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A Trial of Brexpiprazole in the Treatment of Borderline Personality Disorder

A Multicenter, Randomized, Flexible-dose, Double-blind Trial of Brexpiprazole Versus Placebo for the Treatment of Adults With Borderline Personality Disorder

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04100096
Enrollment
332
Registered
2019-09-24
Start date
2019-10-17
Completion date
2021-06-27
Last updated
2024-07-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Borderline Personality Disorder

Brief summary

There are currently no pharmacological treatments approved to treat borderline personality disorder (BPD). This trial will be conducted to evaluate the efficacy and safety of brexpiprazole for the treatment of participants diagnosed with BPD to provide a pharmacological treatment for BPD.

Interventions

DRUGBrexpiprazole

Tablet

OTHERPlacebo

Tablet

Sponsors

Otsuka Pharmaceutical Development & Commercialization, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Male or female participants, ages 18 to 65, inclusive, at the time of informed consent * Participants with a primary Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5) diagnosis of BPD confirmed by the Structured Clinical Interview for DSM-5 Personality Disorders (SCID-5-PD) at screening. * At screening and Day 0, participants must have a total score ≥ 12 on the Zanarini Rating Scale for BPD (ZAN-BPD) scale. * Participants who, in the investigator's judgment, require treatment with a medication for BPD. * Participants willing to discontinue all prohibited medications to meet protocol-required washouts prior to and during the trial period.

Exclusion criteria

* Sexually active males or females of childbearing potential who do not agree to practice 2 different methods of birth control or remain abstinent during the trial and for 30 days after the last dose of investigational medicinal product (IMP). Consensual sexual activity that cannot biologically result in pregnancy may not be participant to required birth control methods, following discussion with the medical monitor. Male participants must also agree not to donate sperm from trial screening through 30 days after the last dose of IMP. * Women who are breastfeeding and/or who have a positive pregnancy test result prior to receiving IMP. * Participants with a concurrent DSM-5 diagnosis of schizophrenia or schizoaffective disorder. Also, participants with a concurrent diagnosis of bipolar I disorder, bipolar II disorder, delirium, dementia, amnesia, eating disorder, antisocial personality disorder, or other cognitive disorders. * Participants with a current diagnosis of substance or alcohol use disorder within 90 days prior to screening visit. * Participants who fulfill the following criteria related to suicide and/or suicidal ideation are excluded: * Participants who have a significant risk of committing violent acts, serious self-harm, or suicide based on history or routine psychiatric status examination, or those who are homicidal or considered to be a high risk to others, or participants with a response of yes on the Columbia-suicide severity rating scale (C-SSRS) Suicidal Ideation Item 5, OR * Participants with a response of yes on the C-SSRS Suicidal Behavior Items, OR * Participants who have had 3 suicide attempts, OR, * Participants who have had 3 or more hospitalizations due to suicidal behavior. * Participants who received brexpiprazole in any prior clinical trial or participants who have taken or are taking commercially available brexpiprazole (Rexulti®). * Participants who are currently either inpatient or partially hospitalized. * Participants who participated in a clinical trial within 90 days prior to screening or who participated in more than 2 clinical trials within a year prior to screening.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in the Zanarini Rating Scale for Borderline Personality Disorder (ZAN-BPD) Total ScoreBaseline (Day 0) to Week 10The ZAN-BPD is a clinician-administered scale designed to assess severity of disease symptoms in participants with BPD based on clinician rating on 9 criteria. Each of the 9 criteria for BPD was rated on a 5-point anchored rating scale of 0 to 4. These scores were clustered into 4 sector scores (akin to domains) and a total score. The 4 sector scores added up to provide the overall total score for the ZAN-BPD, which ranged from 0 to 36. A higher score represented a higher severity of disease symptoms. Mixed model repeated measures = MMRM, antidepressant therapy = ADT.

