PMID- 30549211 OWN - NLM STAT- MEDLINE DCOM- 20190628 LR - 20190628 IS - 1742-7843 (Electronic) IS - 1742-7835 (Linking) VI - 124 IP - 4 DP - 2019 Apr TI - Pharmacogenetics and prediction of adverse events in prescription opioid use disorder patients. PG - 439-448 LID - 10.1111/bcpt.13155 [doi] AB - The threats involved in the long-term opioid treatment of chronic non-cancer pain (CNCP) have increased notably. Strategies to identify at-risk patients are important because there is no clear evidence showing which screening or deprescription programmes are appropriate. Our aim was to evaluate the evidence provided by pharmacogenetics applied to predict an analgesic toxicity profile in prescription opioid use disorder (POUD) patients participating in an opioid deprescription programme. Pharmacogenetic markers were analysed in an observational, prospective deprescription programme for POUD patients (n = 88) treated for CNCP. It consisted of monitoring visits (baseline, follow-up and final), opioid rotation or discontinuation and the recording of adverse events and suspected adverse drug reactions (ADRs). Variants in OPRM1 (A118G), ABCB1 (C3435T), COMT (G472A), OPRD1 (T921C) and ARRB2 (C8622T) genes were tested by real-time PCR. Ethics committee approved the study. Wild-type OPRM1-AA genotype carriers reported a significantly higher number of adverse events than OPRM1-AG/GG (median [p25-75], 7 [5-11] vs 5 [3-9]), particularly gastrointestinal system events (90% vs 63%) such as nausea (33% vs 0%). Suspected ADRs (affecting 17% of the patients) were three times higher in males than in females (30% vs 11%). The deprescription programme was effective and safe, and it achieved a significant progressive reduction in the morphine equivalent daily dose, strong opioids and other analgesics' use, without causing any changes in pain intensity or opiate abstinence syndrome. OPRM1 gene polymorphisms could identify the risk of gastrointestinal adverse events in POUD patients. Deprescription programmes including pharmacogenetic analysis should be considered during the follow-up of this population. CI - (c) 2018 Nordic Association for the Publication of BCPT (former Nordic Pharmacological Society). FAU - Muriel, Javier AU - Muriel J AD - Neuropharmacology on Pain (NED), Alicante Institute for Health and Biomedical Research (ISABIAL-FISABIO Foundation), Alicante, Spain. AD - Occupational Observatory, Miguel Hernandez University of Elche, Elche, Spain. FAU - Margarit, Cesar AU - Margarit C AD - Neuropharmacology on Pain (NED), Alicante Institute for Health and Biomedical Research (ISABIAL-FISABIO Foundation), Alicante, Spain. AD - Pain Unit, Department of Health of Alicante-General Hospital, Alicante, Spain. FAU - Barrachina, Jordi AU - Barrachina J AD - Occupational Observatory, Miguel Hernandez University of Elche, Elche, Spain. FAU - Ballester, Pura AU - Ballester P AD - Neuropharmacology on Pain (NED), Alicante Institute for Health and Biomedical Research (ISABIAL-FISABIO Foundation), Alicante, Spain. AD - Occupational Observatory, Miguel Hernandez University of Elche, Elche, Spain. FAU - Flor, Andrea AU - Flor A AD - Pain Unit, Department of Health of Alicante-General Hospital, Alicante, Spain. FAU - Morales, Domingo AU - Morales D AD - Operations Research Centre, Miguel Hernandez University of Elche, Elche, Spain. FAU - Horga, Jose F AU - Horga JF AD - Clinical Pharmacology Unit, Department of Health of Alicante-General Hospital, Alicante, Spain. FAU - Fernandez, Eduardo AU - Fernandez E AD - Biomedical Neuroengineering Research Group (nBio), Systems Engineering and Automation Department of Miguel Hernandez University, Elche, Spain. FAU - Peiro, Ana M AU - Peiro AM AD - Neuropharmacology on Pain (NED), Alicante Institute for Health and Biomedical Research (ISABIAL-FISABIO Foundation), Alicante, Spain. AD - Pain Unit, Department of Health of Alicante-General Hospital, Alicante, Spain. AD - Clinical Pharmacology Unit, Department of Health of Alicante-General Hospital, Alicante, Spain. LA - eng PT - Journal Article PT - Observational Study DEP - 20181213 PL - England TA - Basic Clin Pharmacol Toxicol JT - Basic & clinical pharmacology & toxicology JID - 101208422 RN - 0 (Analgesics, Opioid) RN - 0 (OPRM1 protein, human) RN - 0 (Receptors, Opioid, mu) SB - IM MH - Analgesics, Opioid/*administration & dosage/adverse effects MH - *Deprescriptions MH - Female MH - Genotype MH - Humans MH - Male MH - Middle Aged MH - Opioid-Related Disorders/*epidemiology/genetics MH - *Pharmacogenetics MH - Prospective Studies MH - Receptors, Opioid, mu/genetics MH - Sex Factors OTO - NOTNLM OT - adverse events OT - chronic pain OT - opioid use disorder OT - pharmacogenetics OT - prescription opioids EDAT- 2018/12/15 06:00 MHDA- 2019/06/30 06:00 CRDT- 2018/12/15 06:00 PHST- 2018/08/15 00:00 [received] PHST- 2018/10/11 00:00 [accepted] PHST- 2018/12/15 06:00 [pubmed] PHST- 2019/06/30 06:00 [medline] PHST- 2018/12/15 06:00 [entrez] AID - 10.1111/bcpt.13155 [doi] PST - ppublish SO - Basic Clin Pharmacol Toxicol. 2019 Apr;124(4):439-448. doi: 10.1111/bcpt.13155. Epub 2018 Dec 13.