Neoplasms

Urinary Tract, Sexual Organs, and Pregnancy Conditions

All Conditions

Infections

Symptoms and General Pathology

Uterine Cervical Neoplasms

Communicable Diseases

Papillomavirus Infections

Sexually Transmitted Diseases

Sexually Transmitted Diseases, Viral

Virus Diseases

DNA Virus Infections

Tumor Virus Infections

Genital Diseases

Urogenital Diseases

Disease Attributes

All Drugs and Chemicals

Pharmaceutical Solutions

Vaccines

Immunologic Factors

HPV vaccine intervention: The intervention vaccine will be Gardasil 9, a 9-valent vaccine by Merck. This vaccine was chosen because it allows for the observation of 9 HPV outcomes (HPV 6, 11, 16 and 18) (the other available vaccine, Cervarix, protects against HPVs 16 and 18, only).

The placebo comparator will be Avaxim, by Sanofi Pasteur. This control vaccine was chosen because hepatitis A immunization provides a similar health prevention incentive as HPV vaccination to study participants while preserving the scientific cogency of a "placebo" comparator. Gardasil 9 requires administration of 3 doses, while Avaxim only requires 2 doses. For this reason, a placebo injection (saline solution) will be added in between the Avaxim vaccination regimen. Consequently, both treatment and control vaccines will have similar regimens, i.e., study entry, 2 months, and 6 months.

Once recruited, both individuals in a couple will be randomized independently to Gardasil 9 or placebo (Avaxim).

HPV vaccine, Gardasil 9

Hepatitis A vaccine

Mariam El-Zein, PhD

Human papillomavirus (HPV) is a member of the Papillomaviridae family of DNA viruses that is capable of infecting humans. HPV infection can cause cancers of the cervix, vulva, vagina, and anus in women or cancers of the anus and penis in men. Two prophylactic vaccines have been proven to be highly effective in preventing the acquisition of HPV infection and the genital precancerous lesions caused by it. However, we do not know yet if a previously infected individual, once vaccinated, would be less infective to her or his sexual partner. We plan to conduct a study, called Transmission Reduction And Prevention with HPV vaccination (TRAP-HPV) study to answer this question. It will include 500 sexually active couples\* (total of 1000 individuals) in university student health clinics in Montreal (age 18-45 years). It will be a randomized placebo-controlled, double-blinded intervention trial. Study participants will be followed up to 12 months. Behavioural and biological data will be collected at the time of study enrolment, then at months 2, 4, 6, 9 and 12 post-enrolment. The results of this trial will be invaluable in informing policies regarding vaccination of women and men.

Two prophylactic vaccines (Gardasil by Merck, and Cervarix by GlaxoSmithKline) have been proven in randomized controlled trials (RCT) to be highly effective in preventing infection against the target HPV types (HPV-6, 11, 16 and 18, for Gardasil, and HPV-16/18, for Cervarix) and the cervical precancerous lesions caused by them. These vaccines have shifted the paradigm of prevention and are expected to have a major impact in reducing the burden of cervical cancer and of other HPV-associated malignancies, such as vulvar, vaginal, penile, anal, and oropharyngeal cancers, as well as benign HPV-associated conditions (in the case of Gardasil), such as anogenital warts and respiratory papillomatosis. However, little is known about the extent with which vaccination may reduce transmission between sexual partners; i.e. much remains to be understood on the effects of HPV vaccine in preventing transmission of target HPV types to sexual partners of vaccinated individuals and its impact on herd immunity.

The investigators propose to conduct a placebo-controlled, double-blinded RCT to measure the impact of vaccination in preventing HPV transmission within young (age 18-45) heterosexual couples at McGill and Concordia Universities in Montreal, Canada. Individual partners in 500 couples\* will be randomized to a treatment (Gardasil 9) or a control vaccine (Avaxim, a hepatitis A vaccine). This control vaccine provides a similar health benefit incentive as HPV vaccination while preserving the scientific cogency of a "placebo" comparator. Risk factor data will be collected via computerized questionnaires at enrolment (time 0), 2, 4, 6, 9 and 12 months. At all time points, the investigators will measure HPV DNA infection status by PCR in both partners in exfoliated penile, and oral samples from men and vaginal, oral samples from women. Assessing pre-enrolment humoral immune response to HPV infection with a competitive Luminex immunoassay (CLIA) will be done in an enrolment blood sample from all study participants.

