# Determine the Efficacy of Topical Tretinoin Cream for the Prevention of Nonmelanoma Skin Cancer

> **NCT00007631** · PHASE3 · COMPLETED · sponsor: **US Department of Veterans Affairs** · enrollment: 1131 (actual)

## Conditions studied

- Carcinoma, Basal Cell
- Carcinoma, Squamous Cell
- Skin Neoplasms

## Interventions

- **DRUG:** Tretinoin 0.1% cream or placebo
- **OTHER:** Placebo

## Key facts

- **NCT ID:** NCT00007631
- **Lead sponsor:** US Department of Veterans Affairs
- **Sponsor class:** FED
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 1998-03
- **Primary completion:** 2004-11
- **Final completion:** 2006-07
- **Target enrollment:** 1131 (ACTUAL)
- **Last updated:** 2009-01-30

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00007631

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00007631, "Determine the Efficacy of Topical Tretinoin Cream for the Prevention of Nonmelanoma Skin Cancer". Retrieved via AI Analytics 2026-06-23 from https://api.ai-analytics.org/clinical/NCT00007631. Licensed CC0.

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