Cytomegalovirus (CMV) InfectionsPhase 2NCT03486834
V160 2-Dose and 3-Dose Regimens in Healthy Cytomegalovirus (CMV) Seronegative Females (V160-002)
A Phase 2 study testing V160 in people with Cytomegalovirus (CMV) Infections, run by Merck Sharp & Dohme LLC at 95 sites in 7 countries.
Trial summary
This study evaluated the safety, tolerability, and efficacy of the cytomegalovirus (CMV) vaccine (V160) administered in a 2-dose or 3-dose regimen to healthy seronegative women 16 to 35 years of age. Read more about this study
- Who is it for?
- Ages 16 to 35 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Cytomegalovirus (CMV) Infections
- What is being tested?
- V160
- Type of treatment
- Vaccines, Injection or infusion
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 2,200 participants
- Where
- 95 sitesin 7 countries
- Study dates
- 30 Apr 2018to 30 Jun 2021
- Phase
- Phase 2
- 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 16 to 35 years
- Women only
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- Healthy based on medical history and physical examination.
- Serologically confirmed to be CMV seronegative prior to receiving the first dose of V160/placebo
- Have direct exposure to young children (≤5 years of age) at home or occupationally
- Of childbearing potential
- Agrees to avoid becoming pregnant during the 6-month treatment period and for at least 4 weeks after the last dose of study drug by either 1) practicing abstinence from heterosexual activity, or 2) use a highly-effective method of birth control (as specified in the protocol) during heterosexual activity.
Who cannot join
- Has a history or current evidence of any condition, therapy, laboratory abnormality or other circumstance that might expose the participant to risk by participating in the trial, confound the results of the trial, or interfere with participation for the full duration of the trial, as assessed by the investigator
- Has history of allergic reaction or anaphylactic reaction to any vaccine component that required medical intervention or of any severe allergic reaction to any vaccine component that required medical intervention.
- Has a recent (<72 hours) history of febrile illness (temperature ≥100.4°F/38.0°C, oral equivalent)
- Is currently immunocompromised or has been diagnosed as having a congenital or acquired immunodeficiency, human immunodeficiency virus (HIV) infection, lymphoma, leukemia, systemic lupus erythematosus, rheumatoid arthritis, juvenile rheumatoid arthritis, inflammatory bowel disease, or other autoimmune condition that requires immunosuppressive medication.
- Has a condition in which repeated venipuncture or injections pose more than minimal risk for the participant.
- A woman of childbearing potential (WOCBP) who has a positive pregnancy test at screening or within 24 hours before the first dose of study treatment.
Show all 16Show fewer
- Has previously received a CMV vaccine.
- Had any live virus vaccine administered or scheduled to be administered in the period from 4 weeks prior to, and 4 weeks following receipt of any dose of trial vaccine.
- Had any inactivated vaccine administered or scheduled within the period from 14 days prior to, through 14 days following, any dose of trial vaccine.
- Had administration of any immune globulin or blood product within 90 days prior to injection with V160/placebo or scheduled within 30 days thereafter.
- Received systemic corticosteroids (equivalent of ≥2 mg/kg total daily dose of prednisone or ≥20 mg/d for persons weighing >10 kg) for ≥14 consecutive days and has not completed treatment at least 30 days prior to trial entry.
- Received systemic corticosteroids exceeding physiologic replacement doses (≈5 mg/d prednisone equivalent) within 14 days prior to the first vaccination (participants using inhaled, nasal, or topical steroids are considered eligible for the trial).
- Received any anti-viral agent with proven or potential activity against CMV two weeks prior to vaccination or is likely to receive such an agent within 2 weeks after vaccination.
- Receiving or has received in the year prior to enrollment immunosuppressive therapies or other therapies used for solid organ/cell transplant, radiation therapy, immunosuppressive/cytotoxic immunotherapy, chemotherapy and other immunosuppressive therapies known to interfere with the immune response. Topical tacrolimus is allowed provided that it is not used within 2 weeks prior to, or 2 weeks following a V160 dose.
