A study of genetic variations in melanoma patients who had all their melanomas in visibly sun-damaged sites found that these people were more likely to have variants at MC1R rs75570604 (OR 2·5), 9q31.2 rs10816595 (OR 1·4), and MTAP rs869329 (OR 1·4), compared to people with melanomas on both sun-exposed and sun-protected sites. Here, MTAP is linked to melanoma.