Secondary

MeasureTime frameDescription
Change From Baseline in the Patient's Global Impression of Severity (PGI-S)Baseline (Day 0), Weeks 2, 4, 6, 8, 10 and 12PGI-S is a 7-point single-item self-report scale for the participant to rate the severity of symptoms of BPD ranging from 0 to 7 where 1 denoted no symptoms and 7 denoted very severe.
Patient's Global Impression of Change (PGI-C) Scale ScoreWeeks 2, 4, 6, 8,10 and 12A 7-point single-item self-report scale depicting a participant's rating of overall change in their condition since starting trial medication. Participants answered the question: Since starting study medication, how much have their symptoms of Borderline Personality Disorder changed? with a score ranging from 1 to 7 where 1 denoted very much improved and 7 denoted very much worse.
Clinical Global Impression - Improvement (CGI-I) Scale ScoreWeeks 2, 4, 6, 8, 10 and 12Participant's condition was assessed using CGI-I scale. CGI-I is an observer-rated scale with a total score of 0 to 7 and a higher score represents a worse outcome. The score included the following response choices: 0 = not assessed; 1 = normal, not at all ill; 2 = borderline ill; 3 = mildly ill; 4 = moderately ill; 5 = markedly ill; 6 = severely ill; and 7 = among the most extremely ill participants.
Number of Participants With Treatment Emergent Adverse Events (TEAEs)From Baseline (Day 0) to 21 days after last dose (Up to Week 15)An adverse event (AE) is any untoward medical occurrence in a clinical trial participant administered an IMP and which does not necessarily have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product. A TEAE is defined as an AE that started after start of study treatment.
Number of Participants With Potentially Clinically Relevant Laboratory Test ValuesFrom first dose of study drug up to Week 12Laboratory parameters included hematology(Hem), serum chemistry(Che) and urinalysis(Uri). Criterion:Che-Alkaline Phosphatase (Units/liter \[U/L\]):≥3 x ULN, Aspartate Aminotransferase (U/L):≥3 x ULN,Bilirubin (mg/deciliter\[dL\]):≥2.0,Cholesterol(Cho);Cho,fasting(mg/dl):≥240,Creatine Kinase(U/L):≥3 x ULN, Creatinine(mg/dL):≥2.0,Glucose (Glu);Glu,fasting(mg/dL):100,High Density Lipoprotein (HDL) Cho (mg/dL):Male (M) \< 40or Female (F) \<50, Low Density Lipoprotein (LDL) Cho(mg/dL):≥160,Prolactin (nanograms/milliliter \[ng/mL\]):\>1 x ULN,Triglyceride (mg/dL):≥150,Urate(mg/dL): M ≥10.5 or F ≥8.5,Urea Nitrogen (mg/dL):≥30,Hem-Eosinophils (Eosi) (10\^9 L):≥10%,Hematocrit (%): M ≤37% and ≥3 percentage (per) point decrease from baseline or F≤32% and ≥3per point decrease from baseline, Hemaglobin(gram per deciliter \[g/dL\]):M ≤11.5 or F ≤9.5,Leukocytes(10\^9/L):≤2.8 x10\^3/uL,≤16.0 x10\^3/uL,Platelets(10\^9/L):≤75 x10\^3/ uL,≥700 x10\^3/uL,Uri-Glu,urine; Protein,urine:Increase of ≥2U.
Number of Participants With Potential Clinical Relevant Laboratory Test Values - ProlactinWeek 12New onset (\> 1 x upper limit of normal {ULN}, \> 2 x ULN, 3 X ULN) prolactin means a participant who attains a categorical change during treatment phase but not at baseline. Only those categories with at least one participant with event are reported.
Number of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsFrom first dose of study drug up to Week 12Vital Signs included orthostatic hypotension, heart rate (HR), systolic and diastolic blood pressure (bp), and weight. Potential clinical relevance criterion: Orthostatic Hypotension:\>= 20 millimeters of mercury (mmhg) decrease in systolic bp and \>= 25 beats per minute (bpm) increase in HR from supine to standing; HR Standing (bpm):\< 50 and decrease \>= 15,\> 120 and increase \>= 15; HR Supine (bpm): \< 50 and decrease \>= 15,\>120 and increase \>= 15; Systolic BP Standing (mmhg):\< 90 and decrease \>=20,\> 180 and increase \>= 20; Systolic BP Supine (mmhg):\< 90 and decrease \>= 20, \>180 and increase \>= 20; Diastolic BP Standing (mmHg): \< 50 and decrease \>= 15,\> 105 and increase \>= 15; Diastolic BP Supine (mmHg):\< 50 and decrease \>= 15, \> 105 and increase \>= 15; Weight (kilograms\[kg\]): Decrease or increase \>= 7%. Only those categories with at least one participant with event are reported.
