Use of metformin in obese adolescent patients

INTERVENTION: Product Name: metformin Pharmaceutical Form: Capsule, hard INN or Proposed INN: Metformin Concentration unit: mg milligram(s) Concentration type: equal Concentration number: 850‐ Pharmaceutical form of the placebo: Capsule, hard Route of administration of the placebo: Oral use CONDITION: Obesity ; MedDRA version: 9.1 Level: SOC Classification code 10027433 ; MedDRA version: 9.1 Level: HLGT Classification code 10003018 ; MedDRA version: 9.1 Level: HLT Classification code 10018067 ; MedDRA version: 9.1 Level: PT Classification code 10029883 PRIMARY OUTCOME: Main Objective: To assess whether changes in BMI and one or more additional cardiovascular risk factors (waist circumferance, HOMA‐IR, HDL cholesterol, triglycerides, arterial blood pressure) occur during and/or after metformin treatment in insulin‐resistant obese patients aged 10 to 16 years. Primary end point(s): Variation of BMI and of prevalence of one or more additional cardiovascular risk factors (waist circumference, HOMA‐IR, glucose, HDL cholesterol, triglycerides, arterial blood pressure) during and/or after metformin. Secondary Objective: To evaluate whether changes in cytokine levels during and/or after metformin therapy occur in insulin‐resistant obese patients aged 10 to 16 years. This will clarify the role of cytokines in the obesity‐related insulin resistance. INCLUSION CRITERIA: Caucasian subjects of both sexes, between 10 and 16 years of age. INCLUSION CRITERIA: 1) BMI higher or equal to 95? percentile for sex and age; 2) HOMA‐IR higher or equal to 2,5 in pre‐pubertal patients and 4 in pubertal patients 3) HDL cholesterol inferior or equal to 40 mg/dl, or triglycerides higher or equal to 150 mg/dl, or systolic pressure higher or equal to 130 mmHg, or diastolic pressure higher or equal to 85 mmHg. Are the trial subjects under 18? yes Number of subjects for this age range: F.1.2 Adults (18‐64 years) no F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range