Photodynamic Therapy Using Methyl-5-Aminolevulinate Hydrochloride Cream in Determining Pain Threshold in Patients With Skin Cancer

PRIMARY OBJECTIVES: I. To determine the "low" initial irradiance that causes no or minimal (pain grade of < 4) during the time period during which 90 +/- 10% photo bleaching of protoporphyrin IX (PplX) in the lesion occurs, and which precedes the "high" irradiance portion of MAL/PDT. II. To determine the effects of preceding "low" irradiance on the pain level of the "high" irradiance portion of MAL-PDT. SECONDARY OBJECTIVES: I. To determine the effects of irradiance on lesion perfusion. II. To determine PpIX and Total Vit D content in blood. TERTIARY OBJECTIVES: I. To monitor the clinical outcomes of the treatments for initial response and recurrences. OUTLINE: Patients are randomized to 1 of 2 treatment arms. GROUP I: Patients apply methyl-5-aminolevulinate hydrochloride (MAL) cream on the lesions and the surrounding normal skin. Beginning 3 hours later, patients undergo laser light treatment for 3-5 minutes. GROUP II: Patients apply MAL cream on the lesions and the surrounding normal skin. Beginning 3 hours later, patients undergo light-emitting diode treatment for 10-20 minutes. After completion of study treatment, patients are followed up at 5-7 days, at 6-12 months, and at 24 months.

Inclusion criteria

• Patients with 1-2 superficial basal cell carcinoma (sBCC), 0.5 to 2 cm in diameter
• Primary or recurrent lesions may be treated
• Diagnosis must be confirmed by biopsy, at least 2 weeks pre treatment
• Each patient with < 8 lesions can contribute a maximum of 2 lesions per treatment session, 1 lesion per light source, which can be treated the same day as permitted by scheduling; the remaining lesions may be treated as soon as scheduling permits with non protocol Photodynamic Therapy
• Patient or legal representative must understand the investigational nature of this study and sign an Independent Ethics Committee/Institutional Review Board approved written informed consent form prior to receiving any study related procedure

Exclusion criteria

• Patients not meeting the above selection criteria
• Lesions which are not suitable for diagnostic measurements
• Patients with >= 8 lesions to be treated
• Carcinomas of types known to have uncertain clinical margins (e.g. morpheaform or infiltrating), or any lesion felt to require Mohs surgery for definitive control
• Lesions over boney prominences
• Patients with porphyrias or known hypersensitivity to porphyrins
• Patients with known photosensitivity diseases
• Patients with allergies to Metvixia (MAL) cream ingredients (peanut and almond oil)
• Patients previously treated with a systemic photo sensitizer within 4 months
• Pregnant or nursing female patients
• Patients unwilling or unable to follow protocol requirements
• Any condition which in the Investigator's opinion deems the patient an unsuitable candidate to receive study drug