CClinicalTrials.gg
TerminatedNCT04109950Updated Dec 16, 2024

A Clinical Study to Evaluate the Long-term Safety and Tolerability of an Investigational Drug in People With Schizophrenia

A Phase 3 interventional study of SEP-363856 in Schizophrenia, sponsored by Otsuka Pharmaceutical Development & Commercialization, Inc.. Terminated at 79 sites in 8 countries. Open to participants aged 13 Years to 65 Years. Per ClinicalTrials.gov, last updated 2024-12-16.

Sponsored by Otsuka Pharmaceutical Development & Commercialization, Inc. · Phase 3, Interventional, and Treatment

Why this study was terminated
Study terminated early, main goals achieved

From the registry’s dates

  • Primary completion was Nov 2023, 2 years 10 months ago, and no results have been posted to the registry; the sponsor requested a delay in submitting them in Nov 2024.
Phase
Phase 3
Study type
Interventional
Enrollment
463
Allocation
Not applicable
Ages
13 Years to 65 Years
Sex
All
01

Study summary

This is a clinical trial to determine the long-term safety and tolerability of an investigational drug in people with schizophrenia. Participants in the study will receive the drug being studied. This study is accepting male and female participants between 13 and 65 years old who have been diagnosed with schizophrenia and have completed Study SEP361-301 (NCT04072354) or Study SEP361-302 (NCT04092686). This study will be conducted in approximately 80 study centers worldwide. The treatment duration for this study is one (1) year.

Read the detailed description

An open-label extension study to assess the safety and tolerability of SEP-363856 in participants with schizophrenia This is an open-label extension study to evaluate long-term safety and tolerability of SEP-363856. This is a 52-week, outpatient, multicenter, flexible-dose, open-label extension study designed to evaluate the long-term safety and tolerability of SEP-363856 (25 to 100 mg/day) for the treatment of participants with schizophrenia who have completed the Treatment Period of one of the two following double-blind studies: Study SEP361-301 (NCT04072354) or Study SEP361-302 (NCT04092686).

Sumitomo Pharma America Inc. was the former Sponsor and conducted this study. Sumitomo was responsible for analysis and clinical study report (CSR) completion. Otsuka took over study after IND was transferred and is concluding activities with registry postings.

02

Conditions studied

  • Schizophrenia

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Keywords

  • schizophrenia
03

In context

Schizophrenia

3,471 studies on the registry are indexed under Schizophrenia; 472 are open to participants now.

This study's enrollment of 463 is above the median of 70 across 2,872 interventional studies indexed under Schizophrenia.

Browse Schizophrenia studies →

Lead sponsor

Otsuka Pharmaceutical Development & Commercialization, Inc. is the lead sponsor of 289 studies on the registry; 18 are open to participants now.

Of its 104 completed or terminated interventional studies of FDA-regulated products, 69 (66%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
13 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Participant (or participants parent/legal guardian for adolescents) must give written informed consent and privacy authorization prior to participation in the study; adolescents must also provide informed assent.
  2. Participant has completed the Treatment Period of Study SEP361-301 or Study SEP361-302.
  3. Participant has not taken any medication other than the study drug and protocol-allowed medications for the purpose of controlling schizophrenia symptoms during Study SEP361-301 or SEP361-302.
  4. Female participant must have a negative urine pregnancy test at the End of Treatment (EOT) Visit of Study SEP361-301 or Study SEP361-302.
  5. Female participants of childbearing potential must agree to 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.
  6. Male participants must agree to avoid fathering a child and use highly effective methods of birth control from screening in Study SEP361-301 or Study SEP361-302, until at least 30 days after the last study drug administration in the present study (SEP361-303).

Exclusion criteria

Exclusion Criteria

  1. Participant answered "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 Columbia Suicide Severity Rating Scale (C-SSRS) assessment at the End of treatment (EO) Visit of Study SEP361-301 or SEP361-302.
  2. Participant has a clinically significant abnormality including physical examination, vital signs, ECG, or laboratory test at the EOT Visit of Study SEP361-301 or SEP361-302 that the investigator in consultation with the medical monitor considers to be inappropriate to allow participation in the study.
  3. Participant has a positive urine drug screen (UDS) at the EOT Visit of Study SEP361-301 or SEP361-302. However, a positive UDS test may not result in exclusion of participants if the Investigator determines that the positive test is as a result of prescription medicine(s). participants may enter this study before the urine drug screen results are received from the central laboratory. However, after receipt and review of the results any participant meeting this exclusion criterion must be discontinued from the study. Retesting of the UDS is allowed once with prior approval from the Medical Monitor with the retest used to determine eligibility
  4. Female participant is pregnant or lactating.
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
463 participants (actual)

Study arms

  • Experimental
    SEP-363856

    SEP-363856 25mg, 50mg, 75mg, 100mg flexibly dosed once daily

    Drug: SEP-363856

Interventions

  • DrugSEP-363856

    SEP-363856 25mg, 50mg, 75mg, 100mg tablet flexibly dosed once daily

06

What researchers measure

Primary outcomes

  1. The incidence of overall Adverse Events (AEs), Serious Adverse Events (AEs), and Adverse Events (AEs) leading to discontinuation

