It is likely that at least two of the three cases of purported adult-type granulosa cell tumor lacking an FOXL2 mutation were misdiagnosed and were not granulosa cell tumors, based on a review of the tumor's immunophenotypes, while the thecomas showing the FOXL2 mutation did have minor granulosa cell components, on retrospective review of the cases. The gene discussed is FOXL2; the disease is neoplasm.