Ignite Creation Date:
2024-05-05 @ 6:47 PM
Last Modification Date:
2024-10-26 @ 9:37 AM
Study NCT ID:
NCT00547118
Status:
TERMINATED
Last Update Posted:
2019-11-04
First Post:
2007-10-19
Brief Title:
The Effects of Rimonabant on Weight and Metabolic Risk Factors
Sponsor:
University of Maryland Baltimore
Organization:
University of Maryland Baltimore
Study Overview
Official Title:
The Effects of the Cannabinoid-1 Receptor Antagonist Rimonabant on Weight and Metabolic Risk Factors in People With Schizophrenia
Status:
TERMINATED
Status Verified Date:
2019-10
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Withdrawn due to medication withdrawal from the EMEA
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
1 To examine the efficacy of rimonabant in decreasing weight and metabolic parameterscardiovascular disease risk in people with schizophrenia receiving second generation antipsychotics 2 To examine the safety and tolerability of rimonabant as an adjunctive agent for decreasing weight and metabolic risk in people with schizophrenia 3 To examine the efficacy of rimonabant for neurocognitive impairments in people with schizophrenia treated with second-generation antipsychotics secondary outcome 4 To examine the efficacy of rimonabant for patient perceived health outcomes and quality of life secondary outcome 5 To test the effect of rimonabant on cigarette smoking nicotine dependence and nicotine craving in people with schizophrenia 6 To examine the effects of rimonabant on food satiety in people with schizophrenia
There is an increasing awareness of the problem of metabolic issues in people with schizophrenia and renewed focus on physical health care for this population There is under-treatment in general of medical conditions in people with schizophrenia and increased mortality from natural causes People with schizophrenia are at risk for developing obesity due to many factors including inactive lifestyle poor dietary choices and side effects of the commonly used atypical antipsychotics Metabolic syndrome has been discussed in the cardiology and endocrinology for over two decades but its prevalence in the mentally ill is only now being fully realized Diabetes mellitus may be twice as prevalent among patients with schizophrenia as in the general population and metabolic syndrome is probably even more prevalent than diabetes among people with schizophrenia There is now an opportunity to address this serious problem A new drug rimonabant has recently been approved in several European and Latin American countries This drug represents the first of a new class of psychoactive drugs witch may improve metabolic problems through decreasing appetite drive This may also help decrease the drive for cigarette use which is also a great problem for people with schizophrenia Is this a safe and effective treatment in this population This study proposes to test this question in a rapid study which will develop the basis for future work in this important area
There is an increasing awareness of the problem of metabolic issues in people with schizophrenia and renewed focus on physical health care for this population There is under-treatment in general of medical conditions in people with schizophrenia and increased mortality from natural causes People with schizophrenia are at risk for developing obesity due to many factors including inactive lifestyle poor dietary choices and side effects of the commonly used atypical antipsychotics Metabolic syndrome has been discussed in the cardiology and endocrinology for over two decades but its prevalence in the mentally ill is only now being fully realized Diabetes mellitus may be twice as prevalent among patients with schizophrenia as in the general population and metabolic syndrome is probably even more prevalent than diabetes among people with schizophrenia There is now an opportunity to address this serious problem A new drug rimonabant has recently been approved in several European and Latin American countries This drug represents the first of a new class of psychoactive drugs witch may improve metabolic problems through decreasing appetite drive This may also help decrease the drive for cigarette use which is also a great problem for people with schizophrenia Is this a safe and effective treatment in this population This study proposes to test this question in a rapid study which will develop the basis for future work in this important area
Detailed Description:
Part I will be a 2-week evaluation phase In Part I subjects undergo a diagnostic interview for symptoms and treatment along with medical side effect measures and neuropsychological tests tests for memory attention and motor task skills An electrocardiogram EKG a urine sample and about 3 tablespoons of blood will be taken for laboratory tests Women will have a pregnancy test This part of the study is 3-4 visits The time of the visits will be about 8 hours
