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Risk factors for basal cell carcinoma in the UK: case-control study in 806 patients
1Department of Dermatology, North Staffordshire Hospital, Stoke-on-Trent, England.
Journal of the Royal Society of Medicine
|July 1, 1997
Summary
Genetically influenced traits like skin and eye color increase basal cell carcinoma (BCC) risk. Truncal tumors indicate a higher likelihood of developing multiple BCCs, suggesting genetic predisposition and UV exposure interplay.
Area of Science:
- Dermatology
- Oncology
- Genetic Epidemiology
Background:
- Basal cell carcinoma (BCC) is the most frequent malignant neoplasm among Caucasians.
- Understanding risk factors for BCC development and recurrence is crucial for prevention and management.
Purpose of the Study:
- To investigate the association between various phenotypic characteristics, social factors, and BCC risk.
- To identify predictors for the development of multiple BCCs compared to single BCCs.
Main Methods:
- A large UK case-control study utilizing conditional logistic regression.
- Age- and gender-matched data sets were analyzed for BCC cases versus controls (n=403).
- Patients with multiple BCCs were compared to those with single BCCs (n=278).
Main Results:
- Social class (OR 2.36, P=0.007), skin type 1, red/blonde hair, and blue/green eyes were significantly associated with increased BCC risk.
- A truncal tumor site at presentation was a strong predictor for developing multiple BCCs (OR 4.03, P=0.002).
- Genetically mediated differences in ultraviolet (UV) responsiveness play a role in BCC, albeit with a small effect size.
Conclusions:
- Genetic factors influencing UV sensitivity are important in BCC pathogenesis.
- The findings suggest potential for primary and secondary prevention strategies.
- Patients with truncal BCC may represent a susceptible group, indicating intermittent UV exposure in genetically predisposed individuals could contribute to a cancer syndrome.