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Regardless of continuous research to develop effective chemotherapies and improve patient’s prognosis, cancer still remains one of the most deadly diseases worldwide. The reduction in the pace of successfully developing an effective anti-cancer drug is due to the rapid emergence of drug resistance exhibited by tumor cells. One of the resistance mechanisms which is least considered and somewhat overlooked is chemoresistance via drug metabolizing enzymes (DMEs). Therefore, this review emphasizes on pharmacokinetic resistance specifically the DMEs associated chemoresistance, in which drug molecule is rapidly metabolized by DMEs resulting in diminished potential of anti-cancer drugs. The current review will be covering DMEs that are associated with chemoresistance such as ALDH1A1, GST-π, DPD, CYP1B1 and so forth. Although several strategies have been developed to solve this problem such as …