Part II is a 16-week treatment phase subjects will be randomly assigned to either rimonabant or placebo for a 16-week period The medication will be given in unmarked capsules so that subjects will not know which medication they are receiving Only the pharmacist will know which medications subjects are receiving If an emergency occurs we will break the blind and give appropriate care This phase will require one visit every week and each visit may take up to 2-3 hours Subjects will be examined every week to check symptoms side effects Subjects symptoms will be evaluated using specially designed rating scales to ask about their daily experiences and feelings Evaluations that occur every 4 weeks may take about 2 hours At week 8 and week 16 laboratory tests will be repeated These tests will be compared to the baseline tests taken in Part I The end of study tests may take up to a total of 8 hours and may require 3-4 visits All testing is done for research purposes only and would not be performed if subjects were not participating in this study The total number of visits requested for this study will be 16-20 When subjects undergo neuropsychological testing we will examine their ability to learn and remember numbers and words to pay attention and to quickly perform motor tasks A motor task is when you use your hands to perform a task such as placing pegs into a piece of wood These tests will take about 2 hours and are done at the beginning of Part I and the end of Part II
Diet and exercise counseling will be held weekly for groups and individuals Sessions will focus on topics such as calories fat content portion control and determining a healthy weight We will request that participants maintain a food diary and exercise approximately 30 minutes3 times per week Subjects will be encouraged to attend the counseling sessions Transportation will be available for subjects If patients have not attended sessions they will be reeducated on the importance of attending sessions at the time of clinical ratingsSubjects will not be discharged from the study if they do not attend sessions
Randomization will be done using a permuted block randomization system and will be stratified by clozapineolanzapine treatment at baseline Treatment assignment order is random within each block and the total number of patients assigned to each treatment is equal The block sizes will vary between sizes 2 and 4 in random sequence The unblinded pharmacist will be notified of the treatment assignment and will inform unblinded pharmacists at the other sites about which study medication to dispense In an emergency research staff will be able to contact the pharmacy for unblinding Rimonabant will be available in 20 mg capsules with matched placebo
For outpatients study medication will be dispensed on a weekly basis plus two extra days of medication Inpatient subjects will receive their study medication daily from the Maryland Psychiatric Research Center MPRC Treatment Research Program TRP central pharmacy by a non-blind pharmacist The blind will be broken only if a medical emergency requires this information If this occurs the patient will be withdrawn from the study
All raters investigators and other staff will be blind to treatment assignment except for the pharmacist The pharmacist does not participate in assessing any of the primary symptom or side effect dependent variables and conveys no information about treatment assignment to patients or staff except in a medical emergency
Patients receiving 75 of their assigned medication will be considered compliant Outpatient compliance will be monitored through weekly pill counts and subject interviews Inpatient compliance will be monitored through inpatient medication records If a patient is observed to be non-compliant then this will be discussed with the patient and a plan formulated to bring the patient back within the compliance parameter For outpatients the plan may include contacting the patients caretaker or scheduling increased clinic visits These monitoring procedures have been used in other MPRC studies and have resulted in high levels of compliance Compliance patterns will be carefully monitored in each treatment group and will be described as part of any presentation of study results
Satiety is defined as the reduced willingness to eat after a meal not due to sickness or other extraneous factors and can be thought of as sensations of fullness A preload and a test meal will be used in this study The preload is a fixed amount of food given to the participant that is consumed in its entirety The test meal is a food or foods served following the preload in sufficient quantity so that the participant can eat as much as desired The amount consumed of the test meal is measured and used as an index of satiety Likert and Visual Analog Scales VAS will also be used
We will employ both the preload-test meal paradigm along with rating scales in the present study to investigate the effects of rimonabant on satiety signaling The testing will occur at baseline week 8 and week 16 to see if the effect changes All three testing occasions will be the same Participants will arrive after skipping breakfast and given a preload of 12 oz of Ensure 375 kcal served chilled in a large plastic cup Hunger ratings will be taken at baseline then every 30 minutes for 90 minutes After 60 minutes a test meal consisting of a pre-weighed bowl each of Reduced Fat Wheat Thins and Nilla Wafers will be given These will be kept in separate bowls so that exact caloric consumption can be measured The test meal will be served with 12 oz of water served chilled in a large plastic cup Satiety will be assessed by the quantity of Wheat Thins Nilla Wafers and water consumed and the difference between the hunger rating score from baseline for each time point
