A 26-Week Open-label Safety and Tolerability Extension Study of SEP-363856 in Adult Subjects With Schizophrenia
Phase: PHASE2
Conditions: Schizophrenia
Sponsor: Otsuka Pharmaceutical Development & Commercialization, Inc.

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Protocol SEP361-202, Version 34.00 
SEP-363856 
 
Confidential and Proprietary 
2 
 
13 October 2017 
RESTRICTED DISTRIBUTION OF PROTOCOLS 
This document contains information confidential and/or of proprietary interest to Sumitomo 
Dainippon Pharma Co. Ltd. and/or Sunovion Pharmaceuticals Inc. (including their 
The information cannot be disclosed to any third party or 
predecessors, subsidiaries or affiliates). 
used for any purpose other than the purpose for which it is being submitted without the prior 
written consent of the appropriate Sumitomo Dainippon Pharma company. 
This information is being provided to you for the purpose of conducting a clinical study for 
Sunovion Pharmaceuticals, Inc. You may disclose the contents of this protocol to the study 
personnel under your supervision and to your Institutional Review Board or Independent Ethics 
Committee for the above purpose. You may not disclose the contents of this protocol to any 
other parties, unless such disclosure is required by government regulations or laws, without the 
prior written permission of Sunovion Pharmaceuticals, Inc. 
Any data gathered during the conduct of this protocol and supplemental information (eg, a 
 
protocol amendment) that may be added to this document is also proprietary to Sunovion 
Pharmaceuticals, Inc, and should be handled consistently with that stated above. 

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EMERGENCY CONTACTS 
Table 1: Emergency Contact Information 
Role in Study 
Name 
Contact Information 
Responsible Physician 
 
Head of Global Clinical 
Development, Psychiatry 
Sunovion Pharmaceuticals Inc. 
Telephone: 
 Email: 
Medical Monitor 
 Medical Director Global 
Therapeutic 
QuintilesIMS Inc. 
Office: 
Mobile: 
Email:  
SAE/Pregnancy Reporting 
PPD Pharmacovigilance (PVG) 
Hotline Number: 
 Fax: 
Email:  

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1.
SYNOPSIS
Name of Sponsor/Company: Sunovion Pharmaceuticals, Inc. 
Name of Investigational Product: SEP-363856 
Title of Study: A 26-Week Open-label Safety and Tolerability Extension Study of SEP-363856 in 
Adult Subjects with Schizophrenia 
Proposed Indication: Schizophrenia 
Study Centers: Approximately 35 centers that have participated in Study SEP361-201 
Phase of Development: 2 
Study Objectives: 
Primary: The primary objective of this study is to evaluate the long-term safety and tolerability of 
flexibly dosed SEP-363856 (25, 50, or 75 mg/day [ie, once daily]) in adult subjects with schizophrenia 
who have completed Study SEP361-201 by the incidence of overall adverse events (AEs), serious AEs 
(SAEs), and AEs leading to discontinuation. 
Secondary: 
•
To evaluate the long-term safety and tolerability of SEP-363856 by assessing vital signs,
physical examinations (PE), body weight and body mass index (BMI), 12-lead
electrocardiograms (ECG), clinical laboratory evaluations, and suicidal ideation and
suicidal behavior using the Columbia – Suicide Severity Rating Scale (C-SSRS)
•
To evaluate the long-term effectiveness of SEP-363856 using the Positive and Negative
Syndrome Scale (PANSS) total score, Clinical Global Impression-Severity (CGI-S),
PANSS subscale scores (positive, negative, general psychopathology), Brief Negative
Systems Scale (BNSS), and Montgomery-Asberg Depression Rating Scale (MADRS)
•
To explore the long-term maintenance of response in subjects treated with SEP-363856 as
measured by the time to relapse and the rate of relapse
Other: 
•
To assess whether long-term treatment with SEP-363856 is associated with extrapyramidal
symptoms as measured by the Barnes Akathisia Rating Scale (BARS), the Abnormal
Involuntary Movement Scale (AIMS), and the Simpson-Angus Scale (SAS)
•
To characterize the long-term effects of SEP-363856 as measured by the Drug Effects
Questionnaire (DEQ)
•
To characterize the subjective long-term effects of SEP-363856 on sleep as measured by
the Pittsburgh Sleep Quality Index (PSQI)
•
To explore the effects of SEP-363856 on cognition as assessed by the CogState Brief
Battery (CBB) and the CogState Schizophrenia Battery (CSB)
•
To explore the effects of SEP-363856 on functional outcomes as measured by the UPSA-B
total score
Study Design: 
This is a 26-week, multiregional, open-label extension study designed to evaluate the long-term safety 
and tolerability of SEP-363856 for the treatment of subjects with schizophrenia who have completed 

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the 4-week double-blind treatment phase of Study SEP361-201. 
Subjects who meet the entry criteria will transition immediately from Study SEP361-201 (at Visit 7; 
assessments performed at Study SEP361-201 Visit 7 will serve as the Baseline assessments for the 
present study). Informed consent will be obtained from all subjects before any study procedures are 
performed for the present study. 
Subjects will attend an initial visit on Day 1 (same day as Visit 7 of study SEP361-201). Subjects may 
be hospitalized for the first week of the present study, if deemed appropriate by the Investigator. 
During the treatment period, clinic visits will occur as shown in the following figure, during which the 
procedures outlined in Table 2 will be conducted. Subjects will be seen at weekly intervals for the first 
4 weeks, then every 4 weeks thereafter up to week 26. Telephone calls will be made by a member of 
the clinical research staff to the subjects between scheduled study visits (between Weeks 1 and 2, and 
at Weeks 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, and 25) to monitor clinical symptoms and adverse events. If 
subject appears to be symptomatic, an unscheduled visit will be made as early as possible. Subjects 
who discontinue early from the study or complete study will be required to complete the follow-up visit 
7 days (± 2 days) post last dose of study drug. 
Study Schematic 
Note: Titration up to 75 mg/day is permitted (but not required) on Day 4 for reasons of efficacy as an unscheduled visit.
All subjects will receive open-label SEP-363856 50 mg/day from Day 1 through Day 3. Beginning on 
Day 4, flexible dosing ranging from 25 to 75 mg/day is permitted, if deemed clinically necessary (for 
reasons of safety, tolerability, or efficacy) by the Investigator. On Day 4, subjects are permitted (but 
not required) to titrate up to 75 mg/day for reasons of efficacy. Thereafter, if a dose increase is 
necessary to optimize efficacy it should occur at regular scheduled study visits based on Investigator 
judgement. Day 4 dosing changes will occur at an unscheduled visit. Thereafter, an increase in dose 
should occur at weekly intervals in increments of one dose level at a time to a maximum dose of 
75 mg/day. Dose reduction for tolerability purposes is allowed at any time during the study. 
Safety and tolerability will be monitored throughout the study by collection of physical examination 
results, ECGs, vital signs, AEs, clinical laboratory parameters, C-SSRS, body weight, and BMI. 
Subjects who have any new significant findings or worsening of findings for suicidal ideation or 
behavior upon completion of the C-SSRS at any time during the study must be referred to the 
investigator for follow-up evaluation. 
Subjects who meet any discontinuation/withdrawal criteria will be terminated from the study. Upon 
termination from the study, hospitalization will be allowed for up to 7 days to stabilize the subject, if 
necessary. Prior authorization for hospitalization must be approved by the Medical Monitor. 
Effectiveness will be evaluated using the PANSS total and subscale scores, as well as CGI-S, BNSS, 
and MADRS scores. 
Subjects will provide information on subjective drug effects via administration of the DEQ. In addition, 
effects on movement disorders will be measured using the AIMS, BARS and SAS scales. Subjective 
effects on sleep will be measured by the PSQI scale. Effects on cognition will be assessed by the 
Cogstate Brief Battery (CBB) and the CogState Schizophrenia Battery (CSB), and a functional 

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outcome measure (UPSA-B total score). 
Blood samples for determination of plasma SEP-363856 and SEP-363854 concentrations will be 
collected at Visit 2E, 5E, 8E, and 11E. Population pharmacokinetic (POPPK) analysis will be 
performed using plasma SEP-363856 concentrations; the results of which will be reported separately. 
Inclusion and Exclusion Criteria: 
Inclusion Criteria: 
To qualify for participation, subjects must meet all of the following inclusion criteria: 
1.
Subject must give written informed consent and privacy authorization prior to participation in
the study and able to comply with the protocol, in the opinion of the investigator. Separate
consent will be obtained from a caregiver or legal guardian if required by local law.
2.
Subject has completed Study SEP361-201 through Week 4.
3.
Subject has not taken any medication other than the study drug for the purpose of controlling
schizophrenia symptoms during Study SEP361-201.
4.
Female subject must have a negative urine pregnancy test at Visit 7 of Study SEP361-201;
females who are post-menopausal (defined as at least 12 months of spontaneous amenorrhea)
and those who have undergone hysterectomy or bilateral oophorectomy will be exempted from
the pregnancy test. Female subject of reproductive potential agrees to remain abstinent or use
highly effective and reliable contraception throughout the study and for at least 30 days after
the last dose of study drug has been taken (See Section 21 Appendix II Highly Effective
Contraceptive procedures). In the Investigator's judgment, the subject will adhere to this
requirement.
5.
Male subjects with female partner(s) of childbearing potential must agree to avoid fathering a
child and use highly effective methods of birth control from screening until at least 30 days
after the last study drug administration.
Exclusion Criteria: 
To qualify for participation, subjects must not meet any of the following exclusion criteria: 
1.
Subject answers “yes” to “suicidal ideation” Item 4 (active suicidal ideation with some intent
to act, without specific plan) or Item 5 (active suicidal ideation with specific plan and intent) 
on the C-SSRS assessment at Visit 7 of Study SEP361-201. Subjects who answer “yes” to this 
question must be referred to the Investigator for follow-up evaluation.  
2.
Subject has a clinically significant abnormality including physical examination, vital signs,
ECG, or laboratory test at Visit 7 of Study SEP361-201 that the investigator in consultation 
with the medical monitor considers to be inappropriate to allow participation in the study. 
3.
Subject has a positive urine drug screen (UDS) or breath alcohol test at Visit 7 of
Study SEP361-201. 
4.
Subject is pregnant or lactating.
5.
Subject is at high risk of non-compliance in the Investigator’s opinion.
6.
Subject is in the opinion of the Investigator, unsuitable in any other way to participate in this
study.
Investigational Product, Dosage and Mode of Administration: 
SEP-363856 treatment will be size 0, Swedish-orange capsules (25, 50, or 75 mg/day) administered 
orally once daily. Study drug may be taken with or without food at approximately the same time each 
evening before bed-time. 

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All subjects will be flexibly dosed with SEP-363856 at 25, 50, or 75 mg/day, provided as open-label 
patient packs. 
Duration of Treatment: 26 weeks 
Reference Therapy, Dosage and Mode of Administration:  
Not applicable. 
Concomitant Medications: 
Concomitant Non-psychotropic Medications: 
Medications for short-term treatment of an acute medical condition are allowed after consultation with 
the Medical Monitor. Non-psychotropic medications used to treat mild, chronic medical conditions is 
allowed if the dose and regimen have been stable (± 25%) for at least 30 days. The concomitant 
medication dose may change, as needed, after enrollment (or be discontinued). Β-adrenergic 
antagonists used to treat stable hypertension may be continued. In addition, use of non-prescription 
pain medications (eg, aspirin, acetaminophen) are allowed during all phases of the study provided these 
medications do not have a propensity for psychotropic effects and do not interfere with the evaluation 
of study medication. Female subjects may use oral, patch, or IUD hormonal contraceptives, or 
progestin implant or injection (detailed information on allowed contraceptives are defined in 
Section 21, Appendix II). 
Concomitant Psychotropic Medications: 
All antidepressants and mood stabilizers (eg, lithium, divalproex/valproic acid, carbamazepine, etc.) 
are not allowed during the study. 
Treatment with benztropine (benzotropine outside the US) up to 6 mg/day will be permitted, as needed, 
for movement disorders. In cases where benztropine is not available or a subject has had an inadequate 
response or intolerability to benztropine treatment, the following medications may be used to treat 
acute extrapyramidal symptoms (EPS): biperiden (up to 16 mg/day) or trihexyphenidyl (up to 
15 mg/day) or diphenhydramine (up to 100 mg/day). Treatment with propranolol (up to 120 mg/day) 
will be permitted as needed for akathisia. 
Medications used to treat movement disorders should not be given prophylactically. 
• 
Concomitant use of lorazepam, temazepam, eszopiclone, zopiclone, zaleplon, zolpidem and 
zolpidem CR is permitted at the discretion of the Investigator with the following restrictions: 
o Lorazepam (or equivalent benzodiazepine) is permitted for clinically significant 
anxiety/agitation or as a sedative/hypnotic up to a maximum daily dose of 6 mg/day. 
Intramuscular lorazepam is permitted up to 4 mg/day for acute anxiety/agitation, as 
clinically indicated. Lorazepam should be used sparingly, when clinically required, per 
investigator judgment. 
o Temazepam (≤ 30 mg/day), eszopiclone (≤ 3 mg/day), or zopiclone (≤ 7.5 mg/day), 
zaleplon (≤ 20mg/day), zolpidem (≤ 10 mg/day for males; ≤ 5 mg/day for females), 
and zolpidem CR (≤ 12.5 mg/day for males; ≤ 6.25 mg/day for females) may be 
administered at bedtime for insomnia, as needed. 
o Hypnotic agents should be administered no more than once nightly and should not be 
used in combination. 
The date and time of the last dose taken prior to scheduled efficacy assessments must be recorded at 
each visit. Subjects should be encouraged to avoid taking these medications within 8 hours of 
scheduled efficacy assessments. 
Opioids may be allowed for a limited period of time with prior authorization from the Medical 
Monitor. 
In regions that do not have the specified drugs available, similar drugs at equivalent dosages will be 

Protocol SEP361-202, Version 34.00 
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permitted as described in the Operations Manual or in consultation with the Medical Monitor. 
Subjects should abstain from alcohol through the end of the study. 
Subjects who require treatment with one or more of the restricted concomitant medications (including 
other antipsychotics or anxiolytics [lorazepam or equivalent above protocol-specified limits]) will be 
discontinued (as appropriate) from the study. 
Criteria for Evaluation:  
Primary Endpoints:  
• 
The incidence of overall AEs, SAEs, and AEs leading to discontinuation 
Secondary Endpoints:  
• 
Absolute values and changes from double-blind (DB) Baseline of Study SEP361-201 and 
open-label (OL) Baseline of Study SEP361-202 in clinical laboratory tests (hematology, 
serum chemistry, urinalysis, glucose and lipid panel, prolactin, glycosylated hemoglobin 
(HbA1c) 
• 
Absolute values and changes from DB Baseline of Study SEP361-201 and OL Baseline of 
Study SEP361-202 in clinical evaluations (vital signs body weight, BMI, blood pressure 
[supine and standing], heart rate [supine and standing], 12-lead ECGs) 
• 
Frequency and severity of suicidal ideation and suicidal behavior using the C-SSRS 
• 
Rate of relapse and time to relapse during the 26-week OL period for subjects who 
demonstrated a clinical response to 4 weeks of treatment with SEP-363856. Relapse will 
be defined as the onset of any of the following: 
− 
An increase in PANSS total score ≥ 30% from the PANSS total score at clinical 
response and a CGI-S score ≥ 3; 
− 
Re-hospitalization for worsening of psychosis; 
− 
Emergence of suicidal ideation, homicidal ideation and/or risk of harm to self or 
others. 
• 
Changes from DB Baseline of Study SEP361-201 and OL Baseline of Study SEP361-202 
in PANSS total score and subscale scores (positive, negative, and general 
psychopathology) 
• 
Change from DB Baseline of Study SEP361-201 and OL Baseline of Study SEP361-202 in 
CGI-S score. 
• 
Change from DB Baseline of Study SEP361-201 and OL Baseline of Study SEP361-202 in 
BNSS total score. 
• 
Change from DB Baseline of Study SEP361-201 and OL Baseline of Study SEP361-202 in 
MADRS total score. 
• 
Proportion of subjects who achieve a response, defined as a 20% or greater improvement 
in PANSS total score from the baseline, and calculated using (1) the DB Baseline of Study 
SEP361-201 for subjects assigned to double-blind SEP-363856, and (2) the OL Baseline of 
Study SEP361-202 for subjects assigned to double-blind placebo. 
Other Endpoints:  
• 
Change from DB Baseline of Study SEP361-201 and OL Baseline of Study SEP361-202 in 
BARS, AIMS and SAS scores. 
• 
Absolute visual analogue scale (VAS) scores of the DEQ. 

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• 
Change from DB Baseline of Study SEP361-201 and OL Baseline of Study SEP361-202 in 
PSQI score. 
• 
Change from DB Baseline of Study SEP361-201 and OL Baseline of SEP361-202 in CBB 
composite score 
• 
Change from Week 12 of Study SEP361-202 in CSB composite score at Week 26 
• 
Change from OL Baseline of Study SEP361-202 in UPSA-B total score 
Statistical Methods:  
The analysis of the long-term safety and tolerability, and efficacy will be based on the safety 
population, which includes all subjects who receive at least one dose of study drug during the 26-week 
OL extension period. 
The primary analysis for the study is to assess the incidence of AEs, SAEs, and AEs leading to 
discontinuation. AEs, SAEs, and AEs leading to discontinuation will be summarized by the number 
and percentage of subjects with any AE, and AEs by system organ class and preferred term. AEs will 
be further summarized by severity and by relationship to study drug. The summary of AEs will be 
limited to those AE occurring on or after the first dose (of the 26-week OL extension period) of study 
drug. 
Absolute values and changes from DB Baseline of Study SEP361-201 and OL Baseline of Study 
SEP361-202 in clinical laboratory tests (hematology, serum chemistry, urinalysis, glucose and lipid 
panel, prolactin, glycosylated hemoglobin (HbA1c)) and in clinical evaluations (vital signs, body 
weight, BMI, blood pressure [supine and standing], heart rate [supine and standing], 12-lead ECGs) 
will be summarized descriptively. Changes in physical examinations will also be summarized 
descriptively. The frequency and severity of suicidal ideation and suicidal behavior using the C-SSRS 
will be provided. 
Clinical response to 4 weeks of treatment with SEP-363856 is defined as meeting both of the following 
criteria: (1) a decrease in PANSS total score of ≥ 20% from baseline, and (2) a CGI-S score ≤ 4. For 
subjects assigned to double-blind SEP-363856, clinical response will be evaluated using the Day 29 
data of study SEP361-201, against the DB baseline of study SEP361-201. For subjects assigned to 
double-blind placebo, clinical response will be evaluated using the Day 29 data of study SEP361-202, 
against the OL baseline of study SEP361-202. 
Relapse will be identified programmatically using the pre-defined criteria among subjects who 
demonstrated a clinical response to 4 weeks of treatment with SEP-363856. The rate of relapse will be 
calculated as the proportion of subjects with a relapse in the 26-week OL extension period, along with 
the 95% confidence interval. The time-to-relapse will be summarized descriptively and will also be 
presented by a Kaplan-Meier plot. 
Descriptive statistics will be presented on the change in PANSS total and subscale scores, change in 
CGI-S score, change in BNSS total score, and change in MADRS total score. Changes from DB 
Baseline of Study SEP361-201 and OL Baseline of Study SEP361-202 will be presented. The 
proportion of subjects who achieve a response, defined as a 20% or greater improvement in PANSS 
total score from the baseline, and calculated using (1) the DB Baseline of Study SEP361-201 for 
subjects assigned to double-blind SEP-363856,and (2) the OL Baseline of Study SEP361-202 for 
subjects assigned to double-blind placebo, will be calculated. 
Sample Size: All subjects who complete the 4-week double-blind treatment period of Study 
SEP361-201 are eligible to enroll. It is anticipated that approximately 180 subjects will enter this 
open-label extension study. 

