Metformin and Lorcaserin for Weight Loss in Schizophrenia
Phase: PHASE4
Conditions: Schizophrenia, Schizoaffective Disorder, Overweight
Sponsor: University of North Carolina, Chapel Hill

 
 
MEtformin and Lorcaserin for WeighT Loss 
in People with Schizophrenia 
(MELT) 
 
 
 
 
 
Clinical Protocol 
 
 
 
 
 
Version 7.0 
Protocol Date:  March 20, 2019 
NCT#:  NCT02796144 
 
 
 

CONFIDENTIAL 
This document is a confidential communication of the University of North Carolina at Chapel Hill 
 
 
 
Clinical Protocol 
 
 
MEtformin and Lorcaserin for WeighT Loss in 
People with Schizophrenia (MELT) 
 
 
 
 
 
Version 7.0 
March 20, 2019 
 
 
L. Fredrik Jarskog, MD 
Principal Investigator 
University of North Carolina at Chapel Hill (UNC-CH) 
Telephone: 919-843-7683 
Facsimile: 919-445-0273 
 
Scott Stroup, MD, MPH 
Site Principal Investigator 
New York State Psychiatric Institute (NYSPI) 
Department of Psychiatry, Columbia University 
 
Co-Investigators 
Marian Sue Kirkman, MD, UNC-CH 
Anastasia Ivanova, PhD, UNC-CH 
Kai Xia, PhD, UNC-CH 
Kimberly A. Brownley, PhD, UNC-CH 
 
This study is sponsored by the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
 
Protocol v 1.0 
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TABLE OF CONTENTS 
 
1. 
SPECIFIC AIMS ................................................................................................................. 6 
2. 
BACKGROUND AND SIGNIFICANCE ............................................................................... 7 
3. 
RESEARCH DESIGN AND METHODS .............................................................................10 
3.1. 
OVERVIEW ...............................................................................................................10 
3.2. 
SUBJECTS ................................................................................................................11 
3.2.1. 
Inclusion Criteria ................................................................................................11 
3.2.2. 
Exclusion Criteria ...............................................................................................12 
3.2.3. 
Diagnostic Criteria ..............................................................................................13 
3.3. 
ASSESSMENT OF DATA ..........................................................................................13 
3.3.1. 
Specific Aims .....................................................................................................13 
3.3.2. 
Other Outcomes ................................................................................................13 
3.4. 
RANDOMIZATION METHOD ....................................................................................14 
3.5. 
PHARMACOLOGIC TREATMENTS ..........................................................................14 
3.5.1. 
Dosing of Study Medications ..............................................................................14 
3.5.2. 
Treatment Group Assignment ............................................................................15 
3.5.3. 
Concomitant and Adjunctive Medications ...........................................................15 
3.5.4. 
Prohibited and Restricted Therapies During the Study .......................................15 
3.5.4.1. 
Precautions ....................................................................................................16 
3.5.5. 
Discontinuation from Study Treatment ...............................................................16 
3.5.6. 
Drug Supply and Administration .........................................................................17 
3.5.6.1. 
Storage and Inventory Management ..............................................................17 
3.5.6.2. 
Accountability .................................................................................................17 
3.6. 
BEHAVIORAL TREATMENTS ...................................................................................17 
3.7. 
STUDY VISITS ..........................................................................................................18 
3.8. 
PROCEDURES BY VISIT ..........................................................................................18 
3.8.1. 
Fasting Laboratory Visits ....................................................................................18 
3.8.2. 
Screening Visit ...................................................................................................18 
3.8.3. 
Baseline Visit (Visit 0) ........................................................................................19 
3.8.4. 
Visit 1 and 2 (Weeks 1 and 2) ............................................................................20 
3.8.5. 
Visit 3 (Week 4) .................................................................................................20 
3.8.6. 
Visit 4 (Week 6) .................................................................................................20 
3.8.7. 
Visit 5 (Week 8) .................................................................................................21 
3.8.8. 
Visit 6 (Week 10)................................................................................................21 
3.8.9. 
Visit 7 (Week 12)................................................................................................21 
3.8.10. 
Visit 8 (Week 16)................................................................................................22 
3.8.11. 
Visit 9 (Week 20)................................................................................................22 
3.8.12. 
Visit 10 (Week 24) ..............................................................................................22 
3.8.13. 
Visit 11 (Week 28) ..............................................................................................23 
3.8.14. 
Visit 12 (Week 32) ..............................................................................................23 
3.8.15. 
Visit 13 (Week 36) ..............................................................................................24 
3.8.16. 
Visit 14 (Week 40) ..............................................................................................24 
3.8.17. 
Visit 15 (Week 44) ..............................................................................................24 
3.8.18. 
Visit 16 (Week 48) ..............................................................................................25 
3.8.19. 
Visit 17 (Week 52) or Discontinuation Visit (if patient is discontinuing the 
assigned treatment condition early)....................................................................................25 
3.8.20. 
Unscheduled Visits ............................................................................................26 
3.9. 
DETAILS OF PROCEDURES ....................................................................................26 
3.9.1. 
Study Materials ..................................................................................................26 
3.9.2. 
Structured Clinical Interview for DSM-IV (SCID) ................................................27 

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3.9.3. 
Physical Examination .........................................................................................27 
3.9.3.1. 
Vital Signs ......................................................................................................27 
3.9.3.2. 
Height ............................................................................................................27 
3.9.3.3. 
Body Weight...................................................................................................27 
3.9.3.4. 
Body Mass Index (BMI) ..................................................................................28 
3.9.4. 
Clinical Global Impression Scale (CGI) ..............................................................28 
3.9.5. 
Substance Use Scale .........................................................................................28 
3.9.6. 
Adverse Event/Side Effects Form ......................................................................28 
3.9.7. 
Concomitant/Adjunctive Medications..................................................................28 
3.9.8. 
Study Medication Adherence .............................................................................28 
3.9.9. 
Behavioral Treatment Adherence .......................................................................28 
3.9.10. 
Laboratory Test Assessments ............................................................................29 
3.9.11. 
Alcohol Use Questionnaire (AUQ) ......................................................................29 
3.9.12. 
Brief Psychiatric Rating Scale (BPRS) ...............................................................29 
3.9.13. 
Columbia Suicide Severity Rating Scale (C-SSRS) ............................................30 
3.9.14. 
Eating Disorder Examination Questionnaire (EDE-Q) ........................................30 
3.9.15. 
Three-Factor Eating Questionnaire (TFEQ) .......................................................30 
3.9.16. 
Food Craving Inventory (FCI) .............................................................................30 
3.9.17. 
Dual-Energy X-ray Absorptiometry (DXA) ..........................................................30 
3.9.18. 
Accelerometry ....................................................................................................30 
3.9.19. 
24-hour dietary recall assessment .....................................................................30 
4. 
DISCUSSION OF STUDY DESIGN AND APPROACH .....................................................31 
5. 
STUDY MONITORING AND OVERSIGHT ........................................................................32 
5.1. 
SITE MONITORING ..................................................................................................32 
5.2. 
RECORD RETENTION .............................................................................................32 
6. 
SAFETY AND ADVERSE EVENTS ...................................................................................32 
6.1. 
ADVERSE EVENTS ..................................................................................................32 
6.1.1. 
Serious Adverse Events .....................................................................................33 
6.1.2. 
Death .................................................................................................................34 
6.1.3. 
Pregnancy..........................................................................................................34 
6.1.4. 
Reporting of Serious Adverse Events .................................................................34 
6.2. 
DATA SAFETY MONITORING BOARD.....................................................................35 
7. 
STATISTICAL ANALYSES ...............................................................................................36 
7.1. 
ANALYSIS POPULATIONS .......................................................................................36 
7.1.1. 
Safety Population ...............................................................................................36 
7.1.2. 
Efficacy Evaluable Population ............................................................................37 
7.1.3. 
Per-Protocol Population .....................................................................................37 
7.2. 
STATISTICAL CONSIDERATIONS ...........................................................................37 
7.2.1. 
Power and Sample Size Calculations: ................................................................37 
7.2.2. 
Specific Aim #1 ..................................................................................................38 
7.2.3. 
Specific Aim #2 ..................................................................................................38 
7.2.4. 
Specific Aim #3 ..................................................................................................38 
7.2.5. 
Missing Data ......................................................................................................38 
8. 
HUMAN SUBJECTS RESEARCH .....................................................................................38 
8.1. 
PROTECTION OF HUMAN SUBJECTS ....................................................................38 
8.2. 
RISKS AND BENEFITS .............................................................................................39 
8.2.1. 
Metformin Risks .................................................................................................39 
8.2.1.1. 
Lorcaserin Risks ............................................................................................40 
8.2.1.2. 
Moderation of Risk .........................................................................................42 
8.2.2. 
Potential Benefits to Participants ........................................................................42 

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8.2.3. 
Risk/benefit ratio ................................................................................................43 
8.2.4. 
Subject Payments ..............................................................................................44 
8.2.5. 
Costs to Patients ................................................................................................44 
8.3. 
INSTITUTIONAL REVIEW BOARD (IRB) CONSIDERATIONS .................................44 
8.4. 
INFORMED CONSENT .............................................................................................44 
8.5. 
PARTICIPANT CONFIDENTIALITY ..........................................................................44 
8.5.1. 
Certificate of Confidentiality ...............................................................................45 
9. 
LIST OF ABBREVIATIONS ...............................................................................................45 
10. LITERATURE CITED.........................................................................................................46 
WHITE MA, WHISENHUNT BL, WILLIAMSON DA, GREENWAY FL, NETEMEYER RG., 
2002. DEVELOPMENT AND VALIDATION OF THE FOOD-CRAVING INVENTORY. OBESITY 
RESEARCH. 2(10), 107-114. ....................................................................................................48 
 
Appendix 1 
Schedule of Events Baseline to Week 24 .................................................. 49
Appendix 2 
Schedule of Events Week 28 to End of Study .......................................... 518
Appendix 3 
DSM-V Criteria for Schizophrenia .............................................................. 51
Appendix 4 
DSM-IV-TR Criteria for Schizoaffective Disorder ....................................... 52
Appendix 5 
BMI Calculation Chart ................................................................................ 53
Appendix 6 
Definition of an SAE ................................................................................... 54
Appendix 7 
A Guide to Interpreting the Causality Question .......................................... 56
Appendix 8 
Behavioral Treatment Intervention ............................................ ………..…57 
 
 
 
 

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
 
1. 
SPECIFIC AIMS 
Metformin has emerged as a safe and modestly effective intervention for antipsychotic-
associated weight gain, with several meta-analyses demonstrating mean weight loss of 3 kg in 
studies ranging from 12 to 24 weeks. Among FDA-approved weight loss agents, there have 
been few pharmacological options for people with schizophrenia because of the risk for 
psychotic exacerbation associated with sympathomimetic drugs which characterize a number of 
these agents. Lorcaserin is a 5-HT2C agonist that has recently been approved for weight loss 
and represents a potentially important option for people with schizophrenia since it does not 
have sympathomimetic properties. The current study will examine the effectiveness of two 
novel weight loss approaches in schizophrenia – lorcaserin monotherapy and 
lorcaserin/metformin combination treatment – compared to placebo. 
This study will enroll 110 overweight people with schizophrenia or schizoaffective 
disorder who have a BMI> 27 and are treated with one or a combination of two antipsychotic 
medications. Participants will be randomized to receive 52 weeks of lorcaserin/metformin 
combination treatment, lorcaserin monotherapy or placebo. All participants will receive a 
manualized behavioral intervention aimed at increasing physical activity and improving their 
diets. 
Specific Aims: 
1. Aim #1: Determine the efficacy of lorcaserin/metformin combination treatment and 
lorcaserin monotherapy on body weight in overweight people with schizophrenia. 
a. Primary hypothesis:  
Lorcaserin/metformin combination treatment will demonstrate greater 
weight loss compared to placebo. 
b. Secondary hypothesis:   
Lorcaserin monotherapy will demonstrate greater weight loss than placebo. 
 
2. Aim #2: Determine the efficacy of lorcaserin/metformin and lorcaserin 
monotherapy compared to placebo for improving lipid and glucose metabolism. 
a. Lorcaserin monotherapy and lorcaserin/metformin combination treatment 
will demonstrate greater improvement in markers of lipid and glucose 
metabolism compared to placebo. 
 
3. Aim #3:  
a. Determine the safety and tolerability of lorcaserin monotherapy and 
lorcaserin/metformin 
combination 
treatment 
using 
adverse 
event 
monitoring. 

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
Protocol v 1.0 
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b. Determine the effect of lorcaserin/metformin and lorcaserin monotherapy 
on the appetite regulating hormones. Peripheral leptin, total and acylated 
ghrelin, PYY3-36 and GLP-1 levels will be measured. 
c. Determine the effect of lorcaserin monotherapy and lorcaserin/metformin 
combination treatment on body composition, and energy intake and 
expenditure.  
 
Dual X-ray absorptiometry will be performed at baseline and end of 
study in a subset of subject to assess the effects of study 
interventions on fat storage. 
 
Appetite rating scales and 24-hour food recall assessments will be 
administered to examine the effect of lorcaserin monotherapy and 
lorcaserin/metformin combination treatment on appetite regulation 
and energy intake compared to placebo.  
 
Accelerometry will be performed to examine the effects of each 
treatment on energy expenditure. 
2. 
BACKGROUND AND SIGNIFICANCE 
Lifespans in patients with schizophrenia are reduced by approximately 20% (Hennekens 
et al., 2005; Tiihonen et al, 2009). Cardiovascular disease (CVD) represents the major natural 
cause of this excess mortality; it is estimated that the relative risk of CVD is about twice that of 
the general population and that patients with schizophrenia are twice as likely to die from CVD 
(Brown et al., 2000; Daumit et al., 2008; Henderson et al., 2005). Obesity is an important 
modifiable risk factor for CVD that is highly prevalent in people with schizophrenia. A recent 
meta-analysis of 77 studies (N=25,692) found 49.4% of people with schizophrenia met criteria 
for obesity (Mitchell et al., 2013). Furthermore, conditions for which obesity is an important risk 
factor including diabetes mellitus and hypertension are both 2-2.5 times as common in persons 
with schizophrenia compared to the general population (Dixon et al., 2000, De Hert et al. 2011). 
Many factors contribute to weight gain in patients with schizophrenia, among which 
antipsychotic medications are primary contributors. Weight gain from antipsychotics is often 
rapid and most noticeable in people with new onset psychosis, but weight gain commonly 
continues chronically as patients continue treatment. For example, in people with chronic 
schizophrenia, the 18 month Clinical Antipsychotic Trials of Intervention Effectiveness (CATIE) 
study found >7% of baseline weight gain for following antipsychotics: olanzapine 30%, 
quetiapine 16%, risperidone 14%, perphenazine 12%, and ziprasidone 7% (Lieberman et al., 
2005). 
Behavioral Weight Loss Interventions: 
Given the high prevalence of obesity in people with schizophrenia in the U.S., research 
on interventions for weight loss in this population is relatively sparse. In a 14-week study of 72 
overweight patients with schizophrenia or schizoaffective disorder, subjects were randomized to 
20 sessions of group-based behavioral treatment or usual medical care (Brar et al., 2005).  
Mean weight loss in the behavioral intervention group was 2.0 kg while the usual care group lost 

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
Protocol v 1.0 
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1.0 kg. While baseline to end-of-study weight loss was significant for each group, the between-
group difference was not significant and the absolute weight loss achieved in each group was 
modest. In a recent 18-month study, 291 overweight people (BMI>25) with serious mental illness 
(~60% with schizophrenia/schizoaffective disorder) receiving care in outpatient psychiatric 
rehabilitation programs were randomized to individualized weight-management and exercise 
sessions versus standard care. The active treatment group achieved a significant between-
group 3.2 kg weight loss over 18 months, demonstrating a potentially meaningful but still modest 
effect on weight. 37.8% of active treatment participants lost >5% of their baseline weight as 
compared to 22.7% of those in the control group (Daumit et al., 2013). Taken together, these 
data suggest that while behavioral interventions alone can achieve modest weight loss, the 
outcomes are generally not sufficient to achieve the needed weight loss in this population. 
Antipsychotic Switching for Weight Loss: 
Switching from an antipsychotic with a higher liability for causing weight gain to one with 
a lower liability for causing weight gain is another strategy that has been studied in overweight 
people with schizophrenia. In a 6-month study, 215 overweight people (BMI>27) with 
schizophrenia were randomized to either stay on their current antipsychotic (olanzapine, 
risperidone or quetiapine) or to switch to aripiprazole (Stroup et al., 2011). The differential weight 
change between switchers and stayers was -2.9 kg in favor of switching to aripiprazole. 
Although switching was generally safe and not associated with an excess number of psychotic 
relapses, changing antipsychotics must be undertaken with considerable care and close clinical 
monitoring. Furthermore, there are patients for whom a switch may be associated with an 
unacceptable risk of psychotic exacerbation, such as those stabilized on clozapine or other 
antipsychotics from which they have previously decompensated following an antipsychotic 
switch. For such patients, and for others who do not wish to change antipsychotics or who have 
already switched antipsychotics without achieving acceptable weight change, adjunctive 
treatment would be preferable. 
Adjunctive Pharmacological Interventions for Weight Loss 
Overview: Pharmacological options for weight loss for people with schizophrenia are limited. 
Among FDA-approved weight loss agents, phentermine, diethylpropion and the recently 
approved combination treatment phentermine/topiramate (Qsymia™) have sympathomimetic 
properties that raise the risk of psychotic exacerbation in people with schizophrenia due to the 
association of such drugs with psychotic symptoms. Their use in schizophrenia has not been 
systematically studied and, given the risk of worsening psychosis, must be used with 
considerable caution. Orlistat, a peripherally acting pancreatic lipase inhibitor with a high 
incidence of gastrointestinal side effects, has generally been associated with limited efficacy for 
weight loss and a 16-week study of orlistat in overweight people with schizophrenia did not lead 
to significant weight loss compared to placebo (Joffe et al., 2008). Lorcaserin (Belviq™), another 
recently FDA-approved weight loss agent, is a 5-HT2C agonist, suggesting a more favorable 

