PMID- 27217051 OWN - NLM STAT- MEDLINE DCOM- 20180521 LR - 20220330 IS - 1473-1150 (Electronic) IS - 1470-269X (Linking) VI - 17 IP - 5 DP - 2017 Oct TI - Clinical-pharmacogenetic predictive models for MTX discontinuation due to adverse events in rheumatoid arthritis. PG - 412-418 LID - 10.1038/tpj.2016.36 [doi] AB - We describe a novel approach to investigate and evaluate combined effect of a large number of clinical and pharmacogenetic factors on treatment outcome. We have used this approach to investigate predictors of methotrexate (MTX)-induced adverse events (AEs) leading to treatment discontinuation in rheumatoid arthritis (RA) patients. In total, 333 RA patients were genotyped for 34 polymorphisms in MTX transporters, folate and adenosine pathways. The effect of clinical and pharmacogenetic factors was assessed with penalized regression in the cause-specific Cox proportional hazards model. The predictive capacity was evaluated with the area under time-dependent receiver operating characteristic curve where cross-validation was applied. SLC19A1, ABCG2, ADORA3 and TYMS were associated with discontinuation because of AEs in clinical-pharmacogenetic model. Cross-validation showed that both clinical-pharmacogenetic model and nongenetic model had worthless predictive ability for MTX discontinuation because of AEs. These models could be further improved, either with additional polymorphisms or with epigenetic predictors. FAU - Jenko, B AU - Jenko B AD - Pharmacogenetics Laboratory, Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia. FAU - Lusa, L AU - Lusa L AD - Faculty of Medicine, Institute for Biostatistics and Medical Informatics, University of Ljubljana, Ljubljana, Slovenia. FAU - Tomsic, M AU - Tomsic M AD - Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia. AD - Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia. FAU - Praprotnik, S AU - Praprotnik S AD - Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia. AD - Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia. FAU - Dolzan, V AU - Dolzan V AD - Pharmacogenetics Laboratory, Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia. LA - eng PT - Journal Article DEP - 20160524 PL - United States TA - Pharmacogenomics J JT - The pharmacogenomics journal JID - 101083949 RN - 0 (ABCG2 protein, human) RN - 0 (ATP Binding Cassette Transporter, Subfamily G, Member 2) RN - 0 (Antirheumatic Agents) RN - 0 (Neoplasm Proteins) RN - 0 (Nucleoside Transport Proteins) RN - 0 (Reduced Folate Carrier Protein) RN - 0 (SLC19A1 protein, human) RN - 0 (adenosine transporter) RN - EC 2.1.1.45 (TYMS protein, human) RN - EC 2.1.1.45 (Thymidylate Synthase) RN - YL5FZ2Y5U1 (Methotrexate) SB - IM MH - ATP Binding Cassette Transporter, Subfamily G, Member 2/genetics MH - Aged MH - Antirheumatic Agents/*adverse effects/*pharmacokinetics/therapeutic use MH - Arthritis, Rheumatoid/*drug therapy/genetics MH - Female MH - Genotype MH - Humans MH - Male MH - Methotrexate/*adverse effects/*pharmacokinetics/therapeutic use MH - Middle Aged MH - Neoplasm Proteins/genetics MH - Nucleoside Transport Proteins/genetics MH - Pharmacogenomic Testing MH - *Polymorphism, Genetic MH - Predictive Value of Tests MH - Proportional Hazards Models MH - Reduced Folate Carrier Protein/genetics MH - Thymidylate Synthase/genetics MH - Treatment Outcome EDAT- 2016/05/25 06:00 MHDA- 2018/05/22 06:00 CRDT- 2016/05/25 06:00 PHST- 2015/11/03 00:00 [received] PHST- 2016/02/04 00:00 [revised] PHST- 2016/04/15 00:00 [accepted] PHST- 2016/05/25 06:00 [pubmed] PHST- 2018/05/22 06:00 [medline] PHST- 2016/05/25 06:00 [entrez] AID - tpj201636 [pii] AID - 10.1038/tpj.2016.36 [doi] PST - ppublish SO - Pharmacogenomics J. 2017 Oct;17(5):412-418. doi: 10.1038/tpj.2016.36. Epub 2016 May 24.