4 (Potentially life-threatening). The higher the grade, the more severe the symptoms.
Measured: Up to Week 48
Number of Participants Randomized to TBR Arm Receiving TDF-based Regimen With Maximum Post-Baseline Emergent Clinical Chemistry Toxicities: Up to Week 36
samples were collected up to the Week 36 visit for the analysis of clinical chemistry parameters: alanine aminotransferase (ALT), albumin, alkaline phosphate (ALP), aspartate aminotransferase (AST), bilirubin, carbon dioxide (CO2), cholesterol, creatinine kinase (CK), creatinine, direct bilirubin, glomerular filtration rate (GFR) from creatinine adjusted using chronic kidney disease-epidemiology collaboration (CKD-EPI), GFR from cystatin C adjusted using CKD-EPI, hypercalcemia, hyperglycemia, hyperkalemia, hypernatremia, hypocalcemia, hypoglycemia, hypokalemia, hyponatremia, low density lipoprotein (LDL) cholesterol, phosphate and triglycerides. Any abnormality in clinical chemistry parameters were evaluated according to the DAIDS toxicity scale From Grade 1 to 4: Grade 1 (mild), Grade 2 (moderate), Grade 3 (severe) and Grade 4 (Potentially life-threatening). The higher the grade, the more severe the symptoms.
Measured: Up to Week 36
Number of Participants With Maximum Post-Baseline Emergent Clinical Chemistry Toxicities: Up to Week 144
Blood samples were collected up to Week 144 for the analysis of clinical chemistry parameters: ALT, albumin, ALP, AST, bilirubin, CO2, cholesterol, CK, creatinine, direct bilirubin, GFR from creatinine adjusted for BSA, GFR from cystatin C adjusted using CKD-EPI, hypercalcemia, hyperglycemia, hyperkalemia, hypernatremia, hypocalcemia, hypoglycemia, hypokalemia, hyponatremia, LDL cholesterol, phosphate triglycerides and lactate dehydrogenase. Any abnormality in clinical chemistry parameters were evaluated according to the DAIDS toxicity scale From Grade 1 to 4: Grade 1 (mild), Grade 2 (moderate), Grade 3 (severe) and Grade 4 (Potentially life-threatening). The higher the grade, the more severe the symptoms.
Measured: Up to Week 144
Change From Baseline in Renal Biomarkers- Urine Albumin/Creatinine (UA/C) Ratio and Urine Protein/Creatinine (UP/C) Ratio at Weeks 24 and 48
Urine samples were collected at Baseline, Week 24 and Week 48. Baseline is defined as Day 1. Change from Baseline in UA/C was calculated as UA/C ratio at post-Baseline visit minus UA/C ratio calculated at Baseline. Estimated geometric mean adjusted ratio (each visit over Baseline) and 95% CI have been presented. Change from Baseline in UP/C and UA/C was calculated as UP/C and UA/C ratio at post-Baseline visit minus UP/C and UA/C ratio calculated at Baseline, respectively. Estimated geometric mean adjusted ratio (each visit over Baseline) and 95% CI have been presented. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- UA/C Ratio and UP/C Ratio at Weeks 24 and 48 in Participants Randomized to TBR Receiving TDF-based Regimen
Urine samples were collected at Baseline, Week 24 and Week 48 to assess renal biomarkers - urine albumin/creatinine ratio and urine protein/creatinine ratio. Baseline was defined as the latest pre-dose assessment value with a non-missing value. (Day 1). Change from Baseline in UA/C was calculated as UA/C ratio at post-Baseline visit minus UA/C ratio calculated at Baseline. Change from Baseline in UP/C was calculated as UP/C ratio at post-Baseline visit minus UP/C ratio calculated at Baseline. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- UA/C Ratio and UP/C Ratio at Weeks 96 and 144
Urine samples were collected at Baseline, Weeks 96 and 144. Baseline is defined as Day 1. Change from Baseline in UA/C is defined as UA/C ratio at post-Baseline visit minus UA/C ratio at Baseline. Change from Baseline in UP/C and UA/C is defined as UP/C and UA/C ratio at post-Baseline visit minus UP/C and UA/C ratio at Baseline, respectively. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen.
Measured: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in Renal Biomarkers- Urine Beta-2 Microglobulin/Urine Creatinine Ratio at Weeks 24 and 48
Urine biomarker samples were collected at Baseline, Weeks 24 and 48 to assess urine beta-2 microglobulin/urine creatinine. Geometric mean ratio (visit divided by Baseline) and 95% CI of geometric mean ratio has been presented. Baseline (Day 1) value was the value from the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline in urine beta-2-microglobulin/urine creatinine was calculated as urine beta-2-microglobulin/urine creatinine ratio at post-Baseline visit minus urine beta-2-microglobulin/urine creatinine ratio calculated at Baseline. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- Urine Beta-2 Microglobulin/Urine Creatinine Ratio at Weeks 24 and 48 in Participants Randomized to TBR Arm Receiving TDF-based Regimen
Urine biomarker samples were collected to assess urine beta-2 microglobulin/urine creatinine. Baseline (Day 1) value was the value from the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline in urine beta-2-microglobulin/urine creatinine was calculated as urine beta-2-microglobulin/urine creatinine ratio at post-Baseline visit minus urine beta-2-microglobulin/urine creatinine ratio calculated at Baseline. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- Urine Beta-2 Microglobulin/Urine Creatinine Ratio at Weeks 96 and 144
Urine biomarker samples were collected at Baseline, Weeks 96 and 144 to assess urine beta-2 microglobulin/urine creatinine. Baseline (Day 1) value is the value from the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline in urine beta-2-microglobulin/urine creatinine is defined as urine beta-2-microglobulin/urine creatinine ratio at post-Baseline visit minus urine beta-2-microglobulin/urine creatinine ratio at Baseline. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen.
