“…Breast cancer remains a significant problem for global health as it is one of the most common cause of tumorrelated death world-wide (Fouz et al, 2013;Engin et al, 2013;Sedighi et al, 2013;Zhu et al, 2013;Wu et al , 2014;Cabuk et al, 2014;Chin et al, 2014;Fouladi et al, 2014;Majeed et al, 2014;Gogia et al, 2014;Liu et al, 2014;Louisa et al, 2014;Moazzezy et al, 2014;Niu et al, 2014;Rizalar et al, 2014;Sipetic-Grujicic et al, 2014;Prajoko et al, 2014;Inanc et al, 2014;Varol et al, 2014;Yadav et al, 2014). Pemetrexed is a novel multitargeted antifolate that inhibits several enzymes in the de novo pathways of pyrimidine and purine biosynthesis, including thymidylate synthase, dihydrofolate reductase, and glycinamide ribonucleotide ormyltransferase.…”