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Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, U.S. Gov't, P.H.S.
High daily dose and being a substrate of cytochrome P450 enzymes are two important predictors of drug-induced liver injury.
Drug-induced liver injury (DILI) is complicated and difficult to predict. It has been observed that drugs with extensive hepatic metabolism have a higher likelihood of causing DILI. Cytochrome P450 (P450) enzymes are primarily involved in hepatic metabolism. Identifying the associations of DILI with drugs that are P450 substrates, inhibitors, or inducers will be extremely helpful to clinicians during the decision-making process of caring for a patient suspected of having DILI. We collected metabolism data on P450 enzymes for 254 orally administered drugs in the Liver Toxicity Knowledge Base Benchmark Dataset with a known daily dose, and applied logistic regression to identify these associations. We revealed that drugs that are substrates of P450 enzymes have a higher likelihood of causing DILI [odds ratio (OR), 3.99; 95% confidence interval (95% CI), 2.07-7.67; P < 0.0001], which is dose-independent, and drugs that are P450 inhibitors have a higher likelihood of generating DILI only when they are administered at high daily doses (OR, 6.03; 95% CI, 1.32-27.5; P = 0.0098). However, drugs that are P450 inducers are not observed to be associated with DILI (OR, 1.55; 95% CI, 0.65-3.68; P = 0.3246). Our findings will be useful in identifying the suspected medication as a cause of liver injury in clinical settings.
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