HIV InfectionsPhase 1NCT00001133
Safety and Tolerance of Indinavir Plus Ritonavir in HIV-Positive Patients Failing Therapy With Amprenavir, Nelfinavir, or Saquinavir
A Phase 1 study testing Indinavir sulfate and Ritonavir in people with HIV Infections, run by National Institute of Allergy and Infectious Diseases (NIAID) at 7 sites in United States.
Trial summary
In this study, the protease inhibitors indinavir (IDV) and ritonavir (RTV) will be studied in patients who have high levels of virus while taking other protease inhibitors. The purpose of this study is to see how the body takes in, distributes, and gets rid of IDV and RTV. 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?
- Indinavir sulfate and Ritonavir
- How many people
- 50 participants
- Where
- 7 sitesUnited States
- Study dates
- Start not givento Aug 2006
- Phase
- Phase 1
- Are there results?
- None posted in the registry
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
- Patients may be eligible for this study if they:
- Are HIV-positive.
- Are at least 18 years old.
- Have a viral load (level of HIV in the blood) of at least 500 copies/ml but no more than 100,000 copies/ml within 45 days of study entry.
- Have been taking the following anti-HIV drug combination for at least 12 weeks before study entry: 2 NRTIs plus amprenavir (APV), nelfinavir (NFV), saquinavir (SQV), or NFV plus SQV.
- Are naive to at least 1 NRTI. This means that there is at least 1 NRTI that the patient has not taken for more than 14 days. In the case of lamivudine (3TC), naive means that the patient has never taken this drug.
- Are willing and able to drink 1.5 liters (a little over 1.5 quarts) of water or other fluids a day.
- Agree to use an effective barrier method of birth control (such as condoms) during the study and for 3 months after.
Who cannot join
- Patients will not be eligible for this study if they:
- Have taken protease inhibitors other than APV, NFV, SQV, or NFV plus SQV.
- Are resistant to the effects of IDV or RTV, as shown by a blood test. (Patients whose viral load is between 500 and 1,000 copies/ml will not need to be tested.)
- Have any active opportunistic (AIDS-related) infection in the 14 days before study entry.
- Have any medical condition or history of disease that would prevent them from completing the study or put them at risk.
- Have cancer that requires chemotherapy.
Show all 13Show fewer
- Have an active infection that requires treatment in the 14 days before study entry.
- Have a fever for a week or more in the 30 days before study entry.
- Have taken nonnucleoside reverse transcriptase inhibitors (NNRTIs) in the 30 days before study entry.
- Have received a vaccine in the 21 days before study entry.
- Have received an experimental drug or a drug that affects the immune system in the 30 days before study entry.
- Have taken or plan to take certain other medications that may affect the study.
- Are pregnant or breast-feeding.
Trial locations and contacts
7 sites in 1 country.
7 sites in 1 country
United States7 sites
Johns Hopkins Adult AIDS CRS
Baltimore, Maryland, 21287
Alabama Therapeutics CRS
Birmingham, Alabama, 35294
Univ. of Cincinnati CRS
Cincinnati, Ohio, 452670405
USC CRS
Los Angeles, California, 900331079
NY Univ. HIV/AIDS CRS
New York, New York, 10016
Pitt CRS
Pittsburgh, Pennsylvania, 15213
Ucsf Aids Crs
San Francisco, California, 94110
About this study
Official title: A Phase I/II, Randomized, Open-Label Study of the Safety and Pharmacokinetics of Indinavir + Ritonavir Therapy in HIV-Infected Subjects Failing Amprenavir, Nelfinavir, Saquinavir, or Nelfinavir/Saquinavir Combination Therapy
In this study, the protease inhibitors indinavir (IDV) and ritonavir (RTV) will be studied in patients who have high levels of virus while taking other protease inhibitors. The purpose of this study is to see how the body takes in, distributes, and gets rid of IDV and RTV. This study will also look at any side effects that IDV or RTV causes.
IDV is an effective anti-HIV drug, but it can be difficult for patients to take. For IDV to work against HIV, it must be taken 3 times a day at a high dose and with a certain diet. Doctors believe IDV may be easier to take if it is given with RTV. Patients who take IDV and RTV together may be able to take IDV only twice a day and at a lower dose. This study will gather information about the safety and side effects of using IDV and RTV together.
Read the detailed description
IDV, a protease inhibitor, has shown excellent clinical and virologic responses when combined with 2 nucleoside analogues. Although effective, the pharmacokinetics of IDV make it difficult to use in many patients. The drug has a short half-life and requires administration in high doses every 8 hours with significant dietary restrictions. Research has shown that IDV kinetics can be improved significantly by the addition of RTV, allowing for administration of IDV at lower doses every 12 hours. The half-life of IDV is prolonged 3- to 5-fold when administered with RTV. Based on these results, it is reasonable to study this combination as a twice-daily dosing regimen.
