Inherited BC risk is known to be associated with rare, highly penetrant variants, mainly single nucleotide polymorphisms (SNPs) and small insertions and deletions (indels) in BRCA1 and BRCA2, which account for nearly 20% of hereditary breast and/or ovarian cancer (HBOC) cases in Finland [1]–[3]. The gene discussed is BRCA1; the disease is ovarian cancer.