CClinicalTrials.gg
CompletedNCT02080377GRACESUpdated Dec 8, 2016

A Feasibility Study Looking at the Use of Glibenclamide and metfoRmin Versus stAndard Care in gEstational diabeteS

A Phase 3 interventional study of Glibenclamide and Insulin in Pregnancy and Gestational Diabetes, sponsored by University of Edinburgh. Completed at 5 sites in United Kingdom. Open to female participants aged 16 Years to 50 Years. Per ClinicalTrials.gov, last updated 2016-12-08.

Sponsored by University of Edinburgh · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
23
Allocation
Randomized
Ages
16 Years to 50 Years
Sex
Female
01

Study summary

The aim of this open label feasibility study is to determine recruitment rates to a randomised trial of glibenclamide compared with insulin (both in addition to maximum tolerated metformin) for the treatment of Gestational Diabetes Mellitus (GDM). This feasibility trial will inform the design of a future substantive multicentre trial to test the hypothesis that combination therapy with glibenclamide and metformin could reduce the number of pregnant women with GDM who require insulin and would be superior to metformin and insulin in terms of acceptability and cost effectiveness.

Women with GDM who have "failed" monotherapy with metformin will be recruited and randomised to either receive glibenclamide (test arm) or standard care with insulin, both in addition to their maximum tolerated dose of metformin. Patients will be recruited from three of the antenatal clinics.

This is a feasibility study in preparation for a large multicentre randomised trial to test the hypothesis that the addition of glibenclamide to metformin (combination therapy) could reduce the number of pregnant women with gestational diabetes mellitus requiring insulin, without compromising glycaemic control or other clinical outcomes. The investigators hypothesise that combination therapy with metformin and glibenclamide is likely to be preferable to metformin and insulin in terms of acceptability and cost.

02

Conditions studied

  • Pregnancy
  • Gestational Diabetes

Keywords

  • Pregnancy
  • Gestational diabetes
  • Glycaemic control
  • Metformin
03

In context

Diabetes, Gestational

842 studies on the registry are indexed under Diabetes, Gestational; 198 are open to participants now.

This study's enrollment of 23 is below the median of 110 across 550 interventional studies indexed under Diabetes, Gestational.

Browse Diabetes, Gestational studies →

Lead sponsor

University of Edinburgh is the lead sponsor of 393 studies on the registry; 64 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
16 Years to 50 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Pregnant women diagnosed with gestational diabetes who fail to achieve "adequate glycaemic control" on maximum tolerated dose metformin
  • Inadequate glycaemic control is defined according to the SIGN 116 guidelines.

Exclusion criteria

Exclusion Criteria:

  • Pregnant women requiring insulin prior to 20 weeks gestation or after 36 weeks gestation.
  • Pregnant women not taking at least 500mg metformin daily.
  • Patients with suspected Type 1 diabetes mellitus presenting in pregnancy.
  • Women with allergies to either glibenclamide or insulin or any of their excipients.
  • Women with any contraindications to sulfonylurea therapy.
  • Women unable to give informed consent.
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
23 participants (actual)

Study arms

  • Active comparator
    Current Standard Care

    Insulin + Metformin

    Drug: Insulin

  • Active comparator
    Treatment

    Glibenclamide + Metformin

    Drug: Glibenclamide

Interventions

  • DrugGlibenclamide
  • DrugInsulin
06

What researchers measure

Primary outcomes

  1. Number of women willing to be randomised

    * Retention - proportion of women randomised who remain in the study to provide outcomes * Adherence - proportion of clinicians who adhere to the treatment regimen(s)

    Time frame: 2 years

Secondary outcomes

  1. Glycaemic control

    Safety - number of hypoglycaemic episodes needing treatment, any other adverse events

    Time frame: 2 weekly

  2. Patient satisfaction

    assessed by visual analogue scale

    Time frame: 36-38 weeks gestation

  3. Clinical outcomes

    Change in maternal weight between booking and 36 weeks

    Time frame: 36 weeks

  4. Clinical outcome

    Mode and gestation of delivery.

    Time frame: 40 weeks

  5. Clinical Outcome

    Birthweight centile (adjusted for sex and gestation at birth)

    Time frame: 40 weeks

  6. Clinical Outcome

    Incidence of neonatal hypoglycaemia (defined as any of the following: blood glucose \<2.6 mmol/l) in first 48hrs age, or given intravenous glucose or any other drug to increase blood glucose)

    Time frame: 2 days

07

Study locations

5 sites
  • Princess Royal Infirmary
    Glasgow, Lanarkshire G31 2ER, United Kingdom
  • Simpson Centre for Reproductive Health, Royal Infirmary Hospital, Edinburgh
    Edinburgh, Lothian EH16 4SA, United Kingdom
  • Western General Hospital
    Edinburgh, Lothian EH4 2XU, United Kingdom
  • St Johns Hospital
    Livingston, West Lothian, United Kingdom
  • Queen Elizabeth Hospital
    Glasgow, United Kingdom
08

References and documents

Publications

  • Reynolds RM, Denison FC, Juszczak E, Bell JL, Penneycard J, Strachan MWJ, Lindsay RS, Alexander CI, Love CDB, Whyte S, Mackenzie F, Stenson B, Norman JE. Glibenclamide and metfoRmin versus stAndard care in gEstational diabeteS (GRACES): a feasibility open label randomised trial. BMC Pregnancy Childbirth. 2017 Sep 22;17(1):316. doi: 10.1186/s12884-017-1505-3. PubMed 28938877 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 8, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02080377
Lead sponsor
University of Edinburgh
Collaborators
Chief Scientist Office of the Scottish Government
Responsible party
Sponsor
First posted
Mar 6, 2014
Start date
Jul 2014
Primary completion
Oct 2015
Completion
Mar 2016
Last update
Dec 8, 2016

Study contacts

Jane E Norman, MD
principal investigator · University of Edinburgh

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2015. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion