NCT03558867

Brief Summary

Prediabetes is a common condition in overweight individuals affecting approximately 35% of American adults and 30% of Australian adults. Like diabetes, prediabetes is a serious risk factor for cardiovascular disease, eye, kidney and liver disease, and some types of cancer. Appropriate blood glucose control is crucial in preventing pre-diabetes complications and onset of diabetes, yet clinical practice, backed by randomised trials, reports that many patients treated with standard dietary guidelines or with the first-line treatment of diabetes patients, metformin, do not improve blood glucose control sufficiently. The overarching goal of the present project is to improve the efficacy of metformin mono-therapy in pre-diabetes and early type 2 diabetes.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
138

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Jun 2018

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 5, 2018

Completed
Same day until next milestone

Study Start

First participant enrolled

June 5, 2018

Completed
10 days until next milestone

First Posted

Study publicly available on registry

June 15, 2018

Completed
5.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 15, 2023

Completed
7 months until next milestone

Study Completion

Last participant's last visit for all outcomes

July 23, 2024

Completed
Last Updated

October 31, 2024

Status Verified

August 1, 2023

Enrollment Period

5.5 years

First QC Date

June 5, 2018

Last Update Submit

October 29, 2024

Conditions

Keywords

Pre DiabetesInsulin resistanceMetforminGut microbiotaType 2 Diabetes Mellitus

Outcome Measures

Primary Outcomes (1)

  • Mean change in glycated haemoglobin (HbA1C, %) from baseline

    Difference in the reduction of HbA1C between the groups

    6 months

Secondary Outcomes (10)

  • Total daily time of interstitial glucose levels below 7.8 mmol/L (140 mg/dL)

    6 months

  • Glycaemic variability

    6 months

  • Body weight

    6 months

  • Body fat mass

    6 months

  • Abdominal visceral fat volume

    6 months

  • +5 more secondary outcomes

Other Outcomes (1)

  • Gut microbiome (exploratory)

    6 months

Study Arms (2)

Metformin + Healthy diet

PLACEBO COMPARATOR

Metformin (1500 mg/d, Extended Release) + Healthy, low fat diet

Drug: Metformin + Healthy diet

Metformin + Personalized diet

ACTIVE COMPARATOR

Metformin (1500 mg/d, Extended Release) + Personalized diet based on an algorithm developed at the Weizmann Institute of Science (Zeevi et al, Cell 2015)

Drug: Metformin + Personalized diet

Interventions

Metformin (1500 mg/d, Extended Release) + Healthy, low fat diet

Also known as: Metformin + Healthy (low fat) diet
Metformin + Healthy diet

Metformin (1500 mg/d, Extended Release) + Algorithm-based personalized diet

Metformin + Personalized diet

Eligibility Criteria

Age20 Years - 70 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Individuals with pre-diabetes or newly-diagnosed (in the last 6 months) with type 2 diabetes, fulfilling the following criteria:
  • Impaired fasting glucose (IFG, plasma glucose \[PG\]- 5.6 - 6.9 mmol/L, ±0.2 mmol/L) and/or impaired glucose tolerance (IGT, 2-h PG 7.8 - 11.0 mmol/L, ±0.2 mmol/L) with or without elevated HbA1c (up to 8.0 %).
  • Willingness to provide written informed consent and willingness to participate and comply with the study.

You may not qualify if:

  • Females planning a pregnancy during the course of the research or 3 months after completion of the research project.
  • Patients with type 1 diabetes, chronically active inflammatory disease, neoplastic disease in the previous 3 years, chronic gastrointestinal disorders, including inflammatory bowel disease or celiac.
  • Liver enzymes ALT and/or AST\>3-times normal range limit.
  • Abnormal renal function as measured by (eGFR\<45 mL/min/1.73m\^2).
  • Individuals with a history of a psychological illness or condition that may interfere with the individual's ability to understand the requirements of the study.
  • Normo-glycaemia.
  • HbA1c\>8.0%
  • Cardiovascular event in the previous 6 months.
  • Current or recent (within 24 months) treatment with a glucose lowering medication (i.e. GLP-1 receptor agonist, SGLT2 inhibitor, thiazolidinedione, sulfonylurea, DPP-4 inhibitor or insulin).
  • Current or recent (within 3 months) treatment with metformin.
  • Treatment with an oral steroid.
  • Treatment with antibiotics/antifungal in the last 3 month.
  • Treatment with immunosuppressive medications.
  • Alcohol or substance abuse.
  • Participants who had received an investigational new drug within the last 6 months.
  • +3 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Garvan Institute of Medical Research

Sydney, New South Wales, 2010, Australia

Location

Related Publications (1)

  • Htet TD, Godneva A, Liu Z, Chalmers E, Kolobkov D, Snaith JR, Richens R, Toth K, Danta M, Hng TM, Elinav E, Segal E, Greenfield JR, Samocha-Bonet D. Rationale and design of a randomised controlled trial testing the effect of personalised diet in individuals with pre-diabetes or type 2 diabetes mellitus treated with metformin. BMJ Open. 2020 Oct 10;10(10):e037859. doi: 10.1136/bmjopen-2020-037859.

Related Links

MeSH Terms

Conditions

Glucose IntoleranceDiabetes Mellitus, Type 2Insulin Resistance

Interventions

MetforminDiet, HealthyDiet, Fat-RestrictedDiet

Condition Hierarchy (Ancestors)

HyperglycemiaGlucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic DiseasesDiabetes MellitusEndocrine System DiseasesHyperinsulinism

Intervention Hierarchy (Ancestors)

BiguanidesGuanidinesAmidinesOrganic ChemicalsNutritional Physiological PhenomenaDiet, Food, and NutritionPhysiological PhenomenaDiet TherapyNutrition TherapyTherapeutics

Study Officials

  • Dorit Samocha-Bonet, PhD

    Garvan Institute of Medical Research

    PRINCIPAL INVESTIGATOR
  • Jerry Greenfield, MD, PhD

    Garvan Institute of Medical Research

    PRINCIPAL INVESTIGATOR
  • Eran Elinav, MD, PhD

    Weizmann Institute of Science

    PRINCIPAL INVESTIGATOR
  • Eran Segal, PhD

    Weizmann Institute of Science

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 5, 2018

First Posted

June 15, 2018

Study Start

June 5, 2018

Primary Completion

December 15, 2023

Study Completion

July 23, 2024

Last Updated

October 31, 2024

Record last verified: 2023-08

Locations