Measured: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in Renal Biomarkers- Urine Phosphate at Weeks 24 and 48
Urine biomarker samples were collected at Baseline and at Weeks 24 and 48 to assess urine phosphate. Geometric mean ratio (visit divided by Baseline) and 95% CI of geometric mean ratio has been presented. Baseline (Day 1) value was the value from the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline in urine phosphate was calculated as urine phosphate at post-Baseline visit minus urine phosphate calculated at Baseline. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- Urine Phosphate at Weeks 24 and 48 in Participants Randomized to TBR Arm Receiving TDF-based Regimen
Urine biomarker samples were collected to assess urine phosphate. Baseline (Day 1) value was the value from the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline in urine phosphate was calculated as urine phosphate at post-Baseline visit minus urine phosphate calculated at Baseline. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- Urine Phosphate at Weeks 96 and 144
Urine biomarker samples were collected at Baseline, Weeks 96 and 144 to assess urine phosphate. Baseline (Day 1) value is the value from the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline in urine phosphate is defined as urine phosphate at post-Baseline visit minus urine phosphate at Baseline. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen
Measured: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in Renal Biomarkers- Urine Retinol Binding Protein 4/Urine Creatinine at Weeks 24 and 48
Urine biomarker samples were collected at Baseline, Weeks 24 and 48 to assess urine retinol binding protein 4/urine creatinine. Geometric mean ratio (visit divided by Baseline) and 95% CI of geometric mean ratio has been presented. Baseline (Day 1) value was the value from the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline in Urine retinol binding protein 4/urine creatinine ratio was calculated as Urine retinol binding protein 4/urine creatinine ratio at post-Baseline visit minus Urine retinol binding protein 4/urine creatinine ratio calculated at Baseline. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- Urine Retinol Binding Protein 4/Urine Creatinine at Weeks 24 and 48 in Participants Randomized to TBR Arm Receiving TDF-based Regimen
Urine biomarker samples were collected to assess urine retinol binding protein 4/urine creatinine. Baseline (Day 1) value was the value from the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline in urine retinol binding protein 4/urine creatinine was calculated as urine retinol binding protein 4/urine creatinine ratio at post-Baseline visit minus urine retinol binding protein 4/urine creatinine ratio calculated at Baseline. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- Urine Retinol Binding Protein 4/Urine Creatinine at Weeks 96 and 144
Urine biomarker samples were collected at Baseline, Weeks 96 and 144 to assess urine retinol binding protein 4/urine creatinine. Baseline (Day 1) value is the value from the latest pre-dose assessment with a non-missing value, including those from unscheduled visits. Change from Baseline in Urine retinol binding protein 4/urine creatinine ratio is defined as Urine retinol binding protein 4/urine creatinine ratio at post-Baseline visit minus Urine retinol binding protein 4/urine creatinine ratio at Baseline. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen
Measured: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in Fasting Lipids at Weeks 24 and 48
Blood samples were collected at Baseline (Day 1), Week 24 and Week 48 to assess fasting lipids which included plasma cholesterol, plasma LDL cholesterol, plasma high density lipoprotein (HDL) cholesterol and plasma triglycerides. Baseline value was the value from the latest pre-dose assessment with a non-missing value (Day 1). Change from Baseline is defined as post-dose visit value minus Baseline value. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Fasting Lipids at Weeks 24 and 48 in Participants Randomized to TBR Arm Receiving TDF-based Regimen
Blood samples were collected at Baseline (Day 1), weeks 24 and 48 visit (participant withdrew from the study at Week 36) to assess fasting lipids which included plasma cholesterol, plasma LDL cholesterol, plasma HDL cholesterol and plasma triglycerides. Baseline value was the value from the latest pre-dose assessment with a non-missing value (Day 1). Change from Baseline is defined as post-dose visit value minus Baseline value. Change from Baseline values for fasting lipids in TDF-based regimen participants has been presented. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Fasting Lipids at Weeks 96 and 144
Blood samples were collected at Baseline (Day 1), Weeks 96 and 144 to assess fasting lipids which includes plasma cholesterol, plasma LDL cholesterol, plasma HDL cholesterol and plasma triglycerides. Baseline value is the value from the latest pre-dose assessment with a non-missing value (Day 1). Change from Baseline is defined as post-dose visit value minus Baseline value. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen.
Measured: Baseline (Day 1) and at Weeks 96 and 144
Number of Participants With Genotypic Resistance: Up to Week 48
Plasma samples were collected for drug resistance testing. Number of participants, who met confirmed virologic withdrawal (CVW) criteria (one plasma HIV-1 RNA >=200 c/mL after Day 1 with immediate prior HIV RNA >=50 c/mL), with genotypic resistance to INSTI, nucleoside reverse transcriptase inhibitor (NRTI), NNRTI and PI was summarized.
Measured: Up to Week 48
Number of Participants With Genotypic Resistance: Up to Week 144
Plasma samples were collected for drug resistance testing. Number of participants, who meet CVW criteria (one plasma HIV-1 RNA >=200 c/mL after Day 1 with immediate prior HIV RNA >=50 c/mL), with genotypic resistance to INSTI, NRTI, NNRTI and PI are summarized.
Measured: Up to Week 144
Number of Participants With Phenotypic Resistance: Up to Week 48
Number of participants, who meet CVW criteria (one plasma HIV-1 RNA >=200 c/mL after Day 1 with immediate prior HIV RNA >=50 c/mL), with phenotypic resistance to INSTI, NNRTI,NRTI and PI were summarized. Assessment of antiviral activity of ART using phenotypic test results was interpreted through a proprietary algorithm (from Monogram Biosciences), which provided the overall susceptibility of the drug. Partially sensitive and resistant calls were considered resistant in this analysis. The phenotypic resistance was calculated using binary scoring system, where 0 was considered as sensitive and 1 as resistance. Phenotypic Resistance data for the following INSTI, NNRTI, NRTI and PI drugs in participants Meeting CVW Criteria has been presented.
Measured: Up to Week 48
Number of Participants With Phenotypic Resistance: Up to Week 144
Number of participants, who meet CVW criteria (one plasma HIV-1 RNA >=200 c/mL after Day 1 with immediate prior HIV RNA >=50 c/mL), with phenotypic resistance to INSTI,NNRT,NRTI and PI were summarized. Assessment of antiviral activity of anti-retroviral therapy (ART) using phenotypic test results was interpreted through a proprietary algorithm (from Monogram Biosciences), which provided the overall susceptibility of the drug. Partially sensitive and resistant calls were considered resistant in this analysis. The phenotypic resistance was calculated using binary scoring system, where 0 was considered as sensitive and 1 as resistance. Phenotypic Resistance data for the following INSTI, NNRTI, NRTI and PI drugs in participants Meeting CVW Criteria has been presented.