Change From Baseline in the Clinical Global Impression - Severity of Illness (CGI-S) ScoreBaseline (Day 0) to Week 10The severity of illness for each participant was rated using the CGI-S. CGI-S is an observer-rated scale with a total score range of 0 to 7 where a higher score represented a worse outcome. The response choices were 0 = not assessed; 1 = normal, not at all ill; 2 = borderline ill; 3 = mildly ill; 4 = moderately ill; 5 = markedly ill; 6 = severely ill; and 7 = among the most extremely ill participants.
Change From Baseline in Waist CircumferenceBaseline (Screening: Day -21 to Day -1), Week 12
Change From Baseline in Body Mass Index (BMI)Baseline (Day 0), Weeks 2, 4, 6, 8, 10, and 12BMI is defined as weight in kilograms divided by the square of height in meters.
Number of Participants With Potentially Clinically Relevant Abnormalities in 12-Lead Electrocardiogram (ECG) ParametersWeek 12ECG parameters analyzed included rhythm, conduction and ST/T morphology. Potential clinical relevance criterion: Rhythm- Supraventricular Premature Beat: not present at baseline and present post baseline, Ventricular Premature Beat: not present at baseline and present post baseline, Conduction- Right Bundle Branch Block: not present at baseline and present post baseline, ST/T Morphology- Symmetrical (Sym) T-Wave Inversion: not present at baseline and present post baseline. Only those categories with at least one participant with event are reported.
Change From Baseline in Simpson-Angus Scale (SAS) Total ScoreBaseline (Day 0), Week 6 and 12The SAS consisted of a list of 10 symptoms of Parkinsonism (gait, arm dropping, shoulder shaking, elbow rigidity, wrist rigidity, head rotation, glabella tap, tremor, salivation, and akathisia). Each item was rated on a 5-point scale, with a score of zero representing the absence of symptoms and a score of 4 representing a severe condition. The SAS total score was the sum of the scores for all 10 items and ranged from 0 to 40. Higher scores indicated worst outcome.
Change From Baseline in Abnormal Involuntary Movement Scale (AIMS) Total ScoreBaseline (Day 0), Weeks 6 and 12AIMS assessment consisted of 10 items describing symptoms of dyskinesia (muscles of facial expression, lips and perioral area, jaw, tongue, upper extremities, lower extremities, neck/shoulders/hips, overall movement severity, incapacitation, participant awareness). Facial and oral movements (items 1 through 4), extremity movements (items 5 and 6), and trunk movements (item 7) were observed unobtrusively while participant was at rest (e.g., in waiting room), and study physician would make global judgments on participant's dyskinesia's (items 8 through 10). Each item was rated on 5-point scale of severity from 0 (none) to 4 (severe) and assessment of problems with teeth or dentures (yes = 1, no = 0) and if the participant normally wears dentures (yes = 1, no = 0). Total score ranged from 0 to 42. Higher scores indicated worst outcome.
Change From Baseline in Barnes Akathisia Rating Scale (BARS): Global Clinical Assessment of Akathisia ScoreBaseline (Day 0), Weeks 6 and 12The BARS consisted of 4 items related to akathisia: objective observation of akathisia by the investigator, subjective feelings of restlessness by the participant, subjective distress due to akathisia, and global clinical assessment of akathisia. The global clinical evaluation was made on a 6-point scale, with zero representing absence of symptoms and a score of 5 representing severe akathisia.
Number of Participants With Suicidal Behavior and Suicidal Ideation As Assessed by Columbia-Suicide Severity Rating Scale (C-SSRS)Baseline (Day 0) to Week 12Suicidality was monitored using the C-SSRS. Suicidality was defined as at least one occurrence of suicidal ideation (including wish to be dead, non-specific suicidal thought, suicidal ideation-no intent, ideation with intent, no plan, ideation with plan/intent) or at least one occurrence of suicidal behavior (actual attempt, non-suicidal self-injurious behavior, interrupted attempt, aborted attempt, preparatory acts/behavior, suicidal behavior) for the assessment period.
Change From Baseline in Body WeightBaseline (Day 0), Weeks 2, 4, 6, 8, 10, and 12

