Glibenclamide and metfoRmin versus stAndard care in gEstational diabeteS (GRACES): a feasibility open label randomised trial

Reynolds, R. M. et al. (2017) Glibenclamide and metfoRmin versus stAndard care in gEstational diabeteS (GRACES): a feasibility open label randomised trial. BMC Pregnancy and Childbirth, 17, 316. (doi: 10.1186/s12884-017-1505-3) (PMID:28938877) (PMCID:PMC5610470)

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Background: Metformin is widely used to treat gestational diabetes (GDM), but many women remain hyperglycaemic and require additional therapy. We aimed to determine recruitment rate and participant throughput in a randomised trial of glibenclamide compared with standard therapy insulin (added to maximum tolerated metformin) for treatment of GDM. Methods: We conducted an open label feasibility study in 5 UK antenatal clinics among pregnant women 16 to 36 weeks’ gestation with metformin-treated GDM. Women failing to achieve adequate glycaemic control on metformin monotherapy were randomised to additional glibenclamide or insulin. The primary outcome was recruitment rate. We explored feasibility with uptake, retention, adherence, safety, glycaemic control, participant satisfaction and clinical outcomes. Results: Records of 197 women were screened and 23 women randomised to metformin and glibenclamide (n = 13) or metformin and insulin (n = 10). Mean (SD) recruitment rate was 0.39 (0.62) women/centre/month. 9/13 (69.2%, 95%CI 38.6–90.9%) women adhered to glibenclamide and all provided outcome data (100% retention). There were no episodes of severe hypoglycaemia, but metformin and insulin gave superior glycaemic control to metformin and glibenclamide, with fewer blood glucose readings <3.5 mmol/l (median [IQR] difference/woman/week of treatment 0.58 [0.03–1.87]). Conclusions: A large randomised controlled trial comparing glibenclamide or insulin in combination with metformin for women with GDM would be feasible but is unlikely to be worthwhile, given the poorer glycaemic control with glibenclamide and metformin in this pilot study. The combination of metformin and glibenclamide should be reserved for women with GDM with true needle phobia or inability to use insulin therapy. Trial registration: registration number:NCT02080377 February 11th 2014.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Lindsay, Dr Robert
Authors: Reynolds, R. M., Denison, F. C., Juszczak, E., Bell, J. L., Penneycard, J., Strachan, M. W.J., Lindsay, R. S., Alexander, C. I., Love, C. D.B., Whyte, S., Mackenzie, F., Stenson, B., and Norman, J. E.
College/School:College of Medical Veterinary and Life Sciences > School of Cardiovascular & Metabolic Health
Journal Name:BMC Pregnancy and Childbirth
Publisher:BioMed Central
ISSN (Online):1471-2393
Copyright Holders:Copyright © 2017 The Authors
First Published:First published in BMC Pregnancy and Childbirth 17: 316
Publisher Policy:Reproduced under a Creative Commons license

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
646292Glibenclamide and metfoRmin versus stAndard Care in gEstational diabeteS (GRACES) - a feasibility open label randomised trialRobert LindsayOffice of the Chief Scientist (CSO)CZH/4/1011RI CARDIOVASCULAR & MEDICAL SCIENCES