Somatic loss of the remaining allele occurs approximately in half of CHEK2-driven breast cancers and is accompanied by a border-line increase of chromosomal instability. - Iyevleva AG; Aleksakhina SN; Sokolenko AP; Baskina SV; Venina AR; Anisimova EI; Bizin IV; Ivantsov AO; Belysheva YV; Chernyakova AP; Togo AV; Imyanitov EN (Breast cancer research and treatment, 2022)