CHEK2 and ovarian cancer: A positive family history of breast cancer in this patient prompted genetic testing, analyzing genes associated with hereditary breast and ovarian cancer (BRCA1, BRCA2, ATM, CDH1, CHEK2, PALB2, TP53, STK11, PTEN, NF1, RAD51C, and RAD51D) using next-generation sequencing (NGS).