Protocol SEP361-202, Version 4.00 
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Table 2: 
Schedule of Assessments 
Study Visit Number 
Study Visit Week 
Visit 
1Ea 
Baseline 
Visit 
2E 
Week 1 
Visit 
3E 
Week 2 
 
Visit 
4E 
Week 3 
Visit 
5E 
Week 4 
Visit 
6E 
Week 8 
Visit 
7E 
Week 12 
Visit 
8E 
Week 16 
Visit 
9E 
Week 20 
Visit 
10E 
Week 24 
Visit 
11E 
Week 26 
or ETb 
Visit 12E 
Week 27 
Follow-upc 
EOS 
Study Visit Day 
1 
8 ± 2 
15 ± 2 
22 ± 2 
29 ± 3 
57 ± 3 
85 ± 3 
113 ± 3 
141 ± 3 
169 ± 3 
183 ± 3 
190 ± 2 
Obtain informed consent 
X 
 
 
 
 
 
 
 
 
 
 
 
Review inclusion/exclusion 
criteria  
X 
 
 
 
 
 
 
 
 
 
 
 
Dispense study drugd 
Xm 
X 
X 
X 
X 
X 
X 
X 
X 
X 
 
 
Study drug accountability 
 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
 
Telephone Contactse 
 
Telephone calls to the subjects will be made between Weeks 1 and 2 and at Weeks 5, 7, 9, 11, 13, 15, 17, 19, 21, 
23, and 25. If subject appears to be symptomatic, an unscheduled visit will be made as early as possible.f 
 
Clinical and Laboratory 
Evaluations 
 
 
 
 
 
 
 
 
 
 
 
 
Adverse event (AE) monitoring 
Performed 
at Visit 7 
of study 
SEP361-
201 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Prior/concomitant medication 
review 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Physical and neurological 
examination 
 
 
 
X 
X 
 
X 
 
 
X 
 
Vital signsg 
X 
 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Weight (including BMI) 
X 
 
X 
X 
X 
X 
X 
X 
X 
X 
 
Waist circumference 
X 
 
X 
X 
X 
X 
X 
X 
X 
X 
 
Electrocardiogram (ECG) 
X 
 
 
X 
X 
X 
X 
X 
X 
X 
 
Clinical laboratory testsh 
X 
 
 
X 
 
 
X 
 
 
X 
 
Blood sample for POPPKi 
X 
 
 
X 
 
 
X 
 
 
X 
 
Urine drug screenj 
X 
 
 
X 
 
 
X 
 
 
X 
 
Urine β-hCGk 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Positive and Negative Syndrome 
Scale (PANSS) 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
 

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Table 2: 
Schedule of Assessments (Continued) 
Study Visit Number 
Study Visit Week 
Visit 
1Ea 
Baseline 
Visit 
2E 
Week 1 
Visit 
3E 
Week 
2 
 
Visit 
4E 
Week 3 
Visit 
5E 
Week 4 
Visit 
6E 
Week 8 
Visit 
7E 
Week 12 
Visit 
8E 
Week 16 
Visit 
9E 
Week 
20 
Visit 
10E 
Week 24 
Visit 
11E 
Week 26 
or ETb 
Visit 12E 
Week 27 
Follow-upc 
EOS 
Study Visit Day 
1 
8 ± 2 
15 ± 2 
22 ± 2 
29 ± 3 
57 ± 3 
85 ± 3 
113 ± 3 
141 ± 3 
169 ± 3 
183 ± 3 
190 ± 2 
Brief Negative Symptoms Scale 
(BNSS) 
 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
 
Clinical Global Impression – 
Severity (CGI-S) 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
 
Montgomery-Asberg Depression 
Rating Scale (MADRS) 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
 
Columbia Suicide Severity 
Rating Scale (C-SSRS)  
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Drug effects questionnaire 
(DEQ) 
 
 
 
 
 
 
 
 
 
X 
X 
Abnormal Involuntary 
Movement Scale (AIMS)l 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
 
Barnes Akathisia Rating Scale 
(BARS)l 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
 
Simpson-Angus Scale (SAS)l 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
 
Pittsburg Sleep Quality Index 
(PSQI) 
X 
 
 
X 
 
X 
 
 
X 
X 
X 
Cogstate Cognition Battery 
(CBB) 
 
 
 
 
 
 
 
 
 
 
 
Cogstate Schizophrenia Battery 
(CSB) 
 
 
 
 
 
 
X 
 
 
 
X 
 
USPA-B 
X 
 
 
 
 
 
X 
 
 
 
X 
 
Abbreviations: AE = adverse event; AIMS = Abnormal Involuntary Movement Scale; BARS = Barnes Akathisia Rating Scale; β-hCG = human chorionic gonadotropin; 
BNSS = Brief Negative Symptoms Scale; CGI-S = Clinical Global Impression – Severity; CBB = Cogstate Brief Battery; CSB = CogState Schizophrenia Battery; 
C-SSRS = Columbia Suicide Severity Rating Scale ; ECG = Electrocardiogram; ET = early termination; MADRS = Asberg Depression Rating Scale; SAS = Simpson-Angus 
Scale; PANSS = Positive and Negative Syndrome Scale; PK = pharmacokinetic; PSQI = Pittsburg Sleep Quality Index;  
a Results of assessments from Visit 7 (Week 4) of Study SEP361-201 will serve as Baseline assessments for the present study. NOTE: Subjects may be hospitalized for the first 
week of the present study if deemed appropriate by the Investigator. 

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b If a subject discontinues from the study, all Visit 11E procedures should be performed at the discontinuation visit, within 48 hours of last study dose. 
c All subjects will have a safety follow-up visit 7 (± 2) days after their last dose of study drug. 
d All study drug will be taken once daily in the evening by mouth. 
e Telephone calls will be made by a member of the research staff to the subjects between scheduled study visits (between Weeks 1 and 2, and at Weeks 5, 7, 9, 11, 13, 15, 17, 19, 
21, 23, and 25) to monitor clinical symptoms and adverse events. If subject appears to be symptomatic, an unscheduled visit will be made as early as possible. 
f Procedures and assessments for unscheduled visit are: drug accountability, physical and neurological examination, vital signs, ECG, clinical laboratory tests, urine drug screen, 
PANSS, CGI-S, MADRS, BNSS, AIMS, BARS, SAS, and C-SSRS. 
g Vital signs will include supine and standing measurements of blood pressure and heart rate and respiratory rate and temperature. 
h Clinical laboratory tests include: hematology, serum chemistry, urinalysis, serum prolactin, glycosylated hemoglobin (HbA1c), and glucose and lipid panel (subjects must be 
fasted [no food or drink except water at least 8 hours] prior to collection of blood samples for glucose and lipid panel). 
i Blood samples for determination of plasma SEP-363856 and SEP-363854 concentrations will be collected at Visit 2E, 5E, 8E, and 11E (time and date of the 3 previous doses of 
study medication and the time of the blood sampling must be recorded). Time of food intake relative to study drug taken should be recorded. 
j Urine drug screen may be ordered at other visits as deemed clinically appropriate. These results should be discussed with the Medical Monitor. 
k Any positive urine β-hCG test should be confirmed by a serum β-hCG test. 
l Unscheduled BARS, AIMS, and SAS scales should be administered if a subject develops extrapyramidal symptoms (EPS) requiring treatment. See Section 10.3.  
m Titration up to 75 mg/day is permitted (but not required) on Day 4 for reasons of efficacy as an unscheduled visit. At the minimum Investigator will assess AEs, concomitant 
medications and perform drug accountability at Day 4 unscheduled visit, all other assessments are not required but permitted based on Investigators judgment. 
Note: With the exception of the DEQ and the USPA-B, all rating assessments will be performed by the rater using a tablet. In the event that a tablet is not available, the rating 
assessments will be performed by the rater using a paper version of the assessment. 
 

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2. 
TABLE OF CONTENTS, LIST OF TABLES, AND LIST OF 
FIGURES 
TABLE OF CONTENTS 
RESTRICTED DISTRIBUTION OF PROTOCOLS ......................................................................2 
EMERGENCY CONTACTS...........................................................................................................3 
1. 
SYNOPSIS ...................................................................................................................4 
2. 
TABLE OF CONTENTS, LIST OF TABLES, AND LIST OF FIGURES ...............13 
3. 
LIST OF ABBREVIATIONS AND DEFINITIONS OF TERMS.............................19 
4. 
INTRODUCTION ......................................................................................................23 
4.1. 
Background .................................................................................................................23 
4.2. 
Study Conduct Rationale ............................................................................................23 
4.3. 
Risk-Benefit Assessment ............................................................................................25 
4.4. 
Hypothesis ..................................................................................................................25 
5. 
STUDY OBJECTIVES ..............................................................................................26 
5.1. 
Primary Objective .......................................................................................................26 
5.2. 
Secondary Objectives .................................................................................................26 
5.3. 
Other Objectives .........................................................................................................26 
6. 
STUDY ENDPOINTS ................................................................................................27 
6.1. 
Primary Endpoints ......................................................................................................27 
6.2. 
Secondary Endpoints ..................................................................................................27 
6.3. 
Other Endpoints ..........................................................................................................28 
7. 
INVESTIGATIONAL PLAN .....................................................................................29 
7.1. 
Overall Study Design ..................................................................................................29 
7.2. 
Treatment Assignment and Blinding ..........................................................................30 
7.2.1. 
Emergency Unblinding Procedures ............................................................................30 
7.3. 
Rationale .....................................................................................................................30 
7.3.1. 
Rationale for the Study Design ...................................................................................30 
7.3.2. 
Rationale for the Dosages ...........................................................................................30 
7.4. 
Prevention of Missing Data ........................................................................................31 
8. 
SELECTION OF SUBJECTS ....................................................................................32 
8.1. 
Subject Inclusion Criteria ...........................................................................................32 
8.2. 
Subject Exclusion Criteria ..........................................................................................32 

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9. 
STUDY DRUG MATERIALS AND MANAGEMENT ...........................................34 
9.1. 
Description of Study Drug ..........................................................................................34 
9.2. 
Study Drug Packaging and Labeling ..........................................................................34 
9.2.1. 
Package Description ...................................................................................................34 
9.2.2. 
Labeling Description ..................................................................................................34 
9.3. 
Study Drug Storage .....................................................................................................35 
9.4. 
Dispensing of Study Drug ..........................................................................................35 
9.5. 
Study Drug Accountability .........................................................................................35 
9.6. 
Study Drug Handling and Disposal ............................................................................35 
10. 
TREATMENT OF SUBJECTS ..................................................................................36 
10.1. 
Study Drug ..................................................................................................................36 
10.1.1. 
Dosage Adjustment Criteria .......................................................................................36 
10.2. 
Treatment Compliance ................................................................................................36 
10.3. 
Concomitant Medications and Restrictions ................................................................36 
10.3.1. 
Concomitant Nonpsychotropic Medications ..............................................................37 
10.3.2. 
Concomitant Psychotropic Medications .....................................................................37 
10.3.3. 
Prohibited Medications ...............................................................................................38 
10.3.4. 
Prohibited Therapies ...................................................................................................38 
10.4. 
Other Restrictions .......................................................................................................39 
10.5. 
Description of Study Periods and Hospital Discharge ...............................................39 
10.5.1. 
Description of Study Periods ......................................................................................39 
10.5.2. 
Hospital Discharge During the Study .........................................................................39 
10.6. 
Guidance for Overdose ...............................................................................................40 
11. 
STUDY ASSESSMENTS ..........................................................................................41 
11.1. 
Demographics and Baseline Characteristics ...............................................................41 
11.2. 
Prior and Concomitant Medication Review ...............................................................41 
11.3. 
Efficacy Assessments .................................................................................................41 
11.3.1. 
Positive and Negative Syndrome Scale (PANSS) ......................................................41 
11.3.2. 
Brief Negative Symptom Scale (BNSS) .....................................................................41 
11.3.3. 
Montgomery-Asberg Depression Rating Scale (MADRS) ........................................42 
11.3.4. 
Clinical Global Impressions – Severity Scale (CGI-S) ..............................................42 
11.3.5. 
CogState Brief Battery (CBB) and CogState Schizophrenia Battery (CSB) ..............42 

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11.3.6. 
University of California, San Diego, Performance-Based Skills Assessment-
Brief (USPA-B) ..........................................................................................................43 
11.4. 
Safety Assessments .....................................................................................................43 
11.4.1. 
Adverse Events ...........................................................................................................43 
11.4.2. 
Clinical Laboratory Tests ...........................................................................................43 
11.4.3. 
Vital Signs ..................................................................................................................43 
11.4.4. 
Electrocardiograms (ECGs) ........................................................................................44 
11.4.5. 
Physical and Neurological Examination .....................................................................44 
11.4.6. 
Height, Weight, and BMI ...........................................................................................44 
11.4.7. 
Safety Scales ...............................................................................................................45 
11.4.7.1. 
Abnormal Involuntary Movement Scale (AIMS) .......................................................45 
11.4.7.2. 
Barnes Akathisia Rating Scale (BARS) .....................................................................45 
11.4.7.3. 
Simpson-Angus Scale (SAS) ......................................................................................45 
11.4.7.4. 
Columbia Suicide Severity Rating Scale (C-SSRS) ...................................................45 
11.4.7.5. 
Drug Effects Questionnaire (DEQ) ............................................................................45 
11.4.7.6. 
Pittsburg Sleep Quality Index (PSQI).........................................................................46 
11.5. 
Population Pharmacokinetic Assessments ..................................................................46 
11.6. 
Study Visits and Assessments ....................................................................................46 
11.6.1. 
Baseline: Visit 1E (Day 1) ..........................................................................................46 
11.6.2. 
Visit 2E (Week 1; Day 8 ± 2) .....................................................................................48 
11.6.3. 
Visit 3E (Week 2; Day 15 ± 2) ...................................................................................48 
11.6.4. 
Visit 4E (Week 3; Day 22 ± 2) ...................................................................................49 
11.6.5. 
Visit 5E (Week 4; Day 29 ± 3) ...................................................................................49 
11.6.6. 
Visit 6E (Week 8; Day 57 ± 3) and Visit 7E (Week 12; Day 85 ± 3) ........................50 
11.6.7. 
Visit 8E (Week 16; Day 113 ± 3) ...............................................................................51 
11.6.8. 
Visit 9E (Week 20; Day 141 ± 3) and Visit 10E (Week 24; Day 169 ± 3) ................52 
11.6.9. 
Visit 11E (Week 26; Day 183 ± 3, Early Termination) ..............................................53 
11.6.10. 
Visit 12E (Week 27; Day 190 ± 2, Follow-up, End of Study) ...................................53 
11.6.11. 
Unscheduled Visit (Subjects Who Appear Symptomatic during Telephone 
Contacts) .....................................................................................................................54 
12. 
SAFETY REPORTING ..............................................................................................55 
12.1. 
Definitions ..................................................................................................................55 
12.1.1. 
Adverse Events ...........................................................................................................55 

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12.1.2. 
Serious Adverse Events ..............................................................................................55 
12.2. 
Objective Findings ......................................................................................................56 
12.3. 
Collection and Recording of Adverse Events .............................................................56 
12.4. 
Immediately Reportable Events ..................................................................................58 
12.4.1. 
Serious Adverse Event ................................................................................................58 
12.4.2. 
Pregnancy ...................................................................................................................59 
13. 
TERMINATION OF SUBJECT FROM STUDY/DISCONTINUATION OF 
STUDY DRUG ...........................................................................................................60 
13.1. 
Criteria for Subject Termination/Study Drug Discontinuation ..................................60 
13.2. 
Clinical Assessments after Study Drug Discontinuation ............................................60 
14. 
STUDY TERMINATION ..........................................................................................61 
15. 
STATISTICS ..............................................................................................................62 
15.1. 
Sample Size ................................................................................................................62 
15.2. 
Analysis Population ....................................................................................................62 
15.2.1. 
Safety Population ........................................................................................................62 
15.3. 
Data Analysis ..............................................................................................................62 
15.3.1. 
Subject Disposition .....................................................................................................62 
15.3.2. 
Drug Exposure and Compliance .................................................................................62 
15.3.3. 
Important Protocol Deviations ....................................................................................63 
15.3.4. 
Demographic and Baseline Characteristics ................................................................63 
15.3.5. 
Efficacy Analyses .......................................................................................................63 
15.3.6. 
Safety Analyses ..........................................................................................................64 
15.3.6.1. 
Adverse Events ...........................................................................................................64 
15.3.6.2. 
Clinical Laboratory Assessments ...............................................................................65 
15.3.6.3. 
ECGs ...........................................................................................................................65 
15.3.6.4. 
Vital Signs ..................................................................................................................65 
15.3.6.5. 
Physical/Neurological Examination ...........................................................................65 
15.3.6.6. 
Concomitant Medications ...........................................................................................65 
15.3.6.7. 
Suicidality Measure ....................................................................................................66 
15.3.6.8. 
Rate of Relapse and Time to Relapse .........................................................................66 
15.3.6.9. 
Movement Disorder Measures ....................................................................................66 
15.3.6.10. Drug Effects Questionnaire ........................................................................................66 
15.3.6.11. Pittsburgh Sleep Quality Index ...................................................................................66 

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15.3.6.12. Subgroup Analysis ......................................................................................................67 
15.3.7. 
Pharmacokinetic Analysis ..........................................................................................67 
15.3.8. 
Pharmacodynamic Analysis........................................................................................67 
15.3.9. 
Interim Analysis ..........................................................................................................67 
15.3.10. 
Treatment of Missing Data .........................................................................................67 
15.3.11. 
Sensitivity Analyses ....................................................................................................67 
16. 
PROCEDURE FOR CLINICAL STUDY QUALITY CONTROL /DATA 
COLLECTION, MANAGEMENT, AND QUALITY ASSURANCE ......................68 
16.1. 
Data Collection/Electronic Data Capture (EDC) ........................................................68 
16.2. 
Computerized Systems Used for Source Data ............................................................68 
16.3. 
Study Monitoring ........................................................................................................69 
16.4. 
Audits ..........................................................................................................................69 
16.5. 
Study Documentation .................................................................................................70 
16.6. 
Clinical Laboratory Certification and Normal Values ................................................70 
17. 
ETHICAL AND REGULATORY OBLIGATIONS..................................................71 
17.1. 
Study Conduct ............................................................................................................71 
17.2. 
Institutional Review Board/Independent Ethics Committee ......................................71 
17.3. 
Informed Consent .......................................................................................................71 
17.4. 
Subject Privacy ...........................................................................................................72 
17.5. 
Protocol Amendments and Emergency Deviations ....................................................72 
17.6. 
Records Retention .......................................................................................................73 
17.7. 
Inspection of Records .................................................................................................73 
17.8. 
Publication Policy .......................................................................................................73 
18. 
REFERENCES ...........................................................................................................74 
19. 
INVESTIGATOR APPROVAL .................................................................................77 
20. 
APPENDIX I. CARDIAC SAFETY MONITORING (ECG) ....................................78 
21. 
APPENDIX II. HIGHLY EFFECTIVE CONTRACEPTIVE 
PROCEDURES FOR AND DURING THE STUDY ................................................79 
22. 
APPENDIX III. CLINICAL LABORATORY TESTS ..............................................80 
23. 
APPENDIX IV. PHARMACOKINETIC SAMPLING AND SAMPLE 
HANDLING GUIDELINE .........................................................................................81 
 
 

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LIST OF TABLES 
Table 1: 
Emergency Contact Information ...................................................................................3 
Table 2: 
Schedule of Assessments ............................................................................................10 
Table 3: 
List of Abbreviations ..................................................................................................19 
Table 4: 
Definition of Key Study Terms ..................................................................................22 
Table 5: 
Investigational Product ...............................................................................................34 
Table 6: 
Concomitant Medications/Therapies: Use During Study ...........................................37 
Table 7: 
Description of Study Periods ......................................................................................39 
 