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
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risk/benefit ratio for patients with psychotic disorders compared to sympathomimetics, but to 
date it has not been studied in people with schizophrenia.  
Several agents without an FDA-approved indication for weight-loss have been studied for 
weight loss in schizophrenia. Several recent meta-analyses found that metformin and topiramate 
are associated with significant weight loss in overweight people with chronic psychotic disorders. 
Topiramate has significant side effects, especially cognitive impairment, that often makes it 
unsuitable for people with psychotic disorders. Metformin, however, is generally well-tolerated 
and has been associated with ~3 kg weight reduction across 10 studies (757 total subjects). This 
is also consistent with metformin-associated weight loss that our group demonstrated in a 16-
week study of overweight and obese outpatients with chronic schizophrenia (Jarskog et al., 
2013). 
Thus, among adjunctive pharmacological interventions for weight loss that have been 
studied in overweight people with schizophrenia, metformin represents the agent with the most 
solid evidence-base, while lorcaserin has a novel mechanism but has not been studied in this 
population. Taken individually, metformin and lorcaserin both demonstrate relatively modest 
effects on weight, around 3 kg. However, treatment using drugs with different mechanisms of 
action can lead to significantly greater weight loss in combination than either agent alone. This 
has been demonstrated with, for example, the combination of topiramate and phentermine, 
which provides a rationale for testing other drug combinations with better safety profiles in 
people with schizophrenia.  
Lorcaserin: 
Lorcaserin (Belviq™), a 5-HT2C agonist for weight loss, was FDA approved in 2012. 
Lorcaserin binds 5-HT2C receptors expressed in hypothalamic pro-opiomelanocortin (POMC) 
neurons which in turn leads to melanotropin- release and exerts appetite-suppressing effects 
via stimulation of melanocortin receptor 4 (MC4R). It remains unknown how lorcaserin affects 
key appetite-regulating hormones such as leptin, ghrelin, GLP-1 or PYY. Three large placebo-
controlled studies have demonstrated weight-loss efficacy for lorcaserin. In the 2-year BLOOM 
trial, 3182 overweight/obese adults (BMI: 27-45) were randomly assigned to lorcaserin 10 mg 
BID or placebo (Smith et al., 2010). At 52 weeks, 47.5% of patients taking lorcaserin had lost 
>5% of their baseline body weight compared to 20.3% of patients taking placebo. Associated 
mean weight change for lorcaserin was -5.8 kg compared to -2.2 kg for placebo. The differential 
advantage for lorcaserin over placebo was 3.6 kg. Similar results were documented in the 
BLOSSOM (Fidler et al., 2011) and BLOOM-DM (O’Neil et al., 2012) studies. 
Metformin: 
Metformin is a well-tolerated biguanide antihyperglycemic approved for type II diabetes 
mellitus. Metformin normalizes blood glucose levels by blocking hepatic gluconeogenesis and 
increasing peripheral insulin sensitivity. Since metformin does not increase insulin production, 
hypoglycemia is a rare side effect and it can typically be taken safely by people without diabetes 
(Kirpichnikov et al., 2002). Metformin is known to cause modest weight loss in persons with pre-

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Protocol v 1.0 
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diabetes and with type II diabetes (DeFronzo and Goodman, 1995; Knowler et al., 2002). 
Mechanisms contributing to metformin-induced weight loss are thought to include hypothalamic 
appetite suppression as well as slowing of gastric emptying related to stimulation of glucagon-
like peptide-1 (GLP-1) secretion (Kirpichnikov et al., 2002; Mannucci et al., 2001). 
Meta-analyses of studies of metformin to produce weight loss or prevent antipsychotic-
induced weight gain in non-diabetic patients with schizophrenia have demonstrated mean weight 
loss of ~3 kg with metformin across available studies, ranging from 12-24 weeks duration 
(Correll et al., 2013; Mizuno et al., 2014). The study by Jarskog et al. (2013) demonstrated a 
generalizable effect of metformin on weight loss in overweight and obese non-diabetic 
psychiatrically stable adult outpatients with chronic schizophrenia or schizoaffective disorder. 
Overweight patients with schizophrenia have been consistently found to have increased 
circulating leptin levels (Jin et al, 2008). Increased circulating levels of orexigenic ghrelin 
hormone in long-term antipsychotic treatment studies have also been found in patients who 
gained weight while taking antipsychotics with a high weight gain liability (Jin et al, 2008). 
Notably, no appetite-regulating hormones have been measured in prior studies of metformin for 
weight loss in schizophrenia. The current proposal will measure leptin, ghrelin (total and 
acylated), GLP-1 and PYY at baseline, 6 months and 12 months to gain insight into how key 
appetite regulatory hormones may contribute to weight loss by examining their relationships to 
body weight, fat distribution, and measures of appetite, energy intake and energy expenditure. 
3. 
RESEARCH DESIGN AND METHODS 
3.1. 
OVERVIEW 
This study will be conducted over a 4-year period at four clinical sites – UNC-Chapel Hill, 
Columbia University, Carolina Behavioral Care, and Augusta University. This is a double-blind, 
randomized study of 52 weeks of LOR/MET combination treatment and lorcaserin monotherapy 
compared to placebo in overweight people with schizophrenia. See Table 2 for timeline, Figure 
2 for study design. 
Study startup activities include obtaining IRB approval, preparation of study medications 
(NYSPI/Columbia University Investigational Drug Services), and establishing the electronic 
database (REDCap). Subject enrollment will begin ~3 months after the start of the grant. 
Enrollment will continue for ~30 months (end of 3Q, YR 3) so that the last study subject enrolled 
will finish at end of 3Q, YR4. Data analysis will begin during 3Q, YR4 and will be completed 
during 4Q, YR4. Manuscript preparation will occur 4Q, YR4.  
Table 2. Overview and Timeline. 
Study Activity 
YEAR 1 
YEAR 2 
YEAR 3 
YEAR 4 
1Q 2Q 3Q 
4Q 
1Q 2Q 3Q 
4Q 
1Q 2Q 3Q 
4Q 
1Q 2Q 3Q 
4Q 
Study startup 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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3.2. 
SUBJECTS 
Approximately 110 subjects will be recruited at four clinical sites (UNC Chapel Hill, Columbia 
University, Carolina Behavioral Care, and Augusta University) over a 30-month period, with the 
goal of randomizing 90 subjects. At UNC Hospitals in Chapel Hill, NC, ~650 outpatients with 
chronic psychotic disorders (80% of whom have schizophrenia or schizoaffective disorder) 
receive care in the Schizophrenia Treatment and Evaluation Program (STEP). A newly 
established UNC-STEP clinic in Raleigh, NC has an additional 500 schizophrenia patients. Dr. 
Jarskog runs a half-day clinic at both locations. He is also Research Director of the North 
Carolina Psychiatric Research Center, which is integrated into the STEP clinic infrastructure and 
thereby has full access to these patient populations. Dr. Stroup will recruit subjects through the 
Lieber Schizophrenia Research Clinic at the New York State Psychiatric Institute (NYSPI).  In 
addition he has access to ~1,100 patients with schizophrenia spectrum disorders in the 
Washington Heights Community Service Clinics, which serve the catchment area in New York 
City surrounding Columbia/NYSPI. Both of these sites successfully recruited for the METS 
study, which had similar inclusion/exclusion criteria.  
3.2.1. Inclusion Criteria 
1. Outpatients with a diagnosis of schizophrenia or schizoaffective disorder as defined by 
DSM-IV-TR criteria (see Appendix 3 and Appendix 4) and confirmed by the Structured 
Clinical Interview for DSM-IV (SCID).  
2. Duration of psychotic illness must be greater than one year, as defined by having initiated 
antipsychotic treatment at least 1 year prior to study enrollment. 
3. Patients must be 18-65 years of age. 
4. Patients must demonstrate adequate decisional capacity to make a choice about 
participating in this research study and must provide written informed consent to participate. 
5. BMI  27 kg/m2  
6. Currently treated with one or a combination of two FDA-approved antipsychotic medications 
(typical or atypical antipsychotics) AND on that drug regimen for at least 2 months prior to 
study entry (with stable dosages for at least 1 month). 
7. Concomitant medications are allowed if agents and doses are unchanged for at least 1 
month prior to study entry and if these medications are not among those excluded in the 
Exclusion Criteria. 
8. Women who can become pregnant must be using an adequate method of contraception to 
avoid pregnancy throughout the study and for up to 4 weeks after the study in such a 
manner that the risk of pregnancy is minimized. Acceptable methods include oral, injectable 
Recruitment/enrollment 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Subject participation 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Data analysis 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Manuscript preparation 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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or implanted contraceptives, intrauterine devices or barrier methods such as condoms, 
diaphragm and spermicides. Women who can become pregnant must have a negative 
serum pregnancy test at the Screening Visit. 
3.2.2. Exclusion Criteria 
1. Inpatient status 
2. Clinical Global Impression Severity (CGI-S) score >6  
3. Current treatment with more than 2 antipsychotics 
4. HbA1c>6.5% 
5. Diagnosis of diabetes mellitus or current treatment with insulin or oral hypoglycemics 
6. Current or prior treatment with metformin within the past 3 months 
7. Current or prior treatment with lorcaserin within the past 3 months 
8. Current or prior treatment with a 5-HT2B agonist (e.g. cabergoline) within the past 45 days 
due to potential risk for heart valve defects 
9. Current treatment with two or more antidepressants 
 
10. Current treatment with a single antidepressant prescribed in excess of the maximum 
approved dose 
 
11. Current treatment with  monoamine oxidase inhibitor (MAOI) class of antidepressants 
(isocarboxazid, phenelzine, selegiline, tranylcypromine) 
 
12. Concurrent treatment with any of the following pro-serotonergic drugs: meperidine, 
buspirone, dextromethorphan, triptans, tramadol, ritonavir, tryptophan, ginseng, St. John’s 
wort 
13. Diagnosis of congestive heart failure 
14. Uncorrected thyroid disorder 
15. Renal impairment as evidenced by estimated glomerular filtration rate (eGFR) <50 
mL/min/1.73 m2 
16. Hepatic disease (ALT, AST, or GGT > 2 times upper limit of normal (ULN), total bilirubin > 
1.2 times ULN) 
17. Metabolic acidosis (serum CO2 <20 mEq/L) 
18. Known hypersensitivity to metformin or lorcaserin 
19. Women who are pregnant or breastfeeding 
20. Recent (in the past 30 days) or scheduled radiological studies involving iodinated contrast 
material 
21. Alcohol abuse/dependence as determined by SCID within the past month 
22. Other serious and unstable medical condition in the judgment of the investigator 
23. DSM-IV diagnosis of mental retardation or dementia 
24. Any medication (prescription or non-prescription) used for weight loss must have been 
discontinued 3 months prior to study entry. 

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3.2.3. Diagnostic Criteria 
Diagnosis will be determined using the Structured Clinical Interview for DSM-IV Axis I Disorders 
(SCID-P) (Spitzer, Williams et al. 1992).  The SCID will be used to confirm diagnostic inclusion 
criteria and assess for co-morbid psychiatric diagnoses.   
3.3. 
ASSESSMENT OF DATA 
Patient outcomes will be evaluated at least monthly during study visits as outlined in the Schedule 
of Events (Appendix 1 and Appendix 2). Clinical care will be provided during weekly visits during 
the first two weeks of the study and more frequently as indicated.   
Outcome measures will be obtained from a variety of sources, including direct measurement of 
patient weight, laboratory tests, patient self-report, clinician ratings and ratings by trained study 
personnel.  All investigator-rated scales will be performed by qualified raters. 
3.3.1. Specific Aims 
 
1. In a 52-week, double-blind, randomized trial, determine the effect of LOR/MET 
combination treatment compared to placebo on weight change in overweight people 
with schizophrenia. The efficacy of LOR monotherapy compared to placebo for weight 
loss will be assessed as secondary outcomes. 
2. Determine the effect of LOR/MET and LOR compared to placebo on measures of lipid 
and glucose metabolism in overweight people with schizophrenia. Measures of lipid 
(total cholesterol, HDL, LDL, triglycerides) and glucose (fasting plasma glucose, 
HbA1c, insulin) metabolism will be analyzed using a mixed longitudinal model over 52 
weeks.  
3. Determine the effect of LOR/MET and LOR on appetite regulating hormones, body 
composition, and energy intake and expenditure. Measures of appetite regulating 
hormone levels, energy intake and energy expenditure, as well as change in fat mass, 
lean mass and fat percentage will be analyzed using a mixed longitudinal model over 
52 weeks. 
 
3.3.2. Other Outcomes 
 
 
Placebo-controlled weight change in LOR monotherapy across 52 weeks,  
 
Number of subjects that achieve >5% weight loss compared to baseline for each 
treatment 

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 
Adverse events will be assessed using a structured adverse event checklist that will 
list expected side effects associated with lorcaserin and metformin. Results will be 
tabulated. Serious adverse events will be collected.  
 
All subjects will have the Brief Psychiatric Rating Scale (BPRS), Clinical Global 
Impression – Severity (CGI-S) scale and Columbia Suicide Severity Rating Scale (C-
SSRS) performed at each visit to evaluate for any evidence of psychiatric 
decompensation.  
3.4. 
RANDOMIZATION METHOD 
Study treatments will be randomly assigned using a system set up by our biostatistician, Dr. 
Anastasia Ivanova. Prior to the start of the trial, Dr. Ivanova will generate a randomization plan. 
Randomization will be stratified by site.  
 
3.5. 
PHARMACOLOGIC TREATMENTS 
The following medications are used in this trial: 
 
Metformin supplied in dosages of 500 mg  
Lorcaserin supplied in dosages of 10 mg 
Placebo 
3.5.1. Dosing of Study Medications 
Subjects will be randomized to 3 groups, see Figure 1. 
 
Lorcaserin and Metformin-  
o Max dose of 10mg BID of Lorcaserin and max dose of 1,000mg BID of Metformin 
 
Lorcaserin-  
o Max dose of 10mg BID 
 
Placebo 
Subjects will be randomized to receive lorcaserin 10mg qAM in the MET/LOR and LOR arms or 
PBOL qAM. If tolerated, the dose will be titrated up to 10 mg BID at week 1 for 4 weeks. Subjects 
who tolerate the initial 4 weeks of treatment, in the LOR/MET arm will begin MET 500mg BID at 
week 4, while the LOR arm and placebo arm will begin PBOM. At week 6, the LOR/MET arm will 
have the MET dose increased to 1,000 mg qAM and 500 mg qHS, with corresponding increases 
in the PBOM in the other two arms. At week 8 (Visit 6), in the LOR/MET arm, MET is increased to 
1,000 mg (2 capsules) BID, with corresponding increases in PBOM in the other two arms. If this is 
well tolerated, then subjects continue LOR/MET, LOR/PBOM, or PBOL/PBOM to the end of the 
study at week 52 (EOS/Visit 17). 

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3.5.2. Treatment Group Assignment 
After a screening period that is not to exceed 28 days (i.e. screening visit through baseline visit), 
patients who continue to meet entry criteria at the baseline visit will be randomized to one of the 
three treatment groups according to a computerized system.  
Treatment assignments will be governed by a fixed randomization schedule designed to allocate 
patients between lorcaserin/metformin, lorcaserin, and placebo in a 1:1:1 ratio. Within each site, 
approximately equal numbers of patients will be assigned to each treatment group. 
Randomization will be stratified by site across each of the 2 sites. 
3.5.3. Concomitant and Adjunctive Medications 
Concomitant medications are allowed if at stable dose for at least 1 month prior to study entry 
and if they are not on the prohibited list of therapies.  The addition of any medications during the 
study must be discussed with the PI.  The use of these medications and the indication must be 
documented using the Other Medications Record (OMR) form.   
3.5.4. Prohibited and Restricted Therapies During the Study 
Pro-serotonergic drugs pose an increased risk of serotonin syndrome when taken together with 
lorcaserin. Prohibited pro-serotonergic drugs include meperidine, buspirone, dextromethorphan, 
triptans, tramadol, ritonavir, cabergoline, tryptophan, ginseng, St. John’s wort. Treatment with 
insulin or any oral antihyperglycemic or hypoglycemic agent is not permitted. Certain drugs have 

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been found to increase metformin plasma or blood levels in healthy volunteers (furosemide, 
nifedipine, cimetidine) or present a theoretical risk of such an increase (cationic drugs). Cimetidine 
is a cationic drug that can raise metformin peak plasma levels by 60% in healthy controls, probably 
due to competition for shared renal tubular transport systems for elimination. Cimetidine and other 
cationic drugs (including amiloride, digoxin, morphine, procainamide, quinidine, quinine, 
ranitidine, triamterene, trimethoprim, or vancomycin) are permitted only with the permission of the 
Co-I (Dr. Kirkman) together with the PI (Jarskog). Furosemide and nifedipine can also increase 
peak plasma levels of metformin by 20% and require permission of Drs. Kirkman and Jarskog. 
3.5.4.1. 
Precautions 
The  patient’s  best  medical  interests should  guide  the  Investigator  in  the  management  of  
conditions  that  are preexisting or that develop during the study (i.e., intercurrent illnesses or 
AEs).  The use of all medications, for any indications, must be documented on the Other 
Medications Record (OMR). Medications that were given for any preexisting illness will be 
recorded on the Other Medications Record (OMR) at the Baseline Visit. Any changes to 
medications that are given for any preexisting conditions must be documented.  
Patients should not undergo any elective medical procedure without prior consultation with the 
Investigator. An elective procedure (minor surgery, dental surgery, orthopedic surgery, etc.) that 
might require hospitalization or anesthesia should be deferred until after the study whenever 
clinically appropriate. 
3.5.5. Discontinuation from Study Treatment 
Study treatment MUST be immediately discontinued for the following reasons:  
 
Withdrawal of informed consent (subject’s decision to withdraw for any reason) or if patient 
loses the ability to provide continued informed consent in the study 
 
Any clinical adverse event, clinical rating, laboratory abnormality or intercurrent illness 
which, in the opinion of the investigator, indicates that continued treatment with study 
therapy is not in the best interest of the subject  
 
Pregnancy  
 
Termination of the study 
Study treatment must be reevaluated for the following reason: 
 
Brief Psychiatric Rating Scale total score increase by > 20% compared to baseline will 
trigger a clinical evaluation to include the site’s PI. This may include the subject’s regular 
mental health provider, as needed. 
Pre-specified Discontinuation Criteria: 
1) Subject has gained >7 kg compared to baseline weight (V0) at any visit 
2) Subject is unwilling to continue taking study drug for any reason 
3) Clinical Global Impression-Severity scale (CGI-S) score >6 or worsening of CGI-S score 
by >2 points compared to baseline 
4) Evidence for new onset suicidal ideation, plan or evidence of self-harm based on 
Columbia Suicide Severity Rating Scale (C-SSRS) 

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5) eGFR <45 mL/min/1.73 m2 
6) ALT, AST, GGT >2.5xULN (upper limit of normal), total bilirubin >1.3xULN 
7) Serum CO2 <19 mEq/L 
8) Meets criteria for alcohol abuse or dependence 
 
3.5.6. Drug Supply and Administration 
Study medication will be over encapsulated so that study assignment will not be known to 
subjects or clinicians. 
3.5.6.1. 
Storage and Inventory Management 
All study drugs will be stored in a secure, limited access area at controlled room temperature. 
3.5.6.2. 
Accountability 
The investigator, his/her designee or an investigational drug pharmacist must maintain an 
adequate record of the receipt and distribution of all trial supplies. Trial drug prescription, 
dispensing and compliance will be captured on the case report forms and will be source-validated 
by study monitors. 
3.6. 
BEHAVIORAL TREATMENTS 
A behavioral treatment aimed at modifying cardiovascular risk factors, including weight, activity 
level, blood sugar, blood pressure, and lipids will be provided to all study participants (see 
Appendix 9.  This intervention will be provided by a trained clinician in individualized sessions at 
all study visits after the Baseline Visit.  After the first two sessions, interim telephone calls will be 
made between study visits to each participant to reinforce elements of the program and to answer 
questions. The intervention will use the principles of  “Behavioral Group-Based Treatment for 
Weight Reduction in Schizophrenia and Other Severe Mental Illnesses” developed by Rohan 
Ganguli, MD, and colleagues at the University of Pittsburgh. Nine individual sessions will each 
last approximately 30 minutes.  A rating of adherence to the behavioral treatment program will be 
made using the Behavioral Treatment Adherence Record at each session.  The topics of each 
session are as follows: 
Week 1:    Self-monitoring: Awareness of Body Weight and What One Eats 
Week 2:    Burning Calories by Exercise 
Week 3:    Phone reinforcement 
Week 4:    Controlling Urges to Overeat and Snack 
Week 5:    Phone reinforcement 
Week 6:    Burning calories by Using Energy 
Week 7:    Phone reinforcement 
Week 8:    Decreasing Food Cues to Overeat and Snack 
Week 9:    Phone reinforcement 
Week 10:  Developing good eating habits 
Week 11:  Phone reinforcement 
Week 12:  Self-control of overeating 
Week 14:  Phone reinforcement 
Week 16:  Changing snack habits 

