PMID- 29500217 OWN - NLM STAT- MEDLINE DCOM- 20180906 LR - 20190202 IS - 2044-6055 (Electronic) IS - 2044-6055 (Linking) VI - 8 IP - 3 DP - 2018 Mar 2 TI - CoMET: a protocol for a randomised controlled trial of co-commencement of METformin as an adjunctive treatment to attenuate weight gain and metabolic syndrome in patients with schizophrenia newly commenced on clozapine. PG - e021000 LID - 10.1136/bmjopen-2017-021000 [doi] LID - e021000 AB - INTRODUCTION: Clozapine, while effective in treatment refractory schizophrenia, is associated with significant weight gain, heart disease and increased risk of type 2 diabetes mellitus (T2DM). Although there is evidence for weight loss with metformin for people with obesity who are already taking clozapine, there have been no published trials that have investigated the effect of metformin in attenuating weight gain at the time of clozapine initiation. METHODS AND ANALYSIS: A 24-week double-blind placebo-controlled trial of concomitant prescription of metformin at clozapine commencement. Eighty-six people being commenced on clozapine will be randomised to placebo or metformin (variable dose, up to 2 g/day). The primary outcome is comparative end point body weight, between the placebo and metformin groups. Secondary outcomes are comparative rates of conversion to T2DM, alteration of metabolic syndrome parameters, proportion gaining >5% body weight and changes in diet and appetite. We will additionally examine biomarkers associated with change in weight among trial participants. ETHICS AND DISSEMINATION: Ethics approval was granted by the Metro South Human Research Ethics Committee HREC/17/QPAH/538-SSA/17/QPAH/565. We plan to submit a manuscript of the results to a peer-reviewed journal, and present results at conferences, consumer forums and hospital grand rounds. TRIAL REGISTRATION NUMBER: ACTRN12617001547336; Pre-results. CI - (c) Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted. FAU - Siskind, Dan AU - Siskind D AUID- ORCID: 0000-0002-2072-9216 AD - University of Queensland School of Medicine, Brisbane, Queensland, Australia. AD - Metro South Addiction and Mental Health Service, Brisbane, Queensland, Australia. AD - Queensland Centre for Mental Health Research, Brisbane, Queensland, Australia. FAU - Friend, Nadia AU - Friend N AD - Sunshine Coast Health and Hospital Service, Brisbane, Queensland, Australia. FAU - Russell, Anthony AU - Russell A AD - University of Queensland School of Medicine, Brisbane, Queensland, Australia. AD - Department of Endocrinology, Princess Alexandra Hospital, Brisbane, Queensland, Australia. FAU - McGrath, John J AU - McGrath JJ AD - Queensland Centre for Mental Health Research, Brisbane, Queensland, Australia. AD - Queensland Brain Institute, University of Queensland, St Lucia, Queensland, Australia. AD - National Centre for Register-Based Research, Aarhus University, Aarhus, Denmark. FAU - Lim, Carmen AU - Lim C AD - Queensland Centre for Mental Health Research, Brisbane, Queensland, Australia. FAU - Patterson, Sue AU - Patterson S AD - Metro North Mental Health Service, Brisbane, Queensland, Australia. FAU - Flaws, Dylan AU - Flaws D AD - University of Queensland School of Medicine, Brisbane, Queensland, Australia. AD - Metro North Mental Health Service, Brisbane, Queensland, Australia. FAU - Stedman, Terry AU - Stedman T AD - West Moreton Health and Hospital Service, Brisbane, Queensland, Australia. FAU - Moudgil, Vikas AU - Moudgil V AD - University of Queensland School of Medicine, Brisbane, Queensland, Australia. AD - Metro North Mental Health Service, Brisbane, Queensland, Australia. FAU - Sardinha, Savio AU - Sardinha S AD - Gold Coast Health and Hospital Service, Gold Coast, Queensland, Australia. FAU - Suetani, Shuichi AU - Suetani S AD - University of Queensland School of Medicine, Brisbane, Queensland, Australia. AD - Metro South Addiction and Mental Health Service, Brisbane, Queensland, Australia. AD - Queensland Centre for Mental Health Research, Brisbane, Queensland, Australia. FAU - Kisely, Steve AU - Kisely S AD - University of Queensland School of Medicine, Brisbane, Queensland, Australia. AD - Metro South Addiction and Mental Health Service, Brisbane, Queensland, Australia. FAU - Winckel, Karl AU - Winckel K AD - Pharmacy Department, Princess Alexandra Hospital, Brisbane, Queensland, Australia. AD - University of Queensland School of Pharmacy, Brisbane, Queensland, Australia. FAU - Baker, Andrea AU - Baker A AD - Queensland Centre for Mental Health Research, Brisbane, Queensland, Australia. LA - eng SI - ANZCTR/ACTRN12617001547336 PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20180302 PL - England TA - BMJ Open JT - BMJ open JID - 101552874 RN - 0 (Antipsychotic Agents) RN - 0 (Hypoglycemic Agents) RN - 9100L32L2N (Metformin) RN - J60AR2IKIC (Clozapine) SB - IM MH - Antipsychotic Agents/adverse effects/therapeutic use MH - Body Mass Index MH - Body Weight/drug effects MH - Clozapine/*adverse effects/therapeutic use MH - Diabetes Mellitus, Type 2/prevention & control MH - Double-Blind Method MH - Female MH - Humans MH - Hypoglycemic Agents/pharmacology/*therapeutic use MH - Male MH - Metabolic Syndrome/*prevention & control MH - Metformin/pharmacology/*therapeutic use MH - Obesity/chemically induced/*prevention & control MH - Research Design MH - Schizophrenia/*drug therapy MH - Secondary Prevention MH - Treatment Outcome MH - Weight Gain/*drug effects MH - Weight Loss PMC - PMC5855211 OTO - NOTNLM OT - clozapine OT - diabetes OT - metabolic syndrome OT - obesity OT - schizophrenia COIS- Competing interests: AR has received speaker honoraria and travel grants from AstraZeneca, Boehringer Ingelheim, Eli Lilly, MSD, Novo Nordisk and Sanofi and has participated on advisory panels for MSD and Novo Nordisk. EDAT- 2018/03/04 06:00 MHDA- 2018/09/07 06:00 PMCR- 2018/03/02 CRDT- 2018/03/04 06:00 PHST- 2018/03/04 06:00 [entrez] PHST- 2018/03/04 06:00 [pubmed] PHST- 2018/09/07 06:00 [medline] PHST- 2018/03/02 00:00 [pmc-release] AID - bmjopen-2017-021000 [pii] AID - 10.1136/bmjopen-2017-021000 [doi] PST - epublish SO - BMJ Open. 2018 Mar 2;8(3):e021000. doi: 10.1136/bmjopen-2017-021000.