Measured: Up to Week 144
Change From Baseline in Bone Biomarkers-serum Bone-specific ALP (Bone-ALP), Osteocalcin, Serum Procollagen 1 N-Terminal Propeptide (P1NP) and Serum Type 1 Collagen C-telopeptides (CTX-1) at Weeks 24 and 48
Serum samples were collected for analysis of bone biomarkers. Baseline was latest pre-dose assessment with a non-missing value (Day 1). Change from Baseline is post-dose visit value minus Baseline value. Adjusted mean and its corresponding standard error has been presented. Adjusted mean was the estimated mean change from Baseline at each visit in each arm calculated from a repeated measures model adjusting for treatment, visit, Baseline third agent class, CD4+ cell count (continuous), age (continuous), sex, race, body mass index (BMI) (continuous), smoking status, vitamin D use, Baseline biomarker (continuous), treatment by visit interaction, and Baseline value by visit interaction, with visit as repeated factor.One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in Bone Biomarkers-serum Bone-specific ALP (Bone-ALP), Osteocalcin, Serum P1NP and Serum CTX-1 in Participants Randomized to TBR Arm Receiving TDF-based Regimen at Weeks 24 and 48
Serum samples were collected for analysis of bone biomarkers. Baseline was latest pre-dose assessment with a non-missing value (Day 1) . Change from Baseline is post-dose visit value minus Baseline value. Change from Baseline in bone biomarkers-serum bone-specific ALP (Bone-ALP), osteocalcin, serum P1NP and serum CTX-1 in TDF-based regimen participants has been presented. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in Bone Biomarkers-serum Bone-ALP, Osteocalcin, Serum P1NP and Serum Type 1 CTX-1 at Weeks 96 and 144
Serum samples were collected for analysis of bone biomarkers. Baseline is latest pre-dose assessment with a non-missing value (Day 1). Change from Baseline is post-dose visit value minus Baseline value. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen"
Measured: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in Bone Biomarker: Serum 25-hydroxyvitamin D at Weeks 24 and 48
Serum samples were collected for analysis of 25-hydroxyvitamin D. Baseline value was latest pre-dose assessment (Day 1) with a non-missing value (Day 1). Change from Baseline is defined as post-dose visit value minus Baseline value. Adjusted mean and its corresponding standard error has been presented. Adjusted mean was estimated mean change from Baseline at each visit in each arm calculated from a repeated measures model adjusting for treatment, visit, Baseline third agent class, CD4+ cell count (continuous), age (continuous), sex, race, BMI (continuous), smoking status, vitamin D use, Baseline biomarker (continuous), treatment by visit interaction, and Baseline value by visit interaction, with visit as repeated factor.One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in Bone Biomarker: Serum 25-hydroxyvitamin D at Weeks 24 and 48 in Participants Randomized to TBR Arm Receiving TDF-based Regimen
Serum samples were collected for the analysis of 25-hydroxyvitamin D. Baseline value was the value from latest pre-dose assessment with a non-missing value (Day 1). Change from Baseline is defined as post-dose visit value minus Baseline value. Change from Baseline values for serum 25-hydroxyvitamin D in TDF-based regimen participants has been presented. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in Bone Biomarker: Serum 25-hydroxyvitamin D at Weeks 96 and 144
Serum samples were collected for analysis of 25-hydroxyvitamin D. Baseline value is latest pre-dose assessment with a non-missing value (Day 1). Change from Baseline is defined as post-dose visit value minus Baseline value. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen"
Measured: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in Renal Biomarker- Serum Cystatin C at Weeks 24 and 48
Serum samples were collected to assess renal biomarker. Baseline was latest pre-dose assessment value with non-missing value (Day 1). Change from Baseline is post-dose visit value minus Baseline value. Adjusted mean and its corresponding standard error has been presented. Adjusted mean was estimated mean change from Baseline at each visit in each arm calculated from a repeated measures model adjusting for following:treatment, visit, Baseline third agent class, CD4+ cell count(continuous), age(continuous), sex, race, BMI(continuous), presence of diabetes mellitus, presence of hypertension, Baseline biomarker(continuous), treatment by visit interaction, and Baseline value by visit interaction, with visit as repeated factor. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen"
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in Renal Biomarker- Serum Cystatin C at Weeks 24 and 48 in Participants Randomized to TBR Arm Receiving TDF-based Regimen
Serum samples were collected at Baseline, Week 24 and Week 48 to assess renal inflammation biomarker - cystatin C. Baseline was defined as the latest pre-dose assessment value with a non-missing value (Day 1). Change from Baseline is defined as post-dose visit value minus Baseline value. Change from Baseline values for serum cystatin -C biomarker in TDF based regimen participants has been presented. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in Renal Biomarker- Serum Cystatin C at Weeks 96 and 144
Serum samples were collected to assess renal biomarker. Baseline is latest pre-dose assessment value with non-missing value (Day 1). Change from Baseline is post-dose visit value minus Baseline value. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen"
Measured: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in Renal Biomarker- Serum GFR From Cystatin C Adjusted Using CKD-EPI and Serum GFR From Creatinine Adjusted Using CKD-EPI at Weeks 24 and 48
Serum samples assessed:serum GFR from cystatin C and from creatinine adjusted using CKD-EPI Baseline(Day 1) was value from latest pre-dose assessment with non-missing value. Change from Baseline is post-dose visit value minus Baseline value.Adjusted mean and standard error is presented.Adjusted mean was estimated mean change from Baseline at each visit in each arm calculated from repeated measures model adjusting for treatment, visit, Baseline third agent class,CD4+ cell count(continuous),age(continuous), sex, race, BMI(continuous),presence of diabetes mellitus, presence of hypertension, Baseline biomarker(continuous), treatment by visit interaction, and Baseline value by visit interaction, with visit as repeated factor. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen"
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in Renal Biomarker- Serum GFR From Cystatin C Adjusted Using CKD-EPI and Serum GFR From Creatinine Adjusted Using CKD-EPI at Weeks 24 and 48 in Participants Randomized to TBR Arm Receiving TDF-based Regimen
Serum samples were collected at Baseline, Week 24 and Week 48 to assess renal inflammation biomarkers - serum GFR from cystatin C adjusted using CKD-EPI and serum GFR from creatinine adjusted using CKD-EPI. Baseline was defined as the latest pre-dose assessment value with a non-missing value (Day 1). Change from Baseline is defined as post-dose visit value minus Baseline value. Change from Baseline in serum GFR from cystatin C adjusted using CKD-EPI and serum GFR from creatinine adjusted using CKD-EPI in TDF-based regimen participants has been presented. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in Renal Biomarker- Serum GFR From Cystatin C Adjusted Using CKD-EPI and Serum GFR From Creatinine Adjusted Using CKD-EPI at Weeks 96 and 144
Serum samples were collected to assess serum GFR from cystatin C and from creatinine adjusted for BSA. Baseline is defined as the latest pre-dose assessment value with a non-missing value (Day 1). Change from Baseline is post-dose visit value minus Baseline value. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen"
Measured: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in Renal Biomarker- Serum Creatinine at Weeks 24 and 48
Serum samples assessed: renal inflammation biomarker serum creatinine.Baseline(Day 1)was value from latest pre-dose assessment with non-missing value. Change from Baseline is post-dose visit value minus Baseline value. Adjusted mean and its corresponding standard error has been presented. Adjusted mean was estimated mean change from Baseline at each visit in each arm calculated from repeated measures model adjusting for treatment, visit, Baseline third agent class, CD4+ cell count(continuous), age(continuous), sex, race, BMI(continuous), presence of diabetes mellitus, presence of hypertension, Baseline biomarker(continuous), treatment by visit interaction, Baseline value by visit interaction, with visit as repeated factor. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen"
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in Renal Biomarker- Serum Creatinine at Weeks 24 and 48 in Participants Randomized to TBR Arm Receiving TDF-based Regimen
Serum samples were collected at Baseline, Week 24 and Week 48 to assess renal inflammation biomarker - serum creatinine. Baseline was defined as the latest pre-dose assessment value with a non-missing value (Day 1). Change from Baseline is defined as post-dose visit value minus Baseline value. Change from Baseline in serum creatinine in TDF-based regimen participants has been presented. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen."