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Week 18:  Phone reinforcement 
Week 20:  Revisit Self-monitoring: Awareness of Body Weight and What One Eats 
Week 22:  Phone reinforcement 
Week 24:  Revisit Burning Calories by Exercise 
Week 26:  Phone reinforcement 
Week 28:  Revisit Controlling Urges to Overeat and Snack 
Week 30:  Phone reinforcement 
Week 32:  Revisit Burning calories by Using Energy 
Week 34:  Phone reinforcement 
Week 36:  Revisit Decreasing Food Cues to Overeat and Snack 
Week 38:  Phone reinforcement 
Week 40:  Revisit Developing good eating habits 
Week 42:  Phone reinforcement 
Week 44:  Revisit Self-control of overeating  
Week 46:  Phone reinforcement 
Week 48:  Revisit Changing Snack habits 
Week 50:  Phone reinforcement 
Week 52:  Increasing success 
3.7. 
STUDY VISITS 
Subjects will attend visits at least once a month at which structured assessments will be 
conducted according to the study Schedule of Events in Appendix 1 and Appendix 2.  During the 
first two weeks of study treatment, all subjects will be assessed clinically at weekly Visits 1 and 2. 
3.8. 
PROCEDURES BY VISIT 
The required procedures and assessments for subject evaluation are outlined in the Schedule of 
Events in Appendix 1 and Appendix 2. 
All investigator-rated scales must be performed by qualified clinicians.  Every effort should be 
made to complete the required procedures and evaluations at the designated visits. 
3.8.1. Fasting Laboratory Visits 
Patients must be fasting (i.e., at least 8 hours without caloric intake) for the Screening Visit and 
Visits 7 and 10 or Visit 52/discontinuation visit.  Fasting laboratory tests are required for subjects 
to be randomized to study treatment. Study sites should call participants the day before study 
visits to remind them of the appointment and the need to fast.  Fasting is not required for laboratory 
tests for Visit 13. 
3.8.2. Screening Visit 
The purpose of the screening visit is to: 
 
Ensure that appropriate patients are entered into the trial; 
 
Determine that the patient meets eligibility criteria; 
 
Complete medical diagnosis screen 
 
Measure vital signs, height and weight 
 
Other Medications Record 

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 
Measure metabolic parameters including fasting laboratories (i.e., lipid profile, glucose, 
Hemoglobin A1C, insulin, and lipids, 2 hour OGTT) 
 
Blood draw for laboratory assessment 
 
Urine drug screen 
 
Collect specified demographic and medical data  
 
Assess each subject’s reliability and ability to participate in the ratings and the likelihood 
that the patient will follow the prescribed treatment regimen and protocol requirements; 
Screening evaluations consist of: 
 
Informed consent: study explanation, questions answered, consent form signed 
 
Psychiatric diagnostic evaluation using SCID modules A-E; 
 
Verification that all inclusion/exclusion criteria are met (see Section 3.2.1 and 3.2.2), 
including confirmation of medication eligibility 
 
General clinical evaluation; physical exam and medical history (to include all 
events/conditions within the last 2 years and all events /conditions of clinical significance 
or relevance to the study) 
 
Clinical Global Impressions-Severity (CGI-S)  
3.8.3. Baseline Visit (Visit 0) 
The patient will complete baseline evaluations at the baseline visit prior to randomization and prior 
to beginning study therapy.  The visit is to be scheduled within 28 days of the screening visit.   
The following assessments must be completed: 
 
Vital signs, weight (patient’s weight at this visit will constitute baseline weight) 
 
Other Medications Record 
 
Clinical Global Impressions-Severity (CGI-S)  
 
Clinician Alcohol Use Scale and Drug Use Scale (AUS/DUS) 
 
Alcohol Use Questionnaire 
 
BPRS (Brief Psychiatric Rating Scale) 
 
C-SSRS (Columbia Suicide Severity Rating Scale) 
 
EDE-Q (Eating Disorder Examination Questionnaire) 
 
TFEQ (Three-Factor Eating Questionnaire) 
 
FCI questionnaire (Food and Craving Inventory) 
 
Behavioral Intervention 
 
DXA (Dual X-ray absorptiometry) (UNC ONLY) 
 
24 hour food recall assessment, accelerometry 
 
Study Medication Dispensing 
 
Adverse Events Form 
 

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The patient will be eligible for the study at the completion of the baseline visit evaluation and if: 
 
An adequate screening evaluation is completed (including a fasting laboratory evaluation); 
 
The patient is a woman who can become pregnant, she has a negative pregnancy test at 
the Screening Visit and, if sexually active, agrees to continue with adequate contraceptive 
precautions; 
 
All criteria outlined in inclusion/exclusion criteria in Sections 3.2.1 and 3.2.2 continue to 
be met. 
After all eligibility requirements have been verified and documented, the patient can be 
randomized into the study.  The investigator will randomize the patient at the baseline visit 
following the randomization method described in Section 3.4.  All safety and efficacy baseline 
evaluations must be completed at this visit before study medication is administered. 
3.8.4. Visit 1 and 2 (Weeks 1 and 2) 
These visits will occur weekly after the Baseline Visit.  The purpose of these visits is for medication 
management (i.e., assess symptoms, adverse events/side effects, adherence, adjust dose as 
indicated) vital sign collection (including weight), and to provide the behavioral therapy 
intervention.   The CGI-S will be completed at V1 and V2 and the BPRS and C-SSRS will be 
completed at V2 only.  
3.8.5. Visit 3 (Week 4) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing  
 
CGI-S 
 
BPRS 
 
C-SSRS 
 
Substance Use Scale 
 
Alcohol Use Questionnaire 
 
Other Medications Record 
 
Study Medication Adherence Form 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
3.8.6. Visit 4 (Week 6) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing  
 
CGI-S 
 
Study Medication Adherence and Dispensing Form 

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 
Other Medications Record 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
3.8.7. Visit 5 (Week 8) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing 
 
CGI-S 
 
BPRS 
 
C-SSRS 
 
Substance Use Scale 
 
Alcohol Use Questionnaire 
 
Other Medications Record 
 
Study Medication Adherence Form 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
3.8.8. Visit 6 (Week 10) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing 
 
CGI-S 
 
Study Medication Adherence and Dispensing Forms 
 
Other Medications Record 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
3.8.9. Visit 7 (Week 12) 
This visit will include completing: 
 
Vital Signs, weight 
 
Blood draw for laboratory assessment (LFT (AST, ALT, GGT, total bilirubin), creatinine, 
eGFR, Lipid Profile, HbA1C, fasting glucose) 
 
Study Medication Dispensing 
 
CGI-S 
 
BPRS 
 
C-SSRS 

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 
Substance Use Scale 
 
Alcohol Use Questionnaire 
 
Other Medications Record 
 
Study Medication Adherence Form 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
3.8.10. Visit 8 (Week 16) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing 
 
CGI-S 
 
BPRS 
 
C-SSRS 
 
Study Medication Adherence Form 
 
Other Medications Record 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
3.8.11. Visit 9 (Week 20) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing 
 
CGI-S 
 
BPRS 
 
C-SSRS 
 
Study Medication Adherence Form 
 
Other Medications Record 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
3.8.12. Visit 10 (Week 24) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing 
 
CGI-S 
 
BPRS 

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 
C-SSRS 
 
Substance Use Scale 
 
Alcohol Use Questionnaire 
 
Other Medications Record 
 
Study Medication Adherence Form 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
 
24 hr food recall assessment, accelerometry 
 
EDE-Q (Eating Disorder Examination Questionnaire) 
 
TFEQ (Three-Factor Eating Questionnaire) 
 
FCI questionnaire (Food and Craving Inventory) 
 
Blood draw for laboratory assessment (chemistry, CBC w/diff, LFT (AST, ALT, GGT, total 
bilirubin), creatinine, eGFR, Lipid Profile, HbA1C, fasting glucose, insulin, leptin, Ghrelin, 
PYY3-36, GLP-1) 
 
Urine Drug Screen 
3.8.13. Visit 11 (Week 28) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing 
 
CGI-S 
 
BPRS 
 
C-SSRS 
 
Study Medication Adherence Form 
 
Other Medications Record 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
3.8.14. Visit 12 (Week 32) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing 
 
CGI-S 
 
BPRS 
 
C-SSRS 
 
Substance Use Scale 

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 
Alcohol Use Questionnaire 
 
Other Medications Record 
 
Study Medication Adherence Form 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
3.8.15. Visit 13 (Week 36) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing 
 
CGI-S 
 
BPRS 
 
C-SSRS 
 
Study Medication Adherence Form 
 
Other Medications Record 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
3.8.16. Visit 14 (Week 40) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing 
 
CGI-S 
 
BPRS 
 
C-SSRS 
 
Study Medication Adherence Form 
 
Other Medications Record 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
3.8.17. Visit 15 (Week 44) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing 
 
CGI-S 
 
BPRS 
 
C-SSRS 

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 
Substance Use Scale 
 
Alcohol Use Questionnaire 
 
Other Medications Record 
 
Study Medication Adherence Form 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
3.8.18. Visit 16 (Week 48) 
This visit will include completing: 
 
Vital Signs, weight 
 
Study Medication Dispensing 
 
CGI-S 
 
BPRS 
 
C-SSRS 
 
Study Medication Adherence Form 
 
Other Medications Record 
 
Adverse Events Form 
 
Behavioral Treatments and Behavioral Treatment Adherence Forms Global Behavioral 
Treatment Adherence Form 
 
Schedule DXA (Dual X-ray absorptiometry) (UNC ONLY) to be completed ideally by Week 
52 
 
Setup 24 hr food recall assessment and accelerometry to be completed over the next 4 
weeks before study completion 
3.8.19. Visit 17 (Week 52) or Discontinuation Visit (if patient is discontinuing the assigned 
treatment condition early) 
This visit will include completing: 
 
Vital Signs, weight 
 
Physical exam and medical history 
 
CGI-S 
 
BPRS 
 
C-SSRS 
 
Substance Use Scale 
 
Alcohol Use Questionnaire 
 
Other Medications Record 
 
Study Medication Adherence Form 
 
Adverse Events Form 

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 
Behavioral Treatments and Behavioral Treatment Adherence Forms 
 
Global Behavioral Treatment Adherence Form 
 
DXA (Dual X-ray absorptiometry) (UNC ONLY) 
 
24 hr food recall assessment, accelerometry 
 
EDE-Q (Eating Disorder Examination Questionnaire) 
 
TFEQ (Three-Factor Eating Questionnaire) 
 
FCI questionnaire (Food and Craving Inventory) 
 
Blood draw for laboratory assessment (chemistry, CBC w/diff, LFT (AST, ALT, GGT, total 
bilirubin), creatinine, eGFR, Lipid Profile, HbA1C, fasting glucose, insulin, leptin, Ghrelin, 
PYY3-36, GLP-1, 2 hour OGTT) 
 
Urine Drug Screen 
 
Reason for Assigned Treatment Discontinuation 
If not completed between Week 48-Week 52 will need to: 
 
Schedule DXA (Dual X-ray absorptiometry) (UNC ONLY)  
 
24 hr food recall assessment and accelerometry 
3.8.20. Unscheduled Visits 
Unscheduled visits may occur at any time during the study and may occur for many reasons.  
These visits require completion of the appropriate Unscheduled Visit form only if the visit occurs 
for one of the following reasons: 
 
Assessment of possible change in psychiatric symptoms 
 
Assessment of possible change in drug tolerability, adverse event 
 
Assessment of possible change in medical status 
 
Assessment of need for medication changes or adjustment 
Forms available for these visits will include:  CGI-S, Side Effect/Adverse Event Form, Vital signs, 
Alcohol Use Questionnaire, Substance Use Scale, Laboratory tests and/or Other Medication 
Record. 
3.9. 
DETAILS OF PROCEDURES 
3.9.1. Study Materials 
Sites will use a stadiometer for measuring height and receive instructions for clinical laboratory 
specimen collection, study documents (source documents, behavioral treatment manual, drug 
logs, etc) and study medication. In addition, sites will be provided with accelerometers, digital 
scales, and behavioral treatment handbooks for enrolled participants. 

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3.9.2. Structured Clinical Interview for DSM-IV (SCID) 
The Structured Clinical Interview for DSM-IV (SCID) will be used to confirm the diagnosis of 
schizophrenia or schizoaffective disorder and the presence or absence of alcohol abuse or 
dependence.  Detailed instructions for administration of this interview will be provided.  A qualified 
clinician should administer the SCID.   
The SCID is a semi-structured interview designed to evaluate DSM-IV Axis I diagnoses (Spitzer, 
Williams et al. 1992).  It enables trained clinical raters to reliably determine Axis I diagnoses in 
diverse patient populations (Skre, Onstad et al. 1991; Segal, Hersen et al. 1994; Ventura, 
Liberman et al. 1998). Because the SCID is completed by a trained clinician who may rely on 
medical records, staff reports, and information from caretakers, an accurate diagnostic picture 
may be obtained even when the patient is limited in ability to provide accurate self-report, as may 
be true for patients who are severely disorganized or cognitively impaired.  
The SCID will be administered at screening. 
3.9.3. Physical Examination   
Patients will undergo a routine physical exam during screening. 
3.9.3.1. 
Vital Signs  
Arterial systolic and diastolic blood pressure and radial artery pulse rate will be measured while 
the patient is seated at the scheduled visits designated in the Schedule of Events in Appendix 1 
and Appendix 2. 
Vital signs measurements scheduled at the same visit as blood samples are to be completed 
before blood is drawn.  
3.9.3.2. 
Height 
Height will be measured at the screening visit.  Patients will be measured without shoes. 
3.9.3.3. 
Body Weight  
Body weight will be recorded at screening, baseline and every visit through the 52-week treatment 
phase. The following guidelines will aid in the standardization of these measurements:  
 
The same scale should be used to weigh a given patient at every visit.   
 
Scales should be calibrated: scales should be at zero just prior to each patient’s weigh-in 
session.   
 
A patient should void prior to being weighed and be minimally clothed (i.e., no shoes or 
heavy over garments).  
 
Weight should be recorded before a patient’s meal and at approximately the same time at 
each visit.  

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3.9.3.4. 
Body Mass Index (BMI)  
Body mass index (BMI) will be determined with the patient’s height and weight at the screening 
visit.  BMI must be calculated using the following formula: A person’s (Weight in pounds divided 
by their height in inches squared) x 703. This should then be confirmed using the BMI chart 
provided in Appendix 5. The BMI for each patient will be calculated by the Data Management 
System to verify accuracy. 
3.9.4. Clinical Global Impression Scale (CGI) 
The Clinical Global Impression (CGI) Severity Scale will be used for repeated evaluations of 
global psychopathology. The CGI scale is widely used in schizophrenia research.  The CGI-S is 
a single Likert scale rating severity of psychopathology on a scale of 1 (normal, not ill) to 7 (very 
severely ill).  The CGI-S will be completed at all study visits. 
3.9.5. Substance Use Scale 
The Alcohol Use Scale (AUS) and Drug Use Scale (DUS) are 5-point scales based on DSM-III-R 
criteria for severity of disorder: 1 = abstinence, 2 = use without impairment, 3 = abuse, 4 = 
dependence, and 5 = severe dependence. 
3.9.6. Adverse Event/Side Effects Form  
The Adverse Events/Side Affects Form records the results of a systematic inquiry of a set of pre-
specified side effects that are common with the study medication.  The rater also inquires about 
any additional side effects or adverse events that may have occurred.  Each side effect or adverse 
event is recorded and rated for severity. Ratings are completed by a clinician. 
3.9.7. Concomitant/Adjunctive Medications 
Concomitant and Adjunctive Medications will be documented using the Other Medications Record 
(OMR) form at Baseline and all study visits. 
3.9.8. Study Medication Adherence 
Participants will be asked about his/her medication adherence at each appointment.  Study 
personnel will count and record the number of pills in the patient’s study medication bottles and 
provide immediate feedback, reinforcing the behaviors of patients who appear to be taking 
medications as prescribed and problem-solving with those who appear not to be.  Clinicians will 
review with patients the use of pill-minder boxes, as needed. 
3.9.9. Behavioral Treatment Adherence 
Participation in the Behavioral Treatment Intervention must be documented at each visit using the 
Behavioral Treatment Adherence Record--BY VISIT form. At the final study visit (Week 52 or 
Study Discontinuation), overall adherence to the Behavioral Treatment will be rated using the 
Behavioral Treatment Adherence Record—GLOBAL form. 

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3.9.10. Laboratory Test Assessments   
Laboratory testing will be conducted at the respective medical center laboratories at the 2 sites 
for this study: UNC Hospitals and Columbia University Medical Center for the routine laboratory 
tests. Appetite regulatory hormone testing will be conducted in the UNC Endocrine Laboratory. 
These hormonal samples will be collected and stored locally at -80°C and then shipped in batches 
to the UNC Endocrine Laboratory at intervals over the course of the study. Blood will be drawn 
from each patient at the screening visit, and at the scheduled visits designated in the study 
Schedule of Events in Appendix 1 and Appendix 2. The following tests will be performed:   
 
Hematology: hemoglobin, hemoglobin A1C, hematocrit, RBC, WBC, differential white 
blood cell count, and absolute platelet count  
 
Serum chemistries: sodium, potassium, chloride, CO2, BUN, creatinine, fasting glucose, 
AST, ALT, alkaline phosphatase, total protein, albumin, total bilirubin, estimated GFR 
 
Lipids: total cholesterol, LDL-C, HDL-C, triglycerides 
 
Hormonal assays: Fasting insulin, leptin, ghrelin, PYY3-36, GLP-1 
 
2 Hour oral glucose tolerance test (2 hour OGTT) 
 
Urine screen for drugs of abuse 
 
Serum pregnancy test for women who can become pregnant must be performed at the 
Screening Visit.  
 
Values outside the normal range will be assessed for clinical significance by the site PI. If the 
accuracy of the result is in question, the test(s) may be repeated. If the result of any test (or repeat 
test, if done) is indicated as clinically significant in the samples taken during the screening or 
baseline visits, the patient will NOT be randomized into the study without the permission of the 
PI. (Guidelines for identifying potentially clinically significant laboratory values will be provided).  
3.9.11. Alcohol Use Questionnaire (AUQ) 
This scale quantifies the daily intake of alcoholic beverages since the previous visit and the 
highest number of drinks in a single 24-hour period since the last assessment. Given the 
increased risk for metformin-associated lactic acidosis in the setting of alcohol abuse, the goal is 
for the clinician to know how much alcohol each subject is drinking so as to help identify any 
individuals who may meet criteria for alcohol abuse or dependence after study randomization. 
3.9.12. Brief Psychiatric Rating Scale (BPRS) 
The BPRS is an 18-point scale developed to measure changes in symptoms in people with 
schizophrenia participating in clinic trials. The BPRS is a clinician-based rating scale that 
emphasizes significant psychiatric symptoms including positive and negative symptoms of 
psychosis and general psychopathology. Ratings are made based on a 7-point Likert scale, 
from 1=“Not Present” to 7=“Extremely Severe.” The scale is administered in context of a clinical 
interview and includes observation of subjects’ behavior. 

