PMID- 34337835 OWN - NLM STAT- MEDLINE DCOM- 20220316 LR - 20230701 IS - 1365-2982 (Electronic) IS - 1350-1925 (Print) IS - 1350-1925 (Linking) VI - 34 IP - 1 DP - 2022 Jan TI - Pharmacogenomics fail to explain proton pump inhibitor refractory esophagitis in pediatric esophageal atresia. PG - e14217 LID - 10.1111/nmo.14217 [doi] AB - BACKGROUND: Esophagitis is prevalent in patients with esophageal dysmotility despite acid suppression, likely related to poor esophageal clearance. Esophageal atresia (EA) is a classic model of dysmotility where this observation holds true. In adult non-dysmotility populations, failure of esophagitis to respond to proton pump inhibitors (PPI) has been linked to variants in CYP2C19 that influence the activity of the encoded enzyme. It is unknown if CYP2C19 metabolizer phenotype contributes to PPI-refractory, non-allergic esophagitis in EA. METHODS: We performed a cross-sectional study of 314 children with (N = 188) and without (N = 126) EA who were on PPI therapy at the time of endoscopy to evaluate for possible gastroesophageal reflux disease. Patients with eosinophilic esophagitis and/or fundoplication were excluded. Clinical and histology data were collected. Genomic DNA from biopsy samples was genotyped for polymorphisms in CYP2C19. RESULTS: CYP2C19 metabolizer phenotypes were not associated with presence or severity of esophagitis (P = 0.994). In a multivariate logistic regression adjusted for potential confounders, EA was the strongest and only significant predictor of esophagitis (odds ratio 2.72, P = 0.023). Using negative binomial regression, we found that CYP2C19 phenotype was not a significant predictor of eosinophil count in children with PPI-refractory esophagitis. CONCLUSIONS: Patients with EA are significantly more likely to experience PPI-refractory, non-allergic esophagitis than controls regardless of CYP2C19 metabolizer phenotype, suggesting that factors other than CYP2C19 genetics, including dysmotility, are the primary drivers of esophagitis in EA. CYP2C19 genotype failed to predict PPI-refractory, non-allergic esophagitis in both EA and non-EA children. CI - (c) 2021 John Wiley & Sons Ltd. FAU - Yasuda, Jessica L AU - Yasuda JL AUID- ORCID: 0000-0002-4998-3322 AD - Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA, USA. FAU - Staffa, Steven J AU - Staffa SJ AD - Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Boston, MA, USA. FAU - Nurko, Samuel AU - Nurko S AUID- ORCID: 0000-0003-0936-4807 AD - Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA, USA. FAU - Kane, Madeline AU - Kane M AD - Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA, USA. FAU - Wall, Stephanie AU - Wall S AD - Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA, USA. FAU - Mougey, Edward B AU - Mougey EB AD - Center for Pharmacogenomics and Translational Research, Nemours Children's Health System, Jacksonville, FL, USA. FAU - Franciosi, James P AU - Franciosi JP AD - Division of Gastroenterology, Hepatology, and Nutrition, Nemours Children's Hospital, Orlando, FL, USA. AD - Department of Pediatrics, University of Central Florida College of Medicine, Orlando, FL, USA. FAU - Manfredi, Michael A AU - Manfredi MA AD - Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA, USA. FAU - Rosen, Rachel AU - Rosen R AUID- ORCID: 0000-0003-3949-3060 AD - Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA, USA. LA - eng GR - R01 DK097112/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20210801 PL - England TA - Neurogastroenterol Motil JT - Neurogastroenterology and motility JID - 9432572 RN - 0 (Proton Pump Inhibitors) RN - EC 1.14.14.1 (Cytochrome P-450 CYP2C19) SB - IM MH - Child, Preschool MH - Cross-Sectional Studies MH - Cytochrome P-450 CYP2C19/*genetics MH - Esophageal Atresia/complications/*drug therapy/genetics MH - Esophagitis/*drug therapy/etiology/genetics MH - Female MH - Genotype MH - Humans MH - Infant MH - Male MH - Pharmacogenetics MH - Proton Pump Inhibitors/*therapeutic use PMC - PMC10302247 MID - NIHMS1839029 OTO - NOTNLM OT - CYP2C19 OT - dysmotility OT - esophageal atresia OT - esophagitis OT - proton pump inhibitor metabolism EDAT- 2021/08/03 06:00 MHDA- 2022/03/17 06:00 PMCR- 2023/06/28 CRDT- 2021/08/02 06:31 PHST- 2021/06/01 00:00 [revised] PHST- 2020/12/22 00:00 [received] PHST- 2021/06/07 00:00 [accepted] PHST- 2021/08/03 06:00 [pubmed] PHST- 2022/03/17 06:00 [medline] PHST- 2021/08/02 06:31 [entrez] PHST- 2023/06/28 00:00 [pmc-release] AID - 10.1111/nmo.14217 [doi] PST - ppublish SO - Neurogastroenterol Motil. 2022 Jan;34(1):e14217. doi: 10.1111/nmo.14217. Epub 2021 Aug 1.