SchizophreniaPhase 1NCT05848700
A Clinical Study to Learn if SEP-363856 Has Physical Dependence in Adults With Schizophrenia
A Phase 1 study testing SEP-363856 in people with Schizophrenia, run by Otsuka Pharmaceutical Development & Commercialization, Inc. at 7 sites in United States.
Trial summary
A Clinical Study to learn if SEP-363856 has physical dependence in adults with schizophrenia. This study will be held in approximately 6 study sites in the United States. It will be accepting male and female participants age 18 years to 65 years. Participation will be up to approximately10 weeks. Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Schizophrenia
- What is being tested?
- SEP-363856
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 60 participants
- Where
- 7 sitesUnited States
- Study dates
- 21 Jun 2023to 15 Mar 2024
- Phase
- Phase 1
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Male or female subject between 18 and 65 years of age (inclusive) at the time of informed consent.
- Subject meets Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria for a primary diagnosis of schizophrenia as established by clinical interview (using the DSM-5 as a reference and confirmed using the Structured Clinical Interview for DSM-5, Clinical Trials Version [SCID-CT]).
- Subject must have a Clinical Global Impression-Severity Scale (CGI-S) score ≤ 4 (normal to moderately ill) at Screening and Day 1.
- Subject must have a PANSS total score ≤ 80 at Screening and a score of ≤ 4 on the following PANSS items at Screening: P7 (hostility) and G8 (uncooperativeness).
- Subject has been taking an antipsychotic for at least 6 weeks prior to Screening and has had no change in antipsychotic medication(s) (minor dose adjustments for tolerability purposes may be permitted) for at least 6 weeks prior to Screening.
Who cannot join
- Subject has a DSM-5 diagnosis or presence of symptoms consistent with a current DSM-5 diagnosis other than schizophrenia.
- Subject has attempted suicide within 6 months prior to Screening.
- 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 Columbia Suicide Severity Rating Scale (C-SSRS) at Screening (ie, in the past 1 month) or at any subsequent C-SSRS assessment prior to dosing (ie, since last visit).
- Subject is at significant risk of harming him/herself or others (passive or active) according to the Investigator's judgment.
Trial locations and contacts
7 sites in 1 country.
7 sites in 1 country
United States7 sites
Atlanta Center for Medical Research
Atlanta, Georgia, 30331
Woodland International Research Group, LLC
Little Rock, Arkansas, 72211
Behavioral Clinical Research, Inc
Miami Lakes, Florida, 33016
Neuro-Behavioral Clinical Research, Inc
North Canton, Ohio, 44720
Research Centers of America at Fort Lauderdale Behavioral Health Center
Oakland Park, Florida, 33334
Pillar Clinical Research, LLC
Richardson, Texas, 75080
Woodland Research Northwest
Rogers, Arkansas, 72758
About this study
Official title: A Double-Blind, Placebo-Controlled, Randomized Withdrawal Study to Evaluate SEP-363856 Physical Dependence in Adult Subjects With Schizophrenia
A Clinical Study to learn if SEP-363856 has physical dependence in adults with schizophrenia. This study will be held in approximately 6 study sites in the United States. It will be accepting male and female participants age 18 years to 65 years. Participation will be up to approximately10 weeks.
Read the detailed description
This is a double-blind, placebo-controlled, randomized withdrawal study comparing abrupt discontinuation of SEP-363856 (SEP-363856 switched to placebo) to continuous SEP-363856 treatment in male and female adult subjects with schizophrenia.
- Conditions
- Schizophrenia
- Being tested
- SEP-363856, Placebo
- Keywords
- Schizophrenia
- Medical subject headings
- Schizophrenia
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
SEP-363856Drug
SEP-363856 Tablet
PlaceboDrug
Placebo Tablet
| Study group | Role | What they receive |
|---|---|---|
| SEP-363856 | Experimental | Not described Receives: Drug: SEP-363856 |
| Placebo | Placebo comparator | Not described Receives: Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Maximum change from the steady-state baseline (CSSBmax) in the total score of the 20 item Physician Withdrawal Checklist (PWC-20) during the 7-day Randomized Withdrawal Period
Measured: up to10 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 May 2023
- Study start21 Jun 2023
- Primary completion15 Mar 2024
- Study completion15 Mar 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for SchizophreniaStudies of the same condition, open and under way.
