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SchizophreniaPhase 1NCT06253546

Safety, Tolerability, and Pharmacokinetic Study of TV-44749 in Chinese Patients With Schizophrenia

A Phase 1 study testing TV-44749 318mg, Oral Olanzapine 10mg/day and TV-44749 425mg in people with Schizophrenia, run by Teva Branded Pharmaceutical Products R&D LLC at 6 sites in China.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Primary Objective: To evaluate the safety and tolerability of single doses of TV-44749 for subcutaneous (sc) use in Chinese participants with schizophrenia. Secondary Objectives: To evaluate the pharmacokinetics (PK) of single doses of TV-44749 administered sc. Read more about this study

Who is it for?
Ages 18 to 64 years
Conditions the study is for
Schizophrenia
What is being tested?
TV-44749 318mg, Oral Olanzapine 10mg/day and TV-44749 425mg
Could I receive a placebo?
No, everyone receives an active treatment
How many people
24 participants
Where
6 sitesChina
Study dates
28 Mar 2024to 12 Jun 2025
Phase
Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

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 64 years
  • All sexes
  • No healthy volunteers
  • Adult

Who may be able to join

  • Body weight >50 kg and body mass index (BMI) between 18.5 to 38.0 kg/m2, inclusive, at the time of screening.
  • A current confirmed diagnosis of schizophrenia according to an evaluation by the investigator, using the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5)
  • Are clinically stable, on oral olanzapine (i.e., dose has not changed in the last 4 weeks), and not currently on other antipsychotic treatment at the time of screening.
  • No hospitalization for worsening of schizophrenic symptoms and no significant exacerbation of schizophrenic symptoms, as judged by the investigator, within the 3 months prior to screening.
  • Female participants must have a negative serum pregnancy test at screening, are sterile or postmenopausal, and not planning pregnancy within the study period and for an additional 6 months after last dose administration.
  • Male participants must be surgically sterile, or, if capable of producing offspring, has exclusively same-sex partners or is currently using an approved method of birth control.
Show all 9Show fewer
  • Agree to maintain current smoking or nonsmoking status at the time informed consent is obtained and throughout the study until completion of the end of study (EOS)/early termination (ET) visit.
  • Have no ongoing or expected significant life events (such as pending loss of housing, marital status change, long travel abroad, surgery, etc.) that could affect study outcomes expected throughout the period of study participation.
  • NOTE: Additional criteria apply, please contact the investigator for more information.

Who cannot join

  • Presence or have a history of clinically significant diseases of the renal, hepatic, gastrointestinal, cardiovascular, musculoskeletal system or presence or history of clinically significant immunological, endocrine, metabolic, neurological, or psychiatric disorder(s) (other than schizophrenia), or a history of any illness that, in the opinion of the principal investigator, might pose additional risk to the participant by participation in the study or confound the results of the study
  • Major trauma or surgery in the 2 months before screening or at any time between screening and the first dose of the investigational medicinal product (IMP), surgery scheduled during the study or follow-up period, or open biopsy within 4 months prior to screening
  • History of malignancy or treatment of malignancy in the last 5 years, excluding resected basal cell or squamous cell carcinoma of the skin.
  • NOTE: Additional criteria apply, please contact the investigator for more information.

Trial locations and contacts

6 sites in 1 country.

6 sites in 1 country

China6 sites
  • Teva Investigational Site 88049

    Beijing, 100088

  • Teva Investigational Site 88048

    Beijing, 100191

  • Teva Investigational Site 88047

    Guangzhou, 510370

  • Teva Investigational Site 88046

    Shanghai, 200030

  • Teva Investigational Site 88050

    Wuhan, 430022

  • Teva Investigational Site 88056

    Xi'an, 710061

Other trials in China

About this study

Official title: A Phase 1, Single Dose, Parallel Cohort Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of TV-44749, Olanzapine for Extended-Release Injectable Suspension for Subcutaneous Use, in Chinese Patients With Schizophrenia

Primary Objective:

To evaluate the safety and tolerability of single doses of TV-44749 for subcutaneous (sc) use in Chinese participants with schizophrenia.

