A Phase 3 interventional study of 9-valent human papillomavirus vaccine (Gardasil 9) - 3 doses and 9-valent human papillomavirus vaccine (Gardasil 9) - 2 doses in Human Papillomavirus Vaccine, sponsored by London School of Hygiene and Tropical Medicine. Status unknown at 1 site in Gambia. Open to female participants aged 4 Years to 26 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-03-31.
Sponsored by London School of Hygiene and Tropical Medicine · Phase 3, Interventional, and Prevention
A randomized, observer-blind non-inferiority trial to evaluate alternative human papillomavirus (HPV) vaccination schedules in young females in West Africa.
This study is a randomized, open-label, single-centre, phase 3 non-inferiority clinical trial of the Gardasil 9 vaccine. It will be undertaken in three female cohorts (15 to 26 years old; 9 to 14 years-olds and 4 to 8 year-olds). In total 1720 female participants will be recruited in a rural setting in The Gambia, West Africa.
The Gardasil 9 vaccine is a recombinant L 1 VLP vaccine containing HPV types 6, 11,16,18,31,33,45,52 and 58 VLP. It is licensed by both European Medicines Agency and the US Food and Drug Administration as a two or three dose schedule to 9 to 14 year olds and as a three dose schedule to 15 to 26 years olds. The license covers both males and females. The vaccine is not currently licensed for those under 9 years of age and it is not licenced in The Gambia.
All females within the 15 to 26 year-old cohort will receive three doses of Gardasil 9 at 0, 2 and 6 months and represent the reference group for the purposes of the serological non-inferiority analysis. This is the only group for which efficacy data for the vaccine are available. Females in the 9 to 14 year old and 4 to 8 year old cohorts will be randomized to receive either one or two doses of Gardasil 9. In both groups, the two doses will be administered at 0 and 6 months.
The primary and secondary immunogenicity objectives will be analysed based on serological Samples taken 4 to 6 weeks after the last dose of vaccine received according to group. Additional analysis will be undertaken at 12, 24 and 36 months. The Sampling schedule is aligned with the schedule in other immunogenicity trials to facilitate comparison and potential immunobridging to future one-dose efficacy data. In addition, the stability of the antibody concentrations between 12 and 24 and again between 24 and 36 months according to schedule and age-group aims to allow longer term predictions regarding the maintenance of antibody concentration to be made.
A Sub-study will be undertaken within the main trial to compare in detail early immunological events taking place following Gardasil 9. The quantitative and qualitative changes in these events following a first and following subsequent doses of the vaccine and also according to age will be assessed and related to the early and long-term antibody concentrations induced by the vaccine. There are currently no data exploring the basis for the progressive increase in the immunogenicity of the HPV vaccines apparent with decreasing age. These may have their origins in the early innate response following vaccination-which will be assessed at a cellular as well as transcriptomic level, as well as in the subsequent adaptive profile.
Similarly, the cellular basis for the sustained seropositivity induced by the HPV vaccines even apparent following a single vaccine dose is little understood. The window onto which plasmablasts and memory B-cell populations in the circulation is transient following vaccination. However, enumerating and characterizing these populations and relating them in the same way to early and long term antibody concentration aims to provide insight into the relative roles of these populations and how they are influenced by the age of the vaccine and the number of vaccine doses received.
Individuals in the sub-study will contribute serological data to the main trial and will be followed up in the same way but will be consented for one additional blood sample after each vaccination. Up to 120 participant in each group in the main trial will be randomized to groups A, B or C, with 40 participants in each of these groups. This number aims to generate a dataset of at least 30 analyzable individuals per schedule and age group.
London School of Hygiene and Tropical Medicine is the lead sponsor of 298 studies on the registry; 15 are open to participants now.
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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.
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A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
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.
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.
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.
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.
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.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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.
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.
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.
