Germline ATM variants predispose to melanoma: a joint analysis across the GenoMEL and MelaNostrum consortia.
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Dalmasso B, Pastorino L, Nathan V, Shah N N, Palmer J M, Howlie M, Johansson P A, Freedman N D, Carter B D, Beane-Freeman L, Hicks B, Molven A, Helgadottir H, Sankar A, Tsao H, Stratigos A J, Helsing P, Van Doorn R, Gruis N A, Visser M, Wadt K A W, Mann G, Holland E A, Nagore E, Potrony M, Puig S, Menin C, Peris K, Fargnoli M C, Calista D, Soufir N, Harland M, Bishop T, Kanetsky P A, Elder D E, Andreotti V, Vanni I, Bruno W, Höiom V, Tucker M A, Yang X R, Andresen P A, Adams D J, Landi M T, Hayward N K, Goldstein A M, Ghiorzo P, GenoMEL, MelaNostrum consortia
Аннотация
METHODS: From 22 American, Australian, and European sites, we collected 2,104 familial, multiple primary (MPM), and sporadic melanoma cases who underwent ATM genotyping via panel, exome, or genome sequencing, and compared the allele frequency (AF) of selected ATM variants classified as loss-of-function (LOF) and variants of uncertain significance (VUS) between this cohort and the gnomAD non-Finnish European (NFE) data set.
RESULTS: LOF variants were more represented in our study cohort than in gnomAD NFE, both in all (AF = 0.005 and 0.002, OR = 2.6, 95% CI = 1.56-4.11, p < 0.01), and familial + MPM cases (AF = 0.0054 and 0.002, OR = 2.97, p < 0.01). Similarly, VUS were enriched in all (AF = 0.046 and 0.033, OR = 1.41, 95% CI = 1.6-5.09, p < 0.01) and familial + MPM cases (AF = 0.053 and 0.033, OR = 1.63, p < 0.01). In a case-control comparison of two centers that provided 1,446 controls, LOF and VUS were enriched in familial + MPM cases (p = 0.027, p = 0.018).
CONCLUSION: This study, describing the largest multicenter melanoma cohort investigated for ATM germline variants, supports the role of ATM as a melanoma predisposition gene, with LOF variants suggesting a moderate-risk.