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3.9.13. Columbia Suicide Severity Rating Scale (C-SSRS) 
The C-SSRS is a suicidal ideation rating scale designed to assess suicidality in adolescents and 
adults. It rates suicidal ideation on a scale from “wish to be dead” to “active suicidal ideation with 
plan and intent.” The scale identifies behaviors that may be indicative of an individual’s intent to 
commit suicide. The scale is administered in an interview format by a trained clinician.  
3.9.14. Eating Disorder Examination Questionnaire (EDE-Q) 
The EDE-Q (Fairburn & Beglin, 1994) was designed to assess information on eating behavior in 
patients with eating disorders. It is composed of a total score and four subscales (Dietary 
Restraint, Eating Concern, Weight Concern, and Shape Concern); higher scores reflect greater 
severity or frequency. The EDE-Q also provides information on the frequency of objective and 
subjective binge eating and overeating episodes. 
3.9.15. Three-Factor Eating Questionnaire (TFEQ) 
The TFEQ (Stunkard & Messick, 1985) is used to assess psychological features of eating 
behavior (disinhibition, cognitive-restraint, and susceptibility to hunger). 
3.9.16. Food Craving Inventory (FCI) 
The FCI (White, Whisenhunt et al. 2002) was designed to measure specific food cravings, 
including a total score and four subscale scores (dietary fats, sweets, carbohydrates/starches, 
and fast-food fats). 
3.9.17. Dual-Energy X-ray Absorptiometry (DXA) 
DXA uses low- and high-energy photon beams to assess lean and fat tissue and bone mineral 
across the body. Subjects will undergo DXA scans at baseline and end-of-study. Radiation 
exposure from this procedure is minor, representing approximately one sixth of the unavoidable 
daily background radiation. DXA scanning will be conducted at the UNC site only. 
3.9.18. Accelerometry 
Primary estimates of sedentary and active behavior will be estimated via 7-day accelerometer 
monitoring at baseline, midpoint, and end-of-study. Accelerometers are small lightweight 
devices that measure acceleration and can be worn either on the wrist or at the waist to 
measure and record changes in body motion. This study will use the Actigraph GT3X+ 
accelerometer. 
3.9.19. 24-hour dietary recall assessment 
24-hour dietary recall assessments are administered as telephone questionnaires by trained 
personnel from the UNC Nutrition and Obesity Research Center. At baseline, mid- and end-of-
treatment, each subject will complete two 24-hour nutritionist-assisted dietary recalls conducted 
during one random weekday and one weekend day. These assessments will provide a means 
for evaluating within-subject changes in dietary intake over the course of the study period. The 

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key measures of interest will be % macronutrient (fat, protein, carbohydrate) intakes.  
4. 
DISCUSSION OF STUDY DESIGN AND APPROACH 
There is a high comorbid prevalence of obesity and related metabolic disorders in people with 
schizophrenia.  Given the fact that these comorbidities stem at least in part from established side-
effects of antipsychotic medications, the relative paucity of pharmacological intervention research 
in addressing weight reduction in overweight people with schizophrenia is surprising. Current 
FDA-approved agents for obesity management include multiple sympthomimetic agents such as 
phentermine, phenylpropanolamine, and phentermine/topiramate combination treatment. 
Sympathomimetics have abuse potential, can contribute to hypertension and insomnia and also 
potentially exacerbate psychosis, making them less than ideal options for people with chronic 
psychotic disorders. Orlistat is a lipase inhibitor that is medically safer but it is often associated 
with unpleasant gastrointestinal side-effects and was found to be ineffective for antipsychotic-
associated weight gain (Joffe et al, 2008). 
In light of this background, several agents without sympathomimetic properties that are not FDA-
approved for weight-loss have been studied for antipsychotic-associated weight gain in people 
with chronic psychotic disorders. Meta-analysis has identified metformin as the most effective 
adjunctive treatment studied to date, associated with approximately 3 kg weight reduction (Mizuno 
et al., 2014). Lorcaserin, a recently-approved 5-HT2C agonist for weight loss, represents another 
potentially important option for people with schizophrenia since it does not have sympathomimetic 
properties. In two large 52-week studies, mean weight loss for lorcaserin was 5.5-6 kg in 
overweight adults, with a differential weight loss for lorcaserin compared to placebo of 3-3.5 kg. 
The use of combination treatment with mechanistically distinct agents for weight loss (e.g. 
phentermine/topiramate, bupropion/naltrexone) and for other chronic disorders such as 
hypertension, epilepsy, and diabetes has been remarkably successful. The current study will seek 
to explore the combination of two non-symptathomimetic drugs – metformin and lorcaserin – for 
their effect on weight in overweight people with schizophrenia. 
The results from this study are intended to be generalizable and therefore the inclusion/exclusion 
criteria are not restrictive with the exception of several specific safety issues. Patients must be 
overweight as defined by a BMI > 27. The study will allow any patient with schizophrenia or 
schizoaffective disorder who is not in the first-episode of illness. Concurrent affective illness, 
substance abuse (except alcohol abuse or dependence) and other axis I disorders are allowed. 
Patients can be on one or two antipsychotics, typical or atypical. Stable concurrent treatment with 
other classes of medications is allowed with the exception of monoamine oxidase inhibitor (MAOI) 
class of antidepressants, given the theoretical risk of developing serotonin syndrome for people 
taking lorcaserin. Enrollment will be limited to clinically stable outpatients. The most serious risk 
associated with metformin is lactic acidosis, a very rare but often fatal condition. The incidence is 
about 3 cases in 100,000 patient-years, with about 50% mortality when it occurs; however, in 

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more than 20,000 patient-years exposure to metformin in clinical trials, there are no known reports 
of fatalities.   
Finally, the specific outcome measures were chosen primarily to assess the effects of metformin 
and lorcaserin on weight and selected metabolic parameters including measures of lipid and 
glucose metabolism. Additional outcomes will include effects on appetite regulatory hormones 
(e.g. leptin, grehlin, PYY3-36, and GLP-1), as well as information on appetite and feeding 
behavior (ie food intake assessments), fat distribution using DXA imaging, and accelerometry for 
assessing energy expenditure across the study. Evidence to support lorcaserin/metformin-
associated benefits on measures of weight and lipid/glucose metabolism would provide 
generalizable information on a readily available weight-loss strategy for overweight patients with 
schizophrenia. Further assessments addressing mechanistic aspects of how metformin and 
lorcaserin may achieve weight loss will provide critical insights on how to design future studies 
using metformin and lorcaserin and also how to approach other novel interventions for 
antipsychotic weight gain. 
5. 
STUDY MONITORING AND OVERSIGHT 
5.1. 
SITE MONITORING  
Representatives of the University of North Carolina at Chapel Hill will perform assessment 
locations periodically to assess the data quality and study integrity. Monitors will review study 
records and directly compare them with source documents, discuss the conduct of the study with 
the Investigator and verify that the facilities remain acceptable.  
5.2. 
RECORD RETENTION 
The site investigator must retain investigational product disposition records, copies of CRFs or 
eCRFs and source documents for a minimum of four years after the trial is complete or for the 
maximum period required by Institutional policies, whichever is longer. 
6. 
SAFETY AND ADVERSE EVENTS  
It is very important that all staff involved in the study is familiar with the content of this section. 
The principal investigator of each site is responsible for ensuring compliance with all procedures. 
6.1. 
ADVERSE EVENTS 
The definitions of adverse events (AE’s), serious adverse events (SAE’s) and other significant 
adverse events (OAE’s) are given below. An adverse event is the development of an undesirable 
medical condition or the deterioration of a pre-existing medical condition following or during 
exposure to a pharmaceutical product, whether or not considered causally related to the product. 
An undesirable medical condition can be symptoms (e.g., nausea, chest pain), signs (e.g., 
tachycardia, enlarged liver) or the abnormal results of an investigation (e.g., laboratory findings, 
electrocardiogram). In clinical studies, an AE can include an undesirable medical condition 

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occurring at any time, including run-in or wash-out periods even if no study treatment has been 
administered. 
Dr. Jarskog (PI) will be available on pager and cell phone to all co-investigators to discuss any 
safety issue that emerges over the course of the study. All adverse events (AEs) occurring during 
the course of the study are to be documented and reported to the PI.  All Serious Adverse Events 
are reported to the DSMB, IRBs and NIDDK as required.  The occurrence of AEs will be assessed 
during the study and the PIs will follow all AEs to the point of satisfactory resolution. The PI will 
obtain additional input from Dr. Kirkman (Co-I, Endocrinologist) as needed for evaluating and 
managing any medical AEs.  
6.1.1. Serious Adverse Events 
AEs will be assessed to determine if they meet criteria for an SAE.  Serious adverse events 
(SAEs), as defined by the FDA, will be systematically evaluated at each clinic visit. Any SAE will 
be reported to the IRB, NIDDK, and the FDA. The initial SAE report will be followed by 
submission of a completed SAE report to all three institutions.  In the event that a patient either 
withdraws from the study or the investigator decides to discontinue a patient due to SAE, the 
patient will have appropriate follow-up and/or stabilization.  Follow-up will continue until the 
problem requiring hospitalization has resolved or stabilized with no further change expected, is 
clearly unrelated to study procedures, or results in death. Outcome of SAEs will be periodically 
reported to NIDDK. A summary of the SAEs that occurred during the previous year will be 
included in the annual progress report to NIDDK.  
 
The trial period is defined from the time that the informed consent document is signed until 30 
days after administration of the last dose of the trial drug.  All serious AEs occurring during the 
trial period (including death due to any cause) or within 30 days after administration of the last 
dose of the trial drug must be communicated within 1 day of the investigator becoming aware of 
the event to designated personnel, using the telephone or fax numbers provided in the Study 
Reference Manual. Any fatal or life threatening AEs must be reported immediately, but no longer 
than 1 day from the time the investigator becomes aware of the event.  A causality assessment 
must be provided for all serious AEs.  Critical follow-up information on serious AE’s must be 
provided as soon as it is available, but no longer than 1 day from the time the investigator became 
aware of the information.   Other essential, but not critical, information may be reported within the 
following 5 days.  Although it is important to report all serious AEs within 1 day, extra measures 
must be taken to ensure that any serious, unexpected, possibly drug-related AE be communicated 
immediately.   
A serious AE is defined as one that satisfies any of the following criteria: 
 
Results in death. 

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 
Is immediately life-threatening, including potentially life threatening suicidal behavior or 
suicidal behavior that results in hospitalization. 
 
Requires inpatient hospitalization or prolongation of existing hospitalization.  
 
Results in persistent or significant disability or incapacity. 
 
Is a congenital abnormality or birth defect. 
 
Is an important medical event that may jeopardize the subject or may require medical 
intervention to prevent one of the outcomes listed above.  
 
The causality of SAEs (i.e., their relationship to study treatment) will be assessed by the 
investigator(s).   For further guidance on the definition of a SAE and a guide to the interpretation 
of the causality question, see Appendices 6 and 7. 
6.1.2. Death 
All deaths occurring within the trial period or within 30 days after the last dose of trial drug is given 
must be reported within 1 day of the investigator becoming aware of the event. 
If an autopsy has been performed, results of the autopsy must be obtained and forwarded along 
with any available toxicology reports. 
6.1.3. Pregnancy 
 
Pregnancy is an exclusion criterion and women who can become pregnant should use adequate 
methods of birth control as outlined in the inclusion criteria. 
Should a pregnancy occur it must be reported in accordance with the procedures described 
below.  Pregnancy in itself is not regarded as an AE unless there is a suspicion that an 
investigational product may have interfered with the effectiveness of a contraceptive medication.  
However, the outcome of all pregnancies (spontaneous miscarriage, elective termination, normal 
birth or congenital abnormality) must be followed up and documented even if the subject was 
discontinued from the study.  The Adverse Events/Side Affects form will be used for this purpose. 
All reports of congenital abnormalities/birth defects are SAEs.  Spontaneous miscarriages should 
also be reported and handled as SAEs.  All other outcomes of pregnancy must be reported on 
the Adverse Events/Side Affects form. 
6.1.4. Reporting of Serious Adverse Events 
The process flow for reporting serious adverse events along with associated documents and 
contact information will be presented in the Study Reference Manual to accompany this protocol, 
as well as the Instructions for Completing the Serious Adverse Event Report. The investigator 
must provide the minimal information: i.e. subject’s initials and date of birth, study ID number, 
medication, period of intake, and nature of the adverse event and investigator’s causality 
assessment.  The other site will also have the opportunity to make contact with the PI for clarifying 
the event seriousness criteria. 

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A report of a SAE by telephone must always be confirmed by a written, more detailed report. If a 
non-serious case becomes serious, this and other relevant information should also be reported. 
After initial notification, the PI will perform a medical review of the Serious Adverse Event Report. 
UNC-CH will be responsible for collecting source documents and confirming the seriousness, 
relationship to study product and expectedness. Narratives and all supporting documentation will 
be written and gathered by the PI and sent to NIDDK at the same time.  
UNC-CH will forward any follow-up information to the DSMB. 
It is the investigator’s responsibility to report the AE’s which are classified as serious and related 
to the use of the study drug to the Institutional Review Board (IRB) which has approved the 
protocol unless otherwise required and documented by the IRB. 
All SAEs must be reported, whether or not considered causally related to the study drug. All SAEs 
will be recorded in the data management system. The investigator is responsible for informing the 
IRB of the SAE as per local requirements. 
6.2. 
DATA SAFETY MONITORING BOARD 
The DSMB will evaluate issues of participant safety, the adequacy and integrity of accumulating 
data and study’s ability to test the a priori hypotheses.  The DSMB will also identify if any study 
procedures should be altered or stopped in the event of an indication of clinical benefit or harm to 
participants attributable to the study interventions.  
A DSMB will be convened and will be comprised of three members including a biostatistician, 
one psychiatrist experienced in treating patients with schizophrenia and one internist with 
experience with management of obesity and diabetes.  No members of the DSMB will be 
affiliated with any of the other institutions involved in the study. 
During the initial meeting of the DSMB, the Board will formulate its operating procedures, 
including such issues as the Board's meeting schedule; the study monitoring process; the types 
and formats of reports it will receive from the study statistician; and how minutes will be taken 
and distributed. 
Before the study is opened to subject accrual, the DSMB will meet to review the study protocol, 
particularly the specific outcome definitions, the analysis plan, the procedures for recording and 
reporting SAEs, and the monitoring proposal. The subject informed consent document/process 
also will be inspected to ensure that all required elements have been included in language 
understandable to a typical study subject to be enrolled in the trial.  
The DSMB will monitor and evaluate the safety of the subjects throughout the course of the 
research study, through the following processes: 

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 
Assess the performance of the trial with respect to subject recruitment, retention and follow-
up, protocol adherence, and data quality and completeness, to help ensure the likelihood of 
successful and timely trial completion.  
 
Monitor interim data regarding the safety of the study regimens.   
 
Review and consider any protocol modifications or ancillary studies proposed by the study 
investigators after the main trial begins to ensure that these do not negatively impact on the 
main trial.  
 
Advise the Institutional Review Board as to whether the protocol should continue as 
scheduled or undergo a modification due to a finding from the monitoring process. 
The DSMB will meet regularly (at least twice per year) to monitor the cumulative safety data 
during the period when participants are in the study.  The DSMB will monitor the study 
according to the guidelines specified in the study protocol and the operating procedures 
established at the initial meeting, unless the DSMB determines during the course of the trial that 
modification of the guidelines is in the best interest of the study and its participants. Such a 
decision may be based on new information that emerges during the course of the study, 
realization of inappropriate initial study assumptions, or the occurrence of an unanticipated 
scenario. 
Prior to each DSMB meeting the study biostatistician will prepare a report that summarizes 
study enrollment, progress and all adverse events including Serious Adverse Events.  This will 
include specific tables for adverse events related to cardiovascular, metabolic, neurological and 
psychiatric system organ classes. 
 
7. 
STATISTICAL ANALYSES 
7.1. 
ANALYSIS POPULATIONS 
Patients who are screened but not randomized will not be included in any efficacy or safety 
analyses of study data. However, the number of patients screened and reasons for any screen 
failures will be reported. SAEs occurring during the screening period will also be reported. 
7.1.1. Safety Population  
The Safety Population will consist of all subjects randomized to treatment who received at least 
one dose of study medication. This population will form the basis for all safety analyses and 
selected secondary efficacy analyses. 

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7.1.2. Efficacy Evaluable Population 
The Efficacy Evaluable Population will include all subjects in the Safety Population who completed 
at least one post-baseline weight measurement. This population will form the basis for the primary 
efficacy analyses and most secondary efficacy analyses. 
7.1.3. Per-Protocol Population 
The Per-Protocol Population will consist of all patients completing the 52 week assessment of 
weight measures and in reasonable compliance with the study protocol. This includes compliance 
with study medication and excludes use of a disallowed medication.  This population will form the 
basis for selected secondary analyses. 
7.2. 
STATISTICAL CONSIDERATIONS 
The primary outcome is change in body weight at 52 weeks compared to baseline. The primary 
objective is to compare LOR/MET combination treatment with placebo. We will use a mixed model 
with treatment group, site and visit as factors, baseline as a quantitative covariate, and the 
treatment-by-visit 
and 
baseline-by-visit 
interaction 
terms. 
The 
unstructured 
(UN) 
variance/covariance matrix will be used for the analysis. The primary outcome will be a contrast 
examining the difference between treatment at the 52 week point for LOR/MET combination 
compared to placebo. 
The secondary objective is to compare LOR treatment with placebo. This analysis will be 
performed similar to the comparison of LOR/MET combination treatment with placebo. This 
comparison will be declared significant if both, LOR/MET and LOR, comparisons are significant. 
(We will also explore the data and calculate descriptive statistics and will use graphics, including 
box plots by treatment group, stem-and-leaf plots, normal probability plots, histograms and bar 
charts, and other graphics.  In addition to the analyses above, we will perform sensitivity analyses 
using fasting glucose, insulin, appetite regulatory hormones, body fat distribution, smoking status, 
gender, and type of antipsychotic medication (low vs high liability for weight gain) as covariates 
in order to assess their impact on weight in this study.    
We will follow the above plan for other key secondary weight and metabolic-related variables.  
These analyses are all exploratory.  Adverse events will be tabulated by treatment arm. 
7.2.1. Power and Sample Size Calculations:   
Based on our preliminary data with metformin for weight loss and on the published literature with 
lorcaserin monotherapy (Smith et al., 2010; Fidler et al., 2011; O’Neil et al., 2012), the following 
weight loss is hypothesized: 1.5 kg for placebo, 4.5 kg for lorcaserin monotherapy, and 6.5 kg for 
lorcaserin/metformin combination. Based on the literature and on our METS trial, the standard 
deviation of the change scores is expected to be 6 kg. We felt that a 3 kg change would be a 
clinically important change, and hence, a difference between treatment groups of 3 kg (or more) 
in change from baseline would represent a clinically important effect.  The primary contrast of 

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interest will be the difference in weight change between the placebo and lorcaserin/metformin 
combination treatment. Although a mixed effects model will be used for data analysis, a one-way, 
three-group ANOVA on change scores was used as an approximation for estimating sample size, 
as use of a mixed model for such estimation would have required us to hypothesize a covariance 
structure, pattern of dropout, and a site effect. It is thus likely that our sample size estimates are 
conservative. In this model, for the primary contrast of placebo versus lorcaserin/metformin 
combination, to achieve power=0.85, with a two-tailed significance level of 0.05, will require 27 
subjects per treatment group. A sample size of N=110 will be used in order to allow for ~25% 
dropouts. 
7.2.2. Specific Aim #1 
This aim will use weight measures to calculate means and standard deviations, along with their 
95% confidence intervals, at each time point, along with correlations among time points.  
7.2.3. Specific Aim #2 
The response variable is the effect of LOR/MET, LOR monotherapy and placebo on fasting lipid 
levels (i.e., total cholesterol, HDL, LDL, triglycerides), fasting glucose, fasting insulin, and HgA1c.  
These variables are all numeric, and the analyses will be similar to those performed for weight. 
7.2.4. Specific Aim #3 
The response variable is the effect of lorcaserin/metformin, LOR monotherapy and placebo on 
appetite regulatory hormones, body fat distribution, food intake and energy expenditure. These 
variable are numeric and the analyses will be similar to those performed for weight 
7.2.5. Missing Data 
Data may become missing in several ways. Data may be sporadically missing because a subject 
failed to attend a scheduled visit and there are usually relatively few of these instances.  If no 
more than 2 successive intermittent visits are missing, the data will be imputed. No more than 4 
visits per subject will be imputed. Data may become missing when subjects drop out, and there 
is a danger that such missing data are informative, especially problematic when the proportion of 
the missing data is large (more than 20%).  We will use sensitivity analyses to determine whether 
the amount of missing data is informative or non-informative, and the effect of such missing data 
on the results. 
8. 
HUMAN SUBJECTS RESEARCH 
8.1. 
PROTECTION OF HUMAN SUBJECTS 
This study will be conducted in accordance with the International Conference on Harmonization 
Good Clinical Practice (ICH GCP) and applicable regulatory requirements.  The study will be 
conducted in compliance with the protocol and any amendments.   

