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Retinoids in prevention of skin cancer.

Abstract
Two chemoprevention randomized clinical trials were begun in 1984 to evaluate retinoids in the prevention of skin cancers. Moderate risk subjects with a history of at least 10 actinic keratoses and at most two prior skin cancers were enrolled in the SKICAP-AK trial and randomized to 25,000 IU retinol or placebo daily for 5 years. High risk subjects with a history of at least four prior skin cancers were enrolled in the SKICAP-S/B trial and randomized to receive 25,000 IU retinol, 5-10 mg isotretinoin or placebo daily for 3 years. Data from the SKICAP-AK trial indicate that retinol reduces incidence of first new squamous cell skin cancers but had no effect on the incidence of first new basal cell skin cancer. The effect of retinoids had no significant benefit on squamous or basal cell skin cancers in the high risk subjects on the SKICAP-S/B trial, although intervention duration was less than planned. Daily retinol was effective in preventing squamous cell cancers in moderate risk subjects.
AuthorsT E Moon, N Levine, B Cartmel, J L Bangert
JournalCancer letters (Cancer Lett) Vol. 114 Issue 1-2 Pg. 203-5 (Mar 19 1997) ISSN: 0304-3835 [Print] IRELAND
PMID9103292 (Publication Type: Clinical Trial, Journal Article, Randomized Controlled Trial, Research Support, U.S. Gov't, P.H.S.)
Chemical References
  • Anticarcinogenic Agents
  • Retinoids
  • Vitamin A
  • retinol palmitate
Topics
  • Aged
  • Anticarcinogenic Agents (blood)
  • Carcinoma, Basal Cell (prevention & control)
  • Carcinoma, Squamous Cell (prevention & control)
  • Female
  • Humans
  • Male
  • Middle Aged
  • Nevus (pathology)
  • Retinoids (adverse effects, therapeutic use)
  • Skin Neoplasms (prevention & control)
  • Vitamin A (analogs & derivatives, blood)

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