Countries

Spain, Ukraine, United States

Participant flow

Recruitment details

Participants were enrolled in the study at 62 study centers in the United States, Spain, and Ukraine from 17 October 2019 to 27 Jun 2021.

Pre-assignment details

332 participants were enrolled out of which 324 participants were randomized to receive brexpiprazole or matching placebo in the treatment phase.

Participants by arm

ArmCount
Brexpiprazole 2 to 3 Milligrams Per Day
Participants received brexpiprazole, 2-3 mg/day tablets, orally, up to Week 12 during the treatment phase.
159
Placebo
Participants received brexpiprazole-matching placebo tablets, orally, up to Week 12 during the treatment phase.
165
Total324

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event197
Overall StudyLack of Efficacy01
Overall StudyLost to Follow-up1311
Overall StudyNon-Compliance With Study Drug13
Overall StudyProtocol Deviation11
Overall StudyWithdrawal by Participant1315

Baseline characteristics

CharacteristicPlaceboTotalBrexpiprazole 2 to 3 Milligrams Per Day
Age, Continuous31.0 years
STANDARD_DEVIATION 10.9
31.5 years
STANDARD_DEVIATION 10.7
32.0 years
STANDARD_DEVIATION 10.6
Race/Ethnicity, Customized
Ethnicity
Hispanic or Latino
33 Participants64 Participants31 Participants
Race/Ethnicity, Customized
Ethnicity
Not Hispanic or Latino
131 Participants258 Participants127 Participants
Race/Ethnicity, Customized
Ethnicity
Other
1 Participants1 Participants0 Participants
Race/Ethnicity, Customized
Ethnicity
Unknown
0 Participants1 Participants1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants3 Participants3 Participants
Race (NIH/OMB)
Asian
2 Participants9 Participants7 Participants
Race (NIH/OMB)
Black or African American
22 Participants41 Participants19 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants2 Participants1 Participants
Race (NIH/OMB)
Unknown or Not Reported
9 Participants15 Participants6 Participants
Race (NIH/OMB)
White
131 Participants254 Participants123 Participants
Sex: Female, Male
Female
137 Participants266 Participants129 Participants
Sex: Female, Male
Male
28 Participants58 Participants30 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 1570 / 165
other
Total, other adverse events
69 / 15745 / 165
serious
Total, serious adverse events
5 / 1572 / 165

Outcome results

Primary

Change From Baseline in the Zanarini Rating Scale for Borderline Personality Disorder (ZAN-BPD) Total Score

The ZAN-BPD is a clinician-administered scale designed to assess severity of disease symptoms in participants with BPD based on clinician rating on 9 criteria. Each of the 9 criteria for BPD was rated on a 5-point anchored rating scale of 0 to 4. These scores were clustered into 4 sector scores (akin to domains) and a total score. The 4 sector scores added up to provide the overall total score for the ZAN-BPD, which ranged from 0 to 36. A higher score represented a higher severity of disease symptoms. Mixed model repeated measures = MMRM, antidepressant therapy = ADT.

Time frame: Baseline (Day 0) to Week 10

Population: FAS for enriched participants is a subset of randomized population who met pre-defined criteria and who received at least 1 dose of double-blind investigational medicinal product (IMP) and had a baseline value and at least 1 valid post-randomization efficacy evaluation for ZAN-BPD total score. Overall number of participants analyzed = number of participants with data available for analysis for this outcome measure.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in the Zanarini Rating Scale for Borderline Personality Disorder (ZAN-BPD) Total Score-7.27 score on a scaleStandard Error 0.8
PlaceboChange From Baseline in the Zanarini Rating Scale for Borderline Personality Disorder (ZAN-BPD) Total Score-6.25 score on a scaleStandard Error 0.76
p-value: 0.24395% CI: [-2.75, 0.7]MMRM
Secondary