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The rights, safety and well-being of the patients are the most important considerations and should 
prevail over interests of scientists and society.   
Study personnel will have requisite education, training and experience for their assigned roles 
including training in the ethical conduct of research. 
8.2. 
RISKS AND BENEFITS  
8.2.1. Metformin Risks 
Metformin, which received FDA approval in 1995 as an oral agent to treat diabetes mellitus Type 
II, has been one of the most prescribed medications for this indication world-wide. Its side-effect 
profile is well established and it is generally safe, with several common, less serious side-effects 
and a few rare but very serious side-effects. 
The most common side effects associated with metformin therapy include diarrhea, nausea, 
vomiting, abdominal discomfort as well as headache, weakness, muscle pain. Gastrointestinal 
symptoms are usually time limited. In the METS study, most GI symptoms resolved completely 
within the first week of treatment. If diarrhea or vomiting occurs, the usual approach is to hold 
study medication until symptoms resolve and then restart one capsule daily and titrate as 
tolerated. 
A rare but very serious side-effect is lactic acidosis. The incidence is about 3 cases in 100,000 
patient-years, with about 50% mortality when it occurs. Lactic acidosis is characterized by 
elevated blood lactate levels (>5 mmol/L), low blood pH, increased anion gap, and increased 
lactate to pyruvate ratio. When metformin is implicated, elevated metformin levels (>5 
micrograms/mL) are usually found.  Symptoms of lactic acidosis are generally non-specific and 
include weakness, somnolence, myalgia, dyspnea, dizziness, syncope, hypotension, 
bradycardia, hypothermia. Lactic acidosis primarily occurs in diabetic patients with renal 
insufficiency and in the setting of multiple serious medical and surgical conditions. Lactic acidosis 
also occurs in patients with congestive heart failure. The risk of lactic acidosis increases with age 
and degree of renal dysfunction and the risk may therefore be reduced by regular monitoring of 
renal function.  
Metformin should not be administered to patients with impaired renal function, defined by serum 
creatinine levels >1.5 in males and >1.4 in females. During ongoing treatment, hematologic 
parameters and renal function should be measured at least annually. Metformin should not be 
administered to patients with hypoxemia, dehydration or sepsis. Metformin should also be avoided 
in patients with impaired hepatic function because of reduced lactate clearance. Alcohol 
potentiates the effects of metformin on lactate metabolism and therefore patients with alcohol 
abuse or dependence should not receive metformin. Iodinated intravascular contrast material can 
lower renal clearance acutely and metformin should be discontinued temporarily in anticipation of 

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
Protocol v 1.0 
40 
such procedures. If patients are suspected of having lactic acidosis, it represents a medical 
emergency and must be treated in a hospital setting. 
While metformin is not a hypoglycemic agent under usual circumstances, hypoglycemia can occur 
in settings of deficient caloric intake, strenuous exercise without adequate compensatory caloric 
intake, concomitant use of hypoglycemic agents or alcohol. 
Metformin can cause reduced serum levels of vitamin B12 in <10% of patients by an unclear 
mechanism. This has only rarely been associated with anemia and it has been rapidly reversible 
with vitamin B12 supplementation or metformin discontinuation. 
Drug-drug interactions are possible with metformin. In particular, oral hypoglycemic agents can 
potentiate a hypoglycemic state. However, patients in this study cannot have diabetes mellitus or 
be receiving treatment with a glucose-lower agent. Furosemide can increase blood metformin 
levels as can nifedipine. Cimetidine has been shown to increase metformin blood levels 
substantially and other cationic drugs are theoretically liable to increase levels, such as amiloride, 
digoxin, morphine, procainamide, quinidine, ranitidine, triamterene, trimethoprim, and 
vancomycin. 
Metformin is rated in the Pregnancy Category B for teratogenic effects. Metformin has not been 
found teratogenic in rats and rabbits up to 600 mg/kg/day. Well-controlled safety data in humans 
is not available. Females in this study must not be pregnant and must agree to use medically 
acceptable contraception or abstinence during the study. If they become pregnant during the 
study they will be discontinued. 
In addition, blood draws will be done at specified visits. There may be temporary discomfort when 
blood samples are taken and there is a small risk of bruising, infection or inflammation at the 
needle stick site.  Some people may feel faint or dizzy after giving only a small amount of blood.   
We will use routine blood draw procedures (e.g. sterile technique) to minimize risk of the blood 
draw. 
8.2.1.1. 
Lorcaserin Risks 
Lorcaserin has a well-established and generally benign side effect profile. Trials to date that 
have included over 3,400 subjects exposed to lorcaserin for at least 1 year found the most 
common adverse events for lorcaserin compared to placebo were headache (17% vs 10%), 
dizziness (9% vs 4%), nausea (8% vs 5%), and fatigue (7% vs 3%). There were no differences 
in the occurrence of depression, anxiety or other psychiatric events, including suicidal ideation in 
studies of lorcaserin at lorcaserin doses up to 20 mg per day. At supratherapeutic doses from 
short-term Phase I safety studies in non-obese healthy volunteers, doses of 40 and 60 mg per 
day were associated with increased incidence of euphoria compared to placebo (up to 19% of 
subjects reported euphoria). In subsequent studies in obese individuals of lorcaserin up to 40 
mg per day, reports of euphoria were low (<1%). In the large Phase III trials with lorcaserin 
limited to 20 mg per day, there was no increase in reports of euphoria or other symptoms of 

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
Protocol v 1.0 
41 
mania, psychosis or physical/psychological dependence compared to placebo (Smith et al., 
2010; Fidler et al., 2011). Because of the potential for lorcaserin to cause euphoria at 
supratherapeutic doses, it has been listed as a Schedule IV controlled substance. There are no 
data from animal or human studies demonstrating whether lorcaserin can induce physical 
dependence. 
Lorcaserin has not previously been studied in people with schizophrenia. However, 5-HT2C 
agonists have previously been hypothesized to have potential antipsychotic efficacy by reducing 
mesocortical dopamine transmission in animal models of psychosis. To test this hypothesis, a 
recent 6 week RCT examined the safety and efficacy of vabicaserin, a selective 5-HT2C agonist 
versus olanzapine in 289 people with acutely exacerbated schizophrenia. Vabicaserin was 
found to produce similar improvements to olanzapine in positive psychotic symptoms, with no 
benefits on negative symptoms. There was no evidence of significant side effects associated 
with vabicaserin, including no evidence of psychotic exacerbation or exacerbation of other 
psychiatric symptoms (Shen et al, 2014). Although not directly testing lorcaserin, these data 
provide reassurance that 5-HT2C agonists do not pose a significant risk of psychotic 
exacerbation in people with schizophrenia, and that 5-HT2C agonists as a class may actually 
exert a therapeutic role for psychosis.  
Given that lorcaserin is a serotonin receptor agonist, it has a potential risk of causing side effects 
associated with serotonin excess including the possible risk of serotonin syndrome. Serotonin 
syndrome is a rare but serious side effect that is characterized by a constellation of signs and 
symptoms that can include tachycardia, agitation, confusion, hypertension, rigidity, tremor, 
hyperpyrexia, and hyperreflexia (Boyer et al. 2005). It has been associated with agonism at the 
5HT2A receptor (Nisijima et al, 2001; Isbister et al., 2001) and usually resolves quite rapidly 
following administration of a 5HT2A antagonist such as cyproheptadine. Because lorcaserin is a 
5HT2C agonist, it does not normally induce serotonin syndrome. However, one of the 3,400 
subjects exposed to lorcaserin in the registration trials developed symptoms consistent with 
moderate severity serotonin syndrome, and one subject developed mild symptoms judged 
possibly consistent with serotonin syndrome. Given that lorcaserin has not previously been 
studied in people with psychosis or depression, the safety of co-administration of other 
serotonergic agents has not been well established. The current study will take precautions by 
excluding patients taking pro-serotonergic agents including meperidine, buspirone, 
dextromethorphan, triptans, tramadol, ritonavir, tryptophan, ginseng, St. John’s wort. The current 
project provides an excellent opportunity to begin to collect data on the tolerability and safety of 
lorcaserin in clinically stable patients with schizophrenia taking antipsychotics. Subjects will be 
instructed in the signs and symptoms of serotonin syndrome and instructed to contact the 
research clinic or to seek emergency medical care. Side-effect monitoring aimed at psychiatric 
decompensation using the BPRS, C-SSRS and CGI will be administered regularly, especially 
during the first 3 months of the trial. Targeted side effect monitoring aimed at detecting serotonin 

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
Protocol v 1.0 
42 
syndrome, or less fulminant serotonin excess, will be performed at each study visit. Furthermore, 
as part of the behavioral intervention, each subject will be contacted via telephone each week of 
the study to review the last behavioral lesson, and during these calls, subjects will be screened 
for evidence of serotonin syndrome. 
A prior concern with non-selective serotonin agonists for weight loss (e.g. fenfluramine, 
dexfenfluramine) had been cardiac valvulopathy, which led to the withdrawal of these agents by 
the FDA. The mechanism underlying valvular heart disease has been traced to agonism at 5-
HT2B receptors which are expressed on cardiac valves (Rothman et al., 2000; Roth, 2007). As a 
selective 5-HT2C agonist, lorcaserin is not expected to produce similar cardiac valve problems 
and this was confirmed in the BLOOM and BLOSSOM studies (Smith et al., 2010; Fidler et al., 
2011). Echocardiography was conducted on all participants and no evidence of lorcaserin-
associated valvulopathy emerged. 
Finally, the BLOOM-DM study demonstrated the safety of concurrent treatment with lorcaserin 
and metformin (O’Neil et al., 2012). Of the 604 enrolled participants, over 90% were taking 
stable doses of metformin at study entry. There were no significant safety signals that emerged, 
including similar rates of reported hypoglycemia between lorcaserin 10 mg BID (7.4%) and 
placebo (6.3%) arms. 
 
8.2.1.2. 
Moderation of Risk 
All of the medications to be used in this study have been evaluated and approved by the FDA for 
clinical use. The risks and benefits of the specific study medications, of specific study procedures, 
and of the study as a whole will be explained to participants. After a thorough history, subjects 
will undergo careful physical, psychiatric, and laboratory examinations to assure the clinical 
appropriateness and safety of their participation. Close clinical monitoring will ensure the 
appropriateness and safety of their continued participation including monthly laboratory tests 
assessing renal and hepatic function. Given the increased risk of lactic acidosis in the setting of 
alcohol abuse and metformin, daily alcohol intake will be recorded for the purpose of helping to 
identify any subject who begins to meet criteria for alcohol abuse or dependence following study 
randomization. Given the increased theoretical risk of serotonin syndrome with lorcaserin, some 
pro-serotonergic agents have been added to the exclusion criteria, including all monoamine 
oxidase inhibitor (MAOI) class of antidepressants. Adjunctive medications are allowed to relieve 
specific clinical symptoms or manage study medication adverse events. 
8.2.2. Potential Benefits to Participants 
Study medication, all screening tests, laboratory tests, and assessments outlined in this protocol 
will be provided free of charge. The Behavioral Treatments that will be provided to all participants 
free of charge is expected to benefit subjects by enhancing their knowledge and providing 
strategies for dietary modification, exercise, and weight loss. All subjects are likely to benefit from 

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Protocol v 1.0 
43 
the general medical advice on improved diet and increased physical activity that all subjects will 
receive during the study. They can also benefit from the medical monitoring that is performed at 
baseline and throughout the study. If physical conditions are detected during the study, then 
subjects will be referred to their local primary care providers for further evaluation and treatment. 
Furthermore, there is a growing database to support that metformin is associated with modest but 
significant weight loss in overweight patients with schizophrenia. Similarly, there is a good 
database to support the efficacy of lorcaserin for weight loss, but not yet in people with 
schizophrenia. If subjects are randomized to the lorcaserin/metformin combination treatment or 
to lorcaserin monotherapy, then they may benefit from the treatment, in addition to the behavioral 
intervention that all subjects will receive. For any subjects that experience weight loss during the 
study, it is uncertain whether they can maintain their weight loss after the end of the study. 
However, the behavioral modification program that all subjects received during the study may be 
associated with more enduring beneficial effects for those subjects that continue to implement 
these in their daily life routine. 
 
8.2.3. Risk/benefit ratio 
The risks associated with participation in this study include benign but relatively frequent 
gastrointestinal-related side-effects (e.g. diarrhea, nausea/vomiting, and flatulence) that occur 
early in the course of metformin treatment and usually disappear with the first week of continued 
treatment. A rare but very serious side-effect is lactic acidosis which occurs in about 3 in 100,000 
patient years with about 50% mortality rate. While lactic acidosis is very serious, it primarily occurs 
in diabetic patients with renal insufficiency, in the setting of multiple serious surgical and medical 
conditions, including congestive heart failure, and in alcohol abuse. The risk of lactic acidosis 
increases with age and degree of renal dysfunction. Given these known risk factors of lactic 
acidosis, the risk of developing lactic acidosis in the current study is limited further by excluding 
any patients that have one or more of these risk factors or laboratory evidence of reduced renal 
function. The risk of serotonin syndrome may be increased with the use of lorcaserin. Serotonin 
syndrome is a rare but serious side effect that is characterized by a constellation of signs and 
symptoms that can include tachycardia, agitation, confusion, hypertension, rigidity, tremor, 
hyperpyrexia, and hyperreflexia. One probable case and one possible case of serotonin syndrome 
were identified among 3,400 subjects who received lorcaserin in the FDA registration trials. 
Targeted side effect monitoring aimed at detecting serotonin syndrome, or less fulminant 
serotonin excess, will be performed at each study visit. Furthermore, as part of the behavioral 
intervention, each subject will be contacted via telephone weekly or biweekly and subjects will 
also be screening for serotonin excess at those points of contact. 
Participants could potentially benefit by receiving a medication treatment that, in combination with 
behavioral modification, is effective in reducing their weight, and could result in reduced morbidity 
and risk of other medical conditions.  It is judged that the benefits which subjects will receive from 

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
Protocol v 1.0 
44 
closely monitored treatment, in addition to the societal benefits of important treatment data 
concerning a disorder with substantial morbidity and mortality, reasonably outweigh the risks to 
participating subjects. 
8.2.4. Subject Payments 
Participants will receive a payment ($45 for each visit, plus an additional $5 for visits when 
medication bottles are brought in) for each scheduled study visit attended to help compensate for 
effort and for transportation costs.  
8.2.5. Costs to Patients 
No participant or third party payer will be charged for visits, study medications, or assessments 
related only to this research project.  
8.3. 
INSTITUTIONAL REVIEW BOARD (IRB) CONSIDERATIONS 
Before study initiation, site investigators will be required to have written and dated approval from 
an IRB for the protocol, consent form, subject recruitment materials/process and any other written 
information to be provided to subjects.  Site investigator should also provide the IRB with a copy 
of the product labeling for all investigational products used. 
Site investigators should provide the IRB with reports, updates and other information (e.g., safety 
updates, amendments, administrative letters, DSMB letters) according to regulatory requirements 
or Institution procedures. 
8.4. 
INFORMED CONSENT 
Informed consent will be sought using a process of repeated instruction regarding the risks, 
benefits, and nature of the study. Prospective participants will be given an opportunity to ask 
questions and have them answered to their satisfaction.  The informed consent document 
explains, in simple terms, study procedures, risks, and benefits. The document makes clear that 
consent is freely given, that participants are aware of the risks and benefits of the study, and that 
participants are free to withdraw at any time. 
8.5. 
PARTICIPANT CONFIDENTIALITY 
Research staff will use confidentiality procedures consistent with the study protocol described 
herein. All study related documents, medical records and other identifying information will be 
kept in locked cabinets in locked offices. All study related documents (case report forms, source 
documents, lab requisition forms, test tubes etc.) will be coded using a study number and not 
the patient’s name. Research participant’s name or other identifying information will not be kept 
with their case report forms or source documents. The list linking study participants to their 
study numbers will be kept in a separate locked cabinet. All computerized records and 
schedules will be password protected, coded with a subject ID number, so that there will be no 
personal identifying information included on these records. Data will only be presented and 

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
Protocol v 1.0 
45 
published in aggregate form with no personal identifiers. 
8.5.1. Certificate of Confidentiality 
A Certificate of Confidentiality will be obtained for this study.  Certificates of Confidentiality are 
issued by the National Institutes of Health (NIH) to protect identifiable research information from 
forced disclosure. They allow the investigator and others who have access to research records to 
refuse to disclose identifying information on research participants in any civil, criminal, 
administrative, legislative, or other proceeding, whether at the federal, state, or local level. 
Certificates of Confidentiality may be granted for studies collecting information that, if disclosed, 
could have adverse consequences for subjects or damage their financial standing, employability, 
insurability, or reputation. By protecting researchers and institutions from being compelled to 
disclose information that would identify research subjects, Certificates of Confidentiality help 
achieve the research objectives and promote participation in studies by assuring confidentiality 
and privacy to participants.  
9. 
LIST OF ABBREVIATIONS 
Term 
Definition 
AE 
Adverse event 
BMI 
Body Mass Index expressed in kilograms per meter squared (kg/m2) 
CATIE 
Clinical Antipsychotic Trials of Intervention Effectiveness 
CV 
Cardiovascular (disease) 
DM 
Diabetes Mellitus 
DSMB 
Data Safety Monitoring Board 
DSM-IV 
Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition 
DXA 
Dual X-Ray absorptiometry 
FBS 
Fasting Blood Sugar 
GCP 
Good Clinical Practices 
HCG 
Human chronic gonadotropin 
HDL-C 
High density lipoprotein – cholesterol 
ICH 
International Conference on Harmonization 
IEC 
Independent Ethics Committee 
IRB 
Institutional Review Board 
MS 
Metabolic syndrome 
OAE 
Other Significant Adverse Event 
OC 
Observed Case 
2hr OGTT 
Two hour Other Glucose Tolerance Test 
OMR 
Other Medications Record 

