PALB2 and breast cancer: •→ Genetic testing should be available to all patients with a  personal history of BC.•→ Patients who had genetic testing previously may benefit  from updated testing for PALB2, genomic rearrangements  in BRCA1/2, and other potentially relevant genes, if not  performed already.•→ Genetic testing should be made available to patients  without a history of BC who meet NCCN Clinical Practice  Guidelines in Oncology (NCCN Guidelines®).