Change From Baseline in Abnormal Involuntary Movement Scale (AIMS) Total Score

AIMS assessment consisted of 10 items describing symptoms of dyskinesia (muscles of facial expression, lips and perioral area, jaw, tongue, upper extremities, lower extremities, neck/shoulders/hips, overall movement severity, incapacitation, participant awareness). Facial and oral movements (items 1 through 4), extremity movements (items 5 and 6), and trunk movements (item 7) were observed unobtrusively while participant was at rest (e.g., in waiting room), and study physician would make global judgments on participant's dyskinesia's (items 8 through 10). Each item was rated on 5-point scale of severity from 0 (none) to 4 (severe) and assessment of problems with teeth or dentures (yes = 1, no = 0) and if the participant normally wears dentures (yes = 1, no = 0). Total score ranged from 0 to 42. Higher scores indicated worst outcome.

Time frame: Baseline (Day 0), Weeks 6 and 12

Population: SP: Participants who received at least 1 dose of study drug (brexpiprazole or placebo). Overall number of participants analyzed = number of participants with data available for analysis for this outcome measure. Number analyzed = number of participants with data available for analyses at the specified time point.

ArmMeasureGroupValue (MEAN)Dispersion
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Abnormal Involuntary Movement Scale (AIMS) Total ScoreBaseline (Day 0)0.03 score on a scaleStandard Deviation 0.2
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Abnormal Involuntary Movement Scale (AIMS) Total ScoreChange from Baseline at Week 6-0.02 score on a scaleStandard Deviation 0.25
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Abnormal Involuntary Movement Scale (AIMS) Total ScoreChange from Baseline at Week 12-0.02 score on a scaleStandard Deviation 0.27
PlaceboChange From Baseline in Abnormal Involuntary Movement Scale (AIMS) Total ScoreBaseline (Day 0)0.04 score on a scaleStandard Deviation 0.42
PlaceboChange From Baseline in Abnormal Involuntary Movement Scale (AIMS) Total ScoreChange from Baseline at Week 60.09 score on a scaleStandard Deviation 0.87
PlaceboChange From Baseline in Abnormal Involuntary Movement Scale (AIMS) Total ScoreChange from Baseline at Week 120.07 score on a scaleStandard Deviation 0.73
Comparison: Week 6p-value: 0.097495% CI: [-0.25, 0.02]ANCOVA
Comparison: Week 12p-value: 0.39195% CI: [-0.2, 0.08]ANCOVA
Secondary

Change From Baseline in Barnes Akathisia Rating Scale (BARS): Global Clinical Assessment of Akathisia Score

The BARS consisted of 4 items related to akathisia: objective observation of akathisia by the investigator, subjective feelings of restlessness by the participant, subjective distress due to akathisia, and global clinical assessment of akathisia. The global clinical evaluation was made on a 6-point scale, with zero representing absence of symptoms and a score of 5 representing severe akathisia.

Time frame: Baseline (Day 0), Weeks 6 and 12

Population: Safety population included those participants in who received at least 1 dose of study drug (brexpiprazole or placebo). Overall number of participants analyzed = number of participants with data available for analysis for this outcome measure. Number analyzed = number of participants with data available for analyses at the specified time point.

ArmMeasureGroupValue (MEAN)Dispersion
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Barnes Akathisia Rating Scale (BARS): Global Clinical Assessment of Akathisia ScoreBaseline (Day 0)0.08 score on a scaleStandard Deviation 0.27
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Barnes Akathisia Rating Scale (BARS): Global Clinical Assessment of Akathisia ScoreChange from Baseline at Week 60.15 score on a scaleStandard Deviation 0.59
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Barnes Akathisia Rating Scale (BARS): Global Clinical Assessment of Akathisia ScoreChange from Baseline at Week 120.06 score on a scaleStandard Deviation 0.53
PlaceboChange From Baseline in Barnes Akathisia Rating Scale (BARS): Global Clinical Assessment of Akathisia ScoreBaseline (Day 0)0.12 score on a scaleStandard Deviation 0.4
PlaceboChange From Baseline in Barnes Akathisia Rating Scale (BARS): Global Clinical Assessment of Akathisia ScoreChange from Baseline at Week 6-0.04 score on a scaleStandard Deviation 0.37
PlaceboChange From Baseline in Barnes Akathisia Rating Scale (BARS): Global Clinical Assessment of Akathisia ScoreChange from Baseline at Week 12-0.05 score on a scaleStandard Deviation 0.33
Comparison: Week 6p-value: 0.00639% CI: [0.04, 0.26]ANCOVA
Comparison: Week 12p-value: 0.06795% CI: [-0.01, 0.19]ANCOVA
Secondary

Change From Baseline in Body Mass Index (BMI)

BMI is defined as weight in kilograms divided by the square of height in meters.