LIST OF FIGURES 
Figure 1 
Study Schematic .........................................................................................................29 
 

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3. 
LIST OF ABBREVIATIONS AND DEFINITIONS OF TERMS 
The abbreviations and the definition of key study terms used in the clinical study protocol are 
shown in Table 3 and Table 4. 
Table 3: List of Abbreviations 
Abbreviation 
Full Form 
AE 
Adverse event 
AIMS 
Abnormal Involuntary Movement Scale 
ALT 
Alanine aminotransferase 
ANCOVA 
Analysis of covariance 
AST 
Aspartate aminotransferase 
ATC 
Anatomical Therapeutic Chemical 
BARS 
Barnes Akathisia Rating Scale 
BMI 
Body mass index  
BNSS 
Brief Negative Symptom Scale 
BOLD 
Blood oxygen level dependent 
BUN 
Blood urea nitrogen 
CDR 
Clinical data repository 
CFR 
Code of Federal Regulations 
CGI-I 
Clinical global impression - improvement 
CGI-S 
Clinical global impression - severity 
CIMS 
Clinical Inventory Management System 
CLIA 
Clinical Laboratory Improvement Amendments 
CNS 
Central nervous system 
CRF 
Case report form 
CRO 
Contract research organization 
CS 
Clinically significant 
C-SSRS 
Columbia – Suicide Severity Rating Scale 
CYP 
cytochrome 
DEQ 
Drug Effects Questionnaire 
ECG 
Electrocardiogram 
EDC 
Electronic data capture 
EEG 
Electroencephalogram 

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Table 3: 
List of Abbreviations (Continued) 
Abbreviation 
Full Form 
ET 
Early termination 
FDA 
U.S. Food and Drug Administration 
fMRI 
functional magnetic resonance imaging (fMRI) 
GCP 
Good Clinical Practice 
5-HT 
5-hydroxytryptamine (serotonin) 
HIV 
Human immunodeficiency virus  
ICH 
International Conference on Harmonization 
IEC 
Independent Ethics Committee  
IND 
Investigational New Drug 
IPD 
Important protocol deviation 
IRB 
Institutional Review Board 
IXRS 
Interactive voice/web response system 
LOCF 
Last Observation Carried Forward 
LIMS 
Laboratory information management system 
MADRS 
Montgomery-Asberg Depression Rating Scale 
MedDRA 
Medical Dictionary for Regulatory Activities 
MID 
Monetary incentive delay 
mITT 
Modified Intention-to-Treat 
MMRM 
Mixed-effects Models Repeated Measures 
MoA 
Mechanism of action 
SAS 
Simpson-Angus Scale 
MTD 
Maximum tolerated dose 
N2 
NREM sleep stage 2 
N3 
NREM sleep stage 3 
NCS 
Not clinically significant 
NREM 
Non-rapid eye movement sleep 
PANSS 
Positive and negative syndrome scale 
PD 
Pharmacodynamic(s) 
PE 
Physical examination 
PGx 
Pharmacogenomic(s) 
PK 
Pharmacokinetic(s) 

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Table 3: 
List of Abbreviations (Continued) 
Abbreviation 
Full Form 
POPPK 
Population pharmacokinetics 
PR 
Time between P wave and QRS in electrocardiography 
PSG 
polysomnography 
PSQI 
Pittsburgh Sleep Quality Index 
PT 
Preferred term 
QD 
Once daily 
QRS 
Electrocardiographic wave (complex or interval) 
QT 
Electrocardiographic interval from the beginning of the QRS 
complex to the end of the T wave 
QTc 
QT interval corrected for heart rate 
REM 
Rapid eye movement 
RR 
Respiration rate 
SAD 
single ascending dose 
SAE 
Serious adverse event 
SCID-CT 
Structured Clinical Interview for DSM-IV, Clinical Trials Version 
SOC 
System organ class 
TAAR1 
trace amine associated 1 receptors 
US, USA 
United States, United States of America 
USP 
United States Pharmacopeia 
VAS 
Visual analogue scale 
WBC 
White blood cells 
WHO 
World Health Organization 

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Table 4: Definition of Key Study Terms 
Terms 
Definition of terms 
CRF 
A printed, optical, or electronic document designed to record all 
of the protocol required information to report to the Sponsor for 
each study subject. 
Screened Subject 
Any subject who signed the study specific informed consent and 
completed at least one study related procedure. 
Screen Failures 
Any subject who signed the study specific informed consent but 
either failed to meet study requirements during baseline or met 
study requirements at baseline but was not enrolled. 
Study Drug (or 
Investigational 
Product) 
Term to cover investigational drug. 
Treatment Period 
The period of the study in which the study drug is administered. 
Enrolled Subject 
Any subject who was successfully screened and was dispensed 
study drug. 
Completed Subject 
Any subject who participated throughout the duration of the 
study, up to and including the last follow-up visit. 
Early Termination 
Subject 
Any subject who was successfully screened and entered into the 
treatment period of the study, but did not complete the study. 
End of Treatment 
The day that the subject receives protocol-defined last dose of the 
study drug. This may or may not include a taper period.  
End of Study 
The day that the subject completes the study per the study design. 
 

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4. 
INTRODUCTION 
4.1. 
Background 
Schizophrenia is a chronic and disabling neurodegenerative disorder characterized by a mixture 
of positive symptoms (eg, hallucinations, delusions, and thought and movement disorders), 
negative symptoms (eg, flat affect, anhedonia, alogia, and avolition), and cognitive deficits (eg, 
impaired memory, attention, and planning/organizing). Mood symptoms such as depression, 
anxiety, hostility, and excitement can also be present in patients with schizophrenia (Patel-2007; 
NIMH-2010). Despite scientific advances, schizophrenia remains one of the most challenging 
diseases to treat due to its variable nature, the heterogeneity of clinical response, the side effects 
of treatment, and its association with high morbidity and mortality (Lehman-2004; Tandon-2008; 
NIMH-2010). 
Schizophrenia has an estimated population prevalence of approximately 1% (estimated 
2.4 million adults), with a diagnosed prevalence of 0.51% in the United States (Narrow-2002; 
Wu-2006). It affects both genders equally (NIMH-2010) typically first manifesting in young 
adults, with the peak ages of onset in the early to mid 20s in men and late 20s in women 
(APA-2000). It is believed to be caused by a combination of genetic and environmental factors 
(Minzenberg-2008). Dopaminergic, serotonergic and glutamatergic systems are believed to play 
a role in schizophrenia (Kuroki-2008; Kim-2009). 
The current standard of care for the treatment of schizophrenia is the use of second generation 
antipsychotics or “atypical antipsychotics” (Lehman 2004; Kreyenbuhl-2009; NIMH-2010; 
Meltzer-2011; Nakamura-2009). These “atypicals” are thought to have fewer extrapyramidal 
side effects compared to first generation antipsychotics or “typical antipsychotics” (eg, 
haloperidol) (Leucht-2009; Naber-2009). However some patients respond poorly to both atypical 
and typical antipsychotics and some continue to have symptoms and substantial 
functional/cognitive impairment (Keefe-2006; Webber-2008). Very few patients return to 
Baseline (pre psychosis) function (Schultz-1999; Pearlson-2000; Kapur-2001). In addition, some 
atypical agents have a variety of other side effects, including weight gain, metabolic syndrome, 
sedation, QTc prolongation, extrapyramidal symptoms and tardive dyskinesia (Davis-2004; 
Lieberman-2005; Newcomer-2007; Leucht 2009), which may lead to significant medical 
problems as well as contribute to poor compliance and treatment discontinuation. The large scale 
NIMH-CATIE schizophrenia study found that 70% to 80% of outpatients discontinue 
medications because of lack of efficacy or occurrence of side effects (Lieberman 2005) often 
leading to relapse of symptoms and need for rehospitalization (Ascher-Svanum-2010; 
Munro-2011; Morken-2008). Clearly, an unmet need exists for new, effective, and well-tolerated 
treatments. 
4.2. 
Study Conduct Rationale 
SEP-363856 is a CNS-active compound, which shows broad efficacy in animal models of 
schizophrenia (positive and negative symptoms), cognition and depression. The molecular target 
responsible for the profile effects has not been completely elucidated, but may include actions at 
5 HT1A and trace amine associated 1 (TAAR1) receptors. Rat electroencephalogram (EEG) 

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studies showed that SEP-363856 suppressed rapid eye movement (REM) sleep in a dose 
dependent manner. In nonhuman primate functional magnetic resonance imaging (fMRI) 
experiments, similar to risperidone, pretreatment with SEP-363856 also reduced the ketamine 
brain fMRI response in rhesus monkey supporting an antipsychotic-like profile. Taken together, 
these data demonstrate that SEP-363856 exhibits clear, functional CNS PD signals in rats and 
nonhuman primates. 
To date, 210 subjects have received oral doses of SEP-363856 in six Phase 1 clinical studies. 
Five Phase 1 studies have been completed (SEP361-101, SEP361-103, SEP361-105, 
SEP361-106, and SEP361-108). One Phase 1 study has been clinically completed (SEP361-104). 
The first in human clinical study, a single ascending dose study (SAD; Study SEP361-101), was 
designed to determine the safety, tolerability, maximum tolerated dose (MTD), and PK of a 
single oral dose of SEP-363856 in normal, healthy, adult male subjects. 
Study SEP361-103 was a randomized, double-blind, placebo-controlled, crossover 
polysomnography (PSG) study that investigated the effect of a single oral dose (50 mg and 
10 mg) of SEP-363856 on REM sleep suppression and PK in healthy adult male subjects. A 
single 50 mg oral dose of SEP-363856 suppressed REM sleep in all subjects (increased latency 
to REM sleep and reduced time spent in REM sleep) and increased NREM sleep stage 2 (N2), 
and NREM sleep stage 3 (N3) (deep or slow wave sleep). A single oral 10 mg dose of 
SEP-363856 also increased latency to REM sleep to a lesser extent, but did not reduce time spent 
in REM sleep. Taken together, results from these 2 studies in healthy adult male subjects 
demonstrated acceptable safety profile as well as robust CNS effect. 
Study SEP361-105 was a randomized, single-blind, placebo-controlled, SAD study assessing the 
safety, tolerability, and PK of SEP-363856 in male and female subjects with schizophrenia. 
Study SEP361-106 was a 2 part, randomized, single-blind, placebo-controlled, multiple 
ascending oral dose (MAD) and open-label study in male and female schizophrenic patients 
assessing the safety, tolerability, and PK of SEP-363856 in the target patient population. Results 
from this study demonstrate an acceptable safety and tolerability profile of SEP-363856 up to 
28 days in schizophrenia patients. Additionally, in Part 2, treatment with SEP-363856 at 
75 mg/day for 28 days demonstrated improvement in efficacy measures (PANSS total score, 
CGI-S) compared with Baseline. Furthermore, ad hoc subgroup analyses showed a significantly 
greater decrease from Baseline in PANSS total scores at the end of the 28-day treatment period 
in subjects who had less frequent hospitalizations per year of illness compared with subjects who 
had more frequent hospitalizations per year of illness. 
Study SEP361-104 was a randomized, double-blind, placebo-controlled, single dose study of the 
effects of SEP-363856 (50 mg) and amisulpride (400 mg) on BOLD-fMRI signal in healthy adult 
male and female subjects with high or low schizotype characteristics. Subjects with high 
schizotype characteristics and patients with schizophrenia share many similar features including 
positive, cognitive, negative and anhedonia symptoms, although in high schizotypes the features 
present in an attenuated form. In this study, fMRI was used in combination with a validated 
monetary incentive delay (MID) task to examine the single dose effects SEP-363856 on changes 
in reward processing. During the anticipation/motivational phase of the task, SEP-363856 
modulated striatum, insula and orbitofrontal cortex brain activity, and fMRI effects of 
SEP-363856 were similar to those observed with the D2 antagonist amisulpride. During the 
outcome/hedonic phase of the task, SEP-363856 generally increased brain activity in core reward 

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areas (striatum, insula), whereas amisulpride decreased brain activity in these same regions. 
Taken together the overall pattern of activity during MID task performance support specific 
hypotheses for the potential of SEP-363856, a novel MoA molecule, to improve positive and 
negative symptoms of schizophrenia. Overall, the known molecular pharmacology profile, 
animal model evidence, and clinical experience in healthy adult male and female subjects, adult 
male and female subjects with high and low schizotype characteristics, and patients with 
schizophrenia provide further support to evaluate SEP-363856 as a potential treatment for 
schizophrenia. 
This is an open-label extension study to further evaluate the safety and tolerability of 
flexibly-dosed SEP-363856 (25, 50 or 75 mg) over 26 weeks of treatment in adult subjects with 
schizophrenia who completed 4 weeks of double-blind treatment Study SEP361-201. 
4.3. 
Risk-Benefit Assessment 
Overall, in previous clinical studies SEP-363856 was generally safe and well tolerated. The 
pharmacokinetic (PK) and safety profiles observed in adults from completed clinical studies 
support evaluation of dose levels of 25 to 75 mg/day in adults with schizophrenia. 
Schizophrenia is a life-long disorder and despite advances in drug treatment many patients 
continue to experience symptoms with impaired quality of life. SEP-363856 has a unique 
mechanism of action and, if successful, could provide a major step forward in the treatment of 
schizophrenia. Moreover, its unique mechanism of action suggest that it has fewer side effects 
than traditional antipsychotics and, therefore, is likely to be well tolerated by subjects in this 
study. 
4.4. 
Hypothesis 
This is an open-label extension study to evaluate long-term safety and tolerability of 
SEP-363856. No statistical hypothesis tests will be performed. 

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5. 
STUDY OBJECTIVES 
5.1. 
Primary Objective 
The primary objective of this study is to evaluate the long-term safety and tolerability of flexibly 
dosed SEP-363856 (25, 50, or 75 mg/day [ie, once daily]) in adult subjects with schizophrenia 
who have completed Study SEP361-201 by the incidence of overall adverse events (AEs), 
serious AEs (SAEs), and AEs leading to discontinuation. 
5.2. 
Secondary Objectives 
• To evaluate the long-term safety and tolerability of SEP-363856 by assessing vital 
signs, physical examinations (PE), body weight and body mass index (BMI), 12-lead 
electrocardiograms (ECG), clinical laboratory evaluations, and suicidal ideation and 
suicidal behavior using the Columbia - Suicide Severity Rating Scale (C-SSRS) 
• To evaluate the long-term effectiveness of SEP-363856 using the Positive and 
Negative Syndrome Scale (PANSS) total score, Clinical Global Impression-Severity 
(CGI-S), PANSS subscale scores (positive, negative, general psychopathology), Brief 
Negative Systems Scale (BNSS), and Montgomery-Asberg Depression Rating Scale 
(MADRS) 
• To explore the long-term maintenance of response in subjects treated with 
SEP-363856 as measured by the time to relapse and the rate of relapse 
5.3. 
Other Objectives 
• To assess whether long-term treatment with SEP-363856 is associated with 
extrapyramidal symptoms as measured by the Barnes Akathisia Rating Scale 
(BARS), the Abnormal Involuntary Movement Scale (AIMS), and the Simpson-
Angus Scale (SAS) 
• To characterize the long-term effects of SEP-363856 as measured by the Drug Effects 
Questionnaire (DEQ) 
• To characterize the subjective long-term effects of SEP-363856 on sleep as measured 
by the Pittsburgh Sleep Quality Index (PSQI) 
• To explore the effects of SEP-363856 on cognition as assessed by the CogState Brief 
Battery (CBB) and the CogState Schizophrenia Battery (CSB) 
• To explore the effects of SEP-363856 on functional outcomes as measured by the 
UPSA-B total score 
 

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6. 
STUDY ENDPOINTS 
6.1. 
Primary Endpoints 
• The incidence of overall AEs, SAEs, and AEs leading to discontinuation 
6.2. 
Secondary Endpoints 
• Absolute values and changes from double-blind (DB) Baseline of Study SEP361-201 
and open-label (OL) Baseline of Study SEP361-202 in clinical laboratory tests 
(hematology, serum chemistry, urinalysis, glucose and lipid panel, prolactin, 
glycosylated hemoglobin (HbA1c)) 
• Absolute values and changes from DB Baseline of Study SEP361-201 and OL 
Baseline of Study SEP361-202 in clinical evaluations (vital signs body weight, BMI, 
blood pressure [supine and standing], heart rate [supine and standing], 12-lead ECGs) 
• Frequency and severity of suicidal ideation and suicidal behavior using the C-SSRS 
• Rate of relapse and time to relapse during the 26-week OL period for subjects who 
demonstrated a clinical response to 4 weeks of treatment with SEP-363856. Relapse 
will be defined as the onset of any of the following: 
− An increase in PANSS total score ≥ 30% from the PANSS total score at clinical 
response and a CGI-S score ≥ 3 
− Re-hospitalization for worsening of psychosis 
− Emergence of suicidal ideation, homicidal ideation and/or risk of harm to self or 
others. 
• Changes from DB Baseline of Study SEP361-201 and OL Baseline of Study 
SEP361-202 in PANSS total score and subscale scores (positive, negative, and 
general psychopathology) 
• Change from DB Baseline of Study SEP361-201 and OL Baseline of 
Study SEP361-202 in CGI-S score. 
• Change from DB Baseline of Study SEP361-201 and OL Baseline of 
Study SEP361-202 in BNSS total score. 
• Change from DB Baseline of Study SEP361-201 and OL Baseline of 
Study SEP361-202 in MADRS total score. 
• Proportion of subjects who achieve a response, defined as a 20% or greater 
improvement in PANSS total score from the baseline, and calculated using (1) the DB 
Baseline of Study SEP361-201 for subjects assigned to double-blind SEP-363856, 
and (2) the OL Baseline of Study SEP361-202 for subjects assigned to double-blind 
placebo. 

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6.3. 
Other Endpoints 
• Change from DB Baseline of Study SEP361-201 and OL Baseline of Study 
SEP361-202 in BARS, AIMS and SAS scores. 
• Absolute visual analogue scale (VAS) scores of the DEQ. 
• Change from DB Baseline of Study SEP361-201 and OL Baseline of 
Study SEP361-202 in PSQI score. 
• Change from DB Baseline of Study SEP361-201 and OL Baseline of 
Study SEP361-202 in CBB composite score. 
• Change from Week 12 of Study SEP361-202 in CSB composite score at Week 26 
• Change from OL Baseline of Study SEP361-202 in UPSA-B total score. 

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7. 
INVESTIGATIONAL PLAN 
7.1. 
Overall Study Design 
This is a 26-week, multiregional, open-label extension study designed to evaluate the long-term 
safety and tolerability of SEP-363856 for the treatment of subjects with schizophrenia who have 
completed the 4-week double-blind treatment phase of Study SEP361-201. 
Subjects who meet the entry criteria will transition immediately from Study SEP361-201 (at 
Visit 7; assessments performed at Study SEP361-201 Visit 7 will serve as the Baseline 
assessments for the present study). Informed consent will be obtained from all subjects before 
any study procedures are performed for the present study. 
Subjects will attend an initial visit on Day 1 (same day as Visit 7 of study SEP361-201). Subjects 
may be hospitalized for the first week of the present study, if deemed appropriate by the 
Investigator. During the treatment period, clinic visits will occur as shown in the following 
figure, during which the procedures outlined in Table 2 will be conducted. Subjects will be seen 
at weekly intervals for the first 4 weeks, then every 4 weeks thereafter up to week 26. Telephone 
calls will be made by a member of the clinical research staff to the subjects between scheduled 
study visits (between Weeks 1 and 2, and at Weeks 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, and 25) to 
monitor clinical symptoms and adverse events. If subject appears to be symptomatic, an 
unscheduled visit will be made as early as possible. Subjects who discontinue early from the 
study or complete study will be required to complete the follow-up visit 7 days (± 2 days) post 
last dose of study drug. 
 
