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Aims: To investigate the roles of MDR1 (1236C>T, 2677G>T/A, and 3435C>T) and OPRM1 (118A>G) gene polymorphisms on the anesthetic and adverse effects of propofol-remifentanil total intravenous anesthesia in pediatric surgery. Materials & methods: The genotypes were identified through Sanger sequencing. The clinical data including hemodynamics on anesthesia, postanesthesia pain and sedation score and the occurrence of adverse effects were recorded and compared against the genetic data. Results: A total of 72 pediatric patients undergoing surgery were recruited. A weak to no association was found between the genetic polymorphisms of MDR1 and OPRM1 and the anesthetic and adverse effects of propofol-remifentanil. Conclusion: Genetic polymorphisms in OPRM1, but not in MDR1, gene polymorphism, demonstrated plausible association with the effects of propofol-remifentanil.


Yee Liew, Francis R Capule, Raha Abdul Rahman, Nadia Md Nor, Rufinah Teo, Mohd Makmor-Bakry. Effects of MDR1 and OPRM1 genetic polymorphisms on the pharmacodynamics of propofol-remifentanil TIVA in pediatrics. Pharmacogenomics. 2023 Apr;24(5):247-259

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PMID: 36999508

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