Difluoromethylornithine (DFMO) Chemoprevention of Skin Cancer in Organ Transplant Recipients
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This is a double blind, placebo controlled study of 52 patients who are at least one-year post-solid organ transplant. Subjects will receive either 12 months of DFMO or a placebo. The specific aims are to determine if DFMO at 500 mg daily will be well tolerated for 12 months and not affect organ transplant viability; will inhibit 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced ornithine decarboxylase (ODC) in skin biopsies by approximately 50% for the 12 months of therapy; and will be able to decrease polyamine levels in skin biopsies for the 12 months of treatment.
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Ages Eligible for Study:
21 Years and older (Adult, Older Adult)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
>1 year post-solid organ transplant of kidney, liver, pancreas, pancreas/kidney
Adequate organ function
Hearing age/gender appropriate
At high risk for developing skin cancer
Immunosuppressant levels and doses show stable graft function
Use of concomitant Retin-A, Efudex, Accutane or psoralen and ultraviolet light A (PUVA)
Systemic therapy for cancer treatment or prophylaxis
Use of concomitant azathioprine, antiseizure medications, non-steroidal anti-inflammatory drugs [NSAIDs] (other than cardioprotective doses of aspirin)