Time frame: Baseline (Day 0), Weeks 2, 4, 6, 8, 10, and 12

Population: SP: Participants who received at least 1 dose of study drug (brexpiprazole or placebo). Overall number of participants analyzed= number of participants with data available for analyses for this outcome measure. Number analyzed= number of participants with data available for analyses at the specified time point.

ArmMeasureGroupValue (MEAN)Dispersion
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body Mass Index (BMI)Change From Baseline at Week 40.38 kilograms per square meter (kg/m^2)Standard Deviation 0.68
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body Mass Index (BMI)Change From Baseline at Week 80.57 kilograms per square meter (kg/m^2)Standard Deviation 1.01
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body Mass Index (BMI)Change From Baseline at Week 20.09 kilograms per square meter (kg/m^2)Standard Deviation 0.42
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body Mass Index (BMI)Change From Baseline at Week 100.76 kilograms per square meter (kg/m^2)Standard Deviation 1.1
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body Mass Index (BMI)Change From Baseline at Week 60.50 kilograms per square meter (kg/m^2)Standard Deviation 0.81
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body Mass Index (BMI)Change From Baseline at Week 120.64 kilograms per square meter (kg/m^2)Standard Deviation 1.17
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body Mass Index (BMI)Baseline (Day 0)27.35 kilograms per square meter (kg/m^2)Standard Deviation 7.49
PlaceboChange From Baseline in Body Mass Index (BMI)Change From Baseline at Week 120.13 kilograms per square meter (kg/m^2)Standard Deviation 1.01
PlaceboChange From Baseline in Body Mass Index (BMI)Baseline (Day 0)28.52 kilograms per square meter (kg/m^2)Standard Deviation 7.69
PlaceboChange From Baseline in Body Mass Index (BMI)Change From Baseline at Week 20.05 kilograms per square meter (kg/m^2)Standard Deviation 0.62
PlaceboChange From Baseline in Body Mass Index (BMI)Change From Baseline at Week 4-0.00 kilograms per square meter (kg/m^2)Standard Deviation 0.75
PlaceboChange From Baseline in Body Mass Index (BMI)Change From Baseline at Week 60.09 kilograms per square meter (kg/m^2)Standard Deviation 0.83
PlaceboChange From Baseline in Body Mass Index (BMI)Change From Baseline at Week 80.00 kilograms per square meter (kg/m^2)Standard Deviation 0.89
PlaceboChange From Baseline in Body Mass Index (BMI)Change From Baseline at Week 100.15 kilograms per square meter (kg/m^2)Standard Deviation 1
Comparison: Week 2p-value: 0.461395% CI: [-0.08, 0.17]ANCOVA
Comparison: Week 4p-value: 095% CI: [0.21, 0.55]ANCOVA
Comparison: Week 6p-value: 0.000195% CI: [0.21, 0.61]ANCOVA
Comparison: Week 8p-value: 095% CI: [0.33, 0.8]ANCOVA
Comparison: Week 10p-value: 095% CI: [0.34, 0.88]ANCOVA
Comparison: Week 12p-value: 0.000495% CI: [0.23, 0.8]ANCOVA
Secondary

Change From Baseline in Body Weight

Time frame: Baseline (Day 0), Weeks 2, 4, 6, 8, 10, and 12

Population: SP: Participants who received at least 1 dose of study drug (brexpiprazole or placebo). Overall number of participants analyzed = number of participants with data available for analyses for this outcome measure. Number analyzed = number of participants with data available for analyses at the specified time point.

