SMARCA4 and ovarian small cell carcinoma: In addition to the ten selected OC predisposition genes, germline PVs causing a loss of SMARCA4 gene function predispose for the rare small cell carcinoma of the ovary, hypercalcemic type (SCCOHT), primarily affecting females under 40 years with an average age of onset of 24–30 years.5, 6, 7