A Phase 3 interventional study of Cervavac as three dose regimen and Cervavac as two dose regimen in Human Papillomavirus Infection, sponsored by Serum Institute of India Pvt. Ltd.. Active, not recruiting at 4 sites in 3 countries. Open to female participants aged 15 Years to 25 Years. Per ClinicalTrials.gov, last updated 2026-06-29.
Sponsored by Serum Institute of India Pvt. Ltd. · Phase 3, Interventional, and Prevention
Human papillomavirus (HPV) infection is the most common viral infection of the reproductive tract. Up to 80%of the sexually active females and men will be infected with HPV at some point in their lives and some may be repeatedly infected. The main burden of HPV-related disease is due to cervical cancer. Since cervical screening only detects precancerous and cancerous changes after they have occurred, HPV vaccination is primary prevention. People with HIV infection, even when effectively treated with antiretroviral therapy (ARV),are at higher risk of acquiring infection with multiple HPV types and are also known to be predisposed to a higher risk of HPV infection and subsequent CIN lesions. Vaccination of this high-risk group with HPV vaccine is highly beneficial. SIIPL's qHPV vaccine CERVAVAC®, India's first indigenous qHPV vaccine has received marketing authorization in India. The current study is a Phase 3b study to evaluate the immunogenicity and safety of two- and three-dose schedules of SIIPL qHPV vaccine in women living with HIV (WLWH) aged 15-25years.
A Phase-3b, partially double-blind, randomized, multi-country study to assess the immunogenicity, safety, and reactogenicity of SIIPL qHPV vaccine in WLWH aged 15-25 years. A total of 450 subjects will be enrolled in the study such that 150 subjects in each group receive either 3-doses of SIIPL qHPV vaccine, 2-doses of SIIPL qHPV vaccine or 3-doses of Gardasil®.
Subjects will be randomized in a 1:1:1 ratio to a 2-dose or 3-dose schedule of SIIPL qHPV vaccine or 3-dose schedule of Gardasil®. This study is designed as a partially double-blind, randomized study with a primary objective to compare the immunogenicity of the 3-dose schedule of SIIPL qHPV vaccine versus a 3-dose schedule of Gardasil®. The secondary objectives include comparison in the immune response between WLWH receiving 2-dose schedule of SIIPL qHPV vaccine and a 3-dose schedule of SIIPL qHPV. The immunogenicity data will be collected up to Month 12 and data at 7-month will be considered for analysis of primary immunogenicity endpoints.
576 studies on the registry are indexed under Papillomavirus Infections; 132 are open to participants now.
This study's planned enrollment of 450 is above the median of 235 across 402 interventional studies indexed under Papillomavirus Infections.
Browse Papillomavirus Infections studies →Serum Institute of India Pvt. Ltd. is the lead sponsor of 26 studies on the registry; 6 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Women of (WOCBP) (sexually active/ ≥18 years of age) must meet all the following criteria:
Have practiced effective (such as any one of the following: oral, transdermal, injectable or implanted contraceptive; condoms; occlusive cap [diaphragm or cervical vault caps]; spermicidal foam/gel/cream, etc.) or have abstained from all activities that could result in pregnancy from the time of screening up to first vaccine administration (Day 0).
Have a negative Urine Pregnancy Test (UPT) at screening and on the day of vaccination (Day 0).
Have agreed to continue effective contraception during the entire treatment period and for two months after completion of the vaccination series.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
The number of CD4 cells, a type of white blood cell, in a given amount of blood. It is used to follow how well the immune system is doing in HIV.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
CD4 count
The number of CD4 cells, a type of white blood cell, in a given amount of blood. It is used to follow how well the immune system is doing in HIV.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Recombinant Quadrivalent Human Papillomavirus (Types 6,11 16, 18) Vaccine manufactured by Serum Institute of India Pvt Ltd administered as three doses at day 0, 60 and 180.
Biological: Cervavac as three dose regimen
Recombinant Quadrivalent Human Papillomavirus (Types 6,11 16, 18) Vaccine manufactured by Serum Institute of India Pvt Ltd administered as two doses at day 0 and 180.
Biological: Cervavac as two dose regimen
Recombinant Quadrivalent Human Papillomavirus (Types 6,11 16, 18) Vaccine manufactured by MSD administered as three doses at day 0, 60 and 180.
Biological: Gardasil as three dose regimen
Cervavac manufactured by Serum Institute of India Pvt Ltd administered as three doses at day 0, 60 and 180.
Cervavac manufactured by Serum Institute of India Pvt Ltd administered as two doses at day 0 and 180.
Gardasil manufactured by MSD administered as a three doses at day 0,60 and 180.
Geometric mean titers of anti HPV 16 and 18 IgG antibodies
GMTs of anti HPV 16 and 18 IgG antibodies in WLWH receiving 3 doses of SIIPL qHPV and 3 doses of Gardasil®
Time frame: at 1 month after the last dose
Immune response (Geometric mean titers) of anti HPV 6 and 11 IgG antibodies
Geometric mean titers of anti HPV 6 and 11 IgG antibodies in WLWH receiving 3 doses of SIIPL qHPV or Gardasil
Time frame: at 1 month after the last dose
Geometric mean titers of anti HPV 6, 11, 16 and 18 IgG antibodies and Pecentage seroconversion
Geometric mean titers of anti HPV 6, 11, 16 and 18 IgG antibodies and Pecentage seroconversion in WLWH receiving 2 doses or 3 doses of SIIPL qHPV or 3 doses of Gardasil
Time frame: at 1 month after the last dose
Adverse Events
Incidence, severity, and relationship of local and systemic solicited AEs up to 7 days following each vaccination. Incidence, severity, and relationship of unsolicited AEs from Day 0 through Month 7 and Month 12. Incidence, severity, and relationship of SAEs from Day 0 through Month 7 and Month 12.
Time frame: solicited AEs up to 7 days following each vaccination, unsolicited AEs from Day 0 through Month 7 and Month12 and SAEs from Day 0 through Month 7 and Month 12.
Geometric mean titers of anti HPV 6, 11, 16 and 18 IgG antibodies and Pecentage seroconversion
Immune response to HPV types 6, 11, 16 \& 18 in WLWH receiving 2 doses of SIIPL qHPV vaccine, 3 doses of SIIPL qHPV vaccine and 3 doses of Gardasil® vaccine, at Month 12.
Time frame: at Month 12
Geometric mean titers of anti HPV 6, 11, 16 and 18 IgG antibodies and Pecentage
Immune response to HPV types 6, 11, 16 \& 18 after 1st dose
Time frame: at Month 2 and 6
CD4+ cell count, HIV viral load, and HIV clinical staging
Assessment of CD4+ cell count, HIV viral load, and HIV clinical staging in WLWH
Time frame: at Month 7 and Month 12
Plan to share: Yes — Summary results for primary and secondary objectives
Supporting information: Study protocol
Time frame: 12 Months after completion of the study
Access criteria: Researchers who provide a methodologically sound proposal may be provided the access after Sponsor permission and if signed data-access agreements are in place.
No publications or documents are linked to this record.
Started Oct 2025 (actual). Primary completion is estimated for Dec 2026, 14 months after the start.
Of 54 industry-sponsored phase 3 interventional studies under Papillomavirus Infections, half reached primary completion within 24 months of starting (the median), counting those still running; a quarter within 13 and three quarters within 64. This study's planned 14 months is below that.
Counting every sponsor, half of 60 studies reached it within 29 months; a quarter within 16 and three quarters within 67.
How these figures are worked out, and which studies are left out of them.
This study is active, not recruiting, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.
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