About 75 of subjects will be smokers Smoking measures will be performed on those with 8 ppm CO in expired breath and who smoke at least 5 cigarettes daily One approach to studying tobacco craving in the laboratory is to compare smokers responses when exposed to neutral and smoking-related in vivo cues In vivo or real-life cues are either presented by the experimenter or involve manipulation of materials by the participant For this study after smoking a cigarette at baseline 15 minutes before testing begins patients will be asked to complete the Tobacco Craving Questionnaire TCQ and the Positive and Negative Affect Schedule PANAS Participants will then be exposed to two experimental trials presented in random order 1 smoking cues and 2 neutral cuesEach trial will last 20 minutes Participants will complete the TCQ and PANAS immediately and 10 and 20 minutes after cue exposure There will be a rest period between trials During the rest period the patient will complete other study assessments lasting 30-60 minutes After the assessments the patient will smoke again and then will complete the ratings and cue reactivity session for the second random condition at the same time points baseline immediately after 10 and 20 minutesTrials will begin with the experimenter placing a tray containing an opaque cover on a table in front of the participant In the smoking cue condition a pack of the participants preferred brand of cigarettes a lighter and an ashtray will be under the tray cover In the neutral cue condition a pack of unsharpened pencils and a pencil sharpener will be under the cover When instructed the participant will lift the cover on the tray In the smoking cue condition participants will take one cigarette out of the pack light it without puffing hold it and look at it At the end of the exposure period participants will extinguish the cigarette and replace the cover on the tray In the neutral cue condition participants will take one pencil out of the pack sharpen it hold it and look at it
The Iowa Gambling Task IGT is a computer-administered cognitive test that measures risk-reward decision-making Performance is impaired in patients with brain lesions in the ventromedial prefrontal cortex and in people who abuse alcohol cocaine marijuana methamphetamine opiates or multiple illegal drugs Patients with schizophrenia show normal IGT performance in some studies In particular adolescent patients and adults with catatonic schizophrenia show impairment One study found that IGT performance was significantly correlated with negative symptoms In this study subjects will take one of two equivalent versions of the IGT at study entry and study completion Each task session will take up to 30 minutes
The Tobacco Craving Questionnaire TCQ is a questionnaire designed to assess current tobacco craving Factor analysis of the 47-item TCQ resulted in four factors 1 emotionality smoking in anticipation of relief from withdrawal or negative mood 2 expectancy anticipation of positive outcomes from smoking 3 compulsivity an inability to control tobacco use and 4 purposefulness intention and planning to smoke for positive outcomes We will use a 12-item version of the TCQ comprising the three items from each factor that exhibited optimal within-factor reliability Cronbachs coefficient alpha and inter-item correlation The 12-item TCQ is as valid and reliable as the 47-item version TCQ items are rated on a scale from 1 strongly disagree to 7 strongly agre Factor scale scores for each participant are obtained by summing the three items
The PANAS is a 20-item scale in which 10 items describe positive mood enthusiastic interested determined excited inspired alert active strong proud attentive and 10 items describe negative mood scared afraid upset distressed jittery nervous ashamed guilty irritable hostile Each item is rated on a 5-point scale not at all a little moderately quite a bit extremely The PANAS shows high internal consistency and test-retest reliability Subjects can leave the study at any point If a participant experiences worsening of psychotic symptoms relative to the baseline BPRS an increase of 3 points or more OR an increase from a 5 to 7 on any one of the following BPRS items somatic concern conceptual disorganization hostility suspiciousness hallucinatory behavior or unusual thought content OR an increase of 2 or more on the CGI global severity OR the subject is judged to be entering an exacerbation of hisher illness by the treating clinician the patient will be discontinued from the study Other reasons for study termination include evidence of suicidal thinking or behavior or the development of or worsening of significant depressive symptoms score at any point in the study of 10 on the CDS or a 3 on the suicidal item complete cessation of eating and drinking for 24 hours pregnancy or blood pressure 16595 on three consecutive readings Once a participant is discontinued from the study for whatever reason completion ratings will be performed This includes laboratory tests rating scales and neurocognitive assessments
If a patient is prematurely terminated from the study they will resume their standard treatment At the end of the study patients will not have the option of continuing rimonabant because it is not FDA approved in the US Other interventions to improve weight and metabolic profiles will be discussed with the patients
