PMID- 36322453 OWN - NLM STAT- MEDLINE DCOM- 20230712 LR - 20230718 IS - 1539-2031 (Electronic) IS - 0192-0790 (Linking) VI - 57 IP - 7 DP - 2023 Aug 1 TI - Role of Pharmacogenomics in the Efficacy and Safety of Thiopurines in Inflammatory Bowel Disease: A Systematic Review and Meta-analysis. PG - 671-685 LID - 10.1097/MCG.0000000000001791 [doi] AB - BACKGROUND: Thiopurines' toxicity often leads to dose reduction or discontinuation. This systematic review aims to synthesize the evidence on the effect of genotype-based dosing of thiopurines on treatment efficacy and safety in inflammatory bowel disease (objective #1), and the association between genotype status and the efficacy and safety profile (objective #2). METHODS: The Cochrane Library, MEDLINE, and EMBASE were searched in August 2021. A total of 80 studies (19,859 individuals) were included. Meta-analyses for mortality, different types of adverse events (AEs), withdrawal due to AE, change in disease activity and clinical remission were performed following mainly a fixed-effects model. PROSPERO registration: CRD42020148130. RESULTS: Genotype-based dosing was associated to a significantly lower incidence of hematologic AEs (risk ratio=0.71; 95% CI: 0.56-0.90; I2 : 47%; 4 randomized controlled trials; moderate quality), which may be attributable to nudix hydrolase 15 (NUDT15) testing more than to thiopurine methyltransferase (TPMT) genotyping. No differences were found in other outcomes. Mutations in TPMT and NUDT15 genes were associated to a higher probability of serious AEs [odds ratio (OR) TPMT=4.98; OR NUDT15=11.44], hematologic AEs (OR TPMT=3.18), and serious hematologic AEs (OR TPMT=7.88; OR NUDT15=12.83). TPMT was also associated with a higher risk of withdrawals due to AEs (OR=3.38), and NUDT15 with gastrointestinal AEs (OR=2.04). Mutations in the ITPA gene did not lead to significant differences. Evidence of an association between other genes and clinical outcomes is still scarce. CONCLUSIONS: Mutations in TPMT and NUDT15 genes predispose patients to suffer thiopurine-induced toxicity, and genotype-guided treatment has been shown to contribute to the prevention of thiopurine-induced toxicity, especially in the case of NUDT15 in Asians. CI - Copyright (c) 2022 Wolters Kluwer Health, Inc. All rights reserved. FAU - Gutierrez-Valencia, Marta AU - Gutierrez-Valencia M AUID- ORCID: 0000-0002-3229-6614 AD - Unit of Innovation and Organization, Navarre Health Service. AD - Navarre Institute for Health Research (IdiSNA). FAU - Leache, Leire AU - Leache L AD - Unit of Innovation and Organization, Navarre Health Service. AD - Navarre Institute for Health Research (IdiSNA). FAU - Saiz, Luis Carlos AU - Saiz LC AD - Unit of Innovation and Organization, Navarre Health Service. AD - Navarre Institute for Health Research (IdiSNA). FAU - Beloqui, Juan J AU - Beloqui JJ AD - Navarre Institute for Health Research (IdiSNA). AD - Pharmacy Service, Navarra University Hospital, Navarre Health Service. AD - Genomic Medicine Unit, Navarrabiomed. FAU - Barajas, Miguel AU - Barajas M AD - Biochemistry Area, Department of Health Science, Public University of Navarre. FAU - Vicuna, Miren AU - Vicuna M AD - Inflammatory Bowel Disease Unit, Gastroenterology Department, Navarra University Hospital, Navarre Health Service, Pamplona, Navarre, Spain. FAU - Erviti, Juan AU - Erviti J AD - Unit of Innovation and Organization, Navarre Health Service. AD - Navarre Institute for Health Research (IdiSNA). LA - eng PT - Journal Article PT - Meta-Analysis PT - Systematic Review DEP - 20230801 PL - United States TA - J Clin Gastroenterol JT - Journal of clinical gastroenterology JID - 7910017 RN - EC 2.1.1.- (Methyltransferases) RN - EC 3.6.1.- (Pyrophosphatases) RN - MRK240IY2L (Azathioprine) SB - IM MH - Humans MH - *Pharmacogenetics MH - *Inflammatory Bowel Diseases/drug therapy/genetics MH - Genotype MH - Methyltransferases/genetics/therapeutic use MH - Pyrophosphatases/genetics/therapeutic use MH - Azathioprine/adverse effects EDAT- 2022/11/03 06:00 MHDA- 2023/07/12 06:42 CRDT- 2022/11/02 12:53 PHST- 2023/07/12 06:42 [medline] PHST- 2022/11/03 06:00 [pubmed] PHST- 2022/11/02 12:53 [entrez] AID - 00004836-990000000-00089 [pii] AID - 10.1097/MCG.0000000000001791 [doi] PST - epublish SO - J Clin Gastroenterol. 2023 Aug 1;57(7):671-685. doi: 10.1097/MCG.0000000000001791.