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oai:repisalud.isciii.es:20.500.12105/65852024-11-30T00:25:01Zcom_20.500.12105_2173com_20.500.12105_2051col_20.500.12105_19597

00925njm 22002777a 4500 dc Mur, Pilar author De Voer, Richarda M author Olivera-Salguero, Rubén author Rodriguez Perales, Sandra author Pons, Tirso author Setién, Fernando author Aiza, Gemma author Valdés-Mas, Rafael author Bertini, Angelo author Pineda, Marta author Vreede, Lilian author Navarro, Matilde author Iglesias, Silvia author González, Sara author Brunet, Joan author Valencia, Alfonso author Esteller, Manel author Lázaro, Conxi author Kops, Geert J P L author Urioste, Miguel author Puente, Xose S author Capellá, Gabriel author Valle, Laura author 2018 Germline mutations in BUB1 and BUB3 have been reported to increase the risk of developing colorectal cancer (CRC) at young age, in presence of variegated aneuploidy and reminiscent dysmorphic traits of mosaic variegated aneuploidy syndrome. We performed a mutational analysis of BUB1 and BUB3 in 456 uncharacterized mismatch repair-proficient hereditary non-polyposis CRC families and 88 polyposis cases. Four novel or rare germline variants, one splice-site and three missense, were identified in four families. Neither variegated aneuploidy nor dysmorphic traits were observed in carriers. Evident functional effects in the heterozygous form were observed for c.1965-1G>A, but not for c.2296G>A (p.E766K), in spite of the positive co-segregation in the family. BUB1 c.2473C>T (p.P825S) and BUB3 c.77C>T (p.T26I) remained as variants of uncertain significance. As of today, the rarity of functionally relevant mutations identified in familial and/or early onset series does not support the inclusion of BUB1 and BUB3 testing in routine genetic diagnostics of familial CRC. Mol Cancer. 2018; 17 (1) : 23. 1476-4598 http://hdl.handle.net/20.500.12105/6585 29448935 10.1186/s12943-018-0762-8 1476-4598 Molecular cancer Colorectal cancer predisposition Hereditary colorectal cancer High-penetrance genes Mechanism Variegated aneuploidy Germline mutations in the spindle assembly checkpoint genes BUB1 and BUB3 are infrequent in familial colorectal cancer and polyposis