The British journal of dermatology
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The melanocortin 1 receptor (MC1R) is a highly polymorphic G protein-coupled receptor. Inheritance of various MC1R alleles has been associated with a red hair/fair skin phenotype, increased incidence of skin cancer and altered sensitivity to ultraviolet (UV) radiation. ⋯ Our data demonstrate that MC1R genotype influences PUVA erythemal sensitivity in patients with psoriasis and other common skin diseases.