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About
RATIONALE: Photodynamic therapy uses light and drugs that make cancer cells more sensitive to light to kill tumor cells. This may be effective treatment for skin cancer and cancer that is metastatic to the skin.
PURPOSE: Phase I trial to study the effectiveness of photodynamic therapy in treating patients who have either squamous cell or basal cell carcinoma of the skin or solid tumors metastatic to the skin.
Full description
OBJECTIVES:
OUTLINE: This is a dose-escalation study.
Patients receive silicon phthalocyanine 4 (Pc 4) IV over 2 hours on day 1 followed by light therapy over 30-60 minutes on day 2. Treatment repeats in 6 weeks for a total of 2 courses in the absence of disease progression or unacceptable toxicity.
Cohorts of 3-6 patients receive escalating doses of Pc 4 and a fixed dose of light until the maximum tolerated dose (MTD) of Pc 4 is determined. The MTD is defined as the dose preceding that at which 2 of 6 patients experience dose-limiting toxicity. Once the MTD for Pc 4 is determined, additional patients are treated with a fixed dose of Pc 4 (2 dose levels below the MTD) and escalating doses of light until the MTD is determined. The MTD of light is defined as above.
Patients are followed at 6 weeks (or 8 weeks if treated lesion on lower extremity has not healed) and then every 3 months thereafter.
PROJECTED ACCRUAL: A total of 25-30 patients will be accrued for this study annually.
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Inclusion and exclusion criteria
DISEASE CHARACTERISTICS:
Histologically confirmed tumor for which no potential curative therapy exists (e.g., surgery, radiotherapy, or systemic chemotherapy)
The following tumor types are eligible:
Cutaneous nodular metastatic breast carcinoma lesion with loco-regional cutaneous, soft tissue, or chest wall involvement
Cutaneous or superficial subcutaneous nodular metastatic head and neck lesion
Cutaneous nodular Kaposi's sarcoma lesion
Stage IA-IIB or IVA cutaneous T-cell lymphoma (CTCL)
Squamous cell or basal cell carcinoma of the skin that is not eligible for standard therapy (e.g., cryosurgery, radiotherapy, electrodesiccation and curettage, or excision)
Cutaneous and subcutaneous metastasis from any solid tumor (e.g., thoracic, gastrointestinal, or genitourinary cancers or sarcomas)
Bidimensionally measurable disease
No single area greater than 36 cm^2 may be treated (maximum of 25 cm^2 tumor mass with a 1 cm margin)
Tumor treatable by surface (non-contact) light illumination
Skin type I-III
No tumors of the eyelids
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Data sourced from clinicaltrials.gov
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