# An Extended Follow-Up Study of the HPV Vaccine Delayed Booster Trial

> **NCT04688476** · — · ACTIVE_NOT_RECRUITING · sponsor: **University of Arizona** · enrollment: 113 (actual)

## Conditions studied

- HPV-associated Cancer

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT04688476
- **Lead sponsor:** University of Arizona
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2020-11-17
- **Primary completion:** 2025-09-09
- **Final completion:** 2025-12
- **Target enrollment:** 113 (ACTUAL)
- **Last updated:** 2025-10-16

## Collaborators

- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04688476

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04688476, "An Extended Follow-Up Study of the HPV Vaccine Delayed Booster Trial". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT04688476. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*