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in Renal Biomarker- Serum Creatinine at Weeks 96 and 144
Serum samples were collected to assess renal inflammation biomarker - serum creatinine. Baseline is defined as the latest pre-dose assessment value with a non-missing value (Day 1). Change from Baseline is post-dose visit value minus Baseline value. One participant randomized to TBR but received TDF-based regimen and because the safety profiles of TDF and TAF differ, this participant was removed from the overall safety population and is presented in separate arm "Randomized to TBR but received TDF-based regimen"
Measured: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in European Quality of Life-5 Dimensions-5 Levels (EQ-5D-5L) Utility Score at Week 24 and 48
EQ-5D-5L questionnaire provides a profile of participant function and a global health state rating. The five-item measure has one question assessing each of five dimensions: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression and 5 levels for each dimension including 1=no problems, 2=slight problems, 3=moderate problems, 4=severe problems and 5=extreme problems. The health state is defined by combining the levels of answers from each of the 5 questions. Each health state is referred to in terms of a 5 digit code. Health state 5 digit code is translated into utility score, which is valued up to 1 (perfect health) with lower values meaning worse state. EQ-5D-5L utility score ranges from -0.281 to 1. Higher scores indicate better health.
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in EQ-5D-5L Utility Score at Weeks 96 and 144
EQ-5D-5L questionnaire provides profile of participant function and global health state rating. Five-item measure has 1question assessing each of 5dimensions:mobility,self-care,usual activities,pain/discomfort,anxiety/depression and 5 levels for each dimension including 1=no problems,2=slight problems,3=moderate problems,4=severe problems,5=extreme problems. Health state is defined by combining levels of answers from each of 5 questions. Each health state is referred to in terms of a 5 digit code.Health state 5 digit code is translated into utility score, which is valued up to 1 (perfect health) with lower values meaning worse state.EQ-5D-5L utility score ranges from -0.281 to 1. Higher scores indicate better health.Baseline is latest pre-dose assessment value with a non-missing value (Day 1).Change from Baseline is post-dose visit value minus Baseline value.
Measured: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in EQ-5D-5L Thermometer Scores at Week 24 and 48
EQ-5D-5L questionnaire provides a profile of participant function and a global health state rating. The five-item measure has one question assessing each of five dimensions: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression and 5 levels for each dimension including 1=no problems, 2=slight problems, 3=moderate problems, 4=severe problems and 5=extreme problems. EQ-5D-5L included EQ visual Analogue scale (EQ VAS) 'Thermometer' which provided Self-rated current health status. Score ranges from 0 (worst imaginable health state) to 100 (best imaginable health state). MMRM was run on the LOCF dataset. Baseline was the latest pre-dose assessment value with a non-missing value (Day 1) and change from Baseline is defined as post-dose value minus Baseline value.
Measured: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in EQ-5D-5L Thermometer Scores at Weeks 96 and 144
EQ-5D-5L questionnaire provides a profile of participant function and a global health state rating. The five-item measure has one question assessing each of five dimensions: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression and 5 levels for each dimension including 1=no problems, 2=slight problems, 3=moderate problems, 4=severe problems and 5=extreme problems. EQ-5D-5L included EQ visual Analogue scale (EQ VAS) 'Thermometer' which provided Self-rated current health status. Score ranges from 0 (worst imaginable health state) to 100 (best imaginable health state). Baseline is defined as the latest pre-dose assessment value with a non-missing value (Day 1). Change from Baseline is defined as post-dose visit value minus Baseline value.
Measured: Baseline (Day 1) and at Weeks 96 and 144
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 Feb 2018
- Study start18 Jan 2018
- Primary completion20 May 2019
- Study completion3 May 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (10)Papers the sponsor has linked to this study.
- Other trials for HIV InfectionsStudies of the same condition, open and under way.
- More trials run by ViiV HealthcareThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- This is a randomized study with parallel group assignment where participants will be randomized into one of the two treatment groups. Participants randomized to DTG + 3TC will receive DTG + 3TC up to Week 200. Participants randomized to TBR will continue to take their current regimen up to Week 148, at which time and if HIV-1 RNA \<50 c/mL at Week 144, these participants will switch to DTG + 3TC up to Week 200. Randomization will be stratified by Baseline third agent class (protease inhibitor \[PI\], integrase inhibitor \[INI\], or non-nucleoside reverse transcriptase inhibitor \[NNRTI\]).