Figure 1 Study Schematic 
 
Note: Titration up to 75 mg/day is permitted (but not required) on Day 4 for reasons of efficacy as an unscheduled visit. 
 
All subjects will receive open-label SEP-363856 50 mg/day from Day 1 through Day 3. 
Beginning on Day 4, flexible dosing ranging from 25 to 75 mg/day is permitted, if deemed 
clinically necessary (for reasons of safety, tolerability, or efficacy) by the Investigator. On Day 4, 
subjects are permitted (but not required) to titrate up to 75 mg/day for reasons of efficacy. 
Thereafter, if a dose increase is necessary to optimize efficacy it should occur at regular 
scheduled study visit based on Investigator judgement. Day 4 dosing changes will occur at an 
unscheduled visit. Thereafter, an increase in dose should occur at weekly intervals in increments 
of one dose level at a time to a maximum dose of 75 mg/day. Dose reduction for tolerability 
purposes is allowed at any time during the study. 

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Safety and tolerability will be monitored throughout the study by collection of physical 
examination results, ECGs, vital signs, AEs, clinical laboratory parameters, C-SSRS, body 
weight, and BMI. Subjects who have any new significant findings or worsening of findings for 
suicidal ideation or behavior upon completion of the C-SSRS at any time during the study must 
be referred to the investigator for follow-up evaluation. 
Effectiveness will be evaluated using the PANSS total and subscale scores, as well as CGI-S, 
BNSS, and MADRS scores. 
Subjects will provide information on subjective drug effects via administration of the DEQ. In 
addition, effects on movement disorders will be measured using the AIMS, BARS and SAS 
scales. Subjective effects on sleep will be measured by the PSQI scale. Effects on cognition will 
be assessed by CogState Brief Battery (CBB) and the CogState Schizophrenia Battery (CSB), 
and a functional outcome measure (UPSA-B total score). 
Blood samples for determination of plasma SEP-363856 and SEP-363854 concentrations will be 
collected at Visit 2E, 5E, 8E, and 11E. POPPK analysis will be performed using plasma 
SEP-363856 concentrations; the results of which will be reported separately. 
Subjects who meet any discontinuation/withdrawal criteria will be terminated from the study. 
Upon termination from the study, hospitalization will be allowed for up to 7 days to stabilize the 
subject, if necessary. Prior authorization for hospitalization must be approved by the Medical 
Monitor. 
7.2. 
Treatment Assignment and Blinding 
This is an open-label study. All subjects will receive flexible dosing with SEP-363856 (25, 50, or 
75 mg/day). 
7.2.1. 
Emergency Unblinding Procedures 
This is an open-label study. 
7.3. 
Rationale 
7.3.1. 
Rationale for the Study Design 
This is an open-label extension study to further evaluate the long-term safety and tolerability of 
flexibly-dosed SEP-363856 (25, 50 or 75 mg) over 26 weeks of treatment in adult subjects with 
schizophrenia who completed 4 weeks of double-blind treatment in Study SEP361-201. 
Long-term effectiveness of SEP-363856 will also be evaluated. 
7.3.2. 
Rationale for the Dosages 
In the present study, dosing of SEP-363856 at 25, 50, or 75 mg/day for 26 weeks will be utilized 
based on observed safety and tolerability in previous studies. Dosages of 50 or 75 mg/day were 
evaluated in Study SEP361-201. Selection of this dose range was guided by the maximum 
tolerated dose (MTD) determined for single doses of SEP-363856 administered to healthy adult 
subjects in Study SEP361-101 (50 mg); the MTD determined for single doses administered to 
adult subjects with schizophrenia in Study SEP361-105 (75 mg); by the single doses 
administered to healthy adult subjects (Studies SEP361-103 and SEP361-104 [50 mg]) which 

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were found to have robust CNS activity). Study SEP361-108 in narcolepsy subjects also 
demonstrated CNS activity (i.e., REM suppression) at 25 and 50 mg. In addition, dose selection 
is supported by acceptable safety and tolerability data from the 7-day (10 – 75 mg) and open 
label 28-day (75 mg) MAD study (Study SEP361-106, Parts 1 and 2) in adult subjects with 
schizophrenia. 
7.4. 
Prevention of Missing Data 
In an effort to minimize the number of subjects who are terminated from the study prior to study 
completion, the following study design and conduct elements are implemented: 
• allowance of a dose reduction (from 75 to 50 mg/day or from 50 to 25 mg/day) for drug 
tolerability purposes 
• allowance of some concomitant psychotropic medications during study participation 
• train the study centers on the importance of continued follow-up and on the informed 
consent process, ensuring subjects understand the commitment they are making, 
including the intent to complete the trial 
• monitor data collection for adherence during the study 
Please see Section 15.3 for statistical considerations related to missing data. 

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8. 
SELECTION OF SUBJECTS 
8.1. 
Subject Inclusion Criteria 
To qualify for participation, subjects must meet all of the following inclusion criteria: 
1. Subject must give written informed consent and privacy authorization prior to 
participation in the study and able to comply with the protocol, in the opinion of the 
investigator. Separate consent will be obtained from a caregiver or legal guardian if 
required by local law. 
2. Subject has completed Study SEP361-201 through Week 4. 
3. Subject has not taken any medication other than the study drug for the purpose of 
controlling schizophrenia symptoms during Study SEP361-201. 
4. Female subject must have a negative urine pregnancy test at Visit 7 of Study 
SEP361-201; females who are post-menopausal (defined as at least 12 months of 
spontaneous amenorrhea) and those who have undergone hysterectomy or bilateral 
oophorectomy will be exempted from the pregnancy test. Female subject of reproductive 
potential agrees to remain abstinent or use highly effective and reliable contraception 
throughout the study and for at least 30 days after the last dose of study drug has been 
taken (See Section 21 Appendix II Highly Effective Contraceptive procedures). In the 
Investigator's judgment, the subject will adhere to this requirement. 
5. Male subjects with female partner(s) of childbearing potential must agree to avoid 
fathering a child and use highly effective methods of birth control from screening until at 
least 30 days after the last study drug administration. 
8.2. 
Subject Exclusion Criteria 
To qualify for participation, subjects must not meet any of the following exclusion criteria: 
1. Subject answers "yes" to "suicidal ideation" Item 4 (active suicidal ideation with some 
intent to act, without specific plan) or Item 5 (active suicidal ideation with specific plan 
and intent) on the C-SSRS assessment at Visit 7 of Study SEP361-201. Subjects who 
answer "yes" to this question must be referred to the Investigator for follow-up 
evaluation. 
2. Subject has a clinically significant abnormality including physical examination, vital 
signs, ECG, or laboratory test at Visit 7 of Study SEP361-201 that the investigator in 
consultation with the medical monitor considers to be inappropriate to allow participation 
in the study. 
3. Subject has a positive urine drug screen (UDS) or breath alcohol test at Visit 7 of Study 
SEP361-201. 
4. Subject is pregnant or lactating. 
5. Subject is at high risk of non-compliance in the Investigator's opinion. 

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6. Subject is in the opinion of the Investigator, unsuitable in any other way to participate in 
this study. 
 

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9.
STUDY DRUG MATERIALS AND MANAGEMENT
9.1. 
Description of Study Drug
Table 5: 
Investigational Product 
Attribute 
Investigational Product 
Product name 
SEP-363856 
SEP-363856 
SEP-363856 
Dosage form 
Capsule 
Capsule 
Capsule 
Unit dose 
25 mg 
50 mg 
75 mg 
Route of 
administration 
Oral 
Oral 
Oral 
Physical description 
Size #0, Swedish Orange 
Capsule 
Size #0, Swedish Orange 
Capsule 
Size #0, Swedish 
Orange Capsule 
Excipients 
None 
None 
None 
9.2. 
Study Drug Packaging and Labeling 
9.2.1. 
Package Description 
Study drug will be provided in one-week blister cards containing 9 SEP-363856 25 mg, 50 mg, 
or 75 mg capsules (7 days + 2 extra days). 
9.2.2. 
Labeling Description 
All packaging for the study drugs will be labeled with: 
•
Protocol number
•
Sponsor’s name and address
•
Compound/Code or name of investigational drug and dosage form
•
Contents (eg, number of capsules)
•
Investigational Drug/caution statement
•
Instructions for use and storage
•
Batch number
•
Blank space to record visit number
•
Blank space for subject identifiers
•
Period of use (as required)
•
Unique medication/kit ID number
•
Investigator information (if needed)

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9.3. 
Study Drug Storage 
All study drug should be stored at United States Pharmacopeia (USP) controlled room 
temperature 20°C to 25°C (68°F to 77°F); excursions are permitted from 15°C to 30°C (59°F to 
86°F). 
9.4. 
Dispensing of Study Drug 
An Interactive Response System (IXRS) will be used to manage subject enrollment. The IXRS is 
an integrated web-based subject and drug management system.  
Study drug blister cards will be assigned by the IXRS based on the treatment schedule and dose 
adjustment criteria. The IXRS will generate instructions for which medication number to assign 
to a subject. Each subject will be dispensed one or four 9-day blister cards per scheduled visit 
depending on the timing of the next scheduled visit (see Table 2). 
Subjects will take one capsule of study drug per day at approximately the same time each 
evening before bed-time. Study drug may be taken with or without food. 
Study drug should be maintained under the strict control of qualified site staff at all times. 
Appropriate guidelines should be followed in proper dispensation to the study participant. Proper 
handling and storage should be followed. IXRS drug dispensing guidelines should be followed 
for dispensing study drug to the subject, in addition to all accountability records where required. 
Specific User Manuals will be supplied. 
9.5. 
Study Drug Accountability 
The Investigator or designee is responsible for storing the study drug in a secure location and for 
maintaining adequate records of drug disposition that includes the dates, quantity, and use by 
subjects. If the study is stopped for any reason or completed, all unused supplies of drug will be 
returned to the Sponsor, unless other instructions are provided in writing by Sponsor/contract 
research organization (CRO). 
Upon receipt of study drug, the Investigator or designee will inventory the supplies and verify 
receipt of supplies. The site will perform an acknowledgement of receipt via the IXRS, 
confirming the date of receipt, inventory and condition of study drug received. 
The Clinical Inventory Management System (CIMS) will be used for the accountability of the 
study drug at the clinical site. The Investigator or designee will maintain the inventory for 
accountability within CIMS, including CTM dispensation, return and availability of CTM 
received. The Investigator or designee will collect and document all used and unused study drug 
from study subjects at appropriate study visits. 
9.6. 
Study Drug Handling and Disposal 
Study drug will not be dispensed to any person who is not a study subject under this protocol. 
The Investigator or designee is required to return all unused study drug to the Sponsor or 
designee as instructed. The Investigator or designee is required to maintain copies of study drug 
shipping receipts, drug accountability records, and records of return or final disposal of the study 
drug in accordance with local regulatory requirements. 

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10.
TREATMENT OF SUBJECTS
10.1. 
Study Drug 
All study drug doses will consist of capsule(s) containing SEP-363856 administered orally. 
Subjects may take study drug with or without food at approximately the same time each evening 
before bed-time. 
Time and date of food intake must be recorded on Day 8, Day 29, Day 113, and Day 183 when 
blood samples are collected for determination of SEP-363856 and SEP-363854 concentrations. 
10.1.1. 
Dosage Adjustment Criteria 
All subjects will receive open-label SEP-363856 50 mg/day from Day 1 through Day 3. 
Beginning on Day 4, flexible dosing ranging from 25 – 75 mg/day is permitted, if deemed 
clinically necessary (for reasons of safety, tolerability, or efficacy) by the Investigator. On Day 4, 
subjects are permitted (but not required) to titrate up to 75 mg/day. Thereafter, if a dose increase 
is necessary to optimize efficacy it should occur at regular scheduled study visits based on 
Investigator judgement. Day 4 dosing changes will occur at an unscheduled visit. Thereafter, an 
increase in dose should occur at weekly intervals and in increments of one dose level at a time to 
a maximum dose of 75 mg/day. Dose reduction for tolerability purposes is allowed at any time 
during the study. 
10.2. 
Treatment Compliance 
The Investigator will record the dose of the study drug and the dates of the initial and final 
administration for each dose. 
Compliance must be monitored closely and determined at each visit. Subjects will be instructed 
to bring all used blister cards and unused study drug with them to each visit. Compliance will be 
assessed by counting capsules and dividing the actual number of doses taken (per capsule count) 
by the number of doses the subject should have taken within a visit period and multiplying 
by 100. All subjects will be reminded of the importance of strict compliance with taking study 
drug for the effectiveness of treatment and for the successful outcome of the study. Subjects who 
miss more than 25% of scheduled doses or take more than 125% of the scheduled doses will be 
considered noncompliant. Evidence of noncompliance must be immediately reported to the 
Clinical Research Associate (CRA) and/or Medical Monitor. 
10.3. 
Concomitant Medications and Restrictions 
The following information on all medication administered between Visit 1E and Visit 11E or at 
discontinuation will be recorded on the CRF: Medication name, dose, frequency, route, 
start date, stop date, and indication. 
Information on the format and version of coding dictionary is provided in the Data Management 
Plan (DMP). All medications will be coded using World Health Organization – Drug Dictionary 
(WHO-DD). 

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Table 6: 
Concomitant Medications/Therapies: Use During Study 
Type of Drug 
Baseline to End of Treatment 
Antipsychotic drugs other than study drug 
Not Permitted 
Mood stabilizers, antidepressants, or antiepileptic drugs 
Not Permitted 
Fluoxetine or MAO inhibitors 
Not Permitted 
Clozapine 
Not Permitted 
Investigational products for other clinical or post-marketing studies 
Not Permitted 
Electroconvulsive therapy 
Not Permitted 
Antiparkinsonian drugs 
Permitteda 
Anti-anxiety and Sedative Hypnotic agents 
Permitteda 
Drugs for acute or mild, chronic medical conditions 
Permitteda 
Non-prescription pain medications 
Permitted 
Herbal supplements (for psychotropic reasons) 
Not Permitted 
Abbreviations: MAO = Monoamine oxidase. 
a Permitted doses of these medications are specified in Section 10.3.1 and Section 10.3.2. 
10.3.1. 
Concomitant Nonpsychotropic Medications 
Medications for short-term treatment of an acute medical condition are allowed after consultation 
with the Medical Monitor. Non-psychotropic medications used to treat mild, chronic medical 
conditions is allowed if the dose and regimen have been stable (± 25%) for at least 30 days. The 
concomitant medication dose may change, as needed, after enrollment (or be discontinued). 
Β-adrenergic antagonists used to treat stable hypertension may be continued. In addition, use of 
non-prescription pain medications (eg, aspirin, acetaminophen) are allowed during all phases of 
the study provided these medications do not have a propensity for psychotropic effects and do 
not interfere with the evaluation of study drug. Female subjects may use oral, patch, or IUD 
hormonal contraceptives, or progestin implant or injection (detailed information on allowed 
contraceptives are defined in Section 21 Appendix II). 
10.3.2. 
Concomitant Psychotropic Medications 
All antidepressants and mood stabilizers (eg, lithium, divalproex/valproic acid, carbamazepine, 
etc.) are not allowed during the study. 
Treatment with benztropine (benzotropine outside the US) up to 6 mg/day will be permitted, as 
needed, for movement disorders. In cases where benztropine is not available or a subject has had 
an inadequate response or intolerability to benztropine treatment, the following medications may 
be used to treat acute extrapyramidal symptoms (EPS): biperiden (up to 16 mg/day) or 
trihexyphenidyl (up to 15 mg/day) or diphenhydramine (up to 100 mg/day). Treatment with 
propranolol (up to 120 mg/day) will be permitted as needed for akathisia. 
Medications used to treat movement disorders should not be given prophylactically. 

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•
Concomitant use of lorazepam, temazepam, eszopiclone, zopiclone, zaleplon,
zolpidem and zolpidem CR is permitted at the discretion of the Investigator with the
following restrictions:
− Lorazepam (or equivalent benzodiazepine) is permitted for clinically significant
anxiety/agitation or as a sedative/hypnotic up to a maximum daily dose of 
6 mg/day. Intramuscular lorazepam is permitted up to 4 mg/day for acute 
anxiety/agitation, as clinically indicated. Lorazepam should be used sparingly, 
when clinically required, per investigator judgment. 
− Temazepam (≤ 30 mg/day), eszopiclone (≤ 3 mg/day), zopiclone (≤ 7.5 mg/day), 
zaleplon (≤ 20mg/day), zolpidem (≤ 10 mg/day for males; ≤ 5 mg/day for 
females), and zolpidem CR (≤ 12.5 mg/day for males; ≤ 6.25 mg/day for females) 
may be administered at bedtime for insomnia, as needed. 
− Hypnotic agents should be administered no more than once nightly and should not 
be used in combination. 
The date and time of the last dose taken prior to scheduled assessments must be recorded at each 
visit. Subjects should be encouraged to avoid taking these medications within 8 hours of 
scheduled efficacy assessments. 
Medications used for the treatment of anxiety/agitation and insomnia (eg, lorazepam and 
zolpidem) should not be used in close temporal proximity (defined as administration within 
2 hours of each other). In regions that do not have the specified drugs available, similar drugs at 
equivalent dosages will be permitted as described in the Operations Manual or in consultation 
with the Medical Monitor. 
Subjects who require treatment with one or more of the restricted concomitant medications 
(including other antipsychotics or anxiolytics [lorazepam or equivalent above protocol-specified 
limits]) will be discontinued (as appropriate) from the study. 
10.3.3. 
Prohibited Medications 
All antipsychotics (except for study drug treatment), antidepressants and mood stabilizers (eg, 
lithium, divalproex/valproic acid, carbamazepine, lamotrigine, etc.) are not permitted during the 
study. 
Subjects who require treatment with one or more of prohibited concomitant medications 
(including antipsychotics [other than study drug treatment] or anxiolytics [lorazepam or 
equivalent above protocol-specified limits]) will be discontinued (as appropriate) from the study. 
Limited use of these medications immediately prior to study discontinuation is permitted and 
will not constitute a protocol deviation. 
10.3.4. 
Prohibited Therapies 
Subjects must not receive electroconvulsive therapy (ECT) during the study. 

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10.4. 
Other Restrictions 
Subjects must abstain from alcohol from enrollment through the end of the study. 
10.5. 
Description of Study Periods and Hospital Discharge 
10.5.1. 
Description of Study Periods 
The periods of the study, their duration, and subject status are provided below in Table 7. 
Table 7: 
Description of Study Periods 
Study Period 
Visit Number 
Study Week / Day 
Inpatient/Outpatient 
Baseline 
Visit 1E 
Day 1 
Inpatient optional (Investigator 
discretion) 
Open Label  
Treatment Period 
Visit 2E 
Week 1 / Day 8 ± 2 
Outpatient 
Visit 3E 
Week 2 / Day 15 ± 2 
Outpatient 
Visit 4E 
Week 3 / Day 22 ± 2 
Outpatient 
Visit 5E 
Week 4 / Day 29 ± 3 
Outpatient 
Visit 6E 
Week 8 / Day 57 ± 3 
Outpatient 
Visit 7E 
Week 12 / Day 85 ± 3 
Outpatient 
Visit 8E 
Week 16 / Day 113 ± 3 
Outpatient 
Visit 9E 
Week 20 / Day 141 ± 3 
Outpatient 
Visit 10E 
Week 24 / Day 169 ± 3 
Outpatient 
Visit 11E 
Week 26 / Day 183 ± 3 
Outpatient 
Follow-up 
(End of Study) 
Visit 12E 
Week 27 / Day 190 ± 2 
7 days after last dose 
(subjects who complete or 
discontinue) 
Inpatient optional (Investigator 
discretion) 
10.5.2. 
Hospital Discharge During the Study 
To facilitate enrollment and to optimize treatment compliance, an optional inpatient 
hospitalization period, at the Investigator’s discretion, can occur during the first week of open-
label treatment. Subjects are eligible for hospital discharge if they meet all of the following 
criteria:  
1. The subject is considered by the Investigator to be clinically stable and appropriate for
discharge to an outpatient or community setting.
2. There is no evidence of imminent danger to self or others.
3. Subject answers “no” to “Suicidal Ideation” item 4 (active suicidal ideation with some
intent to act, without specific plan) and item 5 (active suicidal ideation with specific plan
and intent) on the C-SSRS at time of evaluation.