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
Protocol v 1.0 
46 
SAE 
Serious Adverse Event 
 
Rating Scales 
Acronym 
Definition 
BPRS 
Brief Psychiatric Rating Scale 
CGI-S 
Clinical Global Impressions-Severity 
C-SSRS 
Columbia Suicide Severity Rating Scale 
EDE-Q 
Eating Disorder Examination Questionnaire 
FCI 
Food Craving Inventory 
SCID 
Structured Clinical Interview for DSM-IV 
SF-12 
Short Form Health Survey 
SURFs 
Service Utilization and Resources Form –Short Form 
TFEQ 
Three-Factor Eating Questionnaire 
 
10. 
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Brar, J.S., Ganguli, R., Pandina, G., Turkoz, I., Berry, S., Mahmoud, R., 2005. Effects of 
behavioral therapy on weight loss in overweight and obese patients with schizophrenia 
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Brown, S., Inskip, H., Barraclough, B., 2000. Causes of the excess mortality of schizophrenia. 
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Correll, C.U., Sikich, L., Reeves, G., Riddle, M., 2013. Metformin for antipsychotic-related 
weight gain and metabolic abnormalities: when, for whom, and for how long? Am J 
Psychiatry; 170:947-952 
Daumit, G.L., Goff, D.C., Meyer, J.M., Davis, V.G., Nasrallah, H.A., McEvoy, J.P., Rosenheck, 
R., Davis, S.M., Hsiao, J.K., Stroup, T.S., Lieberman, J.A., 2008. Antipsychotic effects 
on estimated 10-year coronary heart disease risk in the CATIE schizophrenia study. 
Schizophr.Res. 105, 175-187. 
Daumit, G.L., Dickerson, F.B., Wang, N.Y., Dalcin, A., Jerome, G.J., Anderson, C.A., Young, 
D.R., Frick, K.D., Yu, A., Gennusa, J.V., 3rd, Oefinger, M., Crum, R.M., Charleston, J., 
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behavioral weight-loss intervention in persons with serious mental illness. N Engl J Med; 
368:1594-1602 
De Hert, M., Cohen, D., Bobes, J., Cetkovich-Bakmas, M., Leucht, S., Ndetei, D.M., Newcomer, 
J.W., Uwakwe, R., Asai, I., Moller, H.J., Gautam, S., Detraux, J., Correll, C.U., 2011. 
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and treatment guidelines, plus recommendations at the system and individual level. 
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DeFronzo, R.A., Goodman, A.M., 1995. Efficacy of metformin in patients with non-insulin-
dependent diabetes mellitus. The Multicenter Metformin Study Group. N Engl J Med. 
333, 541-9. 
Dixon, L., Weiden, P., Delahanty, J., Goldberg, R., Postrado, L., Lucksted, A., Lehman, A., 
2000. Prevalence and correlates of diabetes in national schizophrenia samples. 
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Fairburn CG, Beglin SJ., 1994. Assessment of eating disorders: interview or self-report 
questionnaire? The International journal of eating disorders. 4(16):363-370. 
Fidler MC, Sanchez M, Raether B, Weissman NJ, Smith SR, Shanahan WR, Anderson CM, 
2011. A one-year randomized trial of lorcaserin for weight loss in obese and overweight 
adults: the BLOSSOM trial. J Clin Endocrinol Metab; 96:3067-3077. 
Henderson, D.C., Nguyen, D.D., Copeland, P.M., Hayden, D.L., Borba, C.P., Louie, P.M., 
Freudenreich, O., Evins, A.E., Cather, C., Goff, D.C., 2005. Clozapine, diabetes mellitus, 
hyperlipidemia, and cardiovascular risks and mortality: results of a 10-year naturalistic 
study. J Clin Psychiatry. 66, 1116-21. 
Hennekens, C.H., Hennekens, A.R., Hollar, D., Casey, D.E., 2005. Schizophrenia and 
increased risks of cardiovascular disease. Am Heart J. 150, 1115-21. 
Isbister GK, Whyte IM, 2001. Serotonin toxicity and malignant hyperthermia: role of 5-HT2 
receptors. Br J Anaesth. 88; 603. 
Jarskog, L.F., Hamer, R.M., Catellier, D.J., Stewart, D.D., Lavange, L., Ray, N., Golden, L.H., 
Lieberman, J.A., Stroup, T.S., 2013. Metformin for weight loss and metabolic control in 
overweight outpatients with schizophrenia and schizoaffective disorder. Am J Psychiatry; 
170:1032-1040 
Jin H, Meyer JM, Mudaliar S, Jeste DV. Impact of atypical antipsychotic therapy on leptin, 
ghrelin, and adiponectin. Schizophr Res. 2008 Mar;100(1-3):70-85. PubMed PMID: 
18206351. 
Joffe, G., Takala, P., Tchoukhine, E., Hakko, H., Raidma, M., Putkonen, H., Eronen, M., 
Rasanen, P., 2008. Orlistat in clozapine- or olanzapine-treated patients with overweight 
or obesity: a 16-week randomized, double-blind, placebo-controlled trial. J Clin 
Psychiatry; 69:706-711 
Kirpichnikov, D., McFarlane, S.I., Sowers, J.R., 2002. Metformin: an update. Ann Intern Med. 
137, 25-33. 
Knowler, W.C., Barrett-Connor, E., Fowler, S.E., Hamman, R.F., Lachin, J.M., Walker, E.A., 
Nathan, D.M., 2002. Reduction in the incidence of type 2 diabetes with lifestyle 
intervention or metformin. N Engl J Med. 346, 393-403. 
Lieberman, J.A., Stroup, T.S., McEvoy, J.P., Swartz, M.S., Rosenheck, R.A., Perkins, D.O., 
Keefe, R.S., Davis, S.M., Davis, C.E., Lebowitz, B.D., Severe, J., Hsiao, J.K., 2005. 
Effectiveness of antipsychotic drugs in patients with chronic schizophrenia. 
N.Engl.J.Med. 353, 1209-1223. 
Mannucci, E., Ognibene, A., Cremasco, F., Bardini, G., Mencucci, A., Pierazzuoli, E., Ciani, S., 
Messeri, G., Rotella, C.M., 2001. Effect of metformin on glucagon-like peptide 1 (GLP-1) 
and leptin levels in obese nondiabetic subjects. Diabetes Care. 24, 489-94. 
Mitchell AJ, Vancampfort D, Sweers K, van Winkel R, Yu W, De Hert M. 2013. Prevalence of 
metabolic syndrome and metabolic abnormalities in schizophrenia and related disorders 
– a systematic review and meta-analysis. Schizophr Bull; 39:306-318. 
Mizuno Y, Suzuki T, Nakagawa A, Yoshida K, Mimura M, Fleischhacker WW, Uchida H. 2014. 
Pharmacological strategies to counteract antipsychotic-induced weight gain and 
metabolic adverse effects in schizophrenia: a systematic review and meta-analysis. 
Schizophr Bull. March 17 [doi:10.1093/schbul/sbu030, Epub ahead of print]. 
Nisijima K, Yoshino T, Yui K, Katoh S. 2001. Potent serotonin (5-HT)(2A) receptor antagonists 
completely prevent the development of hyperthermia in an animal model of the 5-HT 
syndrome. Brain Res. 890:23-31. 
O'Neil, P.M., Smith, S.R., Weissman, N.J., Fidler, M.C., Sanchez, M., Zhang, J., Raether, B., 
Anderson, C.M., Shanahan, W.R., 2012. Randomized placebo-controlled clinical trial of 
lorcaserin for weight loss in type 2 diabetes mellitus: the BLOOM-DM study. Obesity 
(Silver Spring); 20:1426-1436. 
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Rothman, R.B., Baumann, M.H., Savage, J.E., Rauser, L., McBride, A., Hufeisen, S.J., Roth, 
B.L., 2000. Evidence for possible involvement of 5-HT(2B) receptors in the cardiac 
valvulopathy associated with fenfluramine and other serotonergic medications. 
Circulation; 102:2836-2841. 
Shen JHQ, Zhao Y, Rosenzweig-Lipson S, Popp D, Williams JBW, Giller E, Detke MJ, Kane 
JM, 2014. A 6-week randomized, double-blind, placebo-controlled, comparator 
referenced trial of vabicaserin in acute schizophrenia. J Psychiatric Res; 53:14-22. 
Smith, S.R., Weissman, N.J., Anderson, C.M., Sanchez, M., Chuang, E., Stubbe, S., Bays, H., 
Shanahan, W.R., 2010. Multicenter, placebo-controlled trial of lorcaserin for weight 
management. N Engl J Med; 363:245-256 
Spitzer, R. L., J. B. Williams, et al. (1992). "The Structured Clinical Interview for DSM-III-R 
(SCID). I: History, rationale, and description." Arch Gen Psychiatry 49(8): 624-9. 
Stroup, T.S., McEvoy, J.P., Ring, K.D., Hamer, R.H., LaVange, L.M., Swartz, M.S., Rosenheck, 
R.A., Perkins, D.O., Nussbaum, A.M., Lieberman, J.A., 2011. A randomized trial 
examining the effectiveness of switching from olanzapine, quetiapine, or risperidone to 
aripiprazole to reduce metabolic risk: comparison of antipsychotics for metabolic 
problems (CAMP). Am J Psychiatry. 168, 947-56. 
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disinhibition, and hunger. Journal of Psychosomatic Research. 29, 71-83. 
Tiihonen, J., Lonnqvist, J., Wahlbeck, K., Klaukka, T., Niskanen, L., Tanskanen, A., Haukka, J., 
2009. 11-year follow-up of mortality in patients with schizophrenia: a population-based 
cohort study (FIN11 study). Lancet. 374, 620-7. 
White MA, Whisenhunt BL, Williamson DA, Greenway FL, Netemeyer RG., 2002. Development 
and Validation of the Food-Craving Inventory. Obesity Research. 2(10), 107-114.

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
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Appendix 1. Schedule of Events (Baseline to Week 24) 
a V17 assessments are performed at Wk52 or at any earlier visit at which a subject discontinues 
for any reason. 
b For female subjects of childbearing potential. 
c Eating Disorder Examination Questionnaire (EDE-Q), Three-Factor Eating Questionnaire 
(TFEQ), and Food Craving Inventory (FCI) 
d LFTs = AST, ALT, GGT, and total bilirubin 
 
Assessments 
SCR 
BL 
V0 
WK1 
V1 
WK2 
V2 
WK4 
V3 
WK6 
V4 
WK8 
V5 
WK10 
V6 
WK12 
V7 
WK16 
V8 
WK20 
V9 
WK24 
V10 
Demographics 
X 
  
  
  
  
 
 
  
  
  
  
  
Vital Signs  
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
SCID/Psych + Med Hx/PE 
X 
  
  
  
  
 
 
  
  
  
  
  
Incl/Excl Criteria 
X 
  
  
  
  
 
 
  
  
  
  
  
Study Drug Disp + Adherence 
 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
CGI - Severity 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
BPRS, C-SSRS 
 
X 
 
X 
X 
 
X 
 
X 
X 
X 
X 
Substance Use Scale 
 
X 
 
 
X 
 
X 
 
X 
 
 
X 
Alcohol Use Questionnaire 
 
X 
 
 
X 
 
X 
 
X 
 
 
X 
Other Meds Record 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Adverse Events/Side Effects 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Behavioral Intervention 
 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
DXA (Dual X-ray absorptiometry) 
(UNC ONLY) 
 
X 
 
 
 
 
 
 
 
 
 
 
24 hr food recall assessment, 
Accelerometry 
 
X 
 
 
 
 
 
 
 
 
 
X 
EDE-Q, TFEQ, FCI questionnairesc 
 
X 
 
 
 
 
 
 
 
 
 
X 
LABS 
 
Pregnancy testb 
X 
X 
 
 
X 
 
X 
 
X 
X 
X 
X 
Chemistry 
X 
 
 
 
 
 
 
 
 
 
 
X 
CBC w diff 
X 
 
 
 
 
 
 
 
 
 
 
X 
TSH 
X 
 
 
 
 
 
 
 
 
 
 
 
LFTd, creatinine, eGFR 
X 
 
 
 
 
 
 
 
X 
 
 
X 
Urine Drug Screen 
X 
 
 
 
 
 
 
 
 
 
 
X 
Lipid Profile, HbA1c, fasting glucose 
X 
 
 
 
 
 
 
 
X 
 
 
X 
2hr OGTT 
X 
 
 
 
 
 
 
 
 
 
 
 
Post OGTT insulin 
X 
 
 
 
 
 
 
 
 
 
 
 
Insulin, Leptin, Ghrelin, PYY3-36, 
GLP-1 
X 
 
 
 
 
 
 
 
 
 
 
X 

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Appendix 2. Schedule of Events (Week 28 to End-of-Study) 
Assessments 
WK28 
V11 
WK32 
V12 
WK36 
V13 
WK40 
V14 
WK44 
V15 
WK48 
V16 
WK52 
V17a 
Demographics 
 
  
  
  
  
 
  
Vital Signs  
X 
X 
X 
X 
X 
X 
X 
SCID/Psych + Med Hx/PE 
 
  
  
  
  
 
 X  
Incl/Excl Criteria 
 
  
  
  
  
 
  
Study Drug Disp + Adherence 
X 
X 
X 
X 
X 
X 
X 
CGI – Severity 
X 
X 
X 
X 
X 
X 
X 
BPRS, C-SSRS 
X 
X 
X 
X 
X 
X 
X 
Substance Use Scale 
 
X 
  
  
X 
 
X 
Alcohol Use Questionnaire 
 
X 
 
 
X 
 
X 
Other Meds Record 
X 
X 
X 
X 
X 
X 
X 
Adverse Events/Side Effects 
X 
X 
X 
X 
X 
X 
X 
Behavioral Intervention 
X 
X 
X 
X 
X 
X 
X 
DXA (Dual X-ray absorptiometry) 
(UNC ONLY) 
 
 
 
 
 
X 
X* 
24 hr food recall assessment, 
Accelerometry 
 
 
 
 
 
X 
X* 
EDE-Q, TFEQ, FCI questionnairesc 
 
 
 
 
 
 
X 
LABS 
 
Pregnancy testb 
X 
X 
X 
X 
X 
X 
X 
Chemistry 
 
 
 
 
 
 
X 
CBC w diff 
 
 
 
 
 
 
X 
LFTd, creatinine, eGFR 
 
 
X 
 
 
 
X 
Urine Drug Screen 
 
 
 
 
 
 
X 
Lipid Profile, HbA1c, fasting glucose 
 
 
 
 
 
 
X 
2hr OGTT 
 
 
 
 
 
 
X 
Post OGTT insulin 
 
 
 
 
 
 
X 
Insulin,  Leptin, Ghrelin, PYY3-36, 
GLP-1 
 
 
 
 
 
 
X 
a V17 assessments are performed at Wk52 or at any earlier visit at which a subject discontinues 
for any reason. 
b For female subjects of childbearing potential. 
c Eating Disorder Examination Questionnaire (EDE-Q), Three-Factor Eating Questionnaire 
(TFEQ), and Food Craving Inventory (FCI) 
d LFTs = AST, ALT, GGT, and total bilirubin 
*DXA Scan, 24 hour food recall assessment, and accelerometry are ideally completed at Week 
48 but if not done by Week 52 can be done at end of study visit. 
 
 

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Appendix 3. DSM-IV-TR Criteria for Schizophrenia 
A. Characteristic symptoms: Two (or more) of the following, each present for a significant portion of time 
during a 1-month period (or less if successfully treated):  
 
(1) delusions  
(2) hallucinations  
(3) disorganized speech (e.g., frequent derailment or incoherence)  
(4) grossly disorganized or catatonic behavior 
(5) negative symptoms, i.e., affective flattening, alogia, or avolition  
 
Note: Only one Criterion A symptom is required if delusions are bizarre or hallucinations consist of a 
voice keeping up a running commentary on the person's behavior or thoughts, or two or more voices 
conversing with each other.  
 
B. Social/occupational dysfunction: For a significant portion of the time since the onset of the disturbance, 
one or more major areas of functioning such as work, interpersonal relations, or self-care are markedly 
below the level achieved prior to the onset (or when the onset is in childhood or adolescence, failure to 
achieve expected level of interpersonal, academic, or occupational achievement).  
 
C. Duration: Continuous signs of the disturbance persist for at least 6 months. This 6-month period must 
include at least 1 month of symptoms (or less if successfully treated) that meet Criterion A (i.e., active-
phase symptoms) and may include periods of prodromal or residual symptoms. During these prodromal 
or residual periods, the signs of the disturbance may be manifested by only negative symptoms or two or 
more symptoms listed in Criterion A present in an attenuated form (e.g., odd beliefs, unusual perceptual 
experiences).  
 
D. Schizoaffective and Mood Disorder exclusion: Schizoaffective Disorder and Mood Disorder With 
Psychotic Features have been ruled out because either (1) no Major Depressive, Manic, or Mixed 
Episodes have occurred concurrently with the active-phase symptoms; or (2) if mood episodes have 
occurred during active-phase symptoms, their total duration has been brief relative to the duration of the 
active and residual periods.  
 
E. Substance/general medical condition exclusion: The disturbance is not due to the direct physiological 
effects of a substance (e.g., a drug of abuse, a medication) or a general medical condition.  
 
F. Relationship to a Pervasive Developmental Disorder: If there is a history of Autistic Disorder or another 
Pervasive Developmental Disorder, the additional diagnosis of Schizophrenia is made only if prominent 
delusions or hallucinations are also present for at least a month (or less if successfully treated).  
Classification of longitudinal course (can be applied only after at least 1 year has elapsed since the initial 
onset of active-phase symptoms):  
 
Episodic With Interepisode Residual Symptoms (episodes are defined by the reemergence of 
prominent psychotic symptoms); also specify if: With Prominent Negative Symptoms  
 
Episodic With No Interepisode Residual Symptoms  
 
Continuous (prominent psychotic symptoms are present throughout the period of observation); also 
specify if: With Prominent Negative Symptoms  
 
Single Episode In Partial Remission; also specify if: With Prominent Negative Symptoms  
 
Single Episode In Full Remission  
 
Other or Unspecified Pattern 

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Appendix 4. DSM-IV-TR Criteria for Schizoaffective Disorder 
A. An uninterrupted period of illness during which, at some time, there is either a Major Depressive 
Episode, a Manic Episode, or a Mixed Episode concurrent with symptoms that meet Criterion A for 
Schizophrenia.  
 
Note: The Major Depressive Episode must include Criterion A1: depressed mood.  
 
B. During the same period of illness, there have been delusions or hallucinations for at least 2 weeks in 
the absence of prominent mood symptoms.  
 
C. Symptoms that meet criteria for a mood episode are present for a substantial portion of the total 
duration of the active and residual periods of the illness.  
 
D. The disturbance is not due to the direct physiological effects of a substance (e.g., a drug of abuse, a 
medication) or a general medical condition.  
 
