Closing
Does metformin improve all-cause mortality versus placebo?
Mostly studied in type 2 & unspecified diabetes.
Not modeled yetTrial evidence exists, but no mechanistic model yetWithout a model there is no decisive experiment to propose. Help build it. →
Where the evidence stands
Doubtful. So far, no trial evidence yet.
NoUnsureYes
- Belief
- 0.25 (range 0.10–0.70)
- Trials for
- 0
- Trials against
- 0
- Inconclusive
- 1
Already under way
- Effects of GLP-1 Receptor Agonists Combined with Metformin and Healthy Lifestyle Education Prior to Fertility Treatment on Reproductive Outcomes in Women with…NCT06775093 · not yet recruiting · started 2025
- A Randomized, Open-label, Clinical Trial Evaluating the Anti-atherosclerotic Efficacy of Selected Antidiabetic Drugs in Patients With Coronary Artery Disease…NCT07254572 · recruiting · started 2025
- DECIDE: A Comparative Effectiveness Trial of Oral Metformin Versus Injectable Insulin for the Treatment of Gestational DiabetesNCT06445946 · recruiting · started 2024
- CSP #2002 - Investigation of Metformin in Pre-Diabetes on Atherosclerotic Cardiovascular OuTcomes (VA-IMPACT)NCT02915198 · recruiting · started 2023
- Administration of Metformin and Insulin to Pancreatic Cancer Related Diabetes Mellitus (Type 3c)NCT05306028 · active not recruiting · started 2022
The evidence so far
- Registered trials
- 55
- With posted results
- 24
- Published papers
- 83
Of 1 decided analyses: 0 favor metformin, 1 find no difference, 0 favor the comparator.
Papers
- Impact of metformin on the risk and treatment outcomes of tuberculosis in diabetics: a systematic review.Meta-analysis / systematic review · 2019
- Metformin for prevention or delay of type 2 diabetes mellitus and its associated complications in persons at increased risk for the development of type 2 diabetes mellitus.Meta-analysis / systematic review · 2019
- Effect of Antidiabetic Therapy on Clinical Outcomes of COVID-19 Patients With Type 2 Diabetes: A Systematic Review and Meta-Analysis.Meta-analysis / systematic review · 2023
- The impact of metformin use on survival in kidney cancer patients with diabetes: a meta-analysis.Meta-analysis / systematic review · 2017
- The effect of metformin on lung cancer risk and survival in patients with type 2 diabetes mellitus: A meta-analysis.Meta-analysis / systematic review · 2020
- Prognostic role of metformin intake in diabetic patients with colorectal cancer: An updated qualitative evidence of cohort studies.Meta-analysis / systematic review · 2017
Trials
- Diabetes Prevention Program Outcomes StudyNCT00038727 · 5 posted results
- A Randomized Phase 3 Trial of Metformin in Patients Initiating Androgen Deprivation Therapy as Prevention and Intervention of Metabolic Syndrome: The Prime StudyNCT03031821
- Adaptive Study for Efficacy and Safety of Metformin Glycinate for the Treatment of Patients With MS and DM2, Hospitalized With Severe Acute Respiratory Syndrome Secondary to SARS-CoV-2. Randomized, Double-Blind, Phase IIIb.NCT04626089
- Metformin Continuation Safety in Diabetic Patients Undergoing Coronary AngiographyNCT04766008
- Glyburide and Metformin for the Treatment of Gestational Diabetes Mellitus. A Systematic Review and Meta-analysis of Randomized Controlled Trials Comparing These Drugs Either vs Insulin or vs Each Other.NCT01998113
- A Long Term, Open Label, Randomised Study in Patients With Type 2 Diabetes, Comparing the Combination of Rosiglitazone and Either Metformin or Sulfonylurea With Metformin Plus Sulfonylurea on Cardiovascular Endpoints and GlycaemiaNCT00379769 · 15 posted results
- Does Metformin Improve Pregnancy Outcomes (Incidence of LGA (≥90% Birth Weight Centile) Babies, Onset of Maternal GDM, Hypertension, PET, Macrosomia, Shoulder Dystocia, Admission to SCBU) in Obese Non-diabetic Women?NCT01273584
- Metformin Continuation Versus Interruption Following Coronary Angiography: a Pilot Randomized Controlled TrialNCT03980990