Sibutramine-metformin Combination Versus Sibutramine and Metformin Monotherapy in Obese Patients

Overview[ - collapse ][ - ]

Purpose The aim of this study is to evaluate the effect of sibutramine and metformin combination therapy in comparison with sibutramine or metformin monotherapy over weight, adiposity, glucose metabolism and inflammatory state in obese patients.
ConditionObesity
InterventionDrug: Sibutramine-Metformin
Drug: Sibutramine
Drug: Metformin
PhasePhase 3
SponsorLaboratorios Silanes S.A. de C.V.
Responsible PartyLaboratorios Silanes S.A. de C.V.
ClinicalTrials.gov IdentifierNCT00941382
First ReceivedJuly 14, 2009
Last UpdatedJuly 15, 2009
Last verifiedJuly 2009

Tracking Information[ + expand ][ + ]

First Received DateJuly 14, 2009
Last Updated DateJuly 15, 2009
Start DateNovember 2008
Estimated Primary Completion DateSeptember 2009
Current Primary Outcome Measuresimprovement of body weight, adiposity and inflammation state defined by serum adiponectin, leptin and C reactive protein [Time Frame: 6 months] [Designated as safety issue: No]
Current Secondary Outcome Measures
  • improvement of metabolic profile, defined by triglycerides, total cholesterol, HDL cholesterol, LDL cholesterol, insulin, and insulin sensitivity [Time Frame: 6 months] [Designated as safety issue: No]
  • adverse events [Time Frame: 6 months] [Designated as safety issue: Yes]

Descriptive Information[ + expand ][ + ]

Brief TitleSibutramine-metformin Combination Versus Sibutramine and Metformin Monotherapy in Obese Patients
Official TitleDouble-blind, Randomized Clinical Trial to Evaluate Effect of Combination Therapy of Metformin and Sibutramine Versus Metformin or Sibutramine Monotherapy Over Weight, Adiposity, Glucose Metabolism and Inflammatory State in Obese Patients
Brief Summary
The aim of this study is to evaluate the effect of sibutramine and metformin combination
therapy in comparison with sibutramine or metformin monotherapy over weight, adiposity,
glucose metabolism and inflammatory state in obese patients.
Detailed Description
The treatment of obesity is strongly recommended because it exacerbates insulin resistance,
hypertension, dyslipidemia and atherosclerosis, and represents a risk factor for type 2
diabetes. Although diet and exercise are valuable in this treatment, patient compliance is a
major problem. Sibutramine has been shown to be a highly effective pharmacotherapy for weigh
loss in obese patients, mediated by increased satiety and an enhancement of energy
expenditure. Metformin is widely used for glycemia control and is associated with a small to
moderate body weight loss. We are assessing the combination of sibutramine and metformin,
two agents with different mechanisms of action for control of body weight and metabolic
dysregulation.
Study TypeInterventional
Study PhasePhase 3
Study DesignAllocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator, Outcomes Assessor), Primary Purpose: Treatment
ConditionObesity
InterventionDrug: Sibutramine-Metformin
sibutramine and metformin, 15 mg per day and 850 mg per day, respectively, in a single tablet, for 180 days
Other Names:
combination therapyDrug: Sibutramine
15 mg per day for 180 days
Other Names:
Sibutramine monohidrate HydrochlorideDrug: Metformin
Metformin 850 mg per day for 180 days
Other Names:
Metformin Hydrochloride
Study Arm (s)
  • Experimental: Sibutramin-Metformin
    Sibutramine-metformin therapy in a single tablet
  • Active Comparator: Sibutramine
    Sibutramine monotherapy
  • Active Comparator: Metformin
    Metformin monotherapy

Recruitment Information[ + expand ][ + ]

Recruitment StatusActive, not recruiting
Estimated Enrollment60
Estimated Completion DateSeptember 2009
Estimated Primary Completion DateAugust 2009
Eligibility Criteria
Inclusion criteria

- Age between 30 and 50 years

- Both genders

- BMI between 30 and 40

- Stable body weigh defined by over 5 per cent variability during the previous 3 months

- Fasting serum glucose less than 126 mg per dl

- Blood pressure over 140 and 90 mmHg

- Women ensuring contraceptive precautions.

- Communication and understanding capability.

- Informed consent awarding.

Exclusion criteria

- Women were excluded if they were pregnant or lactating potential while no taking
adequate contraceptive precautions

- Any smoking during the preceding 6 months

- No physical activity, defined by less than 15 minutes per day of walking

- Excessive physical activity equivalent to running over 60 minutes per day

- Known hypersensitivity to sibutramine or metformin

- Low commitment to follow the protocol statements

- Any investigational medication during the preceding 6 months

- Any drug or substance mayor toxicity exposure during the preceding 3 months

- Alcohol or any drug abuse during the previous 3 months

- Current medication of oral corticosteroids, anticoagulants, sympathomimetics,
sympatholytics, lipid lowering drugs, any medication for type 2 diabetes, and any
sibutramine interaction drug

- Current or previous evidence of ischemic heart disease, cardiac arrhythmia,
cerebrovascular disease, chronic hepatic disease, two fold persistent elevation of
ALT, AST or FA

- Carrying a pacemaker or any permanent bioelectronic component that could interfere
with bioimpedance process

- Renal failure defined by serum creatinine equal or ever 1.2 mg per dL

- Not controlled thyroid disease defined by altered serum T3, T4 and TSH during the
previous 3 months

- Hypertension

- Type 2 diabetes

- Anti-depressants, or any psychiatric disturbance treatment
GenderBoth
Ages30 Years
Accepts Healthy VolunteersNo
ContactsNot Provided
Location CountriesMexico

Administrative Information[ + expand ][ + ]

NCT Number NCT00941382
Other Study ID NumbersOB Sil-02
Has Data Monitoring CommitteeYes
Information Provided ByLaboratorios Silanes S.A. de C.V.
Study SponsorLaboratorios Silanes S.A. de C.V.
CollaboratorsNot Provided
Investigators Study Director: Jorge A González-Canudas, MD Laboratorios SilanesStudy Chair: Manuel González-Ortiz, PHD Universidad de GuadalajaraPrincipal Investigator: ESperanza Martínez-Abundis, PHD Universidad de Guadalajara
Verification DateJuly 2009

Locations[ + expand ][ + ]

Centro Universitario de Ciencias de la Salud
Guadalajara, Jalisco, Mexico, 44340