4.7 Article

Mitomycin C in Homologous Recombination Deficient Metastatic Pancreatic Cancer after Disease Progression on Platinum-Based Chemotherapy and Olaparib

Journal

BIOMEDICINES
Volume 10, Issue 11, Pages -

Publisher

MDPI
DOI: 10.3390/biomedicines10112705

Keywords

pancreatic cancer; BRCA; Olaparib; homologous recombination deficient; mitomycin

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Recent research has shown promising results in personalizing treatment for metastatic pancreatic cancer with platinum-based chemotherapy and PARP inhibitors in patients with homologous recombination deficiency (HRD). However, new strategies are needed to overcome resistance. This study documents the cases of HRD pancreatic cancer patients treated with Mitomycin C (MMC), showing positive outcomes and manageable toxicities.
Recent efforts to personalize treatment with platinum-based chemotherapy and PARP inhibitors have produced promising results in homologous recombinant deficient (HRD) metastatic pancreatic cancer (MPC). However, new strategies are necessary to overcome resistance. The below case series documents patients treated at the HonorHealth Research Institute with a diagnosis of HRD MPC who received Mitomycin C (MMC) treatment from January 2013 until July 2018. Five HRD MPC patients treated with MMC were evaluated. All patients received at least one course of treatment. Mean age at MMC treatment initiation was 58 years. There were 3 females and 2 males. All patients had tumors that progressed on platinum-based chemotherapy, four patients had previous exposure to Olaparib. The median PFS was 10.1 months, and the median OS was 12.3 months. Responses were observed only in patients harboring BRCA2 mutations, no response was observed in the PALB2 mutation carrier. MMC in this heavily previously treated PC was safe, with overall manageable grade 2 gastrointestinal toxicities including nausea and vomiting, and G3 hematological toxicities including anemia and thrombocytopenia. Pancreatic cancer patients with HRD may benefit from MMC treatment. Further clinical investigation of MMC in pancreatic cancer is warranted.

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