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4. An outpatient environment is available that ensures continued safety for the subject and
continued contact with the treatment team for the remainder of the protocol.
5. A reliable informant (family member or caregiver) agrees to confirm adherence to study
drug during outpatient study participation.
If the subject cannot be transitioned to an outpatient setting, they must be discontinued from the 
study. After completion of the follow-up visit or upon study discontinuation; all subjects will be 
referred for appropriate continued treatment and follow-up care as determined by the 
Investigator. 
10.6. 
Guidance for Overdose 
Potential overdose to SEP-363856 has not been evaluated. Appropriate supportive measures 
should be instituted and close medical supervision and monitoring should continue until the 
subject recovers. Consider the possibility of multiple-drug overdose. 

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11.
STUDY ASSESSMENTS
A study schematic is presented in Figure 1. A summary of assessments to be conducted at each 
visit is presented in Table 2. 
11.1. 
Demographics and Baseline Characteristics 
Demographics (date of birth, sex, ethnicity, race), height, and medical and psychiatric history 
collected at Visit 1 of Study SEP361-201 will be carried over. Prior and current medications in 
Study SEP361-201will be carried over and will also be collected in the present study. 
11.2. 
Prior and Concomitant Medication Review 
See Section 10.3 for a complete description of medications permitted during the study. Site study 
staff will record all medications used to treat schizophrenia in the eCRF. Also, the following 
parameters will be recorded for all concomitant medications: drug name, route of administration, 
total daily dose, unit, frequency, start/stop dates, indication, and whether the medication was 
started after last dose of study drug. The prior and concomitant medications will subsequently be 
coded using the World Health Organization Drug Dictionary (WHO-DD). 
11.3. 
Efficacy Assessments 
11.3.1. 
Positive and Negative Syndrome Scale (PANSS) 
The PANSS is an interview-based measure of the severity of psychopathology in adults with 
psychotic disorders. The measure is comprised of 30 items and 3 scales: the Positive scale 
assesses hallucinations, delusions, and related symptoms; the Negative scale assesses emotional 
withdrawal, lack of motivation, and similar symptoms; and the General Psychopathology scale 
addresses other symptoms such as anxiety, somatic concern, and disorientation. An anchored 
Likert scale from 1 - 7, where values of 2 and above indicate the presence of progressively more 
severe symptoms, is used to score each item. Individual items are then summed to determine 
scores for the 3 scales, as well as a total score. A Composite scale score (Positive scale score 
minus Negative scale score) can also be calculated to show the relative valence of positive and 
negative symptoms. Total time required for the PANSS interview and scoring is approximately 
30 – 40 minutes (Guy-1976, Kay-1994; Opler-1992; Perkins-2000). PANSS raters will be 
required to meet specific training and education criteria before they are certified to rate for this 
study. In addition, raters will receive specific training and education regarding all of the 
assessments prior to study initiation. 
11.3.2. 
Brief Negative Symptom Scale (BNSS) 
The BNSS is a rating scale to measure the current level of severity of negative symptoms in 
schizophrenia and schizoaffective disorder. The measure is comprised of 13 individual items and 
5 domain scores (blunted affect, alogia, avolition, anhedonia, and asociality). The 5 domain 
scores provide a summary score and the 13 individual items provide a composite total score 
(ranging from 0 to 78). Each of the items are scored on a Likert-type 7-point scale from 0 - 6, 
where values of 0 indicates symptom is absent and a value of 6 means the symptom is a severe 
form. The number of items varies per domain. BNSS raters will be required to meet specific 

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training and education criteria before they are certified to rate for this study. In addition, raters 
will receive specific training and education regarding all of the assessments prior to study 
initiation. 
11.3.3. 
Montgomery-Asberg Depression Rating Scale (MADRS) 
The MADRS is a clinician-rated assessment of the subject’s level of depression. The measure 
contains 10 items that measure apparent and reported sadness, inner tension, reduced sleep and 
appetite, difficulty concentrating, lassitude, inability to feel, and pessimistic and suicidal 
thoughts. Each item is scored in a range of 0 to 6 points, with higher scores indicating increased 
depressive symptoms. The Structured Interview Guide for the MADRS (SIGMA) 
(Williams-2008) will be used for the administration of the MADRS assessment. The MADRS 
will be administered by a qualified rater at the site. 
11.3.4. 
Clinical Global Impressions – Severity Scale (CGI-S) 
The CGI-S is a clinician-rated assessment of the subject’s current illness state on a 7-point scale, 
where a higher score is associated with greater illness severity. Following a clinical interview, 
the CGI-S can be completed in 1 to 2 minutes. The CGI-S will be administered by a qualified 
rater at the site. 
11.3.5. 
CogState Brief Battery (CBB) and CogState Schizophrenia Battery (CSB) 
The CBB will be completed at Visit 1E (ie, Baseline, which is the same day as Visit 7 of Study 
SEP361-201). The CBB assesses four domains. The Detection test (Attention Domain) measures 
speed of performance. The mean of the log10 transformed reaction times for correct responses 
are utilized to determine the score. Lower scores correspond to better performance. The 
Identification test (Information Processing Domain also measures speed of performance. The 
mean of the log10 transformed reaction times for correct responses are utilized to determine the 
score. Lower scores correspond to better performance. The One Card Learning test (Visual 
Learning Domain) measures accuracy of performance. Arcsine transformation of the proportion 
of correct responses are utilized to determine the domain score. Higher scores correspond to 
better performance. The One-back Memory test (Working Memory Domain) measures Arcsine 
transformation of the proportion of correct responses is utilized to determine the domain score. 
Higher scores correspond to better performance. 
The CSB will be completed at Visit 7E (Week 12) and Visit 11E (Week 26). The CSB includes 
the four domains of the CBB and three additional domains. The Internal Shopping List (Verbal 
Learning Domain) measures the total number of correct responses made in remembering the list 
on three consecutive learning trials. Higher scores correspond to better performance. Groton 
Maze Learning (Problem Solving Domain) measures the total number of errors made in 
attempting to learn the same hidden pathway on five consecutive trials. Lower scores correspond 
to better performance. Social Emotional Cognition (Social Cognition Domain) measures 
accuracy of performance. Arcsine transformation of the proportion of correct responses is 
utilized to determine the domain score. Higher scores correspond to better performance. 

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11.3.6. 
University of California, San Diego, Performance-Based Skills Assessment-Brief 
(USPA-B) 
University of California, San Diego, Performance-Based Skills Assessment-Brief (USPA-B) 
assesses everyday functioning in persons with serious mental illness (Mausbach-2007). The 
UPSA-B, consists of 2 subscales (communication and financial). The UPSA-Brief is a measure 
of functional capacity in which patients are asked to role-play tasks in 2 areas of functioning: 
(1) communication and (2) finances. The UPSA-Brief requires approximately 10 – 15 minutes to 
complete and will be administered by a trained professional. 
11.4. 
Safety Assessments 
The Investigator or appropriate designee will review results of safety assessments on a regular 
basis and the Sponsor must be kept fully informed of any clinically significant findings either at 
baseline or subsequently during study conduct. 
11.4.1. 
Adverse Events 
Adverse events will be collected for each subject. Subjects should be queried in a non-leading 
manner, without specific prompting (eg, “Has there been any change in your health status since 
your last visit?”). See Section 12, Safety Reporting. 
AEs and SAEs will be monitored throughout the study at all visits. 
11.4.2. 
Clinical Laboratory Tests 
The clinical laboratory tests required by protocol are listed in Section 22, Appendix III. 
Blood and urine samples will be collected for clinical laboratory tests. For detailed instructions 
regarding clinical laboratory procedures, sampling, and shipping guidelines refer to the Central 
Laboratory Instructions Manual. Samples will be processed at a central laboratory to ensure 
consistency. All clinical laboratories will be College of American Pathologists (CAP), Clinical 
Laboratory Improvement Amendments (CLIA) and/or other laboratory certifications or 
equivalent accreditation documents. 
Any POC (point of care) kits that are performed on site by study personnel rather than in a lab- 
must be CLIA waived and the study center must possess a CLIA certificate of Waiver. 
11.4.3. 
Vital Signs 
Blood pressure and heart rate measurements will be taken in a sitting and standing position. 
Respiratory rate and temperature will also be measured and all measurements will be recorded in 
the eCRF. Clinically significant changes from the signing of the ICF should be captured as AEs 
in the eCRF. 
Supine systolic and diastolic blood pressures, respiratory rate, pulse rate, and oral temperature 
will be measured following 5 minutes of seated rest. 
Blood pressure and pulse rate should first be taken with the subject in the supine position after 
resting for ≥ 5 minutes. Blood pressure and pulse rate will be taken again after standing for 2 to 
4 minutes. The same arm should be used during each assessment of blood pressure and pulse rate 
throughout the study. If a subject develops symptoms consistent with orthostatic hypotension 

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(light-headedness, dizziness, or changes in sensorium upon standing) at any point, his or her 
supine and standing blood pressure and pulse rate should be collected at that time in the manner 
described above. Vital signs will be obtained prior to clinical laboratory collection and 
performance of an ECG. 
11.4.4. 
Electrocardiograms (ECGs) 
All ECGs will be obtained in the supine position, after the subject has been resting supine for at 
least 5 minutes. ECGs will be 12-lead with a 10-second rhythm strip. ECGs should be obtained 
prior to drawing blood samples. All attempts should be made to use the same ECG recorder for 
all visits within individual subjects. Refer to Section 20 Appendix I for additional information. 
ECG parameters to be collected include ventricular heart rate (beats/min), QT interval (msec), 
PR interval (msec), QRS interval (msec) ,RR interval (msec), and overall ECG interpretation 
(Normal, Abnormal NCS, Abnormal CS). 
It is the responsibility of the Investigator to perform a safety review of the ECG data for changes 
from previous assessments and/or emergent cardiac dysfunction, and to determine subjects’ 
eligibility for or continuance in the study. Abnormalities require comment as NCS or CS. 
Typically, CS designated events will be reported as adverse events. 
ECGs will be reviewed, signed and dated by the Investigator after each ECG collection. The 
same physician should review all ECG reports for a given subject whenever possible. 
The original ECG tracing will be kept with subject’s source documentation. A copy may be 
collected by the Sponsor. 
11.4.5. 
Physical and Neurological Examination 
Full PE as well as a neurological examination will be performed. The PE includes an assessment 
of general appearance and a review of systems (dermatologic, head, eyes, ears, nose, 
mouth/throat/neck, thyroid, lymph nodes, respiratory, cardiovascular, gastrointestinal, 
extremities, musculoskeletal, neurologic, and psychiatric systems). 
The physical and neurological examination results at Visit 1 (screening) of Study SEP361-201 
will be carried over. All PE and neurological exam findings at screening of Study SEP361-201 
will be captured in the medical history in the CRF. Any clinically significant changes from 
screening in Study SEP361-201, as determined by the Investigator, will be noted as AEs in the 
CRF. 
11.4.6. 
Height, Weight, and BMI 
Weight will be measured in kilograms. Weight will be measured in street clothes, without shoes 
and coat/jacket. 
Height in meters will be carried over from study SEP361-201. Height will be measured without 
shoes. 
BMI for all visits will be derived within the Electronic Data Capture (EDC) system. 
Waist circumference will be measured in inches or centimeters and recorded in the eCRF. 

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11.4.7. 
Safety Scales 
11.4.7.1. Abnormal Involuntary Movement Scale (AIMS) 
The AIMS is a clinician-rated assessment of abnormal movements consisting of unobtrusive 
observation of the subject at rest (with shoes removed) and several questions or instructions 
directed toward the subject. Using a severity scale ranging from 0 (none) to 4 (severe), clinicians 
rate dyskinesia in several body regions, including the facial area, extremities, and trunk. There 
are two items related to dental status, as well as three global impression items assessing overall 
severity, incapacitation, and the subject’s awareness of abnormal movements (Guy-1976; 
Munetz-1988). The AIMS raters will be required to meet specific credential and educational 
criteria before they are certified to rate for this study. The AIMS will be administered by a 
qualified rater at the site. 
11.4.7.2. Barnes Akathisia Rating Scale (BARS) 
The BARS is a rating scale geared toward assessment of neuroleptic-induced akathisia, though it 
can be used to measure akathisia associated with other drugs as well. The BARS consists of four 
items, including one item assessing objective restlessness, two items targeting subjective 
restlessness (awareness and related distress), and one global clinical assessment item. All items 
are anchored and utilize a 4-point scale, except for the global rating which has a 6-point scale 
(from absence of akathisia through severe akathisia). The subjective and objective items are 
summed to yield a total score. The BARS can be administered in about 10 minutes 
(Barnes-1989; Barnes-2003). The BARS will be administered by a qualified rater at the site. 
11.4.7.3. Simpson-Angus Scale (SAS) 
The SAS is a clinician-rated assessment of neuroleptic-induced Parkinsonism consisting of 
10 items. Items are anchor-based, rated on a 5-point scale, and address rigidity, gait 
(bradykinesia), tremor, glabellar tap, and salivation (Siddiqui-2009; Simpson-1970). The SAS 
will be administered by a qualified rater at the site. A modified version of the SAS will be 
utilized for this study (SAS). 
11.4.7.4. Columbia Suicide Severity Rating Scale (C-SSRS) 
The C-SSRS is a tool designed to systematically assess and track suicidal adverse events 
(suicidal behavior and suicidal ideation) throughout the trial. The strength of this suicide 
classification system is in its ability to comprehensively identify suicidal events while limiting 
the over-identification of suicidal behavior. The scale takes approximately 5 minutes to 
administer. The C-SSRS will be administered by a trained rater at the site. Subjects with Type 4 
or 5 suicidal ideation during the study will be discontinued from the study and referred to a 
mental health professional (Posner-2007). For all visits the “Since Last Visit” version of the 
C-SSRS will be used. 
11.4.7.5. Drug Effects Questionnaire (DEQ) 
A Drug Effects Questionnaire designed to assess subjective effects will be completed by the 
subject. The DEQ consist of 3 questions scored on a visual analog scale (VAS). 

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11.4.7.6. Pittsburg Sleep Quality Index (PSQI) 
The Pittsburgh Sleep Quality Index (PSQI) consists of 19 self-rated questions used to measure 
the quality and patterns of sleep in adults. It differentiates “poor” from “good” sleep quality by 
measuring seven areas (components): subjective sleep quality, sleep latency, sleep duration, 
habitual sleep efficiency, sleep disturbances, use of sleeping medications, and daytime 
dysfunction over the last month (Buysse 1989). 
11.5. 
Population Pharmacokinetic Assessments 
All blood samples for determination of plasma SEP-363856 and SEP-363854 concentrations will 
be obtained at the same time that other blood samples are taken whenever possible. The time and 
date of the 3 previous doses of study drug, date, and clock time of blood sampling must be 
recorded. Date and clock time of food intake must be recorded at Visit 2E, 4E, 8E, and 11E when 
blood samples are collected for determination of plasma SEP-363856 and SEP-363854 
concentrations. POPPK analysis will be performed using plasma SEP-363856 concentrations; the 
results of which will be reported separately. The relationship between PANSS total score and 
plasma SEP-363856 exposure will be explored using population PK/pharmacodynamics (PD) 
methods, and reported separately. The impact of cytochrome (CYP) P450 CYP2D6 metabolizer 
status on SEP-363856 plasma exposure will be explored and reported separately. See Section 23 
Appendix IV for details including instructions of processing PK samples. 
11.6. 
Study Visits and Assessments 
See Table 2 Schedule of Assessments, for a summary of procedures at each study visit. 
11.6.1. 
Baseline: Visit 1E (Day 1) 
Visit 1E of the present study is on the same day as Visit 7 of Study SEP361-201. Subjects will be 
evaluated at the Open-label Baseline Visit to determine their eligibility for the study. The 
following procedures will be conducted during this visit: 
•
Obtain signed informed consent and privacy authorization from the subject before
conducting any other visit procedures.
•
Inclusion and exclusion criteria
•
USPA-B
•
Dispense study drug
Results for the following study-related procedures will be carried over from the core study 
Week 4 visit and do not need to be performed for the Open-label Baseline visit: 
•
Adverse events monitoring
•
Prior/concomitant medication review
•
Physical and neurological examinations
•
Vital signs
•
Weight and waist circumference

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•
ECG
•
Clinical laboratory tests (hematology, serum chemistry, serum prolactin, glycosylated
hemoglobin [HbA1c], glucose panel and lipid panel)
•
Blood sample for plasma SEP-363856 and SEP-363854
•
Urine sample for urinalysis, urine drug screen (UDS), and urine pregnancy test
(human chorionic gondadotropin [β-HcG])
•
PANSS
•
BNSS
•
MADRS
•
C-SSRS
•
CGI-S
•
AIMS
•
BARS
•
SAS
•
PSQI
•
DEQ
•
CBB
Procedures are to be completed in the following order: 
1. PANSS (study center rater)
2. BNSS (study center rater)
3. MADRS (study center rater)
4. C-SSRS (study center rater)
5. CGI-S (study center rater)
6. AIMS/BARS/SAS
7. PSQI
8. DEQ
9. CSB
10. USPA-B
Note: With the exception of the DEQ and the USPA-B, all rating assessments will be performed by the rater using a 
tablet. In the event that a tablet is not available, the rating assessments will be performed by the rater using a paper 
version of the assessment. 
Data such as demographics and height will be carried over from the Screening visit in 
Study SEP361-201. 
Further information on data carried over from Study SEP361-201 will be addressed in the Data 
Management Plan (DMP). 

