Premium
Predicted efficacy of a pharmacogenetic passport for inflammatory bowel disease
Author(s) -
Bangma Amber,
Voskuil Michiel D.,
Uniken Venema Werna T. C.,
Brugge Harm,
Hu Shixian,
Lanting Pauline,
Franke Lude,
Dijkstra Gerard,
Festen Eleonora A. M.,
Weersma Rinse K.
Publication year - 2020
Publication title -
alimentary pharmacology and therapeutics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.308
H-Index - 177
eISSN - 1365-2036
pISSN - 0269-2813
DOI - 10.1111/apt.15762
Subject(s) - thiopurine methyltransferase , pharmacogenetics , medicine , inflammatory bowel disease , adverse effect , efficacy , pharmacology , drug , disease , genotype , genetics , biology , gene
Summary Background High inter‐individual variability in therapeutic response to drugs used in the management of Inflammatory Bowel Disease (IBD) leads to high morbidity and high costs. Genetic variants predictive of thiopurine‐induced myelosuppression, thiopurine‐induced pancreatitis and immunogenicity of Tumour Necrosis Factor alpha (TNFα) antagonists have been identified, but uptake of pre‐treatment pharmacogenetic testing into clinical guidelines has been slow. Aim To explore the efficacy of a pharmacogenetic passport for IBD that includes multiple pharmacogenetic predictors of response. Methods Patients with IBD exposed to thiopurines and/or TNFα antagonists were retrospectively evaluated for the presence of thiopurine toxicity and/or immunogenicity of TNFα antagonists. All patients were genotyped using both whole‐exome sequencing and the Illumina Global Screening Array. An in‐house‐developed computational pipeline translated genetic data into an IBD pharmacogenetic passport that predicted risks for thiopurine toxicity and immunogenicity of TNFα antagonists per patient. Using pharmacogenetic‐guided treatment guidelines, we calculated clinical efficacy estimates for pharmacogenetic testing for IBD. Results Among 710 patients with IBD exposed to thiopurines and/or TNFα antagonists, 150 adverse drug responses occurred and our pharmacogenetic passport would have predicted 54 (36%) of these. Using a pharmacogenetic passport for IBD that includes genetic variants predictive of thiopurine‐induced myelosuppression, thiopurine‐induced pancreatitis, and immunogenicity of TNFα antagonists, 24 patients need to be genotyped to prevent one of these adverse drug responses. Conclusions This study highlights the clinical efficacy of a pharmacogenetic passport for IBD. Implementation of such a pharmacogenetic passport into clinical management of IBD may contribute to a reduction in adverse drug responses.