Abstract:
:Little is known on whether melanocortin 1 receptor (MC1R) associated cutaneous melanoma (CM) risk varies depending on histological subtype and body site, and whether tumour thickness at diagnosis (the most important prognostic factor for CM patients) differs between MC1R variant carriers and wild-type individuals. We studied the association between MC1R variants and CM risk by histological subtype, body site, and Breslow thickness, using the database of the M-SKIP project. We pooled individual data from 15 case-control studies conducted during 2005-2015 in Europe and the USA. Study-specific, multi-adjusted odds ratios were pooled into summary odds ratios (SOR) and 95% confidence intervals (CI) using random-effects models. Six thousand eight hundred ninety-one CM cases and 5555 controls were included. CM risk was increased among MC1R variant carriers vs. wild-type individuals. The increase in risk was comparable across histological subtypes (SOR for any variant vs. wild-type ranged between 1.57 and 1.70, always statistical significant) except acral lentiginous melanoma (ALM), for which no association emerged; and slightly greater on chronically (1.74, 95% CI 1.47-2.07) than intermittently (1.55, 95% CI 1.34-1.78) sun-exposed skin. CM risk was greater for those carrying 'R' vs. 'r' variants; correlated with the number of variants; and was more evident among individuals not showing the red hair colour phenotype. Breslow thickness was not associated with MC1R status. MC1R variants were associated with an increased risk of CM of any histological subtype (except ALM) and occurring on both chronically and intermittently sun-exposed skin.
journal_name
Melanoma Resjournal_title
Melanoma researchauthors
Caini S,Gandini S,Botta F,Tagliabue E,Raimondi S,Nagore E,Zanna I,Maisonneuve P,Newton-Bishop J,Polsky D,Lazovich D,Kumar R,Kanetsky PA,Hoiom V,Ghiorzo P,Landi MT,Ribas G,Menin C,Stratigos AJ,Palmieri G,Guida G,doi
10.1097/CMR.0000000000000668subject
Has Abstractpub_date
2020-10-01 00:00:00pages
500-510issue
5eissn
0960-8931issn
1473-5636pii
00008390-202010000-00010journal_volume
30pub_type
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