In April 2020, Japan introduced insurance coverage for genetic counseling and testing only for women with a history of breast cancer who met specific criteria: diagnosis before age 45, TNBC before age 70, multiple breast cancers, a third-degree relative with breast, ovarian, or pancreatic cancer, a close relative with a BRCA1/2 mutation or male breast cancer, or a prior diagnosis of ovarian, fallopian tube, or peritoneal cancer. This evidence concerns the gene BRCA1 and breast cancer.