- Masking
- None (open label)
- Enrolment
- 743 participants (actual)
Sponsor and investigators
- Lead sponsor
- ViiV Healthcare
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- GlaxoSmithKline
- Responsible party
- Sponsor
- Investigators
- GSK Clinical Trials, Study director, ViiV Healthcare
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03446573
- Sponsor's protocol ID
- 204862
- Other IDs
- 2015-004401-17, 2015
- Status last verified
- Jul 2023
- First submitted
- 5 Jan 2018
- Last updated
- 19 Jul 2023
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: Qualified researchers may request access to anonymized individual patient-level data (IPD) and related study documents of the eligible studies via the Data Sharing Portal. Details on ViiV's data sharing criteria can be found at: https://viivhealthcare.com/about-viiv/corporate-ethics-compliance/commitment-to-data-transparency/
Publications
van Wyk J, Ajana F, Bisshop F, De Wit S, Osiyemi O, Portilla Sogorb J, Routy JP, Wyen C, Ait-Khaled M, Nascimento MC, Pappa KA, Wang R, Wright J, Tenorio AR, Wynne B, Aboud M, Gartland MJ, Smith KY. Efficacy and Safety of Switching to Dolutegravir/Lamivudine Fixed-Dose 2-Drug Regimen vs Continuing a Tenofovir Alafenamide-Based 3- or 4-Drug Regimen for Maintenance of Virologic Suppression in Adults Living With Human Immunodeficiency Virus Type 1: Phase 3, Randomized, Noninferiority TANGO Study. Clin Infect Dis. 2020 Nov 5;71(8):1920-1929. doi: 10.1093/cid/ciz1243.
PubMed 31905383Scholten S, Cahn P, Portilla J, Bisshop F, Hodder S, Ruane P, Kaplan R, Wynne BR, Man CY, Grove R, Wang R, Jones B, Ait-Khaled M, Kisare M, Okoli C. Dolutegravir/Lamivudine Efficacy and Safety Outcomes in People With HIV-1 With or Without Historical Resistance Results at Screening: 48-Week Pooled Analysis. Open Forum Infect Dis. 2024 Jul 1;11(7):ofae365. doi: 10.1093/ofid/ofae365. eCollection 2024 Jul.
PubMed 39015350Ait-Khaled M, Oyee J, Ooi AYR, Wynne B, Maldonado A, Jones B, Wang T. Efficacy and Safety of Switching to Dolutegravir/Lamivudine Versus Continuing a Tenofovir Alafenamide-Based Regimen in Virologically Suppressed Adults With Human Immunodeficiency Virus Type 1: Subgroup Analysis of Participants With Elvitegravir as Baseline Third Agent From the TANGO Study. Open Forum Infect Dis. 2024 May 2;11(5):ofae227. doi: 10.1093/ofid/ofae227. eCollection 2024 May.
PubMed 38737429Chandasana H, Singh R, Adkison K, Ait-Khaled M, Pene Dumitrescu T. Population pharmacokinetic modeling of dolutegravir/lamivudine to support a once-daily fixed-dose combination regimen in virologically suppressed adults living with HIV-1. Antimicrob Agents Chemother. 2024 May 2;68(5):e0150423. doi: 10.1128/aac.01504-23. Epub 2024 Apr 8.
PubMed 38587380Walmsley S, Smith DE, Gorgolas M, Cahn PE, Lutz T, Lacombe K, Kumar PN, Wynne B, Grove R, Bontempo G, Moodley R, Okoli C, Kisare M, Jones B, Clark A, Ait-Khaled M. Efficacy and safety of switching to dolutegravir/lamivudine in virologically suppressed people with HIV-1 aged >/= 50 years: week 48 pooled results from the TANGO and SALSA studies. AIDS Res Ther. 2024 Mar 21;21(1):17. doi: 10.1186/s12981-024-00604-9.
PubMed 38515183Wang R, Underwood M, Llibre JM, Bernal Morell E, Brinson C, Sanz Moreno J, Scholten S, Moore R, Saggu P, Oyee J, Moodley R, Wynne B, Kisare M, Jones B, Ait-Khaled M. Very-Low-Level Viremia, Inflammatory Biomarkers, and Associated Baseline Variables: Three-Year Results of the Randomized TANGO Study. Open Forum Infect Dis. 2023 Dec 9;11(1):ofad626. doi: 10.1093/ofid/ofad626. eCollection 2024 Jan.
PubMed 38213637Batterham RL, Espinosa N, Katlama C, McKellar M, Scholten S, Smith DE, Ait-Khaled M, George N, Wright J, Gordon LA, Moodley R, Wynne B, van Wyk J. Cardiometabolic Parameters 3 Years After Switch to Dolutegravir/Lamivudine vs Maintenance of Tenofovir Alafenamide-Based Regimens. Open Forum Infect Dis. 2023 Jul 12;10(7):ofad359. doi: 10.1093/ofid/ofad359. eCollection 2023 Jul.
PubMed 37520420Wang R, Wright J, Saggu P, Ait-Khaled M, Moodley R, Parry CM, Lutz T, Podzamczer D, Moore R, Gorgolas Hernandez-Mora M, Kinder C, Wynne B, van Wyk J, Underwood M. Assessing the Virologic Impact of Archived Resistance in the Dolutegravir/Lamivudine 2-Drug Regimen HIV-1 Switch Study TANGO through Week 144. Viruses. 2023 Jun 11;15(6):1350. doi: 10.3390/v15061350.
PubMed 37376649Osiyemi O, De Wit S, Ajana F, Bisshop F, Portilla J, Routy JP, Wyen C, Ait-Khaled M, Leone P, Pappa KA, Wang R, Wright J, George N, Wynne B, Aboud M, van Wyk J, Smith KY. Efficacy and Safety of Switching to Dolutegravir/Lamivudine Versus Continuing a Tenofovir Alafenamide-Based 3- or 4-Drug Regimen for Maintenance of Virologic Suppression in Adults Living With Human Immunodeficiency Virus Type 1: Results Through Week 144 From the Phase 3, Noninferiority TANGO Randomized Trial. Clin Infect Dis. 2022 Sep 29;75(6):975-986. doi: 10.1093/cid/ciac036.
PubMed 35079789van Wyk J, Ait-Khaled M, Santos J, Scholten S, Wohlfeiler M, Ajana F, Jones B, Nascimento MC, Tenorio AR, Smith DE, Wright J, Wynne B. Brief Report: Improvement in Metabolic Health Parameters at Week 48 After Switching From a Tenofovir Alafenamide-Based 3- or 4-Drug Regimen to the 2-Drug Regimen of Dolutegravir/Lamivudine: The TANGO Study. J Acquir Immune Defic Syndr. 2021 Jun 1;87(2):794-800. doi: 10.1097/QAI.0000000000002655.
