Effect of Metformin Use on Weight Loss in Obese, Non-diabetic People (MOWRI)

Trial statusRecruiting
Trial phasePhase 3
Trial typeInterventional
Biological sexAll
Age20-59
SponsorUniversity Of Nigeria Teaching Hospital

About this trial

Obesity is a chronic disease of global public health concern, contributing to cardiovascular disease, type 2 diabetes and certain cancers. Currently approved anti-obesity drugs and surgery are expensive and not readily available in Nigeria.

Metformin, approved for type 2 diabetes, has been shown to promote weight loss among obese patients in high income countries. However, metformin's effects have not yet been demonstrated in Black African populations, which may have different genetic and environmental predispositions to obesity and to the effect of metformin. This blinded, placebo-controlled, randomized trial is determining the effect of metformin on weight loss, cardiovascular disease risk and insulin resistance in Black Nigerians.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

• Obesity (defined as body mass index ≥ 30kg/m2),

Fasting plasma glucose (<7.0mmol/L)

No medical treatment for weight control in the previous 12 months

No participation in a current clinical trial

Disqualifiers

• Obesity (defined as body mass index ≥ 30kg/m2),

Fasting plasma glucose (<7.0mmol/L)

No medical treatment for weight control in the previous 12 months

No participation in a current clinical trial

Trial design

Design model

Parallel

Treatments tested in this trial

  • Metformin

    Drug

    Metformin 500mg extended release tablets taken to a maximum of 1500mg once daily

  • Placebo

    Drug

    Starch-based, identical looking placebo

Treatment groups

220 Participants
are divided into 2 treatment groups
Group A: Treatment armExperimental treatment 1 intervention
Group B: Control armPlacebo comparator 1 intervention

Trial outcomes

Primary outcomes

1

Effect of Metformin on body weight change

Determine percent change in body weight in kilograms and height in meters which will be combined to report BMI in kg/m2 among the treatment arm and compared to the control arm.

Time frame
24 months
2

Effect of Metformin on Cardiovascular risk

Determine percent change in the 10 year Framingham risk score for cardiovascular disease among the treatment arm and compare with the control arm.

Time frame
24 months
3

Effect of Metformin on insulin resistance in non-diabetics

Determine percent change in the insulin resistance indices using Homeostatic model assessment (HOMA) among the treatment arm and compare to the control arm.

Time frame
24 months
4

Effect of metformin on waist circumference change

Determine the percent change in waist circumference measured in cm at baseline and final readings among the treatment arm and compared to the control arm.

Time frame
24 months

Secondary outcomes

1

Safety of Metformin extended release tablet taken daily

Determine the incidence of adverse effects at grade 3 or higher level using the Adverse Effect questionnaire when dosage of less than or equal to 1500mg of Metformin X extended release tablet is taken daily.

Time frame
24 months
2

Percent drug compliance to Metformin extended release taken once daily.

Determine the percent drug compliance to administered Metformin extended release tablets, determined by count of actual number of drug tablets administered over count of what was expected to have been administered, expressed as a percentage.

Time frame
24 months

Other outcomes

Sponsors and contacts

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