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11.6.2. 
Visit 2E (Week 1; Day 8 ± 2) 
The following procedures will be conducted during this visit: 
•
Dispense study drug
•
Study drug accountability
•
AE monitoring
•
Prior/concomitant medications.
•
Vital sign measurements (prior to ECG)
•
Weight and waist circumference
•
Perform standard 12-lead ECG
•
Fasted blood samples for clinical laboratory evaluation (hematology, serum
chemistry, serum prolactin, glycosylated hemoglobin [HbA1c], glucose panel and
lipid panel).
•
Blood sample for plasma SEP-363856 and SEP-363854
•
Urine sample for urinalysis, UDS, and β-hcG (for female subjects).
•
PANSS
•
BNSS
•
MADRS
•
C-SSRS
•
CGI-S
•
AIMS
•
BARS
•
SAS
•
PSQI
A telephone contact will be made by a member of the research staff to the subject between 
Week 1 and Week 2 to monitor clinical symptoms and adverse events. If subject appears to be 
symptomatic during the telephone contact, an unscheduled visit will be made as early as possible 
(see Section 11.6.11). 
11.6.3. 
Visit 3E (Week 2; Day 15 ± 2) 
The following procedures will be conducted during this visit: 
•
Dispense study drug
•
Study drug accountability
•
AE monitoring
•
Prior/concomitant medications

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•
Urine sample for β-hcG (for female subjects)
•
PANSS
•
BNSS
•
MADRS
•
C-SSRS
•
CGI-S
•
AIMS
•
BARS
•
SAS
11.6.4. 
Visit 4E (Week 3; Day 22 ± 2) 
The following procedures will be conducted during this visit: 
•
Dispense study drug
•
Study drug accountability
•
AE monitoring
•
Prior/concomitant medications
•
Vital sign measurements
•
Weight and waist circumference
•
Urine sample for β-hcG (for female subjects)
•
PANSS
•
BNSS
•
MADRS
•
C-SSRS
•
CGI-S
•
AIMS
•
BARS
•
SAS
11.6.5. 
Visit 5E (Week 4; Day 29 ± 3) 
The following procedures will be conducted during these visits: 
•
Dispense study drug
•
Study drug accountability
•
AE monitoring

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• Prior/concomitant medications 
• Physical and neurological examinations 
• Vital sign measurements (prior to ECG) 
• Weight and waist circumference 
• Perform standard 12-lead ECG 
• Fasted blood samples for clinical laboratory evaluation (hematology, serum 
chemistry, serum prolactin, glycosylated hemoglobin [HbA1c], glucose panel and 
lipid panel) 
• Blood sample for plasma SEP-363856 and SEP-363854 
• Urine sample for urinalysis, UDS, and β-hcG (for female subjects). 
• PANSS 
• BNSS 
• MADRS 
• C-SSRS 
• CGI-S 
• AIMS 
• BARS 
• SAS 
• PSQI 
A telephone contact will be made by a member of the research staff to the subject at Weeks 5 
and Week 7 to monitor clinical symptoms and adverse events. If subject appears to be 
symptomatic during the telephone contact, an unscheduled visit will be made as early as possible 
(see Section 11.6.11). 
11.6.6. 
Visit 6E (Week 8; Day 57 ± 3) and Visit 7E (Week 12; Day 85 ± 3) 
The following procedures will be conducted during these visits: 
• Dispense study drug 
• Study drug accountability 
• AE monitoring 
• Prior/concomitant medications 
• Physical and neurological examinations: Week 8 (Day 57) only 
• Vital sign measurements (prior to ECG) 
• Weight and waist circumference 
• Perform standard 12-lead ECG 

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• Urine sample for β-hcG (for female subjects) 
• PANSS 
• BNSS 
• MADRS 
• C-SSRS 
• CGI-S 
• AIMS 
• BARS 
• SAS 
• PSQI: Week 12 (Day 85) only 
• CSB: Week 12 (Day 85) only 
• USPA-B: Week 12 (Day 85) only 
A telephone contact will be made by a member of the research staff at Weeks 9, 11, 13, and 15 to 
monitor clinical symptoms and adverse events. If subject appears to be symptomatic during the 
telephone contact, an unscheduled visit will be made as early as possible (see Section 11.6.11). 
11.6.7. 
Visit 8E (Week 16; Day 113 ± 3) 
The following procedures will be conducted during these visits: 
• Dispense study drug 
• Study drug accountability 
• AE monitoring 
• Prior/concomitant medications 
• Physical and neurological examination 
• Vital sign measurements (prior to ECG) 
• Weight and waist circumference 
• Perform standard 12-lead ECG 
• Fasted blood samples for clinical laboratory evaluation (hematology, serum 
chemistry, serum prolactin, glycosylated hemoglobin [HbA1c], glucose panel and 
lipid panel) 
• Blood sample for plasma SEP-363856 and SEP-363854 
• Urine sample for urinalysis, UDS, and β-hcG (for female subjects) 
• PANSS 
• BNSS 

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• MADRS 
• C-SSRS 
• CGI-S 
• AIMS 
• BARS 
• SAS 
A telephone contact will be made by a member of the research staff at Weeks 17 and 19. If 
subject appears to be symptomatic during the telephone contact, an unscheduled visit will be 
made as early as possible (see Section 11.6.11). 
11.6.8. 
Visit 9E (Week 20; Day 141 ± 3) and Visit 10E (Week 24; Day 169 ± 3) 
The following procedures will be conducted during these visits: 
• Dispense study drug 
• Study drug accountability 
• AE monitoring 
• Prior/concomitant medications 
• Vital sign measurements (prior to ECG) 
• Weight and waist circumference 
• Perform standard 12-lead ECG 
• Urine sample for β-hcG (for female subjects) 
• PANSS 
• BNSS 
• MADRS 
• C-SSRS 
• CGI-S 
• AIMS 
• BARS 
• SAS 
• PSQI: Week 24 (Day 169) only 
A telephone contact will be made by a member of the research staff at Weeks 21, 23, and 25 to 
monitor clinical symptoms and adverse events. If subject appears to be symptomatic during the 
telephone contact, an unscheduled visit will be made as early as possible (see Section 11.6.11). 

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11.6.9. 
Visit 11E (Week 26; Day 183 ± 3, Early Termination) 
The following procedures will be conducted during this visit: 
• Study drug accountability 
• AE monitoring 
• Prior/concomitant medications 
• Physical and neurological examination 
• Vital sign measurements (prior to ECG) 
• Weight and waist circumference 
• Perform standard 12-lead ECG 
• Fasted blood samples for clinical laboratory evaluation (hematology, serum 
chemistry, serum prolactin, glycosylated hemoglobin [HbA1c], glucose panel and 
lipid panel) 
• Blood sample for plasma SEP-363856 and SEP-363854 
• Urine sample for urinalysis, UDS, and β hcG (for female subjects) 
• PANSS 
• BNSS 
• MADRS 
• C-SSRS 
• CGI-S 
• AIMS 
• BARS 
• SAS 
• PSQI 
• DEQ 
• CSB 
• USPA-B 
11.6.10. 
Visit 12E (Week 27; Day 190 ± 2, Follow-up, End of Study) 
All subjects will have a follow-up prior to discharge (7 ± 2 days) after their last dose of study 
drug. The following procedures will be conducted during this visit: 
• AE monitoring 
• Prior/concomitant medications. 
• Vital sign measurements (prior to ECG) 

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• Urine sample for β-hcG (for female subjects) 
• C-SSRS 
• DEQ 
• PSQI 
11.6.11. 
Unscheduled Visit (Subjects Who Appear Symptomatic during Telephone 
Contacts) 
If subject appears to be symptomatic during a telephone contact, an unscheduled visit will be 
made as early as possible. The following procedures will be conducted during this visit: 
• Study drug accountability 
• AE monitoring 
• Prior/concomitant medications 
• Physical and neurological examination 
• Vital sign measurements (prior to ECG) 
• Perform standard 12-lead ECG 
• Physical and neurological examination 
• Fasted blood samples for clinical laboratory evaluation (hematology, serum 
chemistry, serum prolactin, glycosylated hemoglobin [HbA1c], glucose panel and 
lipid panel) 
• Urine sample for urinalysis, UDS, and β hcG (for female subjects) 
• PANSS 
• BNSS 
• MADRS 
• C-SSRS 
• CGI-S 
• AIMS 
• BARS 
• SAS 
If a subject titrates up to 75 mg/day on Day 4 (permitted but not required) an unscheduled visit 
must occur. The following procedures will be conducted during this visit: 
• Study drug accountability 
• AE monitoring 
• Prior/concomitant medications 
Other assessments are not required on Day 4, but are permitted, based on Investigators judgment. 

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12.
SAFETY REPORTING
12.1. 
Definitions 
12.1.1. 
Adverse Events 
An adverse event (AE) is any untoward medical occurrence associated with the use of a drug in 
humans, whether or not considered drug related. 
Untoward medical occurrences that occur between the time of signing the ICF and first drug 
administration are pre-treatment events. Those that occur after first administration of study drug 
are considered AEs. 
An AE can, therefore, be any unfavorable and unintended sign (including an abnormal laboratory 
finding), symptom, or disease occurring after the administration of a medicinal (investigational) 
product, whether or not considered related to the medicinal (investigational) product. AEs may 
include the onset of new illness and the exacerbation of pre-existing conditions. AEs will be 
collected from after first administration of study drug to the last study visit. 
The Investigator should attempt to establish a diagnosis of the event based on signs, symptoms, 
and/or other clinical information. In such cases, the diagnosis should be documented as the AE 
and not the individual signs/symptoms. 
12.1.2. 
Serious Adverse Events 
A serious adverse event (SAE) is an AE that meets one or more of the following criteria: 
•
Results in death.
•
Is life-threatening.
•
Requires hospitalization or prolongation of existing hospitalization.
•
Results in persistent or significant disability or incapacity.
•
Is a congenital anomaly or birth defect.
•
Is an important medical event that may jeopardize the subject or may require a
medical or surgical intervention to prevent one of the outcomes listed above.
Examples of such medical events include allergic bronchospasm requiring intensive
treatment in an emergency room or at home, blood dyscrasias or convulsions that do
not result in inpatient hospitalization.
The term "severe" is often used to describe the severity of a specific event (as in mild, moderate, 
or severe myocardial infarction) (see Section 12.3); the event itself, however, may be of 
relatively minor medical significance (such as severe headache). This is not the same as 
"serious," which is based on subject/event outcome or action criteria usually associated with 
events that pose a threat to a subject's life or functioning as defined by the criteria above. 
During the study, if a subject has a hospitalization or procedure (eg, elective surgery) that was 
scheduled before the study entry, ie, before informed consent for an event/condition that 
occurred before the study, the hospitalization is considered a therapeutic intervention and not the 

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result of a SAE. However, if the event/condition worsens during the study, it should be reported 
as an AE (or SAE, if the event/condition results in a serious outcome such as prolongation of 
hospitalization). 
Life-threatening means that the subject was, in the view of the Investigator, at immediate risk of 
death from the event as it occurred. This definition does not include an event that had it occurred 
in a more severe form might have caused death. 
SAE criteria information will be captured on the CRF. 
12.2. 
Objective Findings 
Clinically significant abnormal objective findings (eg, clinical laboratory value, ECG value, and 
physical examination observation) will also be recorded as AEs. 
When a clear diagnosis is available that explains the objective findings, this diagnosis will be 
recorded as the AE, and not the abnormal objective finding (eg, viral hepatitis will be recorded as 
the AE, not transaminase elevation). If a definite diagnosis is not available, then record the sign 
(eg, clinically significant elevation of transaminase levels) or symptom (eg, abdominal pain) as 
the AE. 
Clinical laboratory test results will be reviewed by the Investigator. The Investigator must 
determine the clinical significance of all out of range values. Clinical laboratory test with 
possibly drug-related or clinically relevant abnormal values of uncertain causality may be 
repeated. Any abnormal values that persist should be followed at the discretion of the 
Investigator. Laboratory reports will be initialed and dated on all pages by the Investigator. 
Clinical Laboratory Tests Outside the Normal Range: Any value outside the normal range will be 
flagged for the attention of the Investigator or appropriate designee at the study center. The 
Investigator or appropriate designee will indicate whether or not the value is of clinical 
significance. If the result of any test (or repeat test, if done) from the samples taken is indicated 
as clinically significant and is not covered by the inclusion criteria in Section 8.1, the subject will 
not be allowed into the study. Additional testing during the study may be done if medically 
indicated. If a clinically significant abnormality is found in the samples taken after dosing, 
during the study, and/or at the Follow-Up Visit, this should be recorded as an AE and the subject 
will be followed until the test(s) has (have) normalised or stabilised. 
All on-site ECG tracings and ECG over-read reports will be reviewed by the Investigator. The 
Investigator must determine the clinical significance of all abnormal ECGs. ECG with possibly 
drug-related or clinically relevant abnormal findings of uncertain causality may be repeated. Any 
abnormal ECGs that persist should be followed at the discretion of the Investigator. ECG 
tracings will be initialed and dated on all pages by the Investigator. 
12.3. 
Collection and Recording of Adverse Events 
All pre-treatment events and AEs must be recorded in the subject’s study records/source 
documents in accordance with the Investigator’s normal clinical practice. All pre-treatment 
events and AEs/all AEs must be recorded on the CRF. 
All AEs will be followed until resolution, stabilization of the condition, the event is otherwise 
explained, or the subject is lost to follow-up. 

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Each AE is to be evaluated for duration, severity, frequency, seriousness, action taken with the 
study treatment, outcome, and causal relationship to the study treatment. Definitions for severity, 
frequency, action taken with the study treatment, outcome, and causal relationship to the study 
treatment are presented below. 
The severity of AE: 
•
Mild - Ordinarily transient symptoms that do not influence performance of subject’s
daily activities. Other treatment is not ordinarily indicated.
•
Moderate - Marked symptoms sufficient to make the subject uncomfortable.
Moderate influence on performance of subject’s daily activities. Other treatment may
be necessary.
•
Severe - Symptoms cause considerable discomfort. Substantial influence on subject’s
daily activities. May be unable to continue the study, and other treatment may be
necessary.
The frequency of AE: 
•
Once – an isolated episode.
•
Intermittent – occurs on two or more separate occasions.
•
Continuous – does not abate from date of onset to date of resolution.
The action taken with the study treatment: 
•
Drug Interrupted – Study drug stopped temporarily.
•
Drug Withdrawn – Study drug stopped permanently.
•
Dose Reduced.
•
Dose Increased.
•
Dose Not Changed.
•
Not Applicable.
•
Unknown
The outcome of the AE: 
•
Recovered/Resolved
•
Recovering/Resolving
•
Not Recovered/Not Resolved
•
Recovered/Resolved with Sequelae
•
Fatal
•
Unknown
The causal relationship of the AE to the study treatment: 
•
Not related

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o
Not related - Improbable temporal relationship and is plausibly related to
other drugs or underlying disease.
•
Related
o
Possible - occurred in a reasonable time after study drug administration, but
could be related to concurrent drugs or underlying disease.
o
Probable - occurred in a reasonable time after study drug administration, is
unlikely to be attributable to concurrent drugs or underlying disease, and there
is a plausible mechanism to implicate the study drug.
o
Definite - occurred in a reasonable time after study drug administration and
cannot be explained by concurrent drugs or underlying disease. The adverse
event should respond to dechallenge/rechallenge, however, this is not
mandatory before assigning a definite causality.
The Medical Monitor is the initial contact person for protocol related questions or discussion of 
AEs. The contact information for the Medical Monitor as well as other emergency contact 
information can be found in Table 1 of this protocol. 
12.4. 
Immediately Reportable Events 
The following medical events must be immediately reported to the Sponsor: 
•
SAE
•
Pregnancy
Emergency contact information can be found in Table 1. 
12.4.1. 
Serious Adverse Event 
If the Investigator or study center staff becomes aware of a SAE that occurs in a study subject 
after first administration of study drug through 30 days following the last dose of the study drug, 
this must be reported immediately to the Sponsor whether considered related or unrelated to the 
study drug. SAEs must be recorded on the CRF and the data recorded should agree with that on 
the SAE form. 
Following the end of subject participation in the study, the Investigator or an authorized delegate 
should report SAEs “spontaneously” to PPD-PVG if considered at least possibly related to the 
study drug. 
SAEs will be followed until resolution, loss to follow-up, stabilization of condition, or the event 
is otherwise explained. 
In addition to the initial telephone notification, an initial SAE form as applicable must be 
completed and signed and sent via fax or email (see Table 1) to PPD-PVG within 24 hours of the 
Investigator or study center staff becoming aware of the event. The SAE form must be signed by 
the Investigator or appropriate designee. PPD-PVG provides the SAE form used to report SAEs. 
The Sponsor or designee will promptly notify all study centers and Investigators of a SAE that is 
determined to be expedited to the Regulatory Authorities in accordance with applicable law(s) 
and regulation(s). These SAEs must be promptly reported to the Institutional Review Board 

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(IRB) or Independent Ethics Committee (IEC) by the Investigator or the appropriate person at 
the study center if required per IRB/IEC guidelines. 
For the UK, the appropriate Pharmacovigilance (PVG) group must be contacted immediately 
upon first knowledge of the incident. The immediate report should be made by the Investigator 
within a very short period of time and under no circumstances should this exceed 24 hours 
following knowledge of the serious adverse event or pregnancy. 
12.4.2. 
Pregnancy 
Pregnancies that occur from the time that informed consent is signed through 90 days following 
the last dose of the study drug will be collected and reported on the Pregnancy Event Form. 
If a subject becomes pregnant during the course of the study, she will be instructed to commence 
discontinuation of the study drug. Further, the subject (or female partner of male subject) will be 
instructed to return promptly/within 48 hours of the first notification of pregnancy to the study 
center and undergo a serum/urine pregnancy test, as confirmation of pregnancy. If positive, the 
female pregnant subject will no longer receive any additional study drug. All pregnancies, 
whether or not the subject received any additional study drug, will be followed until resolution 
(ie, termination [voluntary or spontaneous] or birth). 
To report a pregnancy, the Pregnancy Event Form must be completed and sent via fax to 
PPD-PVG within 24 hours of the Investigator or study center staff becoming aware of the 
pregnancy. The Sponsor provides the Pregnancy Event Form. 
If the subject received blinded study drug, unblinding of the study drug will be offered to the 
subject when knowledge of such treatment may have an impact on further treatment decisions. 
Otherwise, information regarding to what treatment the subject was assigned may be provided 
when the study has ended. 
Pregnancy itself is not regarded as an AE unless there is a suspicion that the study drug may have 
interfered with the effectiveness of a contraceptive medication or other AEs were detected. 

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13.
TERMINATION OF SUBJECT FROM
STUDY/DISCONTINUATION OF STUDY DRUG
13.1. 
Criteria for Subject Termination/Study Drug Discontinuation 
Subjects may be discontinued from the study drug at any time for any of the following reasons: 
•
Adverse event (specify)
•
Lack of efficacy (specify)
•
Withdrawal by subject (specify)
•
Non-compliance with study drug (specify)
•
Protocol deviation (specify)
•
Death
•
Progressive disease
•
Pregnancy
•
Other (specify)
If at any time during the course of the study, in the opinion of the Investigator, the subject may 
no longer safely participate due to a change in medical status (eg, experiences an AE, becomes 
pregnant), the subject must be discontinued from the study drug. Subjects discontinued from 
study drug will be discontinued from the study. 
The reason and information on the epoch for study drug discontinuation will be recorded on the 
appropriate CRF. In case of death, the date of death should be captured on the CRF. 
13.2. 
Clinical Assessments after Study Drug Discontinuation 
Subjects who have not received study drug will not be followed up on leaving the study. 
For subjects who have received study drug and prematurely discontinue from the study treatment 
(i.e., do not complete through Visit 11E), every effort should be made to complete the final 
evaluation procedures, in accordance with the early termination (ET) visit described in 
Section 11.6.9. 
All subjects who discontinue from the study early will complete a follow up visit 7 (±2) days 
after the last visit to assess any post study discontinuation adverse effects as described in 
Section 11.6.10. 

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14.
STUDY TERMINATION
The Sponsor reserves the right to discontinue the study at this study center or at multiple centers 
for safety or administrative reasons at any time while safeguarding that early termination does 
not compromise subjects’ safety or well-being. In particular, a study center that does not recruit 
at an acceptable rate may be closed. Should the study be terminated and/or the study center 
closed for whatever reason, all documentation and study drugs pertaining to the study must be 
returned to the Sponsor or its representative. 
If, in the opinion of the Investigator, clinical observations suggest it may be unsafe to continue, 
the Investigator may terminate part or the entire study after consultation with the Sponsor. 
In the event of study or site termination, subjects will undergo final evaluation procedures, in 
accordance with the early termination (ET) visit described in Section 11.6.9 and safety follow-up 
visit as described in Section 11.6.10. 