- Participated in another clinical trial in the past 4 weeks, or plans to participate in a treatment-based trial or a trial in which an invasive procedure is to be performed while enrolled in this trial.
- Plans donation of eggs at any time from signing the informed consent through 1 month after receiving the last dose of the trial V160/placebo.
Trial locations and contacts
95 sites in 7 countries.
95 sites in 7 countries
United States54 sites
Albuquerque Clinical Trials ( Site 0052)
Albuquerque, New Mexico, 87102
Heartland Research Associates, LLC ( Site 0044)
Augusta, Kansas, 67010
Tekton Research, Inc. ( Site 0036)
Austin, Texas, 78745
University of Maryland School of Medicine ( Site 0041)
Baltimore, Maryland, 21201
Alabama Clinical Therapeutics ( Site 0025)
Birmingham, Alabama, 35205
Achieve Clinical Research, LLC ( Site 0055)
Birmingham, Alabama, 35216
Synexus US Phoenix Southeast ( Site 0057)
Chandler, Arizona, 85224
Coastal Pediatric Research ( Site 0010)
Charleston, South Carolina, 29414
Cincinnati Children's Hospital Medical Center ( Site 0003)
Cincinnati, Ohio, 45229
Senders Pediatrics ( Site 0060)
Cleveland, Ohio, 44121
Rapid Medical Research, Inc. ( Site 0038)
Cleveland, Ohio, 44122
Columbus Regional Research Institute ( Site 0298)
Columbus, Georgia, 31904
Clinical Research of South Florida ( Site 0047)
Coral Gables, Florida, 33134
Coastal Bend Clinical Research ( Site 0299)
Corpus Christi, Texas, 78413
Radiant Research - Dallas ( Site 0045)
Dallas, Texas, 75234
Carolina Women's Research and Wellness Center ( Site 0035)
Durham, North Carolina, 27713
University of Texas Medical Branch at Galveston ( Site 0049)
Galveston, Texas, 77555-1115
Parkside Pediatric ( Site 0288)
Greenville, South Carolina, 29607
ACC Pediatric Research ( Site 0022)
Haughton, Louisiana, 71037
Indago Research & Health Center, Inc ( Site 0007)
Hialeah, Florida, 33012
NF Research Center LLC ( Site 0013)
Hialeah, Florida, 33012
Best Quality Research Inc. ( Site 0031)
Hialeah, Florida, 33016
Juno Research, LLC ( Site 0293)
Houston, Texas, 77074
Care Partners Clinical Research, LLC ( Site 0002)
Jacksonville, Florida, 32277
L&C Professional Medical Research Institute ( Site 0021)
Miami, Florida, 33144
Advanced Medical Research Institute ( Site 0296)
Miami, Florida, 33174
Kendall South Medical Center, Inc ( Site 0008)
Miami, Florida, 33185
New Age Medical Research Corporation ( Site 0018)
Miami, Florida, 33186
Coastal Carolina Research Center ( Site 0053)
Mt. Pleasant, South Carolina, 29464
Mid Hudson Medical Research ( Site 0294)
New Windsor, New York, 12553
St Michaels Med Center ( Site 0285)
Newark, New Jersey, 07102
Health Research of Hampton Roads, Inc. ( Site 0014)
Newport News, Virginia, 23606
Heartland Research Associates, LLC ( Site 0023)
Newton, Kansas, 67114
Clinical Research Associates of Tidewater ( Site 0056)
Norfolk, Virginia, 23507
York Clinical Research, LLC ( Site 0033)
Norfolk, Virginia, 23510
Lynn Health Science Institute ( Site 0287)
Oklahoma City, Oklahoma, 73112
Clinical Associates of Orlando, LLC ( Site 0032)
Orlando, Florida, 32806
Accurate Clinical Management, LLC ( Site 0028)
Pasadena, Texas, 77504
PMG Research of Raleigh, LLC ( Site 0048)
Raleigh, North Carolina, 27609
Inland Empire Liver Foundation ( Site 0026)
Rialto, California, 92377
National Clinical Research-Richmond, Inc. ( Site 0051)
Richmond, Virginia, 23294
Integrated Research of Inland, Inc. ( Site 0042)