Secondary Objectives:

  • To evaluate the pharmacokinetics (PK) of single doses of TV-44749 administered sc.
  • To evaluate the pharmacokinetics of oral olanzapine tablets following multiple dose administration.
  • To monitor the safety and tolerability of multiple doses of oral olanzapine tablets given in the study.
Read the detailed description

The total study duration for participants is planned to be approximately 13 weeks, including 40 days of screening, 1-week oral olanzapine treatment, a 1-week washout period, 4-week TV-44749 treatment, and 2-week follow-up period after the last dosing interval.

Conditions
Schizophrenia
Being tested
TV-44749 318mg, Oral Olanzapine 10mg/day, TV-44749 425mg, Oral Olanzapine 15mg/day, TV-44749 531mg
Medical subject headings
Schizophrenia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • TV-44749 318mgDrug

    Pharmaceutical form:

    extended-release injectable suspension

    Route of administration: subcutaneous injection

  • Oral Olanzapine 10mg/dayDrug

    Also called ZYPREXA

    Pharmaceutical form:

    tablet

    Route of administration:

    oral

  • TV-44749 425mgDrug

    Pharmaceutical form: extended-release injectable suspension

    Route of administration: subcutaneous injection

  • Oral Olanzapine 15mg/dayDrug

    Also called ZYPREXA

    Pharmaceutical form: tablet

    Route of administration: oral

  • TV-44749 531mgDrug

    Pharmaceutical form: extended-release injectable suspension

    Route of administration: subcutaneous injection

  • Oral Olanzapine 20mg/dayDrug

    Also called ZYPREXA

    Pharmaceutical form: tablet

    Route of administration: oral

Study groups in NCT06253546
Study groupRoleWhat they receive
Cohort 1ExperimentalPeriod 1: Participants will receive oral olanzapine daily Period 2: Participants will receive subcutaneous (sc) injection of TV-44749
Receives: Drug: TV-44749 318mg; Drug: Oral Olanzapine 10mg/day
Cohort 2ExperimentalPeriod 1: Participants will receive oral olanzapine daily Period 2: Participants will receive sc injection of TV-44749
Receives: Drug: TV-44749 425mg; Drug: Oral Olanzapine 15mg/day
Cohort 3ExperimentalPeriod 1: Participants will receive oral olanzapine daily Period 2: Participants will receive sc injection of TV-44749
Receives: Drug: TV-44749 531mg; Drug: Oral Olanzapine 20mg/day

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Period 2: Number of Participants With Treatment Emergent Adverse Events (TEAEs)

    An adverse event (AE) was defined as any untoward medical occurrence in a participant who received the study drug without regard to possibility of causal relationship. Treatment-emergent AEs were defined as AEs that occurred after the first dose of study drug was administered in Period 1 through end of the trial. A summary of other non-serious AEs and all serious AEs (SAEs), regardless of causality is located in the Reported AE section.

    Measured: Day 1 Up to Day 43

  2. Period 2: Number of Participants With Treatment Emergent SAEs

    An AE was defined as any untoward medical occurrence in a participant who received the study drug without regard to possibility of causal relationship. The SAEs were defined as death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized participant and required medical intervention to prevent 1 of the outcomes listed in this definition. Treatment-emergent AEs were defined as AEs that occurred after the first dose of study drug was administered in Period 1 through end of the trial. A summary of other non-serious AEs and all SAEs, regardless of causality is located in the Reported AE section.

    Measured: Day 1 Up to Day 43

  3. Period 2: Number of Participants With Injection Site AEs

    Injection site AEs included injection site pruritus, induration, warmth, and abscess. A summary of other non-serious AEs and all SAEs, regardless of causality is located in the Reported AE section. All injection site AEs are reported in this outcome measure and the AE module only reports non-serious AEs at the 5% threshold. In the AE module, a participant could have been included for multiple injection site AEs.

