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DIABOUT - Extending time without diabetes after bariatric surgery: a randomized controlled trial comparing the metformin addition or not to standard care

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2024-516409-22-00
Acronym
P170901J
Enrollment
126
Registered
2024-08-14
Start date
2021-01-07
Completion date
Unknown
Last updated
2025-07-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Type 2 Diabetes complete remission after bariatric surgery under antidiabetic drug

Brief summary

Proportion of patients with partial or complete T2D remission criteria at three years in T2D patients operated of BS (GB or SG). Criteria for diabetes remission assessment will be used as described in 2012 in the American Diabetes Association guidelines (8,9): - Complete remission: HbA1c<5.7% and no anti-diabetic medication (except metformin in the experimental group). - Partial remission: HbA1c<6.5% and no anti-diabetic medication (except metformin in the experimental group).

Detailed description

Proportion of patients with T2D partial or complete remission criteria at 1 and 2 years, Proportion of patients with strict complete remission at 3 years, Percentage of weight and BMI change at 1,2 and 3 years compared to baseline, Level of cardio-metabolic parameters associated to T2D (fasting glycaemia and insulinemia, HOMA-IR, triglycerides and HDL cholesterol, blood pressure) at 1,2 and 3 years compared to baseline, Level of nutritional parameters associated with BS (albumin, hemoglobin, iron, serum ferritin, transferrin saturation, calcium, vitamins D and B1, B9, B12) at 1,2 and 3 years compared to baseline, Proportion of adverse drug reactions in the intervention group compared to standard care all along the trial (all visits), Adherence level in the intervention group as measured using pill counts (defined as taking at least 80% of assigned study pills in the intervention group) (all visits) and metformin plasmatic dosage at 1,2 and 3 years in sites that can perform it, Number and level of retinopathy, nephropathy and macroangiopathy events at 3 years, Quality of life changes assessed by EQ5D auto-questionnaire from baseline to 1, 2 and 3 years, 5y-Ad-Diarem score calculated with baseline data (inclusion) to assess clinical outcome at the end of the study, Changes in fecal microbiota (diversity, composition and function) from baseline at 1 and 3 years

Interventions

DRUGMETFORMIN

Sponsors

Assistance Publique Hopitaux De Paris
Lead SponsorOTHER

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Proportion of patients with partial or complete T2D remission criteria at three years in T2D patients operated of BS (GB or SG). Criteria for diabetes remission assessment will be used as described in 2012 in the American Diabetes Association guidelines (8,9): - Complete remission: HbA1c<5.7% and no anti-diabetic medication (except metformin in the experimental group). - Partial remission: HbA1c<6.5% and no anti-diabetic medication (except metformin in the experimental group).

Secondary

MeasureTime frame
Proportion of patients with T2D partial or complete remission criteria at 1 and 2 years, Proportion of patients with strict complete remission at 3 years, Percentage of weight and BMI change at 1,2 and 3 years compared to baseline, Level of cardio-metabolic parameters associated to T2D (fasting glycaemia and insulinemia, HOMA-IR, triglycerides and HDL cholesterol, blood pressure) at 1,2 and 3 years compared to baseline, Level of nutritional parameters associated with BS (albumin, hemoglobin, iron, serum ferritin, transferrin saturation, calcium, vitamins D and B1, B9, B12) at 1,2 and 3 years compared to baseline, Proportion of adverse drug reactions in the intervention group compared to standard care all along the trial (all visits), Adherence level in the intervention group as measured using pill counts (defined as taking at least 80% of assigned study pills in the intervention group) (all visits) and metformin plasmatic dosage at 1,2 and 3 years in sites that can perform it, Number a

Countries

France

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026