Riverside, California, 92506
Diagnostics Research Group ( Site 0001)
San Antonio, Texas, 78229
Synexus Research ( Site 0058)
San Antonio, Texas, 78229
California Research Foundation ( Site 0286)
San Diego, California, 92123
Multicare / Rockwood Clinic ( Site 0034)
Spokane, Washington, 99202
Premier Clinical Research Group ( Site 0050)
Spokane, Washington, 99202
Palmetto Clinical Research ( Site 0289)
Summerville, South Carolina, 29485
Bayview Research Group, LLC ( Site 0012)
Valley Village, California, 91607
Crossroads Clinical Research LLC ( Site 0283)
Victoria, Texas, 77901
Diablo Clinical Research, Inc ( Site 0009)
Walnut Creek, California, 94598
Emerson Clinical Research Institute ( Site 0297)
Washington D.C., District of Columbia, 20011
Heartland Research Associates, LLC ( Site 0019)
Wichita, Kansas, 67205
PMG Research of Wilmington ( Site 0006)
Wilmington, North Carolina, 28401
Finland10 sites
Tampereen yliopisto Espoon rokotetutkimusklinikka ( Site 0186)
Espoo, 02230
Tampereen yliopisto Etela-Helsingin Rokotetutkimusklinikka ( Site 0188)
Helsinki, 00100
Ita-Helsingin Rokotetutkimuskeskus ( Site 0184)
Helsinki, 00930
Jarvenpaan rokotetutkimuskeskus ( Site 0185)
Jarvenpaa, 04400
Tampereen yliopisto Kokkolan rokotetutkimusklinikka ( Site 0190)
Kokkola, 67100
Tampereen yliopisto Oulun rokotetutkimusklinikka ( Site 0187)
Oulu, 90220
Pori Vaccine Research Center ( Site 0182)
Pori, 28100
Seinajoki Vaccine Research Center ( Site 0189)
Seinäjoki, 60100
Tampereen yliopisto Rokotetutkimuskeskus ( Site 0181)
Tampere, 33100
Turku Vaccine Research Center ( Site 0183)
Turku, 20520
Canada8 sites
Clinique OVO ( Site 0067)
Montreal, Quebec, H4P 2S4
McGill University Health Centre - Vaccine Study Centre ( Site 0064)
Pierrefonds, Quebec, H9H 4Y6
CHUQ - Unite de Recherche en Sante Publique ( Site 0065)
Québec, Quebec, G1E 7G9
Diex Recherche Quebec Inc ( Site 0069)
Québec, Quebec, G1N 4V3
Diex Recherche Sherbrooke Inc. ( Site 0066)
Sherbrooke, Quebec, J1L 0H8
PrimeHealth Clinical Research ( Site 0070)
Toronto, Ontario, M4S 1Y2
Vaccine Evaluation Center ( Site 0264)
Vancouver, British Columbia, V5Z 4H4
Diex Recherche Victoriaville Inc. ( Site 0068)
Victoriaville, Quebec, G6P 6P6
Israel8 sites
Rambam Medical Center - Health Care Campus ( Site 0219)
Haifa, 3109601
Hadassah Ein Kerem Medical Center ( Site 0216)
Jerusalem, 9112001
Meir MC ( Site 0213)
Kfar Saba, 4428164
Western Galilee Hospital ( Site 0212)
Nahariya, 2222214
Rabin Medical Center ( Site 0218)
Petah Tikva, 4941492
Sakhnin west neighbourhood ( Site 0211)
Sakhnin, 3081000
Sourasky Medical Center ( Site 0217)
Tel Aviv, 6423906
Maccabi Healthcare Services ( Site 0220)
Tel Aviv, 6789140
Russia6 sites
Limited Liability Company Medical Centre Aibolit ( Site 0229)
Kazan', 420073
LLC Scientific Research Medical Complex Your Health. ( Site 0230)
Kazan', 420097
City Clinical Hospital 13 of Moscow ( Site 0232)
Moscow, 115280
Antenatal clinic #22 ( Site 0225)
Saint Petersburg, 194354
Siberian State Medical University ( Site 0231)
Tomsk, 634050
Central City Hospital 7 ( Site 0237)
Yekaterinburg, 620137
Australia5 sites
Paratus Clinical Pty Ltd - Blacktown Clinic ( Site 0247)
Blacktown, New South Wales, 2148
Paratus Clinical Kanwal - Trial Clinic ( Site 0243)
Kanwal, New South Wales, 2259
University of the Sunshine Coast Clinical Trials Centre ( Site 0244)
Morayfield, Queensland, 4506
University of the Sunshine Coast Clinical Trials Centre ( Site 0245)
Sippy Downs, Queensland, 4556
Holdsworth House Medical Practice ( Site 0241)
Sydney, New South Wales, 2010
Spain4 sites
Hospital Clinic de Barcelona ( Site 0155)
Barcelona, 08036
Hospital Universitario 12 de Octubre ( Site 0152)
Madrid, 28041
Hospital Universitario La Paz ( Site 0157)
Madrid, 28046
Hospital Clinico Universitario de Santiago ( Site 0151)
Santiago de Compostela, 15706
About this study
Official title: Double-Blind, Randomized, Placebo-Controlled Phase 2b, Multi-center Study to Evaluate the Safety, Tolerability, Efficacy and Immunogenicity of a 2-Dose and a 3-Dose Regimen of V160 (Cytomegalovirus [CMV] Vaccine) in Healthy Seronegative Women, 16 to 35 Years of Age
This study evaluated the safety, tolerability, and efficacy of the cytomegalovirus (CMV) vaccine (V160) administered in a 2-dose or 3-dose regimen to healthy seronegative women 16 to 35 years of age. Participants received blinded V160 on Day 1, Month 2, and Month 6 (3-dose regimen), V160 on Day 1 and Month 6 and placebo at Month 2 (2-dose regimen), or placebo on Day 1, Month 2, and Month 6, and were followed to approximately Month 24. The primary hypothesis of the study was that administration of a 3-dose regimen of V160 will reduce the incidence of primary CMV infection compared to placebo.
- Conditions
- Cytomegalovirus (CMV) Infections
- Being tested
- V160, Placebo
- Keywords
- Prevention of cytomegalovirus infection (CMVi)
- Medical subject headings
- Infections
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
V160Biological
Also called Human cytomegalovirus vaccine
V160 was administered as a 0.5 mL (100 Units/0.5 mL dose with Merck aluminum phosphate adjuvant [MAPA], 4°C stable formulation) IM injection.
PlaceboDrug
Saline solution administered as a 0.5 mL IM injection
| Study group | Role | What they receive |
|---|---|---|
| V160 3-Dose Regimen | Experimental | Participants received 3 doses of vaccine V160 (100 Units/0.5 mL dose with Merck aluminum phosphate adjuvant [MAPA], 4°C stable formulation) administered by intramuscular (IM) injection on Day 1, Month 2, and Month 6. Receives: Biological: V160 |
| V160 2-Dose Regimen | Experimental | Participants received 2 doses of vaccine V160 (100 Units/0.5 mL dose with MAPA, 4°C stable formulation) administered IM on Day 1 and Month 6 and a placebo-saline solution at Month 2. Receives: Biological: V160; Drug: Placebo |
| Placebo | Placebo comparator | Participants received placebo (saline solution) by IM injection on Day 1, Month 2, and Month 6. Receives: Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Participants Who Became Infected With Wild-Type Cytomegalovirus Infection Starting at 4 Weeks Post Last Dose (V160 3-dose Regimen Group and Placebo Group)
Cytomegalovirus infection (CMVi) was defined as the detection of wild-type cytomegalovirus (CMV) (non vaccine type) by polymerase chain reaction in a single saliva or urine sample in a previously CMV-uninfected participant. CMVi cases in the 3-dose regimen and placebo groups were reported and incidence rate (per 100 person-years) calculated based on follow-up time starting at 4 weeks post last dose (Month 7) through approximately Month 24 (or time point to reach required cases for assessment). The percent reduction in CMVi incidence rate in the 3-dose regimen group compared to the placebo group was assessed.
