A Biomarker Evaluation Trial of UAB30 in Renal Transplant Recipients at High Risk for Non-melanoma Skin Cancer

This is a randomized, double-blind, placebo-controlled biomarker study in renal transplant recipients with actinic damage and a history of basal cell carcinomas and/or cutaneous squamous cell carcinomas. There will be two arms to the study: 1) daily oral UAB30 for 28 days; and 2) daily oral placebo for 28 days. The total duration of the study is anticipated to be 5 years. The hypothesis being tested is that a significantly greater percentage of subjects randomized to oral UAB30 over a period of 28 days will achieve ≥30% reduction in biomarkers of proliferation and ≥30% increase in apoptosis biomarkers than those who receive placebo. Cyclin D1 will serve as the primary biomarker. This investigation will determine whether subjects randomized to UAB30 have an increase in all trans-retinoic acid responsive genes in the skin compared to those receiving placebo. This will include an examination of target effects of UAB30 by evaluating its effects in vivo in humans on the DNA damage response and Src signaling pathways.