Extensive molecular screening of the BRCA1/2 (BRCA) genes by massively parallel sequencing (MPS) identified variants of uncertain (or unknown) significance (VUS) and novel variants. We performed a molecular characterization of a novel BRCA1 synonymous variant discovered in a family with hereditary ovarian cancer (HOC) syndrome. We showed that the BRCA1 c.5073 A > T variant might play a pathogenic role in HOC syndrome in this family.