9-valent human papillomavirus vaccine (Gardasil 9) - 3 doses
Biological: 9-valent human papillomavirus vaccine (Gardasil 9) - 3 doses
9-valent human papillomavirus vaccine (Gardasil 9) - 2 doses
Biological: 9-valent human papillomavirus vaccine (Gardasil 9) - 2 doses
9-valent human papillomavirus vaccine (Gardasil 9) - 2 doses
Biological: 9-valent human papillomavirus vaccine (Gardasil 9) - 2 doses
9-valent human papillomavirus vaccine (Gardasil 9) - 1 dose
Biological: 9-valent human papillomavirus vaccine (Gardasil 9) - 1 dose
9-valent human papillomavirus vaccine (Gardasil 9) - 1 dose
Biological: 9-valent human papillomavirus vaccine (Gardasil 9) - 1 dose
0.5mL intramuscular dose - 3 doses (0, 2 and 6 months)
0.5mL intramuscular dose - 2 doses (0 and 6 months)
0.5mL intramuscular dose - 1 doses (0 months)
Antibodies measured by 9-valent HPV competitive Luminex immunoassay (cLIA) (mMU/mL)
HPV types, 6, 11, 16, 18, 31, 33, 45, 52 and 58
Time frame: 4 weeks after last vaccine dose
Acute allergic reaction (Grade 0 - 4)
Solicited systemic reactogenicity recorded in 4 to 8 year olds and 9 to 14 year olds
Time frame: Day of vaccination (day 0)
Injection site pain (Grade 0 - 4)
Solicited local reactogenicity recorded in 4 to 8 year olds and 9 to 14 year olds
Time frame: Days 0 to 6 after vaccination
Injection site redness (Grade 0 - 4)
Solicited local reactogenicity recorded in 4 to 8 year olds and 9 to 14 year olds
Time frame: Days 0 to 6 after vaccination
Injection site swelling (Grade 0 - 4)
Solicited local reactogenicity recorded in 4 to 8 year olds and 9 to 14 year olds
Time frame: Days 0 to 6 after vaccination
Injection site pruritus (Grade 0 - 4)
Solicited local reactogenicity recorded in 4 to 8 year olds and 9 to 14 year olds
Time frame: Days 0 to 6 after vaccination
Temperature in degrees Centigrade
Recorded in 4 to 8 year olds and 9 to 14 year olds
Time frame: Days 0 to 6 after vaccination
Nausea/vomiting (Grade 0 - 4)
Solicited systemic reactogenicity recorded in 4 to 8 year olds and 9 to 14 year olds
Time frame: Days 0 to 6 after vaccination
Headaches (Grade 0 - 4)
Solicited systemic reactogenicity recorded in 4 to 8 year olds and 9 to 14 year olds
Time frame: Days 0 to 6 after vaccination
Dizziness (Grade 0 - 4)
Solicited systemic reactogenicity recorded in 4 to 8 year olds and 9 to 14 year olds
Time frame: Days 0 to 6 after vaccination
Fatigue (Grade 0 - 4)
Solicited systemic reactogenicity recorded in 4 to 8 year olds and 9 to 14 year olds
Time frame: Days 0 to 6 after vaccination
Myalgia/arthralgia (Grade 0 - 4)
Solicited systemic reactogenicity recorded in 4 to 8 year olds and 9 to 14 year olds
Time frame: Days 0 to 6 after vaccination
Unsolicited adverse event (AE) including serious adverse events
Unsolicited AE will be recorded in 4 to 8 years olds and 9 to 14 year olds
Time frame: Day 0 to day 28 following each vaccination
Suspected unexpected serious adverse reactions (SUSAR)
SUSAR will be collected from all participants
Time frame: Day 0 to month 36
Antibodies measured by 9-valent HPV cLIA (mMU/mL)
HPV types, 6, 11, 16, 18, 31, 33, 45, 52 and 58
Time frame: 12 months after first vaccination
Antibodies measured by 9-valent HPV cLIA (mMU/mL)
HPV types, 6, 11, 16, 18, 31, 33, 45, 52 and 58
Time frame: 24 months after first vaccination
Antibodies measured by 9-valent HPV cLIA (mMU/mL)
HPV types, 6, 11, 16, 18, 31, 33, 45, 52 and 58
Time frame: 36 months after first vaccination
Antibodies measure by 9-valent HPV total IgG (TIgG)
HPV types, 6, 11, 16, 18, 31, 33, 45, 52 and 58
Time frame: 4 weeks after last vaccine dose
Antibodies measure by 9-valent HPV TIgG
HPV types, 6, 11, 16, 18, 31, 33, 45, 52 and 58
Time frame: 12 months after first vaccination
Antibodies measure by 9-valent HPV TIgG
HPV types, 6, 11, 16, 18, 31, 33, 45, 52 and 58
Time frame: 24 months after first vaccination
Antibodies measure by 9-valent HPV TIgG
HPV types, 6, 11, 16, 18, 31, 33, 45, 52 and 58
Time frame: 36 months after first vaccination
This study is status unknown, as verified in Mar 2022. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: Human Papillomavirus Recombinant Vaccine nonavalent
London School of Hygiene and Tropical Medicine →