PALB2 and breast cancer: Rare variants in the CDH1 promoter were related to the highest percentage of non-pathological complete response after neoadjuvant chemotherapy (P = .0273); MLH1 and PALB2 rare non-coding variants were found to be both related to bilateral BC (P = .0146 and P = .0005, respectively) and ATM promoter variants were associated with a positive family history (P = .041).