The primary outcome will be the reduction of HPV DNA positivity for the target HPV vaccine types (types 6, 11, 16 and 18) in multiple anatomic sites in Avaxim-treated sexual partners of participants who received Gardasil 9. The investigators hypothesize that HPV vaccination is effective in reducing the risk of HPV transmission to their sexual partners. They will use the Kaplan-Meier technique and logrank tests to compare the cumulative probability of HPV infection in sexual partners of vaccinated versus unvaccinated individuals against follow-up time, and Cox proportional hazards regression to estimate the effect of vaccination and other covariates on transmission of HPV to sexual partners. Statistical analyses will follow an intention-to-treat approach but additional regression models will examine the role of several candidate determinants in mediating transmission and the protective effects. Mixed-effects models will also be used to take advantage of the repeated measurements across visits, HPV types, and anatomical sites for the same subject.

In addition to the findings on protection to unvaccinated partners, it is expected that this study will provide valuable insights as to whether protection may exist for a vaccine recipient in preventing infection in an anatomical site in which a target type has not yet established infection. These findings will generate key parameter data to inform the extent of herd immunity in cost-effectiveness models of HPV vaccination. Such models are essential to arrive at rational science-driven policies of HPV vaccination in girls and boys in Canada.

As of March 13, 2020, study visits were temporarily suspended due to the COVID-19 pandemic. With university approval, study visits were resumed as of May 26, 2020. This interruption in study visits lead to slight alterations in the timing of vaccinations, which will be adjusted for in the final analyses as required.

\*Due to challenges with participant recruitment, we will complete the study with 500 participants (250 couples), as opposed to the original target of 1000 participants (500 couples). This sample size is achievable based on current recruitment rates and will maintain enough statistical precision for the 2x2 factorial design of the study.

(full protocol available upon request)

Transmission Reduction and Prevention With HPV Vaccination (TRAP-HPV) Study

Transmission Reduction and Prevention With HPV Vaccination (TRAP-HPV) Study: A Randomized Controlled Trial of the Efficacy of HPV Vaccination in Preventing Transmission of HPV Infection in Heterosexual Couples

Reduction in HPV type concordance (for the four target types) will be the main outcome evaluable as per the above group contrasts. These comparisons will be done with due attention to the enrolment virological status of the individuals. For instance, it is expected that a Avaxim-treated woman who is positive for HPV 6 in the oral specimen but negative for this type in the vaginal specimen may derive benefit if her partner receives Gardasil, even if he is HPV-6 positive in the penile sample. The assumption is that protection via vaccination is pan-mucosal, via transudation of neutralizing antibodies; this protection may mediate transmission.

McGill University

James McGill Professor and Chair, Department of Oncology; Director, Division of Cancer Epidemiology

Nervous System Diseases

Rare Diseases

Glioma

Brain Neoplasms

Astrocytoma

Oligodendroglioma

Neoplasms, Neuroepithelial

Neuroectodermal Tumors

Neuroectodermal Tumors, Primitive

Neoplasms, Germ Cell and Embryonal

Neoplasms by Histologic Type

Neoplasms, Glandular and Epithelial

Neoplasms, Nerve Tissue

Neuroepithelioma

Antineoplastic Agents

Temozolomide

Patients undergo standard of care treatment and collection of blood samples as in Group I. Patients then receive hepatitis A and tetanus toxoid vaccinations at month 9.

Patients receive standard of care hepatitis A or B vaccine, tetanus toxoid vaccine, and trivalent influenza vaccine and then undergo standard of care treatment external beam radiation therapy and receive standard of care temozolomide. Patients also undergo collection of blood Samples monthly for the first 8 months and then bimonthly for up to 12 months for analysis via flow cytometry, (CFSE) assay, live cell/dead cell distinction assay, and determination of naïve and memory immune response.

Hepatitis A Vaccine

Laboratory Biomarker Analysis

Tetanus Toxoid Vaccine

Trivalent Influenza Vaccine

Roy Strowd

This research trial studies qualitative, qualitative, and functional studies over the first year in measuring immune system response in patients with brain tumors. Measuring the number of immune cells, whether these immune cells work correctly, and response to 2 vaccines at several times during the first year of treatment may help find out how active the immune system responds to fight infection and cancer.

PRIMARY OBJECTIVES:

I. To describe the quantity of immune cells underlying the antitumor immune response including dendritic cells, naive and activated T- and B-cells, regulatory T-cells, and natural killer cells.

II. To determine the proliferative ability of lymphocytes via T-cell activation.

SECONDARY OBJECTIVES:

I. To describe the immunologic response to the hepatitis A vaccine (or hepatitis B vaccine in those who are hepatitis A exposed) in comparison to expected/known normal responses either prior to (i.e. pre-treatment) or following chemoradiation (i.e. post-treatment).