Specify type:  
Bipolar Type: if the disturbance includes a Manic or a Mixed Episode (or a Manic or a Mixed Episode 
and Major Depressive Episodes)  
 
Depressive Type: if the disturbance only includes Major Depressive Episodes 

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Appendix 5. BMI Calculation Chart 
 
 
 
 
 

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Appendix 6. Definition of an SAE 
 
Results in death 
Any death resulting from an AE occurring during the trial period or within 30 days after the last 
dose of the trial drug is given.  However, should a death be reported to an investigator at any time 
following the completion or discontinuation/withdrawal of a subject from the trial, including any 
protocol required post-treatment follow-up, the investigator has an obligation to report the serious 
AE if the investigator feels it is related to study drug. 
Life threatening 
The subject must have been at an immediate risk of dying from the AE as it occurred or it was 
suspected that use or continued use of the product would result in the subject’s death.  This does 
not include events that might have caused death if they had occurred in a more serious form (e.g., 
drug-induced hepatitis that resolves without hepatic failure). 
Hospitalization 
Any AE resulting in hospital admission and usually an overnight stay.  The term “prolongs 
hospitalization” means delayed planned or anticipated discharge date (again usually by at least 1 
overnight stay).  Hospital admissions and/or surgical operations planned before or during a trial 
are not considered AEs if the illness or disease existed before the subject was enrolled in the trial, 
provided that it did not deteriorate in an unexpected way during the trial.  Outpatient treatment in 
an emergency room is not in itself a serious AE, although the reasons for it may be (e.g., 
bronchospasm, laryngeal edema).  For the purpose of this trial, hospitalizations for social reasons, 
respite care, elective treatment or surgery, or lack of efficacy will not be regarded as serious AEs.   
Results in persistent or significant disability or incapacity 
Any AE resulting in impairment of, damage to, or disruption in the subject’s body function, 
structure, or both; physical activities; or quality of life. 
Important medical event/medical intervention 
Medical and scientific judgment should be exercised in deciding whether an event is serious in 
situations where important medical events may not be immediately life threatening or result in 
death, hospitalization, disability, or incapacity, but may jeopardize the patient or may require 
medical intervention to prevent 1 or more outcomes listed in the definition of a serious event.  
These should usually be considered serious.  Examples of such events are: 
Angioedema not severe enough to require intubation but requiring intravenous 
hydrocortisone treatment. 
Hepatotoxicity caused by acetaminophen overdose requiring treatment with N-
acetylcysteine. 
Intensive treatment in an emergency room or at home for allergic bronchospasm. 

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Blood dyscrasias (e.g., neutropenia or anemia requiring blood transfusion) or 
convulsions that do not result in hospitalization. 
Development of drug dependency or drug abuse. 
Discontinuation of the trial treatment or of routine administration of prescription medications, or 
changes in their dosages should not be considered medical intervention. 
 
 
 

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Appendix 7. A Guide to Interpreting the Causality Question 
 
The following factors should be considered when deciding if there is a “reasonable possibility” 
that an AE may have been caused by the drug. 
Time Course. Exposure to suspect drug. Has the subject actually received the suspect 
drug? Did the AE occur in a reasonable temporal relationship to the administration of the 
suspect drug? 
Consistency with known drug profile. Was the AE consistent with the previous 
knowledge of the suspect drug (pharmacology and toxicology) or drugs of the same 
pharmacological class? OR could the AE be anticipated from its pharmacological 
properties? 
Dechallenge experience. Did the AE resolve or improve on stopping or reducing the 
dose of the suspect drug? 
No alternative cause. The AE cannot be reasonably explained by another etiology such 
as the underlying disease, other drugs, other host or environmental factors. 
Rechallenge experience. Did the AE reoccur if the suspected drug was reintroduced 
after having been stopped?  
Laboratory tests. A specific laboratory investigation (if performed) has confirmed the 
relationship. 
 
A “reasonable possibility” could be considered to exist for an AE where one or more of these 
factors exist. 
In contrast, there would not be a “reasonable possibility” of causality if none of the above criteria 
apply or where there is evidence of exposure and a reasonable time course but any dechallenge 
(if performed) is negative or ambiguous or there is another more likely cause of the AE. 
In difficult cases, other factors could be considered such as: 
Is this a recognized feature of overdose of the drug? 
Is there a known mechanism? 
 
Ambiguous cases should be considered as being a “reasonable possibility” of a causal 
relationship unless further evidence becomes available to refute this 
 
  

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Appendix 8.  
 
 
 
Individual Behavioral Treatment  
for  
Antipsychotic-Induced Weight Gain in Schizophrenia 
 
 
Adapted from 
 
A BEHAVIORAL GROUP-BASED TREATMENT FOR WEIGHT 
REDUCTION IN SCHIZOPHRENIA AND OTHER SEVERE 
MENTAL ILLNESSES 
Rohan Ganguli, M.D. 
Jaspreet Singh Brar, M.B.B.S., MPH 
University of Pittsburgh School of Medicine 

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Schedule of Events 
 
Week 1 
Self-monitoring: Awareness of Body Weight and What One Eats 
 
Week 2 
Burning Calories by Exercise 
 
Week 3 
Phone reinforcement 
 
Week 4 
Controlling Urges to Overeat and Snack 
 
Week 5 
Phone reinforcement 
 
Week 6 
Burning Calories by Using Energy 
 
Week 7 
Phone reinforcement 
 
Week 8 
Decreasing Food Cues to Overeat and Snack 
 
Week 9 
Phone reinforcement 
 
Week 10 
Developing good eating habits 
 
Week 11 
Phone reinforcement 
 
Week 12 
Self-control of overeating 
 
Week 13 
Phone reinforcement 
 
Week 14 
Changing snack habits 
 
Week 15 
Phone reinforcement 
 
 
Introduction 
This is a behavioral intervention designed to help people with schizophrenia and schizoaffective 
disorder lose weight and lower their risk for heart disease.   There are a total of 8 in-person 
sessions and 7 phone sessions.  In-person sessions should be part of the study visit and should 
take about a half-hour (approximately 10 minutes weigh-in/homework check, 10 minutes 
instruction, 10 minutes review).  Phone sessions should take 10-15 minutes.   
At each session, the clinician starts by checking the participant’s homework and weight.   If the 
participant is achieving their goals, give plenty of positive reinforcement.  If the participant is not 
meeting their goals, see if you can think of creative ways to find success or see if you can revise 
the goal to make it more achievable for the participant.  Next, the clinician “teaches” the lesson 
for the day.  The lessons are written as scripts, but the wording can be revised so it feels 
comfortable for the clinician.  Finally, during the review phase, the participant should be able to 
demonstrate understanding of the lesson as well as the homework that should be done in the 
coming weeks. 
At each session, participants receive a diary in which they record their homework and their 
progress.  Participants receive a new diary for each session and hand in the diary from the 
previous session.   

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Week 1 
Self Monitoring: Awareness of Body Weight and What One Eats 
Begin by orienting participant to program and setting weight loss goals (Appendix A). 
 
Lesson: 
Food is like fuel that is required for play, work, and exercise.  There is a close relationship 
between what you eat, how much energy you use, and how much you weigh.  If you take in 
more food than you can use for work, play, or exercise, you gain weight.  If you take in less food 
than you use for work, play, or exercise, you lose weight.  If you eat just enough food for your 
work, play, or exercise, then your weight will stay the same. 
 
Many overweight people don’t realize how much food they actually eat each day.  Also, they 
may not realize that the food they eat might be high in calories (“fatty” foods).  One way to help 
people recognize how much they eat is to have them keep a record of everything they eat 
throughout the day.  This can help people lose weight by helping them realize how much they 
eat, and by serving as a reminder to eat less. 
 
We’d like for you to record what you eat each day and also to record your weight every day.  
Again, this serves two purposes:  1) it will point out the relationship between how much you eat 
and how it affects your weight, and 2) it will be a reminder to you that you are dieting and should 
eat less. 
 
In order to record what you eat and your weight, we have a diary for you to use.    We’ve also 
included some descriptions of which foods belong to which food groups and what an average 
serving size looks like (Appendix B).  It is important to weigh yourself on the same scale, at the 
same time of day, and with the same amount of clothes on.  It is also important to complete the 
Record of Daily Food Eaten before all meals and snacks.  Do you have any questions about 
how to use the diary? 
 
Before we end today’s session, let’s look at some common problems that people have when 
trying to lose weight and what some solutions might be: 
 
Problem Eating Patterns & Solutions 
1. 
Skipping breakfast or having a light breakfast 
Solution: Must eat all meals, but less quantity 
2. 
Not eating vegetables or fruit 
Solution:  You need a balanced diet. You should eat vegetables at lunch and supper and 
fruit at all meals 
3. 
Snacking heavily, especially when meals have been skipped 
Solution:  Snack foods are generally high in calories. You should eat three meals a day, 
evenly spaced 
4. 
Drinking two to three cans of soda a day 
Solution: Cut down to one can a day and switch to diet soda.  Drink more water instead of 
soda 
5. 
Snacking / heavy eating on weekends 

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Solution:  One tends to eat more because there is more free time on weekends. You 
should engage in more physical activities and reduce sitting activities (eg watching TV) 
6. 
Excessive eating of candy, cake, ice cream, and potato chips, etc 
Solution:  Decrease the amount of each by half (eg. Cut down from two candy bars per 
day to one) 
7. 
Excessive cereal / bread eating 
Solution:  You may tend to fill yourself up on these. Cut down to half. Serve half-pieces of 
toast, rolls, or buns. Buy cereal with fewer calories 
It is also very important to remember that not all people lose weight the same way.  Some lose 
weight steadily and others lose weight in spurts.   Also, there are times when your weight might 
stay the same for days or sometimes for a week.  Don’t get discouraged if you’re not losing 
weight quickly.  If you eat less food than you need for energy to work, play, and exercise, you 
will lose weight! 
 
Homework 
Remember, your homework for next week is to: 
1. 
Write down what you eat before all meals and snacks. 
2. 
Weigh yourself at the same time every day and record your weight as well as how far 
you’ve walked. 
3. 
Read the instruction sheet in your diary at least once a day (you should read it more 
often if you want). 

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Week 2 
Burning Calories by Exercise 
Lesson: 
People today tend to burn fewer calories than they did years ago.  Some of the reasons for this 
are that we have modern appliances (eg, dishwashers and vacuum cleaners) to ease our work 
in the home; we have jobs in which machinery does most of the work automatically; we often 
use cars or buses instead of walking or riding a bike; and we spend a lot of time sitting and 
watching TV.  As a result of these modern conveniences, we are less active and we burn fewer 
calories.  This situation usually leads to weight gain.  One way for people to change this 
situation is to increase their activity levels.  We can increase our activity levels by 1) doing daily 
exercise and 2) using energy. 
 
Many people believe that exercising increases one’s appetite.  This is not true.  So you don’t 
have to worry that exercising will make you hungry and make you want to eat more.  People 
often ask how much they need to exercise in order to lose weight.  The answer depends on 
what kind of exercise you do.  We have a chart that shows how many calories you burn doing 
different kinds of exercise (Appendix C).  In order to be effective, exercise must be done 
regularly over a long period of time.  We’d like you to schedule two 10-minute exercise periods 
each day to start.  One exercise period should be before breakfast and the second should be 
before your evening meal. 
 
Each week, you should try to increase your total exercise time by 5 minutes.  This week, you’ll 
do two 10-minute exercises each day, for a total of 20 minutes.  Next week, you can do one 10-
minute period and one 15-minute period, for a total of 25 minutes.  If it’s more convenient, you 
can do all of your exercise at one time during the day.  It’s a great idea to plan to exercise with a 
friend – that way you’ll both be more likely to do it. 
 
Homework 
Remember, your homework for next week is to: 
1. 
Write down what you eat before all meals and snacks. 
2. 
Record weight and pedometer daily 
3. 
Choose 3 different exercises and do them twice each day! 
Week 3 
Phone reinforcement  
Talk with patient by phone to assess progress.  Trouble-shoot if there are problems, otherwise 
encourage continued success. 

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Week 4 
Controlling Urges to Overeat and Snack 
Lesson: 
Many overweight individuals have frequent urges to overeat.  Unfortunately, they often give-in to 
these urges, which results in more calories being consumed and more weight being gained.  
These eating urges may come at any time throughout the day. The urges to eat tend to be 
stronger at certain times or places. For example, eating urges may appear in mid-morning when 
breakfast has been missed or when one is shopping at the mall and passes by an ice cream or 
candy store. 
 
You can stop, or at least delay, an urge to overeat or snack if you use positive self-talk.  For 
example, you might be walking by a donut shop and you want to go in and buy a donut.  Before 
going in the store, you could think to yourself, “I know I can walk right by that store without 
buying a donut, and then maybe I’ll fit into those pants I want to wear.”  When you do manage to 
resist these urges, you should compliment yourself.  For example, you could tell yourself “I’m a 
great dieter.”  By praising yourself, you’ll probably feel much better about resisting that urge.  If 
you do this every time you have an urge to overeat or snack, these urges should decrease over 
time. 
These are some common places where people get an urge to overeat or snack: 
At an all you can eat buffet 
At a picnic with lots of food left on the table 
At the end of a meal at home with dessert still on the table 
At a party with a variety of favorite foods available 
At the mall walking by a candy shop 
Walking by an ice-cream shop 
Walking by a vending machine 
Walking by McDonald’s, Wendy’s, Dairy Queen, etc 
 
Can you think of what you could tell yourself in order to resist these urges? 
 
Homework 
Remember, your homework for next week is to: 
1. 
Record weight and pedometer daily 
2. 
Choose 3 different exercises and do them twice each day. 
3. 
Resist the urge to overeat and make a note of when you do! 

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Week 5 
Phone reinforcement  
Talk with patient by phone to assess progress.  Trouble-shoot if there are problems, otherwise 
encourage continued success. 
 
 
 
Week 6 
Burning Calories by Using Energy 
Lesson: 
Another way to burn up food calories is to use energy while carrying out normal, everyday 
activities.  Using energy means doing an activity the long and hard way rather than the short 
and easy way.  For example, walking up a flight of stairs rather than taking the elevator uses 
energy by burning up food calories.  Some ways to use energy are: 
Walk instead of getting a ride to the store 
Stand in lines; do not sit; do not lean against the wall while standing 
Get off the bus at the stop before your stop 
Walk the longest way to the clinic 
Walk fast up hills 
Can you think of other ways to use energy? 
 
Homework 
Remember, your homework for next time is to: 
1. 
Record weight and pedometer daily. 
2. 
Increase your exercise to 15 minutes twice per day. 
3. 
Choose three ways to use energy and do them each day! 
 
Week 7 
Phone Reinforcement 
Talk with patient by phone to assess progress.  Trouble-shoot if there are problems, otherwise 
encourage continued success. 
 

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Week 8 
Decreasing Food Cues to Overeat and Snack 
Lesson: 
Many times, overweight people eat or snack even when they aren’t hungry.  The reason for this 
unnecessary eating is that a large number and variety of food cues are present in most 
individuals’ living environments. The sight and smell of food or eating places are common cues 
to eat. 
 
These food cues can encourage us to eat even when we’re not hungry.  Some examples of this 
are:  1) the sight of a candy shop at the mall, even though you’ve just had lunch; 2) the smell of 
fresh donuts when you’re driving to work; and 3) a cookie jar in the kitchen.  Food cues are 
present everywhere, but some people respond stronger to some cues than others (eg, candy is 
a strong cue for some people, while potato chips are a strong cue for others).   
We want to practice three methods for decreasing the influence of food cues. 
The first method requires you to restrict your eating to one setting in the home and/or work.  
Through consistent practice of this technique, the food cues in other areas will be weakened.  
So if you only eat meals and snacks in the kitchen, you won’t have as much of an urge to snack 
while you’re watching TV in the living room.  Where do you want to eat all your meals and 
snacks? 
 
The second method requires you to restrict how much food you have on your plate.  Most 
people eat all the food on their plate even though they are full.  The food on your plate is a cue 
to eat.  One way to solve this problem is to have one serving of each food at a meal.  This way, 
the food cues will be less than if you took two or three servings of food.  Also, by limiting the 
size of food helpings, fewer calories are consumed, which will lead to weight loss. It is important 
to understand that one helping does not mean an excessive helping. The helping should be of a 
moderate size.  
 
The third method requires that you make eating the only activity during meal time.  You should 
not eat while looking at magazines, walking down the street, watching TV, or listening to music 
in the bedroom.  The purpose for making eating a single activity are that:  (1) eating will become 
a more pleasurable event by itself; and (2) if one frequently eats while also doing other 
activities, these activities soon become strong cues for eating.  As a result, eating will become a 
more distinct and, it is hoped, pleasurable experience by itself.  At the same time the other 
activities mentioned will lose their food eating cue strength. 
 
Homework 
Remember, your homework for next week is to: 
1. 
Record your daily weight and pedometer 
2. 
Record your activities 
3. 
Eat only in designated areas and choose smaller portion sizes. 

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Week 9 
Phone Reinforcement 
Talk with patient by phone to assess progress.  Trouble-shoot if there are problems, otherwise 
encourage continued success. 
 
 
Week 10 
Developing Good Eating Habits 
Lesson: 
Many overweight individuals eat meals very quickly and rarely pause while eating.  These 
people often finish their meals in 5-10 minutes and still feel hungry.  The reason for this is that it 
takes 15-20 minutes before foods are processed sufficiently in the body to reduce feelings of 
hunger.  If a person eats very fast, his/her stomach still feels hungry and the person will 
continue to eat food until his/her stomach feels full.  This is a bad habit that contributes to weight 
gain.  You can change this habit by chewing all food completely and swallowing the food before 
taking another bite.  This technique forces you to lengthen the time in which it takes to eat a 
meal so that your stomach has a chance to feel full. 
Another way to change this habit is to put your utensils down after taking a bite of food.  Don’t 
pick your utensils up to get another bite of food until the food in your mouth has been chewed 
and swallowed.   
 
Homework 
Remember, your homework for next time is to: 
1. 
Record your daily weight and pedometer 
2. 
Record your activities 
3. 
Chew food completely before your next bite 
 
 
Week 11 
Phone reinforcement  
Talk with patient by phone to assess progress.  Trouble-shoot if there are problems, otherwise 
encourage continued success. 

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Week 12 
Self-Control of Overeating 
Lesson: 
In many families, individuals are encouraged from an early age to eat everything on their plate.  
Thus, the food on your plate becomes a cue to eat even though you may be full.  This pattern 
can result in eating more food than you need.  One way to stop or break this practice is to leave 
some food on one’s plate at the end of each meal or snack.  You can either share this food with 
a friend, or save it for another time.   
 
You can start by leaving small amounts of food, like a small bite of toast or a few kernels of 
corn.  You can also start by leaving the foods that are least preferable to you.  As you become 
more successful at leaving food on your plate, you can start to leave larger amounts, and you 
can leave your favorite foods.  Remember, leaving food applies for both meals and snacks. 
 
Homework 
Remember, your homework for next time is to: 
4. 
Record your weight and pedometer daily 
5. 
Add more exercise everyday 
6. 
Leave food on your plate 
 
 
Week 13 
Phone reinforcement  
Talk with patient by phone to assess progress.  Trouble-shoot if there are problems, otherwise 
encourage continued success. 

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Week 14 
Changing Snack Habits 
Lesson: 
Many times, snacking occurs because of the presence of food cues around us rather than 
because of hunger.  Snacking habits must be changed because the excessive food calories 
lead to weight gain. 
 
Cutting back on snacking is difficult to do.  A good way to start is to delay your snack for a brief 
period of time.  At first, you should try to delay your snack by 5-10 minutes and then the delay 
should be gradually increased to 30 or 40 minutes.  If you use this, snacking habits can be 
changed because the food cue that gave you an urge to eat will probably not be present any 
longer. 
 