- More trials run by Otsuka Pharmaceutical Development & Commercialization, Inc.The sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- double blind, randomized
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 60 participants (actual)
Sponsor and investigators
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05848700
- Sponsor's protocol ID
- SEP361-121
- Status last verified
- Jun 2024
- First submitted
- 27 Apr 2023
- Last updated
- 26 Jun 2024
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- 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.
Study at a glance
From the registry record, last updated by the sponsor on 26 Jun 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Double-Blind, Placebo-Controlled, Randomized Withdrawal Study to Evaluate SEP-363856 Physical Dependence in Adult Subjects With Schizophrenia
- ClinicalTrials.gov ID
- NCT05848700
- Acronym / sponsor ID
- SEP361-121
- Conditions
- Schizophrenia
- Keywords
- Schizophrenia
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 60 participants (actual)
- Lead sponsor
- Otsuka Pharmaceutical Development & Commercialization, Inc.Industry (pharma, biotech, devices)
- Study start
- 21 Jun 2023 (actual)
- Primary completion
- 15 Mar 2024 (actual)
- Study completion
- 15 Mar 2024 (actual)
- First posted
- 8 May 2023 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
A Clinical Study to learn if SEP-363856 has physical dependence in adults with schizophrenia. This study will be held in approximately 6 study sites in the United States. It will be accepting male and female participants age 18 years to 65 years. Participation will be up to approximately10 weeks.
Detailed description
This is a double-blind, placebo-controlled, randomized withdrawal study comparing abrupt discontinuation of SEP-363856 (SEP-363856 switched to placebo) to continuous SEP-363856 treatment in male and female adult subjects with schizophrenia.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
- Model description
- double blind, randomized
| Arm | Type | Receives |
|---|---|---|
| SEP-363856 | Experimental | Drug: SEP-363856 |
| Placebo | Placebo comparator | Drug: Placebo |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- Male or female subject between 18 and 65 years of age (inclusive) at the time of informed consent.
- Subject meets Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria for a primary diagnosis of schizophrenia as established by clinical interview (using the DSM-5 as a reference and confirmed using the Structured Clinical Interview for DSM-5, Clinical Trials Version [SCID-CT]).
- Subject must have a Clinical Global Impression-Severity Scale (CGI-S) score ≤ 4 (normal to moderately ill) at Screening and Day 1.
- Subject must have a PANSS total score ≤ 80 at Screening and a score of ≤ 4 on the following PANSS items at Screening: P7 (hostility) and G8 (uncooperativeness).
- Subject has been taking an antipsychotic for at least 6 weeks prior to Screening and has had no change in antipsychotic medication(s) (minor dose adjustments for tolerability purposes may be permitted) for at least 6 weeks prior to Screening.
Key exclusion criteria (4 listed)
- Subject has a DSM-5 diagnosis or presence of symptoms consistent with a current DSM-5 diagnosis other than schizophrenia.
- Subject has attempted suicide within 6 months prior to Screening.
- 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 Columbia Suicide Severity Rating Scale (C-SSRS) at Screening (ie, in the past 1 month) or at any subsequent C-SSRS assessment prior to dosing (ie, since last visit).
- Subject is at significant risk of harming him/herself or others (passive or active) according to the Investigator's judgment.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| SEP-363856SEP-363856 Tablet | Drug | SEP-363856 |
| PlaceboPlacebo Tablet | Drug | Placebo |
Primary outcome
Maximum change from the steady-state baseline (CSSBmax) in the total score of the 20 item Physician Withdrawal Checklist (PWC-20) during the 7-day Randomized Withdrawal Period
Time frame: up to10 weeks
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Jun 2024.
- Individual participant dataSharing planned: 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.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
7 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing SEP-363856 in people with Schizophrenia, run by Otsuka Pharmaceutical Development & Commercialization, Inc. at 7 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 26 Jun 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 7 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Maximum change from the steady-state baseline (CSSBmax) in the total score of the 20 item Physician Withdrawal Checklist (PWC-20) during the 7-day Randomized Withdrawal Period (time frame: up to10 weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Jun 2024.