II. To describe the immunologic response to tetanus toxoid vaccination compared to expected/known normal responses either prior to (i.e. pre-treatment) or following chemoradiation (i.e. post-treatment).

TERTIARY OBJECTIVES:

I. To describe the immunologic response to the yearly influenza vaccination over the course of the first year of therapy for glioma (timing of administration will be when clinically indicated over this year of therapy).

II. To describe the frequency of viral infection in glioma patients hospitalized during the respiratory viral season within year 1 of therapy.

III. To describe the overall survival of glioma patients enrolled in this study and describe the overall survival in these patients by changes in immunologic function.

OUTLINE: Patients are randomized to 1 of 2 groups.

GROUP I: Patients receive standard of care hepatitis A or B vaccine, tetanus toxoid vaccine, and trivalent influenza vaccine and then undergo standard of care treatment external beam radiation therapy and receive standard of care temozolomide. Patients also undergo collection of blood Samples monthly for the first 8 months and then bimonthly for up to 12 months for analysis via flow cytometry, carboxyfluorescein diacetate succinimidyl ester (CFSE) assay, live cell/dead cell distinction assay, and determination of naïve and memory immune response.

GROUP II: Patients undergo standard of care treatment and collection of blood samples as in Group I. Patients then receive hepatitis A and tetanus toxoid vaccinations at month 9.

Qualitative, Qualitative, and Functional Studies Over the First Year in Measuring Immune System Response During the First Year of Therapy in Patients With Brain Tumors

Determining the Competence of the Immune System Over the First Year of Therapy in Patients With Glioma: A Battery of Quantitative, Qualitative and Functional Measures of Immune Readiness

The distribution will be plotted using a histogram. Assessment of influenza vaccine immunogenicity will be performed. GMTs will be calculated at baseline and day 28. Seroconversion (i.e. 4-fold rise in GMT from baseline to day 28) will be determined. Proportions will be binned according to the timing of influenza vaccination: (1) pre-treatment, (2) during radiation, (3) during adjuvant chemotherapy, and (4) post-treatment. Seroconversion proportion within each time point will be compared against known normal using a one proportion test.

The Kaplan Meier method will be used to estimate OS probability and median time of survival along with 95% confidence interval. Proportional hazards models will be used to assess for associations between mortality and baseline quantitative immunologic values, baseline qualitative immunologic function, and baseline and post-treatment seroconversion to each vaccine (treated as a time dependent variable). All p-values will be reported as two-sided.

Baseline and day 28 geometric mean titers (GMTs) will be calculated for hepatitis A or B and tetanus. GMTs for patients undergoing vaccination pre- and post-treatment will be performed. The difference in 28 day GMT between pretreatment and posttreatment will be compared using the paired t test. Analysis of covariance will be used to identify predictors that are associated with the change of 28 day difference in GMT. Seroconversion or a 4-fold rise in GMT from baseline to day 28 will be determined for pre and post treatment patient cohorts. Seroconversion proportion will be compared against kno

Mean values of the quantitative measures and proliferative ability will be calculated for each four time points and compared to determine the trajectory over time as described. In addition, the repeated measures for quantitative measures will be displayed graphically with individual trajectories. The linear mixed model will be performed to identify predictors (e.g., sex) that are associated with the quantitative measures. Furthermore, the generalized estimating equations model with the logit link and binomial distribution will be used to identify predictors for qualitative measures (e.g., prol

Baseline and day 28 geometric mean titers (GMTs) will be calculated for each vaccine (i.e. hepatitis A or B and tetanus). GMTs for patients undergoing vaccination pre- and post-treatment will be performed. The difference in 28-day GMT between pre-treatment and post-treatment will be compared using the paired-t test. Analysis of covariance will be used to identify predictors that are associated with the change of 28-day difference in GMT. Seroconversion or a 4-fold rise in GMT from baseline to day-28 will be determined for pre- and post-treatment patient cohorts. Seroconversion proportion will

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Transmission Reduction and Prevention With HPV Vaccination (TRAP-HPV) Study	NCT01824537	Human Papilloma...	HPV vaccine, Ga... Hepatitis A vac...	18 Years - 45 Years	McGill University
Qualitative, Qualitative, and Functional Studies Over the First Year in Measuring Immune System Response During the First Year of Therapy in Patients With Brain Tumors	NCT02747407	Astrocytoma Glioma Oligodendroglio...	Hepatitis A Vac... Laboratory Biom... Tetanus Toxoid ... Trivalent Influ...	18 Years -	Wake Forest University Health Sciences

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