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15.
STATISTICS
15.1. 
Sample Size 
All subjects who complete the 4-week double-blind treatment period of Study SEP361-201 are 
eligible. It is anticipated that approximately 180 subjects will enter this open-label extension 
study. 
15.2. 
Analysis Population 
15.2.1. 
Safety Population 
The safety population will consist of all subjects who receive at least one dose of study drug 
during the 26-week open-label extension period. The safety population will be used for the 
long-term safety, tolerability, and efficacy analyses. 
15.3. 
Data Analysis 
15.3.1. 
Subject Disposition 
Subject disposition will be summarized and presented for the number and percentage of subjects, 
who entered the extension study, received at least one dose of the extension study treatment, and 
completed or discontinued the study (including reasons for discontinuation). 
15.3.2. 
Drug Exposure and Compliance 
Drug exposure and compliance during the open-label extension period will be summarized for 
the safety population.  
Exposure (in days) will be calculated as: last extension study dose date - first extension study 
dose date + 1. Exposure will be summarized both as a continuous variable (i.e. mean days) and 
categorically:  
•
Number and percentage of subjects with extension study drug exposure ≥ 1, ≥ 7, ≥ 14,
≥ 28, ≥ 56, ≥ 84, ≥ 112, ≥ 140, ≥ 168, and ≥ 182 days;
•
Number and percentage of subjects with extension study drug exposure for 1 - 6,
7 - 13, 14 - 27, 28 - 55, 56 - 83, 84 - 111, 112 - 139, 140 - 167, 168 - 181, and
≥ 182 days
Percent compliance will be calculated as: (number of capsules taken / number of capsules should 
have been taken) × 100%. Percent compliance will be calculated by visit and overall for the 
entire open-label extension period, and will be summarized both as a continuous variable (ie, 
mean percentage) and categorically (i.e. number and percentage of subjects in each compliance 
category: non-compliant < 75%, 75% - 125%, non-compliant > 125%, and missing compliance). 
Mean daily dose will be calculated for the entire open-label extension period as the cumulative 
dose (mg) of SEP-363856 divided by the duration of exposure (in days), where cumulative dose 
is the sum of all doses a subject received during the open-label extension period. Modal daily 

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dose will be determined as the daily dose that is taken for the most time (in terms of number of 
days) among all doses taken. Both mean daily dose and modal daily dose will be summarized. 
15.3.3. 
Important Protocol Deviations 
Important protocol deviations (IPDs) will be identified and documented based on a review of 
potentially IPDs. The potentially IPDs will be identified through programmatic checks of study 
data, as well as through review of selected data listings. The potentially IPDs to be reviewed 
include, but are not limited to, subjects who: 
•
Did not meet inclusion/exclusion criteria for the open-label extension study.
•
Received any disallowed concomitant medication during the open-label extension
period.
Individual IPDs will be presented in a data listing. The number and percentage of subjects with 
IPDs will be summarized for the safety population by the type of deviation. 
15.3.4. 
Demographic and Baseline Characteristics 
Demographic and baseline characteristics data will be summarized for the safety population. 
Selected data (e.g. PANSS total score, CGI-S score, etc.) will be summarized at both the 
double-blind (DB) baseline of study SEP361-201 and the open-label (OL) baseline of 
study SEP361-202. 
Medical history will be coded using the Medical Dictionary for Regulatory Activities (MedDRA) 
version 18.1 or higher, and will be summarized for the safety population by presenting the 
number and percentage of subjects with at least one condition in each system organ class (SOC) 
and preferred term (PT). 
15.3.5. 
Efficacy Analyses 
Efficacy data will be summarized descriptively for the safety population. 
The absolute values of PANSS total score and subscale scores (positive, negative, and general 
psychopathology), CGI-S score, BNSS total score, and MADRS total score at both the DB 
baseline of study SEP361-201 and OL baseline of study SEP361-202, and at each scheduled 
post-baseline extension visit, will be summarized descriptively. 
Changes from baseline in the above efficacy measures will be summarized at each scheduled 
post-baseline extension visit, based on both the DB baseline of study SEP361-201 and the OL 
baseline of study SEP361-202. 
PANSS total score and CGI-S score data will also be separately summarized by age group, 
gender, race, and geographic region (i.e. US sites vs. non-US sites). Additional subgroup factors 
and details of the subgroup analysis will be provided in SAP. 
The proportion of subjects who achieve a response, defined as a 20% or greater improvement (i.e. 
decrease) in PANSS total score from the baseline at the end of the 26-week open-label extension 
period, will be calculated based on: (1) the DB baseline of study SEP361-201 for subjects 
assigned to double-blind SEP-363856, and (2) the OL baseline of study SEP361-202 for subjects 

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assigned to double-blind placebo. For subjects who discontinue early, the PANSS total score 
measured at the early termination visit will be used. 
The CBB composite score at the DB baseline of study SEP361-201 and OL baseline of study 
SEP361-202 will be calculated. The composite score based on the four domains contained in the 
CBB scale (i.e. attention, information processing, visual learning, and working memory) will be 
calculated from the CSB assessment result at Visit 7E (Week 12) and Visit 11E (Week 26) of 
study SEP361-202. The composite score of CSB at Visits 7E and 11E will also be calculated.  
The absolute values of CBB composite score at the DB baseline of study SEP361-201 and the 
OL baseline of study SEP361-202, and the four-domain composite score at each scheduled 
post-baseline extension visit, will be summarized descriptively. Changes from baseline in 
four-domain composite score will be summarized at each scheduled post-baseline extension visit, 
based on both the DB baseline of study SEP361-201 and the OL baseline of study SEP361-202. 
In addition, the absolute values of CSB composite score at Visits 7E and 11E of study 
SEP361-202 will be summarized. Change from Visit 7E in CSB composite score at Visit 11E 
will also be summarized. 
The absolute values of UPSA-B total score at the OL baseline of study SEP361-202, and at each 
scheduled post-baseline extension visit, will be summarized descriptively. Changes from the OL 
baseline in UPSA-B total score will be summarized at each scheduled post-baseline extension 
visit. 
15.3.6. 
Safety Analyses 
15.3.6.1. Adverse Events 
All AEs will be coded using Medical Dictionary for Regulatory Activities (MedDRA) 
version 18.1 or higher. AEs are untoward medical occurrences: 
•
that occurred on or after the first dose of study drug,
•
with a missing start date and a stop date on or after the first dose of study drug, or
•
with both a missing start and stop date.
For the present study the summary of AEs will be limited to those that occurred on or after the 
first dose (of the 26-week open-label extension period) of the study drug. 
AEs will be summarized by MedDRA system organ class (SOC) and Preferred Term (PT). 
The following AEs will be summarized and presented by MedDRA SOC and PT for the Safety 
population: 
•
All AEs (including number of events and subject incidence).
•
AEs by severity (mild, moderate, severe).
•
AEs by relationship to the study treatment (related, or not related).
The following conventions will be followed in summarizing AEs: 
•
For subject incidence summaries, each subject will be counted only once within each
SOC and within each preferred term.

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•
If a subject reports more than one AE within a preferred term and/or a body system,
the AE with the highest known severity within each body system and within each
preferred term will be included in the summaries by severity.
•
For summaries by relationship to the study drug, AEs will be grouped as “related” or
“not related.” AEs assessed as “possible,” “probable,” or “definite,” will be grouped
as “related.” If a subject reports more than one AE within the same treatment
regimen, SOC and PT, and any are related, it will be summarized as related.
Summaries of SAEs and AEs leading to discontinuation will also be provided. A listing of AEs, 
as well as a listing of deaths, SAEs, or AEs leading to discontinuation, will be presented. 
15.3.6.2. Clinical Laboratory Assessments 
Clinical laboratory parameters will be summarized by presenting shift tables, and by presenting 
summary statistics for the absolute values as well as the change from Baseline values. Both the 
DB baseline of study SEP361-201 and the OL baseline of study SEP361-202 will be used in the 
calculation of change values. For laboratory parameters with categorical outcomes, the number 
and percentage of subjects with each outcome will be presented. The data listings will flag values 
outside the reference range. 
15.3.6.3. ECGs 
Absolute values and changes from Baseline in ECG parameters will be summarized. In addition, 
the number and percentage of subjects with elevated QTc intervals (> 450 msec, > 480 msec, and 
> 500 msec) and changes from baseline in QTc intervals ≥ 30 msec and ≥ 60 msec will be 
summarized. Fridericia’s correction (QTcF) and Bazett’s correction (QTcB) will be used for QT 
interval correction. Both the DB baseline of study SEP361-201 and the OL baseline of study 
SEP361-202 will be used in the calculation of change values. 
15.3.6.4. Vital Signs 
Vital sign parameters, as well as weight and BMI, will be summarized by presenting summary 
statistics for the absolute values and the change from Baseline values. Both the DB baseline of 
study SEP361-201 and the OL baseline of study SEP361-202 will be used in the calculation of 
change values. 
15.3.6.5. Physical/Neurological Examination 
All physical and neurological exam findings at the screening visit of study SEP361-201 will be 
recorded as medical history events. Clinically significant findings at the extension visits will be 
captured as AEs as appropriate and summarized together with the other AEs. 
15.3.6.6. Concomitant Medications 
All medications will be coded to indication-specific ATC (Anatomical Therapeutic Chemical) 
classification (i.e. ATC level 3) and preferred name using the World Health Organization Drug 
Dictionary (WHO-DD). 
Any medications taken during the course of the open-label extension study, with a start date on 
or after the date of the first dose of extension study drug and on or before the date of the last dose 

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of extension study drug; or with a start date prior to, and an end date on or after, the date of the 
first dose of extension study drug, or marked as ongoing, will be considered concomitant 
medications. Medications that ended prior to the date of the first dose of extension study drug 
will be considered prior medications. Medications that started after the date of the last dose of 
study drug will not be considered concomitant, but will be considered post-treatment. Prior and 
Concomitant medications will be summarized for the number and percentage of subjects using 
each medication and by the drug class and preferred name for the safety population. 
15.3.6.7. Suicidality Measure 
Frequency and severity of suicidal ideation and suicidal behavior as measured by the C-SSRS 
scale will be summarized for each visit. 
15.3.6.8. Rate of Relapse and Time to Relapse 
The relapse will be assessed in subjects who demonstrated clinical response to 4 weeks of 
treatment with SEP-363856. Clinical response is defined as meeting both of the following 
criteria: 
1) a decrease in PANSS total score of ≥ 20% from baseline, and
2) a CGI-S score ≤ 4.
For subjects assigned to double-blind SEP-363856, clinical response will be evaluated using the 
Day 29 data of study SEP361-201, against the DB baseline of study SEP361-201. For subjects 
assigned to double-blind placebo, clinical response will be evaluated using the Day 29 data of 
study SEP361-202, against the OL baseline of study SEP361-202. 
Relapse will be identified programmatically using the pre-defined criteria (Section 6.2) among 
subjects who demonstrated a clinical response to 4 weeks of treatment with SEP-363856. The 
rate of relapse will be calculated as the proportion of subjects with a relapse in the 26-week 
open-label extension period out of all subjects who demonstrated clinical response, along with 
the 95% confidence interval. The time-to-relapse will be summarized descriptively and will also 
be presented by a Kaplan-Meier plot. 
15.3.6.9. Movement Disorder Measures 
Movement disorder measures include AIMS, BARS, and SAS. The absolute values of AIMS, 
BARS, and SAS total scores at both the DB baseline of study SEP361-201 and OL baseline of 
study SEP361-202, and at each scheduled post-baseline extension visit, will be summarized for 
the safety population. Changes from baseline in these measures will also be summarized for each 
scheduled post-baseline extension visit, using both the DB baseline of study SEP361-201 and OL 
baseline of study SEP361-202 to calculate the change values. 
15.3.6.10. Drug Effects Questionnaire 
Data from the DEQ questionnaire will be summarized for the safety population at each visit. 
15.3.6.11. Pittsburgh Sleep Quality Index 
Absolute PSQI global score at both the DB baseline of study SEP361-201 and OL baseline of 
study SEP361-202, and at each scheduled post-baseline extension visit, will be summarized for 

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the safety population. Change from baseline in PSQI global score will also be summarized for 
each scheduled post-baseline extension visit, based on both the DB baseline of study 
SEP361-201 and the OL baseline of study SEP361-202. 
15.3.6.12. Subgroup Analysis 
Selected safety data will be presented by age group, gender, race, and geographic region/country. 
Additional subgroup factors and details of subgroup analysis of the safety data will be provided 
in the SAP. 
15.3.7. 
Pharmacokinetic Analysis 
All concentrations will be presented in data listings. POP PK analysis will be performed using 
plasma SEP-363856 concentrations; the results of which will be reported separately. 
15.3.8. 
Pharmacodynamic Analysis 
The relationship between PANSS total score and plasma SEP-363856 exposure using population 
PK/pharmacodynamics (PD) methods will be explored, the results of which will be reported 
separately. 
15.3.9. 
Interim Analysis 
No interim analysis is planned. 
15.3.10. 
Treatment of Missing Data 
For rating scales with more than one item, such as PANSS and MADRS, if any item score 
contributing to the total/subscale score is missing, then the total/subscale score will be set to 
missing. 
In this study, missing data will not be imputed. All analyses will be based on the observed data. 
15.3.11. 
Sensitivity Analyses 
No sensitivity analysis will be performed. 

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16.
PROCEDURE FOR CLINICAL STUDY QUALITY CONTROL
/DATA COLLECTION, MANAGEMENT, AND QUALITY
ASSURANCE
16.1. 
Data Collection/Electronic Data Capture (EDC) 
The results from data collected during the study (except clinical laboratory test results) will be 
recorded in the subject’s electronic CRF. Data will be entered into source documents prior to 
being transcribed into the CRF. This transcribing will be done once a subject has been enrolled at 
baseline (Visit 1E). Data for screen failures will not be collected. The study centers will use an 
EDC system that is compliant with relevant FDA regulatory requirements per 21 code of federal 
regulations (CFR) Part 11. Password protected access to the EDC system will be via a secure 
website. Data queries and data corrections will be handled through the same system. All 
transactions within the EDC system are fully documented within an electronic audit trail. Each 
set of completed CRFs must be reviewed and electronically signed and dated by the Investigator 
or delegate. 
16.2. 
Computerized Systems Used for Source Data 
A list of the computerized systems that will be used to create, modify, maintain, archive, retrieve, 
or transmit source data are presented below, pursuant to the Guidance for Industry Computerized 
Systems Used in Clinical Investigations, May 2007. 
Protocol Step 
Computerized System Type or 
Description 
Obtain informed consent 
A 
Review inclusion/exclusion criteria 
A 
Demographics 
A 
Prior/concomitant medication review 
A 
Dispense study drug 
A, E 
Study drug accountability 
A 
Physical examination 
A 
Vital sign measurements 
A 
Weight 
A 
Waist circumference 
A 
Electrocardiogram (ECG) 
C 
Hematology, chemistry, and urinalysis 
B 
Serum prolactin 
B 
Glycosylated hemoglobin (HbA1c) 
B 
Glucose and Lipid panel 
B 
Serum human chorionic gonadotropin (β-hCG) 
B 
Blood sample for SEP-363856 PK 
D 
Urine drug screen 
B 
Urine β-hCG (local) 
A 

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Protocol Step 
Computerized System Type or 
Description 
Urine drug screen (central) 
B 
Positive and Negative Syndrome Scale (PANSS) – Total 
Score 
F 
Clinical Global Impression – Severity (CGI-S) 
F 
Montgomery-Asberg Depression Rating Scale (MADRS) 
F 
Columbia Suicide Severity Rating Scale (C-SSRS) 
F 
Drug Effects Questionnaire (DEQ) 
A 
Abnormal Involuntary Movement Scale (AIMS) 
F 
Barnes Akathisia Rating Scale (BARS) 
F 
Simpson-Angus Scale (SAS) 
F 
Brief Negative Symptoms Scale (BNSS) 
F 
Pittsburg Sleep Quality Index (PSQI) 
F 
CogState Brief Battery (CBB) 
G 
CogState Schizophrenia Battery (CSB) 
G 
USPA-B 
A 
Adverse events (AE) monitoring 
A 
Statistical analysis 
SAS®, version 9.2 or higher 
A = EDC (MediData RAVE); B = LIMS; C = Core Lab Over-read; D = LIMS/ASCII; E = IXRS F = Bracket; 
G = CogState.  
Abbreviations: EDC = electronic data capture; CDR = clinical data repository; CIMS = Clinical Inventory 
Management System; IXRS = interactive response technology; IVRS = interactive voice recognition system; 
LIMS = laboratory information management system. 
16.3. 
Study Monitoring 
This study will be monitored from initiation to completion by the Sponsor or its representative. 
Monitoring will include personal visits and telephone communication to assure that the 
investigation is conducted according to protocol and in order to comply with ICH GCP. On-site 
review of CRFs will include a review of forms for completeness and clarity, and consistency 
with source documents available for each subject. 
16.4. 
Audits 
The study may be subject to audit by the Sponsor/designee. If such an audit occurs, the 
Investigator must agree to allow access to required subject records. This is dependent on the 
subject granting consent by signing the ICF. By signing this protocol, the Investigator grants 
permission to personnel from the Sponsor or its representatives for on-site monitoring and 
auditing of all appropriate study documentation, as well as on-site review of the procedures 
employed in CRF generation, where clinically appropriate. 
In accordance with ICH GCP the Sponsor may select this study for audit. During the audit the 
Sponsor representative will carry out an inspection of centre facilities (eg, pharmacy, drug 
storage areas, laboratory) and review study related records in order to evaluate the study 
compliance with the Sponsor/centre SOPs, protocol, ICH GCP and local regulations. The 
Investigator or appropriate designee must also agree to inspection of all study documents by the 

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regulatory authorities and the IEC. Should the Investigator or appropriate designee be notified of 
a regulatory inspection involving this study they should notify the Sponsor immediately. 
16.5. 
Study Documentation 
Study records are comprised of source documents, CRFs, and all other administrative 
documents, eg, IRB/IEC correspondence, clinical study materials and supplies shipment 
manifests, monitoring logs, Sponsor and CRO correspondence, etc. A study specific binder will 
be provided with instructions for the maintenance of study records. 
Source document is defined as any hand written or computer generated document that contains 
medical information or test results that have been collected for or are in support of the protocol 
specifications, eg, clinical laboratory reports, clinic notes, drug disbursement log, subject sign in 
sheets, subject completed questionnaires if applicable, telephone logs, ECGs, etc. All draft, 
preliminary and pre-final iterations of a final report are also considered to be source documents, 
eg, faxed laboratory reports and hard copy laboratory reports, faxed initial results and hard copy, 
final report. 
16.6. 
Clinical Laboratory Certification and Normal Values 
A central laboratory will be used for analysis for most of the clinical laboratory tests for this 
study. The central laboratory will provide the Investigator, Sponsor/CRO with laboratory 
certification(s), a dated copy of normal range values for the central clinical laboratory selected to 
analyze clinical specimens. If an exception is granted to use a local laboratory, the Investigator 
must supply the Sponsor/CRO with laboratory certification, lab director’s curricula vitae and a 
current, dated copy of normal range values. 
A local laboratory may optionally be used for analysis of serum pregnancy at Visit 2 in this 
study. The local laboratory/site personnel will provide Sponsor/P1vital with laboratory 
certification(s) and a current dated copy of normal range values for the local clinical laboratory 
selected to analyse clinical specimens. 