Measured: 4 weeks post last vaccination (Month 7) up to ~Month 24
Number of Participants With Solicited Injection-site Adverse Events
An adverse event (AE) is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study treatment. Following vaccination with V160 or placebo, the number of participants with solicited injection-site AEs was assessed. The solicited injection-site AEs assessed were redness/erythema, swelling, and pain.
Measured: Up to 5 days after each vaccination
Number of Participants With Solicited Systemic AEs
An AE is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study treatment. Following vaccination with V160 or placebo, the number of participants with solicited systemic AEs was assessed. The solicited systemic AEs assessed were fatigue, joint pain/arthralgia, muscle pain/myalgia, and headache.
Measured: Up to 14 days after each vaccination
Number of Participants With Vaccine-related Serious Adverse Events
A serious adverse event (SAE) is an AE that is life-threatening, requires or prolongs an existing hospitalization, results in persistent or significant disability or incapacity, is a congenital anomaly or birth defect, or is another important medical event deemed such by medical or scientific judgment. Relatedness of an SAE to the study vaccine was determined by the investigator. Following vaccination with V160 or placebo, the number of participants with vaccine-related serious adverse events was assessed.
Measured: Up to 14 days after each vaccination
Secondary outcomes (1)
Number of Participants Who Became Infected With Wild-Type CMV Infection Starting at 4 Weeks Post Last Dose (V160 2-dose Regimen Group and Placebo Group)
CMVi is defined as detection of wild-type CMV (non-vaccine type) by polymerase chain reaction in a single saliva or urine sample in a previously CMV-uninfected participant. CMVi cases in the 2-dose regimen and placebo groups were reported and incidence rate (per 100 person-years) calculated based on follow-up time starting at 4 weeks post last dose (Month 7) through approximately Month 24 (or time point to reach required cases for assessment). The percent reduction in CMVi incidence rate in the 2-dose regimen group compared to the placebo group was assessed.
Measured: 4 weeks post last vaccination (Month 7) up to ~Month 24
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 Apr 2018
- Study start30 Apr 2018
- Primary completion30 Oct 2020
- Study completion30 Jun 2021
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 (1)Papers the sponsor has linked to this study.
- Other trials for Cytomegalovirus (CMV) InfectionsStudies of the same condition, open and under way.
- More trials run by Merck Sharp & Dohme LLCThe 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 2
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 2,200 participants (actual)
Sponsor and investigators
- Lead sponsor
- Merck Sharp & Dohme LLC
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Medical Director, Study director, Merck Sharp & Dohme LLC
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03486834
- Sponsor's protocol ID
- V160-002
- Other IDs
- 2017-004233-86, 2017
- Status last verified
- Jan 2024
- First submitted
- 28 Mar 2018
- Last updated
- 23 Jan 2024
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf
Publications
Das R, Blazquez-Gamero D, Bernstein DI, Gantt S, Bautista O, Beck K, Conlon A, Rosenbloom DIS, Wang D, Ritter M, Arnold B, Annunziato P, Russell KL; V160-002 study group. Safety, efficacy, and immunogenicity of a replication-defective human cytomegalovirus vaccine, V160, in cytomegalovirus-seronegative women: a double-blind, randomised, placebo-controlled, phase 2b trial. Lancet Infect Dis. 2023 Dec;23(12):1383-1394. doi: 10.1016/S1473-3099(23)00343-2. Epub 2023 Aug 31.