    Measured: Day 1 Up to Day 43

Secondary outcomes (11)
  1. Period 2: Maximum Observed Plasma Drug Concentration (Cmax) of TV-44749

    Measured: Day 1 Up to Day 43

  2. Period 2: Area Under the Plasma Drug Concentration-time Curve (AUC) Over the Period Following Administration on Day 1 to the Time of the Last Measurable Concentration (AUC0-t) of TV-44749

    Measured: Day 1 Up to Day 43

  3. Period 2: AUC of TV-44749 Over the Period Following Administration on Day 1 Extrapolated to Infinity (AUC0-inf)

    Measured: Day 1 Up to Day 43

  4. Period 2: Time to Maximum Observed Concentration (Tmax) of TV-44749

    Measured: Day 1 Up to Day 43

  5. Period 2: Apparent Elimination Half-Life (t½) of TV-44749

    Measured: Day 1 Up to Day 43

  6. Period 1: Maximum Observed Plasma Drug Concentration at Steady State (Cmax,ss[Oral Olanzapine])

    Measured: Day -8

  7. Period 1: AUC of Oral Olanzapine From Time 0 to the End of the Dosing Interval (24 Hour) at Steady State (AUC0-tau,ss[Oral Olanzapine])

    Measured: Day -8

  8. Period 1: Calculated AUC of Oral Olanzapine at Steady State Extrapolated Over 28 Days (AUC0-tau,ss[Oral Olanzapine] * 28)

    The steady-state AUC of oral olanzapine over a 28-day dosing interval was calculated by extrapolating the 24-hour AUC obtained following administration of the seventh oral dose (Day -8) to a 28-day period (AUC0-tau,ss[oral olanzapine] * 28).

    Measured: Day -8 up to Day 20

  9. Period 1: Time to Maximum Concentration of Oral Olanzapine at Steady State (Tmax,ss[Oral Olanzapine])

    Measured: Day -8

  10. Period 1: Number of Participants With TEAEs

    An AE was defined as any untoward medical occurrence in a participant who received the study drug without regard to possibility of causal relationship. Treatment-emergent AEs were defined as AEs that occurred after the first dose of study drug was administered in Period 1 through end of the trial. A summary of other non-serious AEs and all SAEs, regardless of causality is located in the Reported AE section.

    Measured: Day -14 up to Day -8

  11. Period 1: Number of Participants With Treatment Emergent SAEs

    An AE was defined as any untoward medical occurrence in a participant who received the study drug without regard to possibility of causal relationship. The SAEs were defined as death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized participant and required medical intervention to prevent 1 of the outcomes listed in this definition. Treatment-emergent AEs were defined as AEs that occurred after the first dose of study drug was administered in Period 1 through end of the trial. A summary of other non-SAEs and all serious AEs, regardless of causality is located in the Reported AE section.

    Measured: Day -14 up to Day -8

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Feb 2024
  2. Study start28 Mar 2024
  3. Primary completion12 Jun 2025
  4. Study completion12 Jun 2025

Resources

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
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
24 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06253546
Sponsor's protocol ID
TV44749-PK-10188
Status last verified
Jun 2026
First submitted
2 Feb 2024
Last updated
30 Jun 2026
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: Qualified researchers may request access to patient level data and related study documents including the study protocol and the statistical analysis plan. Requests will be assessed for scientific merit, product approval status, and conflicts of interest. If the request is approved, patient level data will be de-identified and study documents will be redacted to protect the privacy of trial participants and to protect commercially confidential information. Please email USMedInfo@tevapharm.com to make your request.

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing TV-44749 318mg, Oral Olanzapine 10mg/day and TV-44749 425mg in people with Schizophrenia, run by Teva Branded Pharmaceutical Products R&D LLC at 6 sites in China.

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 9 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 30 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 6 sites in China. 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. 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?

Yes. Results are posted in the registry (first posted 30 Jun 2026). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

Period 2: Number of Participants With Treatment Emergent Adverse Events (TEAEs) (time frame: Day 1 Up to Day 43). The study lists 3 primary outcomes in all. 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 30 Jun 2026.

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