PMID- 29227571 OWN - NLM STAT- MEDLINE DCOM- 20190111 LR - 20221207 IS - 1463-1326 (Electronic) IS - 1462-8902 (Linking) VI - 20 IP - 4 DP - 2018 Apr TI - Comparative effectiveness of metformin monotherapy in extended release and immediate release formulations for the treatment of type 2 diabetes in treatment-naive Chinese patients: Analysis of results from the CONSENT trial. PG - 1006-1013 LID - 10.1111/dom.13190 [doi] AB - AIMS: Metformin treatment for type 2 diabetes mellitus (T2DM) can be limited by gastrointestinal (GI) adverse events (AEs), resulting in treatment discontinuation. We investigated whether once-daily metformin extended release (XR) is superior in terms of GI tolerability, with non-inferior efficacy, compared with thrice-daily metformin immediate release (IR) in treatment-naive Chinese patients with T2DM. MATERIALS AND METHODS: This prospective, open-label, randomized, multicentre, phase IV interventional study enrolled Chinese T2DM patients to receive either metformin XR or metformin IR with a 2-week screening period, a 16-week treatment period and a 2-week follow-up period without treatment. Co-primary endpoints were a non-inferiority assessment of metformin XR vs metformin IR in glycated haemoglobin (HbA1c) least squares mean (LSM) change from baseline to week 16 and the superiority of GI tolerability for metformin XR vs metformin IR. RESULTS: Overall, 532 patients were randomized to metformin IR (n = 267) or metformin XR (n = 265). The HbA1c LSM change was -1.61% and -1.58% in each group, respectively (LSM difference, 0.03; 95% confidence interval [CI], -0.10, 0.17). Incidences of drug-related AEs were 26.5% (n = 66) in the metformin IR-only group and 32.2% (n = 85) in the metformin XR-only group, and GI AEs were 23.8% and 22.3% in each group, respectively (difference, -1.52; 95% CI, -8.60, 5.56). The treatment difference met the predefined non-inferiority upper CI margin of 0.4% in HbA1c. CONCLUSIONS: Metformin XR was non-inferior to metformin IR for the LSM change in HbA1c from baseline to week 16 and not superior to metformin IR for overall GI AE incidence during treatment of Chinese T2DM patients. CI - (c) 2017 John Wiley & Sons Ltd. FAU - Ji, Linong AU - Ji L AUID- ORCID: 0000-0003-1305-1598 AD - Department of Endocrinology, Peking University People's Hospital, Beijing, China. FAU - Liu, Jing AU - Liu J AD - Department of Endocrinology, Gansu Provincial Hospital, Gansu, China. FAU - Yang, Jing AU - Yang J AD - Department of Endocrinology, First Hospital of Shanxi Medical University, Shanxi, China. FAU - Li, Yufeng AU - Li Y AD - Department of Endocrinology, Beijing Pinggu Hospital, Beijing, China. FAU - Liang, Li AU - Liang L AD - Department of Endocrinology, The People's Hospital of Liaoning Province, Shenyang, China. FAU - Zhu, Dalong AU - Zhu D AD - Department of Endocrinology, Nanjing Drum Tower Hospital (the Affiliated Hospital of Nanjing University Medical School), Nanjing, China. FAU - Li, Quanmin AU - Li Q AD - Department of Endocrinology, General Hospital of the Rocket Forces of Chinese People's Liberation Army, Beijing, China. FAU - Ma, Tianrong AU - Ma T AUID- ORCID: 0000-0002-6835-4943 AD - Medical Affairs, Merck China Ltd, an affiliate of Merck KGaA, Darmstadt, Germany. FAU - Xu, Haiyan AU - Xu H AD - Medical Affairs, Merck China Ltd, an affiliate of Merck KGaA, Darmstadt, Germany. FAU - Yang, Yanlan AU - Yang Y AD - Department of Endocrinology, Shanxi Provincial People's Hospital, Shanxi, China. FAU - Zeng, Jiaoe AU - Zeng J AD - Department of Endocrinology, Jingzhou Central Hospital, Jingzhou, China. FAU - Feng, Bo AU - Feng B AD - Department of Endocrinology, Shanghai East Hospital Affiliated to Tongji University, Shanghai, China. FAU - Qu, Shen AU - Qu S AD - Department of Endocrinology, Shanghai Tenth People's Hospital (Tenth People's Hospital of Tongji University), Shanghai, China. FAU - Li, Yiming AU - Li Y AD - Department of Endocrinology, Huashan Hospital Affiliated to Fudan University, Shanghai, China. FAU - Ma, Lizhen AU - Ma L AD - Department of Endocrinology, Hangzhou First People's Hospital, Hangzhou, China. FAU - Lin, Shanshan AU - Lin S AD - Department of Endocrinology, Beijing Shijingshan Hospital, Beijing, China. FAU - Wang, Jianping AU - Wang J AD - Department of Endocrinology, The Second Hospital Affiliated to University of South China, Hengyang, China. FAU - Li, Wei AU - Li W AD - Department of Endocrinology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, China. FAU - Song, Weihong AU - Song W AD - Department of Endocrinology, Chenzhou No.1 People's Hospital, Chenzhou, China. FAU - Li, Xiaoxing AU - Li X AD - Department of Endocrinology, The Third Hospital of Changsha, Changsha, China. FAU - Luo, Yong AU - Luo Y AD - Department of Endocrinology, Chongqing Three Gorges Central Hospital, Chongqing, China. FAU - Xi, Shugang AU - Xi S AD - Department of Endocrinology, The First Hospital of Jilin University, Jilin, China. FAU - Lin, Mei AU - Lin M AD - Department of Endocrinology, Wuhan Puai Hospital, Wuhan, China. FAU - Liu, Yu AU - Liu Y AD - Department of Endocrinology, Sir Run Run Hospital Nanjing Medical University, Nanjing, China. FAU - Liang, Zerong AU - Liang Z AD - Department of Endocrinology, Chongqing Red Cross Hospital (People's Hospital of Jiangbei District), Chongqing, China. LA - eng PT - Clinical Trial, Phase IV PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20180122 PL - England TA - Diabetes Obes Metab JT - Diabetes, obesity & metabolism JID - 100883645 RN - 0 (Delayed-Action Preparations) RN - 9100L32L2N (Metformin) SB - IM MH - Adult MH - Aged MH - Asian People MH - China MH - Delayed-Action Preparations MH - Diabetes Mellitus, Type 2/blood/*drug therapy MH - Drug Compounding MH - Female MH - Humans MH - Male MH - Metformin/*administration & dosage/adverse effects MH - Middle Aged MH - Treatment Outcome OTO - NOTNLM OT - metformin OT - type 2 diabetes EDAT- 2017/12/12 06:00 MHDA- 2019/01/12 06:00 CRDT- 2017/12/12 06:00 PHST- 2017/09/25 00:00 [received] PHST- 2017/11/30 00:00 [revised] PHST- 2017/12/07 00:00 [accepted] PHST- 2017/12/12 06:00 [pubmed] PHST- 2019/01/12 06:00 [medline] PHST- 2017/12/12 06:00 [entrez] AID - 10.1111/dom.13190 [doi] PST - ppublish SO - Diabetes Obes Metab. 2018 Apr;20(4):1006-1013. doi: 10.1111/dom.13190. Epub 2018 Jan 22.