PubMed 37660711
Study at a glance
From the registry record, last updated by the sponsor on 23 Jan 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Double-Blind, Randomized, Placebo-Controlled Phase 2b, Multi-center Study to Evaluate the Safety, Tolerability, Efficacy and Immunogenicity of a 2-Dose and a 3-Dose Regimen of V160 (Cytomegalovirus [CMV] Vaccine) in Healthy Seronegative Women, 16 to 35 Years of Age
- ClinicalTrials.gov ID
- NCT03486834
- Acronym / sponsor ID
- V160-002
- Conditions
- Cytomegalovirus (CMV) Infections
- Keywords
- Prevention of cytomegalovirus infection (CMVi)
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 2,200 participants (actual)
- Lead sponsor
- Merck Sharp & Dohme LLCIndustry (pharma, biotech, devices)
- Study start
- 30 Apr 2018 (actual)
- Primary completion
- 30 Oct 2020 (actual)
- Study completion
- 30 Jun 2021 (actual)
- First posted
- 3 Apr 2018 (actual)
- Results
- Posted 10 Nov 2021
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study evaluated the safety, tolerability, and efficacy of the cytomegalovirus (CMV) vaccine (V160) administered in a 2-dose or 3-dose regimen to healthy seronegative women 16 to 35 years of age. Participants received blinded V160 on Day 1, Month 2, and Month 6 (3-dose regimen), V160 on Day 1 and Month 6 and placebo at Month 2 (2-dose regimen), or placebo on Day 1, Month 2, and Month 6, and were followed to approximately Month 24. The primary hypothesis of the study was that administration of a 3-dose regimen of V160 will reduce the incidence of primary CMV infection compared to placebo.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| V160 3-Dose Regimen | Experimental | Biological: V160Participants received 3 doses of vaccine V160 (100 Units/0.5 mL dose with Merck aluminum phosphate adjuvant [MAPA], 4°C stable formulation) administered by intramuscular (IM) injection on Day 1, Month 2, and Month 6. |
| V160 2-Dose Regimen | Experimental | Biological: V160, Drug: PlaceboParticipants received 2 doses of vaccine V160 (100 Units/0.5 mL dose with MAPA, 4°C stable formulation) administered IM on Day 1 and Month 6 and a placebo-saline solution at Month 2. |
| Placebo | Placebo comparator | Drug: PlaceboParticipants received placebo (saline solution) by IM injection on Day 1, Month 2, and Month 6. |
Who may qualify
- Ages
- 16 to 35 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (5 listed)
- Healthy based on medical history and physical examination.
- Serologically confirmed to be CMV seronegative prior to receiving the first dose of V160/placebo
- Have direct exposure to young children (≤5 years of age) at home or occupationally
- Of childbearing potential
- Agrees to avoid becoming pregnant during the 6-month treatment period and for at least 4 weeks after the last dose of study drug by either 1) practicing abstinence from heterosexual activity, or 2) use a highly-effective method of birth control (as specified in the protocol) during heterosexual activity.
Key exclusion criteria (16 listed)
- Has a history or current evidence of any condition, therapy, laboratory abnormality or other circumstance that might expose the participant to risk by participating in the trial, confound the results of the trial, or interfere with participation for the full duration of the trial, as assessed by the investigator
- Has history of allergic reaction or anaphylactic reaction to any vaccine component that required medical intervention or of any severe allergic reaction to any vaccine component that required medical intervention.
- Has a recent (<72 hours) history of febrile illness (temperature ≥100.4°F/38.0°C, oral equivalent)
- Is currently immunocompromised or has been diagnosed as having a congenital or acquired immunodeficiency, human immunodeficiency virus (HIV) infection, lymphoma, leukemia, systemic lupus erythematosus, rheumatoid arthritis, juvenile rheumatoid arthritis, inflammatory bowel disease, or other autoimmune condition that requires immunosuppressive medication.
- Has a condition in which repeated venipuncture or injections pose more than minimal risk for the participant.