PubMed 33587500
Study at a glance
From the registry record, last updated by the sponsor on 19 Jul 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase III, Randomized, Multicenter, Parallel-group, Non-inferiority Study Evaluating the Efficacy, Safety, and Tolerability of Switching to Dolutegravir Plus Lamivudine in HIV-1 Infected Adults Who Are Virologically Suppressed
- ClinicalTrials.gov ID
- NCT03446573
- Acronym / sponsor ID
- 204862
- Conditions
- HIV Infections
- Keywords
- Switch study, Non-inferiority, Human immunodeficiency virus type 1, Tenofovir alafenamide, Dolutegravir, Lamivudine
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 743 participants (actual)
- Lead sponsor
- ViiV HealthcareIndustry (pharma, biotech, devices)
- Collaborators
- GlaxoSmithKline
- Study start
- 18 Jan 2018 (actual)
- Primary completion
- 20 May 2019 (actual)
- Study completion
- 3 May 2022 (actual)
- First posted
- 27 Feb 2018 (actual)
- Results
- Posted 2 Jun 2020
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The aim of the study is to establish if human immunodeficiency virus type 1 (HIV-1) infected adult participants with current virologic suppression on a >=3-drug tenofovir alafenamide (TAF) based regimen (TBR) remain suppressed upon switching to a two-drug regimen of dolutegravir (DTG) 50 milligram (mg) + lamivudine (3TC) 300 mg. This study will also provide important information regarding the safety and participant satisfaction with this two-drug regimen. The primary objective of this trial is to demonstrate the non-inferior antiviral activity of switching to DTG + 3TC once daily compared to continuation of TBR over 48 weeks in HIV-1 infected, antiretroviral therapy (ART)-experienced, virologically suppressed participants. This study also will characterize the long-term antiviral activity, tolerability and safety of DTG + 3TC compared to TBR through Week 144 and characterize the long-term antiviral activity, tolerability and safety of DTG + 3TC through Week 200.
This will be a 200-week, Phase III, randomized, open-label, active-controlled, multicenter, parallel- group study. The study will include a screening phase (up to 28 days), a randomized early switch phase (Day 1 up to Week 148), a randomized late switch phase (Week 148 up to Week 200), and a continuation phase (post Week 200). HIV-1 infected adults on stable TBR will be randomized 1:1 to switch to DTG + 3TC once daily for up to 200 weeks, or to continue their TBR for 148 weeks, at which time and if HIV-1 ribonucleic acid (RNA) <50 copies per milliliter (c/mL) at Week 144, these participants will switch to DTG + 3TC up to Week 200.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- This is a randomized study with parallel group assignment where participants will be randomized into one of the two treatment groups. Participants randomized to DTG + 3TC will receive DTG + 3TC up to Week 200. Participants randomized to TBR will continue to take their current regimen up to Week 148, at which time and if HIV-1 RNA <50 c/mL at Week 144, these participants will switch to DTG + 3TC up to Week 200. Randomization will be stratified by Baseline third agent class (protease inhibitor [PI], integrase inhibitor [INI], or non-nucleoside reverse transcriptase inhibitor [NNRTI]).
| Arm | Type | Receives |
|---|---|---|
| DTG + 3TC 50 mg/300 mg | Experimental | Drug: DTG + 3TCParticipants will receive a single tablet of a two-drug regimen of DTG 50 mg + 3TC 300 mg once daily from Day 1 through Week 200 (Early and Late Switch Phase). |
| TAF based regimen (TBR) | Active comparator | Drug: TAF based regimen (TBR)Participants will continue their TBR from Day 1 to Week 148 (Early Switch Phase), and eligible participants will switch to DTG + 3TC once daily from Week 148 to 200 (Late Switch Phase). |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (22 listed)
- Participant must be able to understand and comply with protocol requirements, instructions, and restrictions;
- Participant must be likely to complete the study as planned;
- Participant must be considered an appropriate candidate for participation in an investigative clinical trial with medication (example no active substance abuse, acute major organ disease, or planned long-term work assignments out of the country).
- Aged 18 years or older (or older where required by local regulatory agencies), at the time of signing the informed consent.
- HIV-1 infected men or women.
Key exclusion criteria (26 listed)
- Women who are breastfeeding or plan to become pregnant or breastfeed during the study.
- Any evidence of an active Centers for Disease Control and Prevention (CDC) Stage 3 disease, EXCEPT cutaneous Kaposi's sarcoma not requiring systemic therapy. Historical or current CD4 cell counts less than 200 cells/millimeter (mm)^3 are NOT exclusionary.
- Participants with severe hepatic impairment (Class C) as determined by Child-Pugh classification.
- Unstable liver disease (as defined by the presence of ascites, encephalopathy, coagulopathy, hypoalbuminaemia, oesophageal or gastric varices, or persistent jaundice), cirrhosis, known biliary abnormalities (with the exception of Gilbert's syndrome or asymptomatic gallstones).
- Evidence of Hepatitis B virus (HBV) infection based on the results of testing at Screening for Hepatitis B surface antigen (HBsAg), Hepatitis B core antibody (anti-HBc), Hepatitis B surface antigen antibody (anti-HBs) and HBV deoxyribonucleic acid (DNA) as follows: participants positive for HBsAg are excluded; participants negative for anti-HBs but positive for anti-HBc (negative HBsAg status) and positive for HBV DNA are excluded.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| DTG + 3TCDTG+3TC is supplied as white, oval, film-coated, fixed dose combination tablet. The tablets will be available in packed high density polyethylene (HDPE) bottles with induction seals and child-resistant closures. | Drug | DTG + 3TC 50 mg/300 mg |
| TAF based regimen (TBR)Participants will continue to receive their TBR. | Drug | TAF based regimen (TBR) |
Primary outcome
Percentage of Participants With Virologic Failure Endpoint as Per Food and Drug Administration (FDA) Snapshot Category at Week 48
Time frame: Week 48
Percentage of participants with virologic failure (plasma HIV-1 RNA >=50 c/mL) was evaluated using FDA snapshot algorithm at Week 48. The Snapshot algorithm treated all participants without HIV-1 RNA data at the visit of interest (due to missing data or discontinuation of investigational product prior to the visit window) as non-responders, as well as participants who switch their concomitant antiretroviral therapy (ART) prior to the visit of interest. Intent-to-treat exposed (ITT-E) Population comprises of all randomized participants who received at least one dose of study treatment either DTG + 3TC or TBR. Participants were assessed according to the treatment to which the participant was randomized. Any participant receiving a treatment randomization number was considered to be randomized.