Part II is a 16-week treatment phase subjects will be randomly assigned to either rimonabant or placebo for a 16-week period The medication will be given in unmarked capsules so that subjects will not know which medication they are receiving Only the pharmacist will know which medications subjects are receiving If an emergency occurs we will break the blind and give appropriate care This phase will require one visit every week and each visit may take up to 2-3 hours Subjects will be examined every week to check symptoms side effects Subjects symptoms will be evaluated using specially designed rating scales to ask about their daily experiences and feelings Evaluations that occur every 4 weeks may take about 2 hours At week 8 and week 16 laboratory tests will be repeated These tests will be compared to the baseline tests taken in Part I The end of study tests may take up to a total of 8 hours and may require 3-4 visits All testing is done for research purposes only and would not be performed if subjects were not participating in this study The total number of visits requested for this study will be 16-20 When subjects undergo neuropsychological testing we will examine their ability to learn and remember numbers and words to pay attention and to quickly perform motor tasks A motor task is when you use your hands to perform a task such as placing pegs into a piece of wood These tests will take about 2 hours and are done at the beginning of Part I and the end of Part II
Diet and exercise counseling will be held weekly for groups and individuals Sessions will focus on topics such as calories fat content portion control and determining a healthy weight We will request that participants maintain a food diary and exercise approximately 30 minutes3 times per week Subjects will be encouraged to attend the counseling sessions Transportation will be available for subjects If patients have not attended sessions they will be reeducated on the importance of attending sessions at the time of clinical ratingsSubjects will not be discharged from the study if they do not attend sessions
Randomization will be done using a permuted block randomization system and will be stratified by clozapineolanzapine treatment at baseline Treatment assignment order is random within each block and the total number of patients assigned to each treatment is equal The block sizes will vary between sizes 2 and 4 in random sequence The unblinded pharmacist will be notified of the treatment assignment and will inform unblinded pharmacists at the other sites about which study medication to dispense In an emergency research staff will be able to contact the pharmacy for unblinding Rimonabant will be available in 20 mg capsules with matched placebo
For outpatients study medication will be dispensed on a weekly basis plus two extra days of medication Inpatient subjects will receive their study medication daily from the Maryland Psychiatric Research Center MPRC Treatment Research Program TRP central pharmacy by a non-blind pharmacist The blind will be broken only if a medical emergency requires this information If this occurs the patient will be withdrawn from the study
All raters investigators and other staff will be blind to treatment assignment except for the pharmacist The pharmacist does not participate in assessing any of the primary symptom or side effect dependent variables and conveys no information about treatment assignment to patients or staff except in a medical emergency
Patients receiving 75 of their assigned medication will be considered compliant Outpatient compliance will be monitored through weekly pill counts and subject interviews Inpatient compliance will be monitored through inpatient medication records If a patient is observed to be non-compliant then this will be discussed with the patient and a plan formulated to bring the patient back within the compliance parameter For outpatients the plan may include contacting the patients caretaker or scheduling increased clinic visits These monitoring procedures have been used in other MPRC studies and have resulted in high levels of compliance Compliance patterns will be carefully monitored in each treatment group and will be described as part of any presentation of study results
Satiety is defined as the reduced willingness to eat after a meal not due to sickness or other extraneous factors and can be thought of as sensations of fullness A preload and a test meal will be used in this study The preload is a fixed amount of food given to the participant that is consumed in its entirety The test meal is a food or foods served following the preload in sufficient quantity so that the participant can eat as much as desired The amount consumed of the test meal is measured and used as an index of satiety Likert and Visual Analog Scales VAS will also be used
We will employ both the preload-test meal paradigm along with rating scales in the present study to investigate the effects of rimonabant on satiety signaling The testing will occur at baseline week 8 and week 16 to see if the effect changes All three testing occasions will be the same Participants will arrive after skipping breakfast and given a preload of 12 oz of Ensure 375 kcal served chilled in a large plastic cup Hunger ratings will be taken at baseline then every 30 minutes for 90 minutes After 60 minutes a test meal consisting of a pre-weighed bowl each of Reduced Fat Wheat Thins and Nilla Wafers will be given These will be kept in separate bowls so that exact caloric consumption can be measured The test meal will be served with 12 oz of water served chilled in a large plastic cup Satiety will be assessed by the quantity of Wheat Thins Nilla Wafers and water consumed and the difference between the hunger rating score from baseline for each time point
