Photodynamic Therapy in Treating Patients With Skin Cancer
RATIONALE: Photodynamic therapy uses light and drugs that make cancer cells more sensitive to light to kill tumor cells. Photodynamic therapy using aminolevulinic acid cream may be effective in treating patients with skin cancer.
PURPOSE: This randomized phase II trial is studying how well photodynamic therapy works in treating patients with skin cancer.
Non-melanomatous Skin Cancer
Drug: aminolevulinic acid hydrochloride
Procedure: conventional surgery
|Study Design:||Allocation: Randomized
Primary Purpose: Treatment
|Official Title:||Cutaneous Absorption and Intralesional Penetration of Topical Amino-Levulinic Acid in Basal Cell Carcinoma and Squamous Cell Carcinoma as Measured by In Situ Fluorescence and Intensified Video Fluorescence Microscopy|
- Depth of penetration of aminolevulinic acid as measured by the accumulation of protoporphyrin IX [ Designated as safety issue: No ]
|Study Start Date:||November 1993|
|Study Completion Date:||June 2007|
|Primary Completion Date:||June 2007 (Final data collection date for primary outcome measure)|
- Characterize the penetration of topically applied aminolevulinic acid (ALA) into the lesions of patients with primary basal cell and squamous cell carcinomas.
- Quantitate the depth of fluorescence achievable with varying application periods of ALA in these patients.
- Compare the results of tissue fluorescence with surface fluorescence measurements in these patients.
OUTLINE: This is a randomized study. Patients are stratified according to lesion type (superficial basal cell carcinoma (BCC) vs nodular BCC vs squamous cell carcinoma). Patients within each group are randomized to receive one of two application times: 4-5 or 20-24 hours in duration.
Aminolevulinic acid is topically applied either in a cream mixture or an alcohol base and an occlusive dressing placed over the lesion. After the randomized treatment duration has expired, the dressing is removed and quantitative protoporphyrin IX fluorescence measurements from the tumor and surrounding skin are mapped using a fluorometer. Routine surgical excision is then performed on the carcinoma.
Patients return after one to two weeks for a follow-up examination and suture removal.
PROJECTED ACCRUAL: 54 patients will be accrued within 10 years.
|United States, New York|
|Roswell Park Cancer Institute|
|Buffalo, New York, United States, 14263-0001|
|Study Chair:||Allan R. Oseroff, MD, PhD||Roswell Park Cancer Institute|