64 secondary outcomes
Percentage of Participants With Plasma HIV-1 RNA <50 c/mL as Per Snapshot Algorithm at Week 48
Time frame: Week 48
Percentage of Participants With Virologic Failure Endpoint as Per FDA Snapshot Category at Week 24
Time frame: Week 24
Percentage of Participants With Virologic Failure Endpoint as Per FDA Snapshot Category at Weeks 96, 144
Time frame: Weeks 96 and 144
Percentage of Participants With Plasma HIV-1 RNA <50 c/mL as Per Snapshot Algorithm at Week 24
Time frame: Week 24
Percentage of Participants With Plasma HIV-1 RNA <50 c/mL as Per Snapshot Algorithm at Weeks 96 and 144
Time frame: Weeks 96 and 144
Change From Baseline in CD4+ Cell Count at Weeks 24 and 48
Time frame: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in CD4+ Cell Count at Weeks 96 and 144
Time frame: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in CD4+/CD8+ Cell Count Ratio at Weeks 24 and 48
Time frame: Baseline (Day 1) and at Weeks 24 and 48
Change From Baseline in CD4+/CD8+ Cell Count Ratio at Weeks 96 and 144
Time frame: Baseline (Day 1) and at Weeks 96 and 144
Number of Participants With Disease Progression at Weeks 24 and 48
Time frame: At Weeks 24 and 48
Number of Participants With Disease Progression at Weeks 96 and 144
Time frame: At Weeks 96 and 144
Number of Participants With Any Serious Adverse Events (SAEs) and Common (>=2%) Non-serious Adverse Events (Non-SAEs): Up to Week 48
Time frame: Up to Week 48
Number of Participants Randomized to TBR Arm Receiving TDF-based Regimen With Any SAEs and Common (>=2%) Non-SAEs: Up to Week 48
Time frame: Up to Week 48
Number of Participants With Any SAEs and Common (>=2%) Non-SAEs: Up to Week 148
Time frame: Up to Week 148
Number of Participants With AEs by Their Severity Grades: Up to Week 48
Time frame: Up to Week 48
Number of Participants Randomized to TBR Arm Receiving TDF-based Regimen With AEs by Their Severity Grades: Up to Week 48
Time frame: Up to Week 48
Number of Participants With AEs by Their Severity Grades: Up to Week 144
Time frame: Up to Week 144
Number of Participants Who Discontinued the Treatment Due to AEs: Up to Week 48
Time frame: Up to Week 48
Number of Participants Randomized to TBR Arm Receiving TDF-based Regimen Who Discontinued the Treatment Due to AEs: Up to Week 48
Time frame: Up to Week 48
Number of Participants Who Discontinued the Treatment Due to AEs: Up to Week 144
Time frame: Up to Week 144
Number of Participants With Maximum Post-Baseline Emergent Hematology Toxicities: Up to Week 48
Time frame: Up to Week 48
Number of Participants Randomized to TBR Arm Receiving TDF-based Regimen With Maximum Post-Baseline Emergent Hematology Toxicities: Up to Week 36
Time frame: Up to Week 36
Number of Participants With Maximum Post-Baseline Emergent Hematology Toxicities: Up to Week 144
Time frame: Up to Week 144
Number of Participants With Maximum Post-Baseline Emergent Clinical Chemistry Toxicities: Up to Week 48
Time frame: Up to Week 48
Number of Participants Randomized to TBR Arm Receiving TDF-based Regimen With Maximum Post-Baseline Emergent Clinical Chemistry Toxicities: Up to Week 36
Time frame: Up to Week 36
Number of Participants With Maximum Post-Baseline Emergent Clinical Chemistry Toxicities: Up to Week 144
Time frame: Up to Week 144
Change From Baseline in Renal Biomarkers- Urine Albumin/Creatinine (UA/C) Ratio and Urine Protein/Creatinine (UP/C) Ratio at Weeks 24 and 48
Time frame: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- UA/C Ratio and UP/C Ratio at Weeks 24 and 48 in Participants Randomized to TBR Receiving TDF-based Regimen
Time frame: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- UA/C Ratio and UP/C Ratio at Weeks 96 and 144
Time frame: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in Renal Biomarkers- Urine Beta-2 Microglobulin/Urine Creatinine Ratio at Weeks 24 and 48
Time frame: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- Urine Beta-2 Microglobulin/Urine Creatinine Ratio at Weeks 24 and 48 in Participants Randomized to TBR Arm Receiving TDF-based Regimen
Time frame: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- Urine Beta-2 Microglobulin/Urine Creatinine Ratio at Weeks 96 and 144
Time frame: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in Renal Biomarkers- Urine Phosphate at Weeks 24 and 48
Time frame: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- Urine Phosphate at Weeks 24 and 48 in Participants Randomized to TBR Arm Receiving TDF-based Regimen
Time frame: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- Urine Phosphate at Weeks 96 and 144
Time frame: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in Renal Biomarkers- Urine Retinol Binding Protein 4/Urine Creatinine at Weeks 24 and 48
Time frame: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- Urine Retinol Binding Protein 4/Urine Creatinine at Weeks 24 and 48 in Participants Randomized to TBR Arm Receiving TDF-based Regimen
Time frame: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Renal Biomarkers- Urine Retinol Binding Protein 4/Urine Creatinine at Weeks 96 and 144
Time frame: Baseline (Day 1) and at Weeks 96 and 144
Change From Baseline in Fasting Lipids at Weeks 24 and 48
Time frame: Baseline (Day 1) and at weeks 24 and 48
Change From Baseline in Fasting Lipids at Weeks 24 and 48 in Participants Randomized to TBR Arm Receiving TDF-based Regimen
Time frame: Baseline (Day 1) and at weeks 24 and 48
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Jul 2023.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 31905383van Wyk J, Ajana F, Bisshop F, De Wit S, Osiyemi O, Portilla Sogorb J, Routy JP, Wyen C, Ait-Khaled M, Nascimento MC, Pappa KA, Wang R, Wright J, Tenorio AR, Wynne B, Aboud M, Gartland MJ, Smith KY. Efficacy and Safety of Switching to Dolutegravir/Lamivudine Fixed-Dose 2-Drug Regimen vs Continuing a Tenofovir Alafenamide-Based 3- or 4-Drug Regimen for Maintenance of Virologic Suppression in Adults Living With Human Immunodeficiency Virus Type 1: Phase 3, Randomized, Noninferiority TANGO Study. Clin Infect Dis. 2020 Nov 5;71(8):1920-1929. doi: 10.1093/cid/ciz1243.
