Brief Title
Extended Follow Up of Young Women in Costa Rica Who Received Vaccine for Human Papillomavirus Types 16 and 18 and Unvaccinated Controls
Official Title
Extended Follow-Up of Young Women in Costa Rica Who Received Vaccination Against Human Papillomavirus Types 16 and 18 and Unvaccinated Controls
Brief Summary
This research trial studies extended follow up of young women in Costa Rica who received vaccine for human papillomavirus types 16 and 18 and unvaccinated controls. Collecting information from young women in Costa Rica who have received vaccine for human papillomavirus types 16 and 18 and a new group of unvaccinated controls enrolled for the follow-up period, may help doctors learn more about the risks and benefits of prophylactic human papillomavirus vaccine.
Detailed Description
PRIMARY OBJECTIVES: I. To evaluate the 10-year global impact of human papillomavirus (HPV)-16/18 vaccination of young adult women. II. To evaluate determinants of the immune response to HPV and the vaccine, and markers of long-term protection. III. To evaluate the natural history of HPV and cervical disease in vaccinated and unvaccinated populations. OUTLINE: Participants undergo long term follow-up comprising risk factor questionnaire, pelvic examination for all sexually experienced women, and specimen collection at years 6, 8, and 10.
Study Type
Observational
Primary Outcome
Cumulative rate of cervical intraepithelial neoplasia 3 (CIN3)
Condition
Anal Carcinoma
Intervention
Cytology Specimen Collection Procedure
Study Arms / Comparison Groups
Observational (long term follow-up)
Description: Participants undergo long term follow-up comprising risk factor questionnaire, pelvic examination for all sexually experienced women, and specimen collection at years 6, 8, and 10.
Publications
* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline.
Recruitment Information
Recruitment Status
Other
Estimated Enrollment
8670
Start Date
March 30, 2009
Completion Date
December 31, 2023
Primary Completion Date
December 31, 2023
Eligibility Criteria
Inclusion Criteria: - Women who participated in the Costa Rica Vaccine Trial (CVT) and lived in the Guanacaste province and a few areas of Puntarenas closest to Guanacaste will be eligible for the long-term follow up LTFU study - Women who received the HPV-16/18 vaccine at the start of CVT will be invited for up to 6 years of additional follow-up, and women who were originally in the control arm of CVT and were offered the HPV-16/18 vaccine at crossover will be invited for an additional 2 years of follow-up - A subset of the control arm women who are in the crossover immunogenicity subcohort will be followed the full 6 years - Some women who received HPV vaccination and were not invited into the LTFU protocol (stopped attending their screening visits during CVT, discontinued their study participation during CVT or lived outside the study area) will be invited to participate in the LTFU protocol, particularly those who received an incomplete vaccination schedule - UNVACCINATED CONTROL GROUP: - Born in or between July 1978 and November 1987 - Residents of Guanacaste Province and a few areas of Puntarenas closest to Guanacaste at some point during 2005 - Able to speak/understand Spanish - Apparently mentally competent - Written informed consent obtained prior to enrollment Exclusion Criteria: - History of cervical cancer - History of hysterectomy - Any important medical condition or other criteria that the investigator considers that precludes enrollment - Vaccination with Gardasil or Cervarix will be an exclusionary criterion, but few women are expected to have received these vaccines at the time of enrollment; use of these vaccines after enrollment is not a criterion for study interruption but we plan to collect information on vaccination history so that the few women who report having been vaccinated with one of the HPV vaccines after enrollment can be evaluated separately at analysis
Gender
Female
Ages
N/A - N/A
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Contacts
Aimee Kreimer, ,
Location Countries
Costa Rica
Location Countries
Costa Rica
Administrative Informations
NCT ID
NCT00867464
Organization ID
NCI-2016-00231
Secondary IDs
NCI-2016-00231
Responsible Party
Sponsor
Study Sponsor
National Cancer Institute (NCI)
Study Sponsor
Aimee Kreimer, Principal Investigator, National Cancer Institute (NCI)
Verification Date
November 2022