PALB2 and breast cancer: Rare mutations detected from the sequencing of exon 4 of PALB2 (n=7) and deleterious mutations that were reported to be recurrent in other Asian populations (Chinese PALB2 c.751 C>T and PALB2 c.1250_1251 delAAinsTCT) [13] were tested for in additional cohorts of breast cancer cases and controls by genotyping (Table 3).