IL10 and skin basal cell carcinoma: When the number of IL10 GC haplotypes was treated as a continuous variable, there was a significant 20% increase in risk of both BCC and SCC associated with each additional GC haplotype (BCC: ORBCC = 1.2, 95% CI 1.1–1.4; SCC: ORSCC = 1.2, 95% CI 1.0–1.4), although again this association was of borderline significance in SCC.