Patients are randomized to receive 1 of 2 doses of IDV/RTV for 24 weeks (Arms A and B). All patients also receive 2 nucleoside reverse transcriptase inhibitors (NRTIs). The NRTIs are not provided by the study. Clinical assessments take place at Weeks 1, 2, 4, 8, 12, 16, 20, and 24 which includes a virology assessment. [AS PER AMENDMENT 4/21/00: Patients who experience a confirmed virologic failure (defined in protocol) and elect to remain on study treatment, are followed through Week 24. Patients who experience a confirmed virologic failure and elect to discontinue study treatment will have a final evaluation at the time of treatment discontinuation.] Patients are hospitalized for 12 hours at the Week 2 study visit for an intensive pharmacokinetic analysis.
- Conditions
- HIV Infections
- Being tested
- Indinavir sulfate, Ritonavir
- Keywords
- Dose-Response Relationship, Drug, Drug Therapy, Combination, HIV Protease Inhibitors, Ritonavir, Indinavir, Anti-HIV Agents, Pharmacokinetics, Treatment Experienced
- Medical subject headings
- HIV Infections
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Indinavir sulfateDrug
RitonavirDrug
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted31 Aug 2001 (estimated)
- Study completionAug 2006
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)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 National Institute of Allergy and Infectious Diseases (NIAID)The 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 1
- Primary purpose
- Treatment
- Enrolment
- 50 participants
Sponsor and investigators
- Sponsor type
- US National Institutes of Health
- Responsible party
- Sponsor
- Investigators
- John G. Gerber, Study chairEdward P. Acosta, Study chair
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00001133
- Sponsor's protocol ID
- A5055
- Other IDs
- 10672, ACTG A5055, AACTG A5055
- Status last verified
- Oct 2021
- First submitted
- 17 Jan 2000
- Last updated
- 1 Nov 2021
- Results posted
- No
Publications
Acosta EP, Wu H, Hammer SM, Yu S, Kuritzkes DR, Walawander A, Eron JJ, Fichtenbaum CJ, Pettinelli C, Neath D, Ferguson E, Saah AJ, Gerber JG; Adult AIDS Clinical Trials Group 5055 Protocol Team. Comparison of two indinavir/ritonavir regimens in the treatment of HIV-infected individuals. J Acquir Immune Defic Syndr. 2004 Nov 1;37(3):1358-66. doi: 10.1097/00126334-200411010-00004.
PubMed 15483465King JR, Gerber JG, Fletcher CV, Bushman L, Acosta EP. Indinavir protein-free concentrations when used in indinavir/ritonavir combination therapy. AIDS. 2005 Jul 1;19(10):1059-63. doi: 10.1097/01.aids.0000174452.78497.54.
PubMed 15958837Wu H, Huang Y, Acosta EP, Park JG, Yu S, Rosenkranz SL, Kuritzkes DR, Eron JJ, Perelson AS, Gerber JG. Pharmacodynamics of antiretroviral agents in HIV-1 infected patients: using viral dynamic models that incorporate drug susceptibility and adherence. J Pharmacokinet Pharmacodyn. 2006 Aug;33(4):399-419. doi: 10.1007/s10928-006-9006-4. Epub 2006 Apr 1.
PubMed 16583266
Study at a glance
From the registry record, last updated by the sponsor on 1 Nov 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase I/II, Randomized, Open-Label Study of the Safety and Pharmacokinetics of Indinavir + Ritonavir Therapy in HIV-Infected Subjects Failing Amprenavir, Nelfinavir, Saquinavir, or Nelfinavir/Saquinavir Combination Therapy
- ClinicalTrials.gov ID
- NCT00001133
- Acronym / sponsor ID
- A5055
- Conditions
- HIV Infections
- Keywords
- Dose-Response Relationship, Drug, Drug Therapy, Combination, HIV Protease Inhibitors, Ritonavir, Indinavir, Anti-HIV Agents, Pharmacokinetics, Treatment Experienced
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 50 participants
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)US National Institutes of Health
- Study completion
- Aug 2006 (actual)
- First posted
- 31 Aug 2001 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
In this study, the protease inhibitors indinavir (IDV) and ritonavir (RTV) will be studied in patients who have high levels of virus while taking other protease inhibitors. The purpose of this study is to see how the body takes in, distributes, and gets rid of IDV and RTV. This study will also look at any side effects that IDV or RTV causes.
