# Extended Follow Up of Young Women in Costa Rica Who Received Vaccine for Human Papillomavirus Types 16 and 18 and Unvaccinated Controls

> **NCT00867464** · — · ACTIVE_NOT_RECRUITING · sponsor: **National Cancer Institute (NCI)** · enrollment: 8670 (estimated)

## Conditions studied

- Anal Carcinoma
- Cervical Carcinoma
- Human Papillomavirus Infection
- Human Papillomavirus-Related Cervical Carcinoma
- Oral Cavity Carcinoma

## Interventions

- **OTHER:** Cytology Specimen Collection Procedure
- **OTHER:** Laboratory Biomarker Analysis
- **OTHER:** Long-term Follow-up
- **OTHER:** Questionnaire Administration

## Key facts

- **NCT ID:** NCT00867464
- **Lead sponsor:** National Cancer Institute (NCI)
- **Sponsor class:** NIH
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2009-03-30
- **Primary completion:** 2026-04-30
- **Final completion:** 2026-04-30
- **Target enrollment:** 8670 (ESTIMATED)
- **Last updated:** 2026-03-03


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00867464

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00867464, "Extended Follow Up of Young Women in Costa Rica Who Received Vaccine for Human Papillomavirus Types 16 and 18 and Unvaccinated Controls". Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/clinical/NCT00867464. Licensed CC0.

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