- Derived from this study: PubMed 39015350Scholten S, Cahn P, Portilla J, Bisshop F, Hodder S, Ruane P, Kaplan R, Wynne BR, Man CY, Grove R, Wang R, Jones B, Ait-Khaled M, Kisare M, Okoli C. Dolutegravir/Lamivudine Efficacy and Safety Outcomes in People With HIV-1 With or Without Historical Resistance Results at Screening: 48-Week Pooled Analysis. Open Forum Infect Dis. 2024 Jul 1;11(7):ofae365. doi: 10.1093/ofid/ofae365. eCollection 2024 Jul.
- Derived from this study: PubMed 38737429Ait-Khaled M, Oyee J, Ooi AYR, Wynne B, Maldonado A, Jones B, Wang T. Efficacy and Safety of Switching to Dolutegravir/Lamivudine Versus Continuing a Tenofovir Alafenamide-Based Regimen in Virologically Suppressed Adults With Human Immunodeficiency Virus Type 1: Subgroup Analysis of Participants With Elvitegravir as Baseline Third Agent From the TANGO Study. Open Forum Infect Dis. 2024 May 2;11(5):ofae227. doi: 10.1093/ofid/ofae227. eCollection 2024 May.
- Derived from this study: PubMed 38587380Chandasana H, Singh R, Adkison K, Ait-Khaled M, Pene Dumitrescu T. Population pharmacokinetic modeling of dolutegravir/lamivudine to support a once-daily fixed-dose combination regimen in virologically suppressed adults living with HIV-1. Antimicrob Agents Chemother. 2024 May 2;68(5):e0150423. doi: 10.1128/aac.01504-23. Epub 2024 Apr 8.
- Derived from this study: PubMed 38515183Walmsley S, Smith DE, Gorgolas M, Cahn PE, Lutz T, Lacombe K, Kumar PN, Wynne B, Grove R, Bontempo G, Moodley R, Okoli C, Kisare M, Jones B, Clark A, Ait-Khaled M. Efficacy and safety of switching to dolutegravir/lamivudine in virologically suppressed people with HIV-1 aged >/= 50 years: week 48 pooled results from the TANGO and SALSA studies. AIDS Res Ther. 2024 Mar 21;21(1):17. doi: 10.1186/s12981-024-00604-9.
- Derived from this study: PubMed 38213637Wang R, Underwood M, Llibre JM, Bernal Morell E, Brinson C, Sanz Moreno J, Scholten S, Moore R, Saggu P, Oyee J, Moodley R, Wynne B, Kisare M, Jones B, Ait-Khaled M. Very-Low-Level Viremia, Inflammatory Biomarkers, and Associated Baseline Variables: Three-Year Results of the Randomized TANGO Study. Open Forum Infect Dis. 2023 Dec 9;11(1):ofad626. doi: 10.1093/ofid/ofad626. eCollection 2024 Jan.
- Derived from this study: PubMed 37520420Batterham RL, Espinosa N, Katlama C, McKellar M, Scholten S, Smith DE, Ait-Khaled M, George N, Wright J, Gordon LA, Moodley R, Wynne B, van Wyk J. Cardiometabolic Parameters 3 Years After Switch to Dolutegravir/Lamivudine vs Maintenance of Tenofovir Alafenamide-Based Regimens. Open Forum Infect Dis. 2023 Jul 12;10(7):ofad359. doi: 10.1093/ofid/ofad359. eCollection 2023 Jul.
- Derived from this study: PubMed 37376649Wang R, Wright J, Saggu P, Ait-Khaled M, Moodley R, Parry CM, Lutz T, Podzamczer D, Moore R, Gorgolas Hernandez-Mora M, Kinder C, Wynne B, van Wyk J, Underwood M. Assessing the Virologic Impact of Archived Resistance in the Dolutegravir/Lamivudine 2-Drug Regimen HIV-1 Switch Study TANGO through Week 144. Viruses. 2023 Jun 11;15(6):1350. doi: 10.3390/v15061350.
- Derived from this study: PubMed 35079789Osiyemi O, De Wit S, Ajana F, Bisshop F, Portilla J, Routy JP, Wyen C, Ait-Khaled M, Leone P, Pappa KA, Wang R, Wright J, George N, Wynne B, Aboud M, van Wyk J, Smith KY. Efficacy and Safety of Switching to Dolutegravir/Lamivudine Versus Continuing a Tenofovir Alafenamide-Based 3- or 4-Drug Regimen for Maintenance of Virologic Suppression in Adults Living With Human Immunodeficiency Virus Type 1: Results Through Week 144 From the Phase 3, Noninferiority TANGO Randomized Trial. Clin Infect Dis. 2022 Sep 29;75(6):975-986. doi: 10.1093/cid/ciac036.
- Derived from this study: PubMed 33587500van Wyk J, Ait-Khaled M, Santos J, Scholten S, Wohlfeiler M, Ajana F, Jones B, Nascimento MC, Tenorio AR, Smith DE, Wright J, Wynne B. Brief Report: Improvement in Metabolic Health Parameters at Week 48 After Switching From a Tenofovir Alafenamide-Based 3- or 4-Drug Regimen to the 2-Drug Regimen of Dolutegravir/Lamivudine: The TANGO Study. J Acquir Immune Defic Syndr. 2021 Jun 1;87(2):794-800. doi: 10.1097/QAI.0000000000002655.
- Individual participant dataSharing planned: Yes. Qualified researchers may request access to anonymized individual patient-level data (IPD) and related study documents of the eligible studies via the Data Sharing Portal. Details on ViiV's data sharing criteria can be found at: https://viivhealthcare.com/about-viiv/corporate-ethics-compliance/commitment-to-data-transparency/
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
GSK Clinical Trials study director
ViiV Healthcare
133 sites in 10 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing DTG + 3TC and TAF based regimen (TBR) in people with HIV Infections, run by ViiV Healthcare at 133 sites in 10 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 22 inclusion and 26 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 19 Jul 2023. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 133 sites in United States, Spain, Germany, Australia, France and 5 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 2 Jun 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Percentage of Participants With Virologic Failure Endpoint as Per Food and Drug Administration (FDA) Snapshot Category at Week 48 (time frame: Week 48). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03446573, which also lists 10 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Jul 2023.