Also, small cell carcinoma of the ovary of hypercalcemic type shows similarities with juvenile granulosa cell tumors (young patients, brisk mitotic activity, pseudo-follicles) and should be ruled out by performing EMA and BRG1 immunostainings, the latter being a very good surrogate for SMARCA4 alteration [148]. The gene discussed is SMARCA4; the disease is granulosa cell tumor.