TY - JOUR AR - CROGR-2020-3-104 TI - Palbociclib and Exemestane are Active in Pretreated Low-Grade Serous Ovarian Cancer AU - Gesa , Isensee AU - Beat , Thürlimann JO - Case Reports in Obstetrics Gynecology and Reproductive PY - 2020 DA - Thu 31, Dec 2020 SN - 2674-5070 DO - http://dx.doi.org/10.31487/j.CROGR.2020.03.04 UR - https://www.sciencerepository.org/palbociclib-and-exemestane-are-active-in-pretreated-low-grade-serous_CROGR-2020-3-104 KW - Low-grade serous ovarian cancer, CDK4/6-inhibitor, c-MYC amplification, RAS-mutation AB - We describe a case of a 55-year-old woman with a rare metastatic micropapillary low-grade serous ovarian cancer who had been heavily pretreated. A KRAS-mutation and c-MYC-amplification were detected, and we initiated a therapy with the CDK4/6- inhibitor Palbociclib in combination with the steroidal aromatase inhibitor exemestane. We postulated that the combination therapy leads to a blocking of the c-MYCamplification-activated cell cycle, proliferation, and inhibition of apoptosis, further enhanced by other oncogenes like mutated RAS. This therapy showed a good and lasting response representing a new opportunity for therapy in heavily pretreated metastatic micropapillary low-grade serous ovarian cancer.