About 75 of subjects will be smokers Smoking measures will be performed on those with 8 ppm CO in expired breath and who smoke at least 5 cigarettes daily One approach to studying tobacco craving in the laboratory is to compare smokers responses when exposed to neutral and smoking-related in vivo cues In vivo or real-life cues are either presented by the experimenter or involve manipulation of materials by the participant For this study after smoking a cigarette at baseline 15 minutes before testing begins patients will be asked to complete the Tobacco Craving Questionnaire TCQ and the Positive and Negative Affect Schedule PANAS Participants will then be exposed to two experimental trials presented in random order 1 smoking cues and 2 neutral cuesEach trial will last 20 minutes Participants will complete the TCQ and PANAS immediately and 10 and 20 minutes after cue exposure There will be a rest period between trials During the rest period the patient will complete other study assessments lasting 30-60 minutes After the assessments the patient will smoke again and then will complete the ratings and cue reactivity session for the second random condition at the same time points baseline immediately after 10 and 20 minutesTrials will begin with the experimenter placing a tray containing an opaque cover on a table in front of the participant In the smoking cue condition a pack of the participants preferred brand of cigarettes a lighter and an ashtray will be under the tray cover In the neutral cue condition a pack of unsharpened pencils and a pencil sharpener will be under the cover When instructed the participant will lift the cover on the tray In the smoking cue condition participants will take one cigarette out of the pack light it without puffing hold it and look at it At the end of the exposure period participants will extinguish the cigarette and replace the cover on the tray In the neutral cue condition participants will take one pencil out of the pack sharpen it hold it and look at it
The Iowa Gambling Task IGT is a computer-administered cognitive test that measures risk-reward decision-making Performance is impaired in patients with brain lesions in the ventromedial prefrontal cortex and in people who abuse alcohol cocaine marijuana methamphetamine opiates or multiple illegal drugs Patients with schizophrenia show normal IGT performance in some studies In particular adolescent patients and adults with catatonic schizophrenia show impairment One study found that IGT performance was significantly correlated with negative symptoms In this study subjects will take one of two equivalent versions of the IGT at study entry and study completion Each task session will take up to 30 minutes
The Tobacco Craving Questionnaire TCQ is a questionnaire designed to assess current tobacco craving Factor analysis of the 47-item TCQ resulted in four factors 1 emotionality smoking in anticipation of relief from withdrawal or negative mood 2 expectancy anticipation of positive outcomes from smoking 3 compulsivity an inability to control tobacco use and 4 purposefulness intention and planning to smoke for positive outcomes We will use a 12-item version of the TCQ comprising the three items from each factor that exhibited optimal within-factor reliability Cronbachs coefficient alpha and inter-item correlation The 12-item TCQ is as valid and reliable as the 47-item version TCQ items are rated on a scale from 1 strongly disagree to 7 strongly agre Factor scale scores for each participant are obtained by summing the three items
The PANAS is a 20-item scale in which 10 items describe positive mood enthusiastic interested determined excited inspired alert active strong proud attentive and 10 items describe negative mood scared afraid upset distressed jittery nervous ashamed guilty irritable hostile Each item is rated on a 5-point scale not at all a little moderately quite a bit extremely The PANAS shows high internal consistency and test-retest reliability Subjects can leave the study at any point If a participant experiences worsening of psychotic symptoms relative to the baseline BPRS an increase of 3 points or more OR an increase from a 5 to 7 on any one of the following BPRS items somatic concern conceptual disorganization hostility suspiciousness hallucinatory behavior or unusual thought content OR an increase of 2 or more on the CGI global severity OR the subject is judged to be entering an exacerbation of hisher illness by the treating clinician the patient will be discontinued from the study Other reasons for study termination include evidence of suicidal thinking or behavior or the development of or worsening of significant depressive symptoms score at any point in the study of 10 on the CDS or a 3 on the suicidal item complete cessation of eating and drinking for 24 hours pregnancy or blood pressure 16595 on three consecutive readings Once a participant is discontinued from the study for whatever reason completion ratings will be performed This includes laboratory tests rating scales and neurocognitive assessments
If a patient is prematurely terminated from the study they will resume their standard treatment At the end of the study patients will not have the option of continuing rimonabant because it is not FDA approved in the US Other interventions to improve weight and metabolic profiles will be discussed with the patients
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None