PMID- 35272420 OWN - NLM STAT- MEDLINE DCOM- 20220915 LR - 20220923 IS - 2363-8915 (Electronic) IS - 2363-8915 (Linking) VI - 37 IP - 3 DP - 2022 Sep 1 TI - MTHFR c.665C>T guided fluoropyrimidine therapy in cancer: gender-dependent effect on dose requirements. PG - 323-327 LID - 10.1515/dmpt-2021-0219 [doi] AB - OBJECTIVES: The fluoropyrimidine derivatives 5-Fluorouracil and Capecitabine are widely used for the treatment of solid tumors. Fluoropyrimidine metabolism involves a cascade of different enzymes, including MTHFR enzyme. MTHFR c.665C>T polymorphism, leading to decreased MTHFR activity, is a potential pharmacogenomic marker for fluoropyrimidine drug response. The aim of the present study was to analyze the association of MTHFR c.665C>T polymorphism with fluoropyrimidine response in terms of therapy induced adverse events (AEs), requirement of dose reduction and delayed drug administration or therapy discontinuation. METHODS: The study group consisted of 313 fluoropyrimidine-treated cancer patients. PCR-RFLP was used to analyze MTHFR c.665C>T polymorphism. RESULTS: In female patients, MTHFR c.665 CT and TT genotypes were associated with dose reduction (p=0.029). In gender stratification, regression analysis adjusted for age of disease onset, body surface area and AE incidence, showed that MTHFR CT and TT genotypes increased both need for fluoropyrimidine dose reduction (OR 5.050, 95% CI 1.346-18.948, p=0.016) and percentage of dose reduction (beta=3.318, 95% C.I. 1.056-5.580, p=0.004) in female patients. Such differences were not present in male patients. No other associations were found. CONCLUSIONS: MTHFR c.665C>T polymorphism was associated with fluoropyrimidine dose reduction in female cancer patients. This gender*MTHFR interaction merits further investigation. CI - (c) 2022 Charalampia Ioannou et al., published by De Gruyter, Berlin/Boston. FAU - Ioannou, Charalampia AU - Ioannou C AD - Laboratory of Pharmacology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece. AD - Individualised Medicine & Pharmacological Research Solutions Center (IMPReS), Alexandroupolis, Greece. FAU - Ragia, Georgia AU - Ragia G AD - Laboratory of Pharmacology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece. AD - Individualised Medicine & Pharmacological Research Solutions Center (IMPReS), Alexandroupolis, Greece. FAU - Balgkouranidou, Ioanna AU - Balgkouranidou I AD - Department of Medical Oncology, University General Hospital of Alexandroupolis, Medical School, Democritus University of Thrace, Alexandroupolis, Greece. FAU - Xenidis, Nikolaos AU - Xenidis N AD - Department of Medical Oncology, University General Hospital of Alexandroupolis, Medical School, Democritus University of Thrace, Alexandroupolis, Greece. FAU - Amarantidis, Kyriakos AU - Amarantidis K AD - Department of Medical Oncology, University General Hospital of Alexandroupolis, Medical School, Democritus University of Thrace, Alexandroupolis, Greece. FAU - Koukaki, Triantafyllia AU - Koukaki T AD - Department of Medical Oncology, University General Hospital of Alexandroupolis, Medical School, Democritus University of Thrace, Alexandroupolis, Greece. FAU - Biziota, Eirini AU - Biziota E AD - Department of Medical Oncology, University General Hospital of Alexandroupolis, Medical School, Democritus University of Thrace, Alexandroupolis, Greece. FAU - Kakolyris, Stylianos AU - Kakolyris S AD - Department of Medical Oncology, University General Hospital of Alexandroupolis, Medical School, Democritus University of Thrace, Alexandroupolis, Greece. FAU - Manolopoulos, Vangelis G AU - Manolopoulos VG AD - Laboratory of Pharmacology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece. AD - Individualised Medicine & Pharmacological Research Solutions Center (IMPReS), Alexandroupolis, Greece. AD - Clinical Pharmacology Unit, Academic General Hospital of Alexandroupolis, Alexandroupolis, Greece. LA - eng PT - Journal Article DEP - 20220311 PL - Germany TA - Drug Metab Pers Ther JT - Drug metabolism and personalized therapy JID - 101653409 RN - 0 (Antimetabolites, Antineoplastic) RN - 6804DJ8Z9U (Capecitabine) RN - EC 1.5.1.20 (MTHFR protein, human) RN - EC 1.5.1.20 (Methylenetetrahydrofolate Reductase (NADPH2)) RN - U3P01618RT (Fluorouracil) SB - IM MH - *Antimetabolites, Antineoplastic/therapeutic use MH - Capecitabine/therapeutic use MH - Female MH - Fluorouracil/therapeutic use MH - Humans MH - Male MH - *Methylenetetrahydrofolate Reductase (NADPH2)/genetics MH - *Neoplasms/drug therapy/genetics MH - Pharmacogenetics MH - Polymorphism, Restriction Fragment Length OTO - NOTNLM OT - MTHFR OT - TYMS OT - chemotherapy response OT - fluoropyrimidine OT - gender interaction EDAT- 2022/03/11 06:00 MHDA- 2022/09/16 06:00 CRDT- 2022/03/10 20:18 PHST- 2021/11/19 00:00 [received] PHST- 2022/02/08 00:00 [accepted] PHST- 2022/03/11 06:00 [pubmed] PHST- 2022/09/16 06:00 [medline] PHST- 2022/03/10 20:18 [entrez] AID - dmdi-2021-0219 [pii] AID - 10.1515/dmpt-2021-0219 [doi] PST - epublish SO - Drug Metab Pers Ther. 2022 Mar 11;37(3):323-327. doi: 10.1515/dmpt-2021-0219. eCollection 2022 Sep 1.