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 |
|---|---|---|
| V160Also: Human cytomegalovirus vaccineV160 was administered as a 0.5 mL (100 Units/0.5 mL dose with Merck aluminum phosphate adjuvant [MAPA], 4°C stable formulation) IM injection. | Biological | V160 2-Dose Regimen, V160 3-Dose Regimen |
| PlaceboSaline solution administered as a 0.5 mL IM injection | Drug | Placebo, V160 2-Dose Regimen |
Primary outcome
Number of Participants Who Became Infected With Wild-Type Cytomegalovirus Infection Starting at 4 Weeks Post Last Dose (V160 3-dose Regimen Group and Placebo Group)
Time frame: 4 weeks post last vaccination (Month 7) up to ~Month 24
Cytomegalovirus infection (CMVi) was defined as the detection of wild-type cytomegalovirus (CMV) (non vaccine type) by polymerase chain reaction in a single saliva or urine sample in a previously CMV-uninfected participant. CMVi cases in the 3-dose regimen and placebo groups were reported and incidence rate (per 100 person-years) calculated based on follow-up time starting at 4 weeks post last dose (Month 7) through approximately Month 24 (or time point to reach required cases for assessment). The percent reduction in CMVi incidence rate in the 3-dose regimen group compared to the placebo group was assessed.
Number of Participants With Solicited Injection-site Adverse Events
Time frame: Up to 5 days after each vaccination
An adverse event (AE) is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study treatment. Following vaccination with V160 or placebo, the number of participants with solicited injection-site AEs was assessed. The solicited injection-site AEs assessed were redness/erythema, swelling, and pain.
Number of Participants With Solicited Systemic AEs
Time frame: Up to 14 days after each vaccination
An AE is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study treatment. Following vaccination with V160 or placebo, the number of participants with solicited systemic AEs was assessed. The solicited systemic AEs assessed were fatigue, joint pain/arthralgia, muscle pain/myalgia, and headache.
Number of Participants With Vaccine-related Serious Adverse Events
Time frame: Up to 14 days after each vaccination
A serious adverse event (SAE) is an AE that is life-threatening, requires or prolongs an existing hospitalization, results in persistent or significant disability or incapacity, is a congenital anomaly or birth defect, or is another important medical event deemed such by medical or scientific judgment. Relatedness of an SAE to the study vaccine was determined by the investigator. Following vaccination with V160 or placebo, the number of participants with vaccine-related serious adverse events was assessed.
1 secondary outcome
Number of Participants Who Became Infected With Wild-Type CMV Infection Starting at 4 Weeks Post Last Dose (V160 2-dose Regimen Group and Placebo Group)
Time frame: 4 weeks post last vaccination (Month 7) up to ~Month 24
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 23 Jan 2024.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Results publication: PubMed 37660711Das R, Blazquez-Gamero D, Bernstein DI, Gantt S, Bautista O, Beck K, Conlon A, Rosenbloom DIS, Wang D, Ritter M, Arnold B, Annunziato P, Russell KL; V160-002 study group. Safety, efficacy, and immunogenicity of a replication-defective human cytomegalovirus vaccine, V160, in cytomegalovirus-seronegative women: a double-blind, randomised, placebo-controlled, phase 2b trial. Lancet Infect Dis. 2023 Dec;23(12):1383-1394. doi: 10.1016/S1473-3099(23)00343-2. Epub 2023 Aug 31.
- Individual participant dataSharing planned: Yes. http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf
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RecruitingPhase 2
Virus Specific Cytotoxic T-Lymphocytes (CTLs) for Refractory Cytomegalovirus (CMV)
Cytomegalovirus Infections, Primary Immune Deficiency Disorder
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.
Medical Director study director
Merck Sharp & Dohme LLC
95 sites in 7 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing V160 in people with Cytomegalovirus (CMV) Infections, run by Merck Sharp & Dohme LLC at 95 sites in 7 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 5 inclusion and 16 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 23 Jan 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 95 sites in United States, Finland, Canada, Israel, Russia and 2 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. Some participants in this study may receive a placebo. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
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 10 Nov 2021). 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?
Number of Participants Who Became Infected With Wild-Type Cytomegalovirus Infection Starting at 4 Weeks Post Last Dose (V160 3-dose Regimen Group and Placebo Group) (time frame: 4 weeks post last vaccination (Month 7) up to ~Month 24). The study lists 4 primary outcomes in all. 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 NCT03486834, which also lists 1 linked publication.
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 23 Jan 2024.