Efficacy and Safety of Metformin in Preventing Patients With Risperidone From Weight Gain and Amenorrhea

Overview[ - collapse ][ - ]

Purpose Some previous studies has demonstrated that Metformin can improve the weight gain which caused by antipsychotics. An our study, which will be published, also found that Metformin can improve the amenorrhea for patients with antipsychotics, approximately 60% patients recovery period. So the present study was designed to investigate the efficacy and safety of Metformin in preventing patients with Risperidone from weight gain and amenorrhea.
ConditionWeight Gain
Amenorrhea
InterventionDrug: Metformin
Other: Starch tablets
PhaseN/A
SponsorCentral South University
Responsible PartyCentral South University
ClinicalTrials.gov IdentifierNCT01423487
First ReceivedAugust 18, 2011
Last UpdatedJuly 31, 2012
Last verifiedJuly 2012

Tracking Information[ + expand ][ + ]

First Received DateAugust 18, 2011
Last Updated DateJuly 31, 2012
Start DateAugust 2011
Estimated Primary Completion DateAugust 2013
Current Primary Outcome MeasuresChange from Baseline in weight at 24 weeks [Time Frame: baseline, 8 week, 16 week, 24 week] [Designated as safety issue: No]The data will be presented
Current Secondary Outcome MeasuresChange from Baseline in menstruation at 24 weeks [Time Frame: baseline, 4 week, 8 week, 12 week, 16 week, 20 week, 24 week] [Designated as safety issue: No]The data will be presented

Descriptive Information[ + expand ][ + ]

Brief TitleEfficacy and Safety of Metformin in Preventing Patients With Risperidone From Weight Gain and Amenorrhea
Official TitleEfficacy and Safety of Metformin in Preventing Patients With Risperidone From Weight Gain and Amenorrhea:a 24-week, Randomized, Placebo-controlled, Double-blind, Fixed-dose Study
Brief Summary
Some previous studies has demonstrated that Metformin can improve the weight gain which
caused by antipsychotics. An our study, which will be published, also found that Metformin
can improve the amenorrhea for patients with antipsychotics, approximately 60% patients
recovery period. So the present study was designed to investigate the efficacy and safety of
Metformin in preventing patients with Risperidone from weight gain and amenorrhea.
Detailed DescriptionNot Provided
Study TypeInterventional
Study PhaseN/A
Study DesignAllocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Prevention
Condition
  • Weight Gain
  • Amenorrhea
InterventionDrug: Metformin
0.5g bid 26 weeks
Other: Starch tablets
0.5g bid 26 weeks
Study Arm (s)
  • Experimental: efficacy and safety
    To investigate the efficacy and safety of Metformin in preventing patients with Risperidone from weight gain and amenorrhea.
  • Placebo Comparator: placebo comparator
    To investigate whether plcebo also could preventing patients with Risperidone from weight gain and amenorrhea.

Recruitment Information[ + expand ][ + ]

Recruitment StatusWithdrawn
Estimated EnrollmentNot Provided
Estimated Completion DateAugust 2013
Estimated Primary Completion DateFebruary 2013
Eligibility Criteria
Inclusion Criteria:

1. age 18-40 years.

2. diagnosis of schizophrenia (naive first-episode) as defined in DSM-IV axis I.

3. At screening, patients were required to have total score ≥60 on Positive and Negative
Syndrome Scale (PANSS) and ≥4 on the Clinical Global Impression-severity scale
(CGI-S).

4. treat with Risperidone.

5. Never participate in a diet control nor in other weight loss programs, and have a
normal Period.

6. Written informed consents could be obtained from patients(or their Legal guardian).

Exclusion Criteria:

1. Female patients, those who were in the period of pregnancy and lactation, or plan
pregnancy, were excluded.

2. Patients with serious physical disease patients, just like Epilepsy, liver and kidney
dysfunction, diabetes, blood diseases, etc were excluded.

3. At screening, patients with abnormal results in physical examination, laboratory
test, or electrocardiogram (ECG) were excluded.

4. Patients were also excluded if they met primary DSM-IV axis I psychiatric disorders
other than schizophrenia, or ever used psychoactive substance.
GenderFemale
Ages18 Years
Accepts Healthy VolunteersNo
ContactsNot Provided
Location CountriesChina

Administrative Information[ + expand ][ + ]

NCT Number NCT01423487
Other Study ID NumbersCSUXXEYYJYS-051
Has Data Monitoring CommitteeYes
Information Provided ByCentral South University
Study SponsorCentral South University
CollaboratorsNot Provided
Investigators Study Chair: Jing-Ping Zhao, Dr., Ph.D. Mental Health Institute of The Second Xiangya Hospital, Central South University
Verification DateJuly 2012

Locations[ + expand ][ + ]

Mental Health Institute of The Second Xiangya Hospital
Changsha, Hunan, China, 410011