T4N5 Liposome Lotion Compared With Placebo Lotion for Preventing Actinic Keratoses in Patients With Xeroderma Pigmentosum

RATIONALE: Patients with xeroderma pigmentosum are more likely to develop skin lesions in sun-affected areas. These skin lesions, such as actinic keratoses, can develop into skin cancer. T4N5 liposome lotion may reduce actinic keratoses or other sun-induced skin damage in patients with xeroderma pigmentosum. PURPOSE: Randomized double-blinded phase III trial to compare treatment using T4N5 liposome lotion with treatment using placebo in reducing actinic keratoses and other sun-induced skin damage in patients with xeroderma pigmentosum.