Genetic polymorphism in ATG16L1 gene influences the response to adalimumab in Crohn's disease patients

Author:

Koder Silvo1,Repnik Katja23,Ferkolj Ivan4,Pernat Cvetka1,Skok Pavel12,Weersma Rinse K5,Potočnik Uroš23

Affiliation:

1. University Medical Centre Maribor, Ljubljanska 5, Maribor, Slovenia

2. Center for Human Molecular Genetics & Pharmacogenomics, Faculty of Medicine, University of Maribor, Taborska 8, Maribor, Slovenia

3. Faculty for Chemistry & Chemical Engineering, University of Maribor, Smetanova 17, Maribor, Slovenia

4. Department of Gastroenterology, Division of Internal Medicine, University Medical Centre Ljubljana, Japljeva 2, Ljubljana, Slovenia

5. Department of Gastroenterology & Hepatology, University of Groningen & University Medical Center Groningen, Groningen, The Netherlands

Abstract

Aim: To see if SNPs could help predict response to biological therapy using adalimumab (ADA) in Crohn's disease (CD). Materials & methods: IBDQ index and CRP levels were used to monitor therapy response. We genotyped 31 CD-associated genes in 102 Slovenian CD patients. Results: The strongest association for treatment response defined as decrease in CRP levels was found for ATG16L1 SNP rs10210302. Additional SNPs in 7 out of 31 tested CD-associated genes (PTGER4, CASP9, IL27, C11orf30, CCNY, IL13, NR1I2) showed suggestive association with ADA response. Conclusion: Our results suggest ADA response in CD patients is genetically predisposed by SNPs in CD risk genes and suggest ATG16L1 as most promising candidate gene for drug response in ADA treatment. Original submitted 24 September 2014; Revision submitted 1 December 2014

Publisher

Future Medicine Ltd

Subject

Pharmacology,Genetics,Molecular Medicine

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