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A preliminary study on the link between PUVA and skin cancer
T Y Chuang1, J Tse, D J Cripps
1Dermatology Section, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin.
International Journal of Dermatology
|September 1, 1989
Summary
Psoriatic patients treated with 8-methoxypsoralen-ultraviolet light A (PUVA) did not show a significant increase in skin cancer risk. This long-term study compared observed skin cancer rates to expected rates in PUVA-treated individuals.
Area of Science:
- Dermatology
- Phototherapy Research
- Oncology
Background:
- Psoriasis is a chronic inflammatory skin condition.
- 8-methoxypsoralen-ultraviolet light A (PUVA) therapy has been used to treat psoriasis.
- Concerns exist regarding the long-term skin cancer risk associated with PUVA treatment.
Purpose of the Study:
- To investigate the incidence of skin cancer in patients treated with PUVA.
- To compare the observed skin cancer rates in PUVA-treated patients with expected rates.
- To determine if PUVA therapy is associated with a significant increase in skin cancer risk.
Main Methods:
- A cohort of 104 psoriatic patients treated with PUVA between 1975-1987 was retrospectively studied.
- Skin cancer occurrence during and after the therapeutic period was recorded.
- Statistical analysis compared observed skin cancer incidence to expected incidence based on general population data.
Main Results:
- The study investigated 104 psoriatic patients with a history of PUVA treatment.
- Observed skin cancer incidence was compared to expected incidence.
- No statistically significant increase in skin cancer was observed in the PUVA-treated group.
Conclusions:
- Long-term follow-up of psoriatic patients treated with 8-methoxypsoralen-ultraviolet light A (PUVA) did not reveal a significant increase in skin cancer.
- The findings suggest that PUVA therapy may not elevate skin cancer risk compared to the general population.
- Further research may be warranted to confirm these findings in larger cohorts.