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17.
ETHICAL AND REGULATORY OBLIGATIONS
17.1. 
Study Conduct 
The Investigator agrees that the study will be conducted according to the protocol, ICH Good 
Clinical Practice (GCP), ICH guidelines and the ethical principles that have their origin in the 
Declaration of Helsinki. The Investigator will conduct all aspects of the study in accordance with 
applicable local law(s) and regulation(s). 
The Investigator will assure proper implementation and conduct of the study including those 
study-related duties delegated to other appropriately qualified individuals. The Investigator will 
assure that study staff cooperate with monitoring and audits. 
The Investigator must sign and return to Sponsor/CRO the “Investigator Approval" page. 
17.2. 
Institutional Review Board/Independent Ethics Committee 
Documented approval for conducting the study from appropriate Institutional Review Board 
(IRB)/Independent Ethics Committee (IEC) will be obtained for all participating study centers 
prior to initiation of the study, according to ICH GCP, applicable local law(s) and regulation(s). 
When necessary, an extension, amendment or renewal of the IRB/IEC approval must be obtained 
and also forwarded to the Sponsor. The IRB/IEC must supply the Sponsor a list of the IRB/IEC 
membership, and a statement to confirm that the IRB/IEC is organized and operates according to 
ICH GCP, applicable law(s) and regulation(s). 
A copy of written IRB/IEC approval or favorable opinion of the protocol, informed consent form 
and subject recruitment material (if applicable) must be provided to Sponsor/CRO prior to start 
of the study. The approval or favorable opinion letter must be signed by the IRB/IEC chairman 
or designee identify the IRB/IEC name and address, identify the clinical protocol by title and/or 
protocol number, and include the date that approval or favorable opinion was granted. The letter 
must also contain a statement that the IRB/IEC complies with the requirements in 21 CFR 
Part 56 for a study conducted under a US investigation new drug (IND) or ICH GCP, as 
applicable. 
The Investigator/CRO is responsible for obtaining from the IRB/IEC continued review of the 
clinical research or submitting periodic progress reports, in accordance with applicable 
regulations, at intervals not to exceed one year and (if applicable) as otherwise additionally 
specified by the IRB/IEC. The Sponsor must be supplied with written documentation of 
continued review of the clinical research. 
The Investigator must promptly inform their IRB/IEC of all SAEs reported by subjects enrolled 
in the study or other safety information reported from Sponsor/CRO in accordance with 
applicable law(s) and regulation(s). 
17.3. 
Informed Consent 
The informed consent form will be approved by the Sponsor/CRO prior to submission to the 
IRB/IEC. All informed consent forms must contain the minimum elements as mandated by ICH 

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GCP, applicable local law(s) and regulations and will be subject to Sponsor/CRO approval as 
well as IRB/IEC approval. 
Before recruitment and enrollment, each prospective subject will be given a full explanation of 
the study, allowed to read the approved informed consent form and be provided ample time and 
the opportunity to ask any questions that may arise. Once all questions have been answered and 
the Investigator is assured that the prospective subject understands the implications of 
participating in the study, the prospective subject will be asked to give consent to participate in 
the study by signing the informed consent form. As part of the consent process, each prospective 
subject must consent to direct access to his/her medical records for study-related monitoring, 
auditing, IRB/IEC review, and regulatory inspection. It should be clearly explained to each 
prospective subject that participation in each and every clinical visit and assessment is expected. 
The subject may be discontinued from study drug, but that does not necessarily negate the 
expectation that the subject will continue to participate in the study through the final 
visit/assessment. The Investigator will provide a copy of the signed informed consent form to 
each subject, and will record the date of the informed consent on the CRF. 
If an amendment to the protocol changes the subject participation schedule in scope or activity, 
or if important new information becomes available that may be relevant to the subject’s consent, 
the informed consent form must be revised, submitted to the IRB/IEC for review and approval or 
favorable opinion. The revised informed consent form must be used to obtain consent from a 
subject currently enrolled in the study if he or she is affected by the amendment. The revised 
informed consent form must be used to obtain consent from any new subjects who are enrolled 
into the study after the date of the approval or favorable opinion of the protocol amendment. 
17.4. 
Subject Privacy 
The Sponsor (or Sponsor representative) or any designees affirm uphold the subjects 
confidentiality. The subject will be identified by unique code only; full names will be masked 
prior to transmission to the Sponsor. The confidentiality of the subject’s personal data shall be 
protected in accordance with appropriate laws and regulations. 
If any cases are identified where the subject’s confidentiality has been breached, this must be 
rectified immediately. All subject identifiable information should be removed and the Sponsor 
notified. 
17.5. 
Protocol Amendments and Emergency Deviations 
All revisions and/or amendments to this protocol must be approved in writing by the Sponsor 
and the appropriate IRB/IEC. The Investigator will not make any changes to the conduct of the 
study or the protocol without first obtaining written approval from the Sponsor and the IRB/IEC, 
except where necessary to eliminate an apparent immediate hazard to a study subject. 
Emergency deviations or modifications may be initiated without Sponsor or IRB/IEC approval or 
favorable opinion, only in cases where the deviation or modification is necessary to eliminate or 
avoid an immediate apparent hazard to subjects. Emergency deviations or modifications must be 
reported to the Sponsor/CRO and the IRB/IEC immediately/within five business days of the 
occurrence, or in accordance with applicable regulatory requirements. 

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17.6. 
Records Retention 
The Investigator/the study center must arrange for retention of study records at the study center 
for at least 25 years from time of participation in the study or longer in accordance with 
applicable regulations and Sponsor SOPs. The Investigator/site should take measures to prevent 
accidental or premature destruction of these documents. Documents cannot be destroyed without 
written Sponsor authorization. The Sponsor will inform the Investigator/the study center when 
the destruction of documents is permitted. 
17.7. 
Inspection of Records 
In the event of an inspection, the Investigator agrees to allow representatives of the Sponsor and 
its representative and, the regulatory authorities’ access to all study records. The Investigator will 
promptly notify the Sponsor/CRO of all requests to inspect a Sunovion-sponsored study by 
government agencies and will promptly forward a copy of all such inspection reports. 
17.8. 
Publication Policy 
Any formal presentation or publication of data collected as a direct or indirect result of the study 
will be considered a joint publication by the Investigators and the appropriate personnel of the 
Sponsor. For multicenter studies, it is mandatory that the first publication is based on all data 
obtained from all analyses as stipulated in the protocol. Investigators participating in multicenter 
studies must agree not to present data gathered individually or by a subgroup of centers before 
the full, initial publication, unless this has been agreed to by all other Investigators and by the 
Sponsor. 
The Sponsor will disclose the study results, in the form of a clinical study report synopsis, to the 
IEC and the applicable regulatory authorities within one year of the end of the study. The format 
of this synopsis and that of the clinical study report should comply with ICH E3 guidelines for 
structure and content of a clinical study report. 
Investigators participating in multicenter studies must agree not to present data gathered 
individually or by a subgroup of centers before the full, initial publication, unless this has been 
agreed to by all other Investigators and by the Sponsor. 

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18.
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relapse and the predictors of relapse in the treatment of schizophrenia. BMC 
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Barnes TRE. The Barnes Akathisia Rating Scale – Revisited. J Psychopharmacology 2003; 
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Buysse, Daniel J.; Reynolds, Charles F.; Monk, Timothy H.; Berman, Susan R.; Kupfer, David J. 
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research". Psychiatry Research 28 (2): 193–213. .doi:10.1016/0165-1781(89)90047-4 
Davis JM, Chen N. Dose response and dose equivalence of antipsychotics. J Clin 
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Guy W. EDCEU Assessment Manual for Psychopharmacology – Revised (DHEW Publ No 
ADM 76-338). Rockville, MD, U.S. Department of Health, Education, and Welfare, Public 
Health Service, Alcohol, Drug Abuse, and Mental Health Administration, NIMH 
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537. 
Kay SR, Opler LA, Fisbein A. Positive and Negative Syndrome Scale Manual. North 
Tonawanda, NY: Multi-Health Systems, 1994. 
Kapur S, Remington G. Atypical antipsychotics: new directions and new challenges in the 
treatment of schizophrenia. Annu Rev Med 2001;52:503-517. 
Keefe RSE, Bilder RM, Harvey PD, Davis SM, Palmer BW, Gold JM, et al. Baseline 
neurocognitive deficits in the CATIE schizophrenia trial. Neuropsychopharmacology. 
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Kim DH, Maneen MJ, Stahl SM. Building a better antipsychotic: receptor targets for the 
treatment of multiple symptom dimensions of schizophrenia. Neurotherapeutics. 2009;6:78-85. 
Kirkpatrick B, Strauss GP, Nguyen L, et al. The Brief Negative Symptom Scale: Psychometric 
Properties. Schizophrenia Bulletin. 2011;37(2):300-305. doi:10.1093/schbul/sbq059. 
Kreyenbuhl J, Buchanan RW, Dickerson FB, Dixon LB. The Schizophrenia Patient Outcomes 
Research Team (PORT): updated treatment recommendations 2009. Schizophr Bull. 
2010;36:94-103. 
Kuroki T, Nagao N, Nakahara T. Neuropharmacology of second-generation antipsychotic drugs: 
a validity of the serotonin-dopamine hypothesis. Prog Brain Res. 2008;172:199-212. 
Lehman AF, Lieberman JA, Dixon LB, et al. Practice guideline for the treatment of patients with 
schizophrenia, second edition. Am J Psychiatry. 2004;161(suppl 2):1-56. 

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Leucht S, Corves C, Arbter D, Engel RR, Li C, Davis JM. Second-generation versus first-
generation antipsychotic drugs for schizophrenia: a meta-analysis. Lancet. 2009;373:31-41. 
Lieberman JA, Stroup TS, McEvoy JP, Swartz MS, Rosenheck RA, Perkins DO, et al. 
Effectiveness of antipsychotic drugs in patients with chronic schizophrenia. N Engl J 
Med. 2005;353:1209-1223. 
Mausbach BT, Harvey PD, Goldman SR, Jeste DV, Patterson TL. Development of a brief scale 
of everyday functioning in persons with serious mental illness. Schizophr Bull. 2007;33:1364–
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Meltzer HY, Cucchiaro J, Silva R, Ogasa M, Philips D, Xu, J, Kalali, AH, Schweizer E, Pikalov 
A, Loebel A. Lurasidone in the treatment of schizophrenia: a randomized, double-blind, 
placebo-and olanzapine-controlled study. Am J Psychiatry. 2011;168:957-967. 
Minzenberg, et al. Chapter 10: Schizophrenia. In: Hales RE, Yudofsky SC, Gabbard GO, eds. 
The American Psychiatric Publishing Textbook of Psychiatry. 5th edition. Arlington, VA: 
American Psychiatric Publishing, Inc; 2008. 
Morken G, Widen JH, Grawe RW. Non-adherence to antipsychotic medication, relapse and 
rehospitalization in recent-onset schizophrenia. BMC Psychiatry. 2008;8:32-37. 
Munetz MR, Benjamin S. How to examine subjects using the Abnormal Involuntary Movement 
Scale. Hospital and Community Psychiatry 1988; 39: 1172-1177. 
Munro J, Osborne S, Dearden L, Pascoe K, Gauthier A, Price M. Hospital treatment and 
management in relapse of schizophrenia in the UK: associated costs. The Psychiatrist. 
2011;35:95-100. 
Naber D, Lambert M. The CATIE and CUtLASS studies in schizophrenia: results and 
implications for clinicians. CNS Drugs. 2009;23:649-659. 
Nakamura M, Ogasa M, Guarino J, Phillips D, Severs J, Cucchiaro J, Loebel A. Lurasidone in 
the treatment of acute schizophrenia: a double-blind, placebo-controlled trial. J Clin Psychiatry. 
2009;70:829-836. 
Narrow WE, Rae DS, Robins LN, Regier DA. Revised prevalence estimates of mental disorders 
in the United States: using a clinical significance criterion to reconcile 2 surveys' estimates. Arch 
Gen Psychiatry. 2002;59:115-123. 
National Institute of Mental Health (NIMH). Schizophrenia. 
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Accessed October 20, 2010. 
Newcomer JW. Antipsychotic medications: metabolic and cardiovascular risk. J Clin Psychiatry. 
2007;68 (suppl 4):8-13. 
Opler LA, Kay SSR, Lindenmayer JP, Fiszbein A. Structured Clinical Interview for the Positive 
and Negative Syndrome Scale (SCI-PANSS). Toronto: Multi-Health Systems, 1992. 
Patel KH, Hlavinka PF. Schizophrenia: Optimal therapy with second-generation antipsychotic 
agents. Pharmacy Today. 2007;13:71-84. 
Pearlson GD. Neurobiology of schizophrenia. Ann Neurol. 2000;48:556-566. 

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Perkins DO, Stroup TS, Lieberman JA. Psychotic disorders measures. In Handbook of 
Psychiatric Measures. Washington, D.C.: American Psychiatric Association, 2000 p. 485-513.  
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Schultz SK, Andreasen NC. Schizophrenia. Lancet. 1999;353:1425-1430. 
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Webber MA, Marder SR. Better pharmacotherapy for schizophrenia: what does the future hold? 
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19. 
INVESTIGATOR APPROVAL 
I have read the protocol, SEP361-202, Version 4.00 “A 26-Week Open-label Safety and 
Tolerability Extension Study of SEP-363856 in Adult Subjects with Schizophrenia”, and agree 
that it contains all necessary details for conducting the study and to conduct the study in strict 
accordance with the specifications outlined herein. 
I agree that no additional procedure(s) will be added during the conduct of the study except 
through protocol amendment by Sunovion Pharmaceuticals Inc. and after documentation of IRB 
approval. 
Investigator Signature: ____________________________________________________ 
 
Print Investigator Name: __________________________________________________ 
 
Date: ___________________________________________ 

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20. 
APPENDIX I. CARDIAC SAFETY MONITORING (ECG) 
1. Requirements for Testing 
Electrocardiogram (ECG) equipment and supplies will be provided by the centralized cardiac 
safety vendor and should be used for all in-clinic protocol ECG assessments.  
• All 12-lead ECGs will be recorded in the same manner. 
• The study center personnel must be adequately trained in performing ECGs on the 
specific ECG equipment used in this protocol that is provided by the cardiac safety 
vendor. 
• To the extent possible, the same ECG machine and personnel should be used to 
acquire a subject’s ECGs throughout the period of their participation in the study. 
• ECGs will be recorded with at least one 10-second single-lead tracing recorded from 
Lead II. 
2. Subject Restrictions and Instructions 
• Prior to ECG acquisition, the subject will have rested 10 minutes in the supine 
position and will remain so until the ECG is obtained. 
3. Reporting 
• It is the responsibility of the Investigator to perform a safety review of the ECG data 
for changes from previous assessments and/or emergent cardiac dysfunction, and to 
determine subjects’ eligibility or continuance in the study. 
• ECGs will be reviewed, signed and dated by the Investigator listed on the Form 
FDA 1572 (MD or DO) after each ECG collection. The same Investigator should 
review all ECG reports for a given subject whenever possible. 
• For all ECGs, a report will be provided by the cardiac safety vendor to the study 
center for review and signature. 
• The ECG tracing will be kept with subject’s source documentation and / or CRF 
unless it is specified otherwise. The original ECG and the cardiologist’s over-read 
will be retained at the study center. 
4. Data Standardization 
ECG data will be transmitted to a centralized cardiac safety vendor and centrally over-read 
and interpreted using standardized procedures. 
 

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21. 
APPENDIX II. HIGHLY EFFECTIVE CONTRACEPTIVE 
PROCEDURES FOR AND DURING THE STUDY 
For female subjects 
Female subject of reproductive potential agrees to remain abstinent or use highly effective 
and reliable contraception throughout the study and for at least 30 days after the last dose of 
study drug has been taken. In the Investigator's judgment, the subject will adhere to this 
requirement. 
a. Highly effective contraception is defined as continuous use of either two barrier 
methods (eg, condom and spermicide or diaphragm with spermicide) or a hormonal 
contraceptive. Highly effective hormonal contraceptives include the following:  
i) 
contraceptive implant (such as Norplant®) implanted at least 90 days prior to 
screening;  
ii) 
injectable contraception (such as medroxyprogesterone acetate injection) given 
at least 14 days prior to screening; or  
iii) 
 oral contraception taken as directed for at least 30 days prior to screening. 
b. Subjects who are of non-reproductive potential, ie, subject who is surgically sterile, 
has undergone tubal ligation, or is postmenopausal (defined as at least 12 months of 
spontaneous amenorrhea or between 6 and 12 months of spontaneous amenorrhea 
with follicle stimulating hormone (FSH) concentrations within postmenopausal range 
as determined by laboratory analysis based on study SEP361-201) are not required to 
remain abstinent or use highly effective contraception. 
For Male Subjects 
Male subjects with female partner(s) of childbearing potential must agree to avoid fathering a 
child and use highly effective methods of birth control from screening until at least 30 days 
after the last study drug administration. Male subjects must be surgically sterile or willing to 
use an effective method of double-barrier birth control as outlined for female subjects above. 

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22. 
APPENDIX III. CLINICAL LABORATORY TESTS 
Detailed instructions will be provided in a study center manual. 
The following clinical laboratory tests are to be performed:  
 
Clinical Safety Panel 
 
HEMATOLOGY: (Differential reported as % and absolute value) 
Hemoglobin, Hematocrit, Platelet Count, RBC Count, WBC - Total Count, WBC Differential, 
(Basophils, Eosinophils, Lymphocytes, Monocytes, Neutrophils) 
 
BLOOD CHEMISTRIES: Alanine aminotransferase (ALT), Albumin, Alkaline Phosphatase 
(ALP), Aspartate aminotransferase (AST), Bicarbonate (HCO3), Bilirubin (Total, Direct, 
Indirect), Blood Urea Nitrogen (BUN), Calcium (Ca), Chloride (Cl), Creatinine, Creatine 
phosphokinase (CPK), Glucose, Hemoglobin A1c (HbA1c), Magnesium (Mg), Phosphorus (P), 
Potassium (K), Prolactin, Protein (Total), Sodium (Na), Uric Acid 
 
URINALYSIS: Blood, Glucose, Ketones, Leukocyte esterase, Microscopic examination, 
Nitrites, pH, Protein 
 
LIPID PANEL: LDL-Cholesterol, HDL-Cholesterol, Triglycerides 
 
THYROID PANEL: Free T3, Free T4, Thyroid stimulating hormone (TSH) 
 
URINE DRUG SCREENING: Amphetamines, Barbiturates, Benzodiazepines, Cannabinoids, 
Cocaine, Methamphetamines, Methadone, Methylenedioxymethamphetamine (MDMA), 
Phencyclidine (PCP), Opiates, Oxycodone 
 
OTHER TESTS: Serum Pregnancy (β-HcG) (in female subjects only), Urine Pregnancy Test 
(in female subjects only), Glycosylated hemoglobin (HbA1c) 
 
Laboratory reports will be initialed and dated on all pages by the Investigator listed on the Form 
FDA 1572 (MD or DO). Laboratory test results will be reviewed by the Investigator as they 
become available. The Investigator must determine the clinical significance of all out-of-range 
lab values (except drug screens). Possibly drug-related or clinically relevant abnormal values of 
uncertain causality must be repeated. Any abnormal values that persist should be followed at the 
discretion of the Investigator. 

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23. 
APPENDIX IV. PHARMACOKINETIC SAMPLING AND 
SAMPLE HANDLING GUIDELINE  
 
Please refer to the Laboratory Investigator Manual for all collection and shipping instructions. 
 
When blood sample for PK assessment and clinical lab sample collections share the same 
designated time points (including predose sample), the blood samples should be collected during 
the same venipuncture. 
For each defined PK sampling time point, collect 6 mL blood sample into a K2-EDTA treated 
tube. Invert gently 8 to 10 times. Keep the blood collection tube on wet ice, and centrifuge for 
20 minutes at ca. x 1300 g to isolate plasma within 30 minutes of blood draw. To ensure a more 
homogenous sample, all plasma samples should first be transferred to 1 tube, capped and mixed 
well. Split the harvest plasma sample with approximately equal volume into 2 polypropylene 
tubes, and label as Primary and Back-up. Freeze plasma tubes in a freezer at 
approximately -20°C or lower. The date and clock time of blood collection must be recorded. 
Blood must be collected from all subjects at the time points indicated below. 
All samples will be shipped with sufficient dry ice protection. 
 
Study Day 
Collection Time 
Volume Collected 
Visit 2E (Day 8) 
Post-dose (Actual date and time will be recorded) 
6 mL 
Visit 5E (Day 29) 
Post-dose (Actual date and time will be recorded) 
6 mL 
Visit 8E (Day 113) 
Post-dose (Actual date and time will be recorded) 
6 mL 
Visit 11E (Day 183) 
Post-dose (Actual date and time will be recorded) 
6 mL