Methylenetetrahydrofolate Reductase C677T (rs1801133) Polymorphism and Pemetrexed Treatment Outcome in Patients with Non–Small-Cell Lung Cancer
Article Type:
Research/Original Article (بدون رتبه معتبر)
Lung cancer is the first cause of cancer deaths in the world. Pemetrexed is an antifolate drug used as a first or second-line in the treatment of advanced non-small cell lung cancer (NSCLC) patients. Methylenetetrahydrofolate reductase (MTHFR) is an important enzyme in a folic acid metabolic pathway and a central role in clinical response to pemetrexed. The aim of this study was to investigate the association between rs1801133 polymorphism and the overall survival of metastatic NSCLC patients.  
Thirty-four patients with metastatic lung cancer were treated with pemetrexed-based regimen at Rasoul Akram Hospital, Tehran, Iran. Genomic DNA was extracted from the peripheral blood of patients before initiation of treatment. Genotyping of rs1801133 polymorphism was performed at the National Institute of Genetic Engineering by PCR-RFLP methods. Statistical analysis performed with SPSS software, version 21.0. 
Thirty-four patients were enrolled in this study. 21 patients (62%) were male and 13 (38%) were female. The mean age of the patients was 58.90 years. rs1801133 polymorphism were not significantly associated with survival in patients treated with pemetrexed-based chemotherapy. 
Previous studies have demonstrated that MTHFR polymorphism may predict survival among pemetrexed-based regimen treated advanced non-squamous NSCLC patients. However, in this study, the examined polymorphisms were not associated with patients' survival.
Personalized Medicine Journal, Volume:6 Issue: 23, Autumn 2021
5 to 9  
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