Another way to cut down on snacking is to engage in a favorite activity instead of snacking.  
When you have an urge to snack, you can say to yourself, “No, instead of snacking I’ll go for a 
walk or call a friend”.  By engaging in a favorite activity instead of snacking, you won’t feel like 
you’re missing out on a pleasurable activity.  What are three activities you can do instead of 
snacking? 
 
A third way to cut down on snacking is to substitute low-calorie foods as much as possible when 
you snack.  A list of low-calorie foods is: 
 
Liquid 
10 
ounces of water 
10 
ounces of diet beverage 
10 ounces of iced tea with artificial sweetener 
A cup of caffeine free coffee without sugar 
Solid 
Popcorn without butter, low-salt crackers, saltines, pretzels, rice cakes, etc 
Fresh Fruits :  apple, grapefruit, oranges, strawberries, blueberries, cantaloupe, etc 
Vegetables : celery sticks, carrots 
 
We hope that all of these techniques worked for you, but chances are that some strategies 
worked better than others.  The best way to increase the success you’ve had is to continue 
doing what works.   
 
Remember that the only way to lose weight is to decrease the food you eat and increase the 
calories you burn.  How you decrease your intake and increase your output is up to you.   
Let’s take some time to review your goals and see how you did.  Did you lose the weight you 
wanted to lose?  If not, did you follow the lessons and complete your homework?  If so, which 
strategies did you find most helpful?  Do you think you’ll continue to use these strategies?  
Your homework for this session is simply to continue what works.  If any of the worksheets 
might be helpful in continuing your success, we can make some copies for you. 
 
 
 

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Homework 
Remember, your homework for next time is : 
1. 
Record your weight and pedometer daily 
2. 
Add more exercise everyday 
3. 
Delay snacking  

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Week 15 
Phone Reinforcement 
Talk with patient by phone to assess progress.  Trouble-shoot if there are problems, otherwise 
encourage continued success. 
 
 
 
Weight Loss Goals 
 
~ Weekly: 
 
► Week 1 through Week 4     = _______ lbs. 
► Week 5 through Week 12   = _______ lbs. 
► Week 13 through Week 20 = _______ lbs. 
► Week 21 through Week 28 = _______ lbs. 
          Average weight loss is 0.5-1 pound per week 
 
 
 
 
~ Target:  
 
► Current weight     = _______ lbs. 
► Total weight loss = _______ lbs. 
► Target weight       = _______ lbs. 

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Week 1 Homework 
 
Daily Weight and Pedometer Record 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Reminders:   
Record at same time of day, same scale, same clothes. 
Reset pedometer after each reading. 
 
Daily Food Eaten Record 
Awareness of What One Eats 
Date 
Meal 
Meat, 
Fish, 
Eggs 
Bread,  
Cereal,  
Pasta,  
Rice, 
Potato
es/ 
Fries 
Vegetables 
Fruit 
Cake, 
Cookies, 
Candy, 
Ice 
Cream 
Chips 
(1bag= 
1oz.) 
Popcorn, 
crackers 
Soda 
Tea, 
coffee 
Milk,  
Cheese 
Other 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
Mark an “X” for each serving of food eaten.  Must be completed BEFORE meals and snacks. Must ALSO be completed 
AFTER meals and snacks. 
 
 

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Week 2 Homework 
 
Daily Weight and Pedometer Record 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Reminders:   
Record at same time of day, same scale, same clothes. 
Reset pedometer after each reading. 
 
Daily Food Eaten Record 
Awareness of What One Eats 
Date 
Meal 
Meat, 
Fish, 
Eggs 
Bread,  
Cereal,  
Pasta,  
Rice, 
Potato
es/ 
Fries 
Vegetables 
Fruit 
Cake, 
Cookies, 
Candy, 
Ice 
Cream 
Chips 
(1bag= 
1oz.) 
Popcorn, 
crackers 
Soda 
Tea, 
coffee 
Milk,  
Cheese 
Other 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
 
Breakfast 
 
 
 
 
 
 
 
 
 
 
 
 
Lunch 
 
 
 
 
 
 
 
 
 
 
 
__/__/__ 
Dinner 
 
 
 
 
 
 
 
 
 
 
 
 
Snack 
 
 
 
 
 
 
 
 
 
 
 
Mark an “X” for each serving of food eaten.  Must be completed BEFORE meals and snacks. Must ALSO be completed 
AFTER meals and snacks. 
 

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Exercise Habit Record 
Burning Calories Through Exercise 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
10 min. exercise am 
 
 
 
 
 
 
 
10 min exercise pm 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
10 min. exercise am 
 
 
 
 
 
 
 
10 min exercise pm 
 
 
 
 
 
 
 
Mark an “X” for each time you complete your exercise 
 

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Week 4 Homework 
 
Daily Weight and Pedometer Record 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Record at same time of day, same scale, same clothes. 
Reset pedometer after each reading. 
Exercise Habit Record 
Burning Calories Through Exercise 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
10 min. exercise am 
 
 
 
 
 
 
 
10 min exercise pm 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
10 min. exercise am 
 
 
 
 
 
 
 
10 min exercise pm 
 
 
 
 
 
 
 
Mark an “X” for each time you complete your exercise 
 
Eating Habit Record 
Resisting Urges through Self-talk 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Resisted Urge to 
Overeat 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Resisted Urge to 
Overeat 
 
 
 
 
 
 
 
Mark an “X” for each time you resist the urge to overeat or snack using positive self-talk 

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Week 6 Homework 
 
Daily Weight and Pedometer Record 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Record at same time of day, same scale, same clothes. 
Reset pedometer after each reading. 
 
Exercise Habit Record 
Burning Calories Through Exercise 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
15 min. exercise am 
 
 
 
 
 
 
 
15 min exercise pm 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
15 min. exercise am 
 
 
 
 
 
 
 
15 min exercise pm 
 
 
 
 
 
 
 
Mark an “X” for each time you complete your exercise 
 
 

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Activity Habit Record 
Choosing to Use More Energy 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Get off bus early 
 
 
 
 
 
 
 
Take stairs instead of 
elevator 
 
 
 
 
 
 
 
Walk instead of driving 
 
 
 
 
 
 
 
Walk fast up hills 
 
 
 
 
 
 
 
Walk the long way 
 
 
 
 
 
 
 
Stand instead of sitting 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Get off bus early 
 
 
 
 
 
 
 
Take stairs instead of 
elevator 
 
 
 
 
 
 
 
Walk instead of driving 
 
 
 
 
 
 
 
Walk fast up hills 
 
 
 
 
 
 
 
Walk the long way 
 
 
 
 
 
 
 
Stand instead of sitting 
 
 
 
 
 
 
 
Mark an “X” for each time you use this strategy 
 
Week 8 Homework 
 
Daily Weight and Pedometer Record 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Record at same time of day, same scale, same clothes. 
Reset pedometer after each reading. 
 
Exercise Habit Record 
Burning Calories Through Exercise 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
20 min. exercise am 
 
 
 
 
 
 
 
20 min exercise pm 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
20 min. exercise am 
 
 
 
 
 
 
 
20 min exercise pm 
 
 
 
 
 
 
 
Mark an “X” for each time you complete your exercise 

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Activity Habit Record 
Choosing to Use More Energy 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Get off bus early 
 
 
 
 
 
 
 
Take stairs instead of 
elevator 
 
 
 
 
 
 
 
Walk instead of driving 
 
 
 
 
 
 
 
Walk fast up hills 
 
 
 
 
 
 
 
Walk the long way 
 
 
 
 
 
 
 
Stand instead of sitting 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Get off bus early 
 
 
 
 
 
 
 
Take stairs instead of 
elevator 
 
 
 
 
 
 
 
Walk instead of driving 
 
 
 
 
 
 
 
Walk fast up hills 
 
 
 
 
 
 
 
Walk the long way 
 
 
 
 
 
 
 
Stand instead of sitting 
 
 
 
 
 
 
 
Mark an “X” for each time you use this strategy 
 
 
Week 10 Homework 
 
Daily Weight and Pedometer Record 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Record at same time of day, same scale, same clothes. 
Reset pedometer after each reading. 
 
Exercise Habit Record 
Burning Calories Through Exercise 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
25 min. exercise am 
 
 
 
 
 
 
 
25 min exercise pm 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
25 min. exercise am 
 
 
 
 
 
 
 
25 min exercise pm 
 
 
 
 
 
 
 
Mark an “X” for each time you complete your exercise 

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Eating Habit Record 
Decreasing Food Cues to Overeat and Snack 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Resist Urge through 
self-talk 
 
 
 
 
 
 
 
Limit eating to 1 or 2 
locations 
 
 
 
 
 
 
 
Limit to 1 serving 
 
 
 
 
 
 
 
No other activities at 
meal time 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Resist Urge through 
self-talk 
 
 
 
 
 
 
 
Limit eating to 1 or 2 
locations 
 
 
 
 
 
 
 
Limit to 1 serving 
 
 
 
 
 
 
 
No other activities at 
meal time 
 
 
 
 
 
 
 
Mark an “X” for each time you use this strategy 
 
Week 12 Homework 
 
 
Daily Weight and Pedometer Record 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Record at same time of day, same scale, same clothes. 
Reset pedometer after each reading. 
 
Exercise Habit Record 
Burning Calories Through Exercise 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
30 min. exercise am 
 
 
 
 
 
 
 
30 min exercise pm 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
30 min. exercise am 
 
 
 
 
 
 
 
30 min exercise pm 
 
 
 
 
 
 
 
Mark an “X” for each time you complete your exercise 

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Eating Habit Record 
Decreasing Food Cues to Overeat and Snack 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Resist Urge through 
self-talk 
 
 
 
 
 
 
 
Limit eating to 1 or 2 
locations 
 
 
 
 
 
 
 
Limit to 1 serving 
 
 
 
 
 
 
 
No other activities at 
meal time 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Resist Urge through 
self-talk 
 
 
 
 
 
 
 
Limit eating to 1 or 2 
locations 
 
 
 
 
 
 
 
Limit to 1 serving 
 
 
 
 
 
 
 
No other activities at 
meal time 
 
 
 
 
 
 
 
Mark an “X” for each time you use this strategy 
 
Week 14 Homework 
 
 
Daily Weight and Pedometer Record 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Weight 
 
 
 
 
 
 
 
Pedometer 
 
 
 
 
 
 
 
Record at same time of day, same scale, same clothes. 
Reset pedometer after each reading. 
 
Exercise Habit Record 
Burning Calories Through Exercise 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
30 min. exercise am 
 
 
 
 
 
 
 
30 min exercise pm 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
30 min. exercise am 
 
 
 
 
 
 
 
30 min exercise pm 
 
 
 
 
 
 
 
Mark an “X” for each time you complete your exercise 
 

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Eating Habit Record 
Decreasing Food Cues to Overeat and Snack 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Resist Urge through 
self-talk 
 
 
 
 
 
 
 
Limit eating to 1 or 2 
locations 
 
 
 
 
 
 
 
Limit to 1 serving 
 
 
 
 
 
 
 
No other activities at 
meal time 
 
 
 
 
 
 
 
Chew food completely 
 
 
 
 
 
 
 
Put utensils down 
before next bite 
 
 
 
 
 
 
 
Leave food on plate 
 
 
 
 
 
 
 
Date 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
__/__/__ 
Resist Urge through 
self-talk 
 
 
 
 
 
 
 
Limit eating to 1 or 2 
locations 
 
 
 
 
 
 
 
Limit to 1 serving 
 
 
 
 
 
 
 
No other activities at 
meal time 
 
 
 
 
 
 
 
Chew food completely 
 
 
 
 
 
 
 
Put utensils down 
before next bite 
 
 
 
 
 
 
 
Leave food on plate 
 
 
 
 
 
 
 
Mark an “X” for each time you use this strategy 
 
 

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Appendix B 
Food Groups and Serving Sizes 
 
Serving Size: Visualize the Right Portion Size  
 
Healthy eating includes making healthful food choices and understanding serving sizes.  
It can be difficult to visualize a half-cup or three ounces, let alone "one serving." Here are some 
everyday comparisons to help you figure out your serving sizes: 
 
A teaspoon of margarine is the size of the tip of your thumb to the first joint  
 
Three ounces of meat is the size of a deck of cards  
 
One cup of pasta is the size of a tennis ball  
 
One half of a medium bagel is the size of a hockey puck  
 
An ounce and a half of cheese is the size of three dominoes  
 
Two tablespoons of peanut butter are the size of a ping pong ball  
 
One-half cup of vegetables is the size of a light bulb. 
Once you get a good sense of serving sizes, you can compare them to the amount you eat and 
make any necessary modifications.   
 
From the American Dietetic Association.  Accessed at http://www.eatright.org/cps/rde/xchg/SID-5303FFEA-
4134E4E1/ada/hs.xsl/home_4367_ENU_HTML.htm. November 17, 2005 
 
 
Food Groups 
One Serving Size Equals... 
Breads, Cereals, Rice, Pasta, 
and other Grains Group 
 
1 slice bread or 1/2 bagel the size of a hockey 
puck.  
 
1/2 cup cooked rice equals a cupcake wrapper.  
 
1/2 cup pasta equals an ice cream scoop.  
Fruit and Vegetable Groups 
 
One fruit and vegetable serving is equal to one 
piece the size of a tennis ball or 1/2 cup the size of 
a light bulb.  
Meat, Chicken, Fish, Dry Beans 
and Peas, Eggs, and Nuts Group 
 
3 ounces lean meat, chicken, or fish measures up 
to a deck of cards or a check book.  
Dairy Group 
 
1 ounce cheese equals about 4 dice.  
Fats, Oils, and Sweets Group 
 
Use sparingly. For a teaspoon of fat, look to the tip 
of your thumb.  
This tip sheet is adapted from American Dietetic Association, Eat Right Minute Nutrition Tip of the Day located at www.eatright.org 
Accessed at http://nhlbisupport.com/chd1/Tipsheets/sevenways.htm, November 17, 2005 
 

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Food Groups:  
Group 1 - MEAT, POULTRY, FISH, DRY BEANS, EGGS & NUTS GROUP 
 
This group provides: 
 
*Meat, Poultry and Fish supply: Protein, B-Vitamins, Iron and Zinc 
*Dry beans, eggs and nuts are similar to meat.  They provide protein and most vitamins and 
minerals 
 
Selection Tips: 
 
*Choose lean meat, chicken without skin, fish, dry beans and peas.  These are lowest in fat 
*Prepare meats in low-fat ways: 
Trim all the fat you can see 
Broil, roast or boil these foods instead of frying them 
*Go easy on egg yolks, they are high in cholesterol.  Use only 1 egg yolk per person in egg 
dishes.  Make larger portions by adding extra egg whites. 
*Nuts and seeds are high in fat, so eat them in moderation 
 
 
Group 2 - BREAD, CEREAL, RICE & PASTA GROUP 
 
 
This group provides: 
 
*Carbohydrates (i.e. starches): An important source of energy 
*Vitamins and Minerals 
*Fiber (i.e. whole wheat bread and whole grain cereal) 
 
Selection Tips:  
 
*Try to eat foods without fat or sugar (i.e., bread, English muffins, rice, or pasta) 
*Baked goods made from flour are part of this food group, but are high in fat and sugar (cookies, 
cakes, pastries) 
*Go easy on fats and sugars that you add yourself (i.e., butter, margarine, sour cream, syrup) 
 
 
Group 3 - VEGETABLE GROUP 
 
This group provides: 
*Vitamins and Minerals: Vegetables are rich in vitamins A and C and minerals such as iron and 
magnesium 
*Fiber 
*Are naturally low in fat  
 
Selection Tips: 
 

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*Eat a variety of vegetables to provide different nutrients. 
*Legumes also provide protein.  They can be used in place of meat 
*Go easy on the fats you add.  Spreads and toppings, such as mayonnaise and salad dressing 
count as fat 
Group 4 - FRUIT GROUP 
 
 
This group provides: 
 
 
*Important vitamins like A and C, and minerals like potassium 
*Low in fat and sodium 
*A good natural source of carbohydrates for quick energy 
*Assist in appetite control 
*Fiber 
 
Selection Tips: 
 
*Choose fresh fruits, fruit juices and frozen, canned, or dried fruit.  Pass up fruit canned or 
frozen in heavy syrups and sweetened fruit juices 
*Eat whole fruits often they are higher in fiber than fruit juices 
*Have citrus fruits, melons, and berries regularly.  They are rich in vitamin C 
*Count only 100% fruit juice as fruit.  Punches, Kool-Aid and most fruit drinks contain only a little 
juice and lots of added sugars.  Grape and orange sodas don’t count as fruit juice 
 
 
Group 5 - MILK, YOGURT & CHEESE GROUP 
 
This group provides: 
 
*Protein, vitamins, minerals and calcium 
*2 servings are right for most people 
 
 
Selection Tips: 
 
*Choose skim milk and nonfat yogurt.  They are lowest in fat 
*1 to 2 ounces of cheese or 8 ounces of yogurt count as a serving, they supply the same 
amount of calcium as 1 cup of milk 
*Cottage cheese is lower in calcium than most cheeses.  1 cup counts as only ½ serving of milk 
*Go easy on high fat cheese and ice cream. They can add a lot of fat to your diet 
*Choose “part skim” or low-fat cheese when available and lower fat milk desserts, like frozen 
yogurt 
 
Group 6 - FATS AND OILS (USE SPARINGLY) 
This group can cause problems: 
 
 
*Increase risk of heart disease 
*Supplies calories but little or no vitamins and minerals 
 
 
Selection Tips: 

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*Use unsaturated vegetable oils and margarine that list a liquid vegetable oil as the first 
ingredient on the label 
*When eating out, you cannot control actual food preparation, but you can control your food 
selection.  Choose foods with ingredients and preparation methods that have low fat and 
cholesterol 
*Avoid or eat small amounts of fried or deep fried foods (i.e. have a baked potato instead of 
French fries). 
 
Group 7 - SUGAR 
Don’t use too much sugar:  
*A low sugar diet helps keep weight down 
 
*A sugar rich diet contributes to tooth decay 
 
What is sugar: 
White sugar, brown sugar, honey, molasses 
 
Some foods sugar is added to: 
Cookies, Jam, Jelly, Donuts, Canned fruit in syrup, Chocolate bar, Low-fat yogurt, Sherbet, 
Soda, etc. 
 
 

MEtformin and Lorcaserin for WeighT Loss in People with Schizophrenia (MELT) 
 
Protocol v 1.0 
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Appendix C 
Exercise Information 
 
TYPE OF EXERCISE 
CALORIES BURNED PER HOUR 
Sleeping 
55 
Eating 
85 
Sewing 
85 
Knitting 
85 
Sitting 
85 
Standing 
100 
Driving 
110 
Office work 
140 
Housework 
160 
Golf, with trolley 
180 
Golf, without trolley 
240 
Gardening, planting 
250 
Dancing, ballroom 
260 
Walking, 3mph 
280 
Table Tennis 
290 
Gardening, hoeing 
350 
Tennis 
350+ 
Water aerobics 
400 
Skating, rollerblading 
420+ 
Dancing, aerobic 
420+ 
Aerobics 
450+ 
Bicycling, moderate 
450+ 
Jogging, 5mph 
500 
Gardening, digging 
500 
Swimming, active 
500+ 
Cross country ski machine 
500+ 
Hiking 
500+ 
Step Aerobics 
550+ 
Rowing 
550+ 
Power walking 
600+ 
Cycling, studio 
650 
Squash 
650+ 
Skipping rope 
700+ 
Running 
700+