    Time frame: 53 Weeks

07

Study locations

79 sites
  • Research Site
    Little Rock, Arkansas 72211, United States
  • Research Site
    Rogers, Arkansas 72758, United States
  • Research Site
    Anaheim, California 92805, United States
  • Research Site
    Culver City, California 90230, United States
  • Research Site
    Lemon Grove, California 91945, United States
  • Research Site
    Long Beach, California 90806, United States
  • Research Site
    Long Beach, California 90807, United States
  • Research Site
    Montclair, California 91763, United States
  • Research Site
    San Diego, California 92102, United States
  • Research Site
    Sherman Oaks, California 91403, United States
  • Research Site
    Miami Springs, Florida 33166, United States
  • Research Site
    Oakland Park, Florida 33334, United States
  • Research Site
    Atlanta, Georgia 30030, United States
  • Research Site
    Atlanta, Georgia 30318, United States
  • Research Site
    Atlanta, Georgia 30331, United States
  • Research Site
    Decatur, Georgia 30030, United States
  • Research Site
    Lake Charles, Louisiana 70629, United States
  • Research Site
    Gaithersburg, Maryland 20877, United States
  • Research Site
    Flowood, Mississippi 39232, United States
  • Research Site
    Saint Louis, Missouri 63125, United States
  • Research Site
    Marlton, New Jersey 08053, United States
  • Research Site
    New York, New York 10032, United States
  • Research Site
    Dayton, Ohio 45417, United States
  • Research Site
    Austin, Texas 78754, United States
  • Research Site
    Richardson, Texas 75080, United States
  • Research Site
    Burgas, 8000, Bulgaria
  • Research Site
    Kardzhali, 6600, Bulgaria
  • Research Site
    Novi Iskar, 1282, Bulgaria
  • Research Site
    Pazardzhik, 4400, Bulgaria
  • Research Site
    Pleven, 5800, Bulgaria
  • Research Site
    Sofia, 1431, Bulgaria
  • Research Site
    Veliko Tarnovo, 5000, Bulgaria
  • Research Site
    Vratsa, 3000, Bulgaria
  • Research Site
    Barranquilla, 080020, Colombia
  • Research Site
    Bogotá, 111166, Colombia
  • Research Site
    Zagreb, 10090, Croatia
  • Research Site
    Daugavpils, LV-5417, Latvia
  • Research Site
    Riga, LV-1005, Latvia
  • Research Site
    Strenci, LV-4730, Latvia
  • Research Site
    Chelyabinsk, 454087, Russian Federation
  • Research Site
    Leningrad, 188820, Russian Federation
  • Research Site
    Matrosy, 186131, Russian Federation
  • Research Site
    Moscow, 107076, Russian Federation
  • Research Site
    Moscow, 117152, Russian Federation
  • Research Site
    Moscow, 141371, Russian Federation
  • Research Site
    Nizhniy Novgorod, 603155, Russian Federation
  • Research Site
    Saint Petersburg, 188357, Russian Federation
  • Research Site
    Saint Petersburg, 190005, Russian Federation
  • Research Site
    Saint Petersburg, 191167, Russian Federation
  • Research Site
    Saint Petersburg, 192019, Russian Federation
  • Research Site
    Saint Petersburg, 197341, Russian Federation
  • Research Site
    Samara, 443016, Russian Federation
  • Research Site
    Saratov, 410028, Russian Federation
  • Research Site
    Saratov, 410060, Russian Federation
  • Research Site
    Saratov, 413124, Russian Federation
  • Research Site
    St. Petersburg, 192019, Russian Federation
  • Research Site
    Stavropol, 357034, Russian Federation
  • Research Site
    Talagi, 163530, Russian Federation
  • Research Site
    Belgrade, 11000, Serbia
  • Research Site
    Gornja Toponica, 18202, Serbia
  • Research Site
    Kovin, 26220, Serbia
  • Research Site
    Kragujevac, 34000, Serbia
  • Research Site
    Nis, 18000, Serbia
  • Research Site
    Novi Knezevac, 23330, Serbia
  • Research Site
    Novi Sad, 21000, Serbia
  • Research Site
    Vrsac, 26300, Serbia
  • Research Site
    Ivano-Frankivsk, 76011, Ukraine
  • Research Site
    Kharkiv, 61068, Ukraine
  • Research Site
    Kherson, 73488, Ukraine
  • Research Site
    Kyiv, 01030, Ukraine
  • Research Site
    Kyiv, 01133, Ukraine
  • Research Site
    Kyiv, 02192, Ukraine
  • Research Site
    Kyiv, 04080, Ukraine
  • Research Site
    Kyiv, 08631, Ukraine
  • Research Site
    Lviv, 79021, Ukraine
  • Research Site
    Nove, 25491, Ukraine
  • Research Site
    Odesa, 65006, Ukraine
  • Research Site
    Odesa, 67513, Ukraine
  • Research Site
    Vinnytsia, 21005, Ukraine
08

References and documents

Individual participant data

Plan to share: Yes — Anonymized Individual participant data (IPD) that underlie the results of this study will be shared with researchers to achieve aims pre-specified in a methodologically sound research proposal. Small studies with less than 25 participants are excluded from data sharing.

Supporting information: Study protocol, Sap, Icf

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 16, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04109950
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Responsible party
Sponsor
First posted
Oct 1, 2019
Start date
Nov 20, 2019
Primary completion
Nov 9, 2023
Completion
Nov 9, 2023
Last update
Dec 16, 2024

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Dec 2024. You cannot join it, but the record below documents what was studied.

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