IDV is an effective anti-HIV drug, but it can be difficult for patients to take. For IDV to work against HIV, it must be taken 3 times a day at a high dose and with a certain diet. Doctors believe IDV may be easier to take if it is given with RTV. Patients who take IDV and RTV together may be able to take IDV only twice a day and at a lower dose. This study will gather information about the safety and side effects of using IDV and RTV together.
Detailed description
IDV, a protease inhibitor, has shown excellent clinical and virologic responses when combined with 2 nucleoside analogues. Although effective, the pharmacokinetics of IDV make it difficult to use in many patients. The drug has a short half-life and requires administration in high doses every 8 hours with significant dietary restrictions. Research has shown that IDV kinetics can be improved significantly by the addition of RTV, allowing for administration of IDV at lower doses every 12 hours. The half-life of IDV is prolonged 3- to 5-fold when administered with RTV. Based on these results, it is reasonable to study this combination as a twice-daily dosing regimen.
Patients are randomized to receive 1 of 2 doses of IDV/RTV for 24 weeks (Arms A and B). All patients also receive 2 nucleoside reverse transcriptase inhibitors (NRTIs). The NRTIs are not provided by the study. Clinical assessments take place at Weeks 1, 2, 4, 8, 12, 16, 20, and 24 which includes a virology assessment. [AS PER AMENDMENT 4/21/00: Patients who experience a confirmed virologic failure (defined in protocol) and elect to remain on study treatment, are followed through Week 24. Patients who experience a confirmed virologic failure and elect to discontinue study treatment will have a final evaluation at the time of treatment discontinuation.] Patients are hospitalized for 12 hours at the Week 2 study visit for an intensive pharmacokinetic analysis.
Study design
- Primary purpose
- Treatment
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (8 listed)
- Are HIV-positive.
- Are at least 18 years old.
- Have a viral load (level of HIV in the blood) of at least 500 copies/ml but no more than 100,000 copies/ml within 45 days of study entry.
- Have been taking the following anti-HIV drug combination for at least 12 weeks before study entry: 2 NRTIs plus amprenavir (APV), nelfinavir (NFV), saquinavir (SQV), or NFV plus SQV.
- Are naive to at least 1 NRTI. This means that there is at least 1 NRTI that the patient has not taken for more than 14 days. In the case of lamivudine (3TC), naive means that the patient has never taken this drug.
Key exclusion criteria (13 listed)
- Have taken protease inhibitors other than APV, NFV, SQV, or NFV plus SQV.
- Are resistant to the effects of IDV or RTV, as shown by a blood test. (Patients whose viral load is between 500 and 1,000 copies/ml will not need to be tested.)
- Have any active opportunistic (AIDS-related) infection in the 14 days before study entry.
- Have any medical condition or history of disease that would prevent them from completing the study or put them at risk.
- Have cancer that requires chemotherapy.
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 |
|---|---|---|
| Indinavir sulfate | Drug | – |
| Ritonavir | Drug | – |
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Nov 2021.
- Results publication: PubMed 15483465Acosta EP, Wu H, Hammer SM, Yu S, Kuritzkes DR, Walawander A, Eron JJ, Fichtenbaum CJ, Pettinelli C, Neath D, Ferguson E, Saah AJ, Gerber JG; Adult AIDS Clinical Trials Group 5055 Protocol Team. Comparison of two indinavir/ritonavir regimens in the treatment of HIV-infected individuals. J Acquir Immune Defic Syndr. 2004 Nov 1;37(3):1358-66. doi: 10.1097/00126334-200411010-00004.
- Results publication: PubMed 15958837King JR, Gerber JG, Fletcher CV, Bushman L, Acosta EP. Indinavir protein-free concentrations when used in indinavir/ritonavir combination therapy. AIDS. 2005 Jul 1;19(10):1059-63. doi: 10.1097/01.aids.0000174452.78497.54.
- Results publication: PubMed 16583266Wu H, Huang Y, Acosta EP, Park JG, Yu S, Rosenkranz SL, Kuritzkes DR, Eron JJ, Perelson AS, Gerber JG. Pharmacodynamics of antiretroviral agents in HIV-1 infected patients: using viral dynamic models that incorporate drug susceptibility and adherence. J Pharmacokinet Pharmacodyn. 2006 Aug;33(4):399-419. doi: 10.1007/s10928-006-9006-4. Epub 2006 Apr 1.
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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.
John G. Gerber study chair
Edward P. Acosta study chair
7 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing Indinavir sulfate and Ritonavir in people with HIV Infections, run by National Institute of Allergy and Infectious Diseases (NIAID) at 7 sites in United States.
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 8 inclusion and 13 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 1 Nov 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 7 sites in United States. 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 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00001133, which also lists 3 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 1 Nov 2021.