ArmMeasureGroupValue (MEAN)Dispersion
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body WeightChange From Baseline at Week 41.05 kilogram (kg)Standard Deviation 1.92
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body WeightChange From Baseline at Week 81.55 kilogram (kg)Standard Deviation 2.75
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body WeightChange From Baseline at Week 20.27 kilogram (kg)Standard Deviation 1.15
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body WeightChange From Baseline at Week 102.09 kilogram (kg)Standard Deviation 2.96
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body WeightChange From Baseline at Week 61.39 kilogram (kg)Standard Deviation 2.25
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body WeightChange From Baseline at Week 121.74 kilogram (kg)Standard Deviation 3.09
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Body WeightBaseline (Day 0)78.60 kilogram (kg)Standard Deviation 22.15
PlaceboChange From Baseline in Body WeightChange From Baseline at Week 120.30 kilogram (kg)Standard Deviation 2.75
PlaceboChange From Baseline in Body WeightBaseline (Day 0)78.85 kilogram (kg)Standard Deviation 22.33
PlaceboChange From Baseline in Body WeightChange From Baseline at Week 20.09 kilogram (kg)Standard Deviation 1.62
PlaceboChange From Baseline in Body WeightChange From Baseline at Week 4-0.05 kilogram (kg)Standard Deviation 2.02
PlaceboChange From Baseline in Body WeightChange From Baseline at Week 60.20 kilogram (kg)Standard Deviation 2.21
PlaceboChange From Baseline in Body WeightChange From Baseline at Week 8-0.03 kilogram (kg)Standard Deviation 2.41
PlaceboChange From Baseline in Body WeightChange From Baseline at Week 100.37 kilogram (kg)Standard Deviation 2.72
Comparison: Week 2p-value: 0.27295% CI: [-0.14, 0.5]ANCOVA
Comparison: Week 4p-value: 095% CI: [0.63, 1.56]ANCOVA
Comparison: Week 6p-value: 095% CI: [0.63, 1.73]ANCOVA
Comparison: Week 8p-value: 095% CI: [0.92, 2.21]ANCOVA
Comparison: Week 10p-value: 095% CI: [0.99, 2.45]ANCOVA
Comparison: Week 12p-value: 0.000295% CI: [0.68, 2.19]ANCOVA
Secondary

Change From Baseline in Simpson-Angus Scale (SAS) Total Score

The SAS consisted of a list of 10 symptoms of Parkinsonism (gait, arm dropping, shoulder shaking, elbow rigidity, wrist rigidity, head rotation, glabella tap, tremor, salivation, and akathisia). Each item was rated on a 5-point scale, with a score of zero representing the absence of symptoms and a score of 4 representing a severe condition. The SAS total score was the sum of the scores for all 10 items and ranged from 0 to 40. Higher scores indicated worst outcome.

Time frame: Baseline (Day 0), Week 6 and 12

Population: SP: Participants who received at least 1 dose of study drug (brexpiprazole or placebo). Overall number of participants analyzed = number of participants with data available for analysis for this outcome measure. Number analyzed = number of participants with data available for analyses at the specified time point.

ArmMeasureGroupValue (MEAN)Dispersion
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Simpson-Angus Scale (SAS) Total ScoreBaseline (Day 0)0.18 score on a scaleStandard Deviation 0.65
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Simpson-Angus Scale (SAS) Total ScoreChange from Baseline at Week 60.04 score on a scaleStandard Deviation 0.76
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Simpson-Angus Scale (SAS) Total ScoreChange from Baseline at Week 120.04 score on a scaleStandard Deviation 0.88
PlaceboChange From Baseline in Simpson-Angus Scale (SAS) Total ScoreBaseline (Day 0)0.24 score on a scaleStandard Deviation 0.92
PlaceboChange From Baseline in Simpson-Angus Scale (SAS) Total ScoreChange from Baseline at Week 6-0.08 score on a scaleStandard Deviation 0.55
PlaceboChange From Baseline in Simpson-Angus Scale (SAS) Total ScoreChange from Baseline at Week 12-0.05 score on a scaleStandard Deviation 0.63
Comparison: Week 6p-value: 0.168795% CI: [-0.04, 0.25]ANCOVA
Comparison: Week 12p-value: 0.187495% CI: [-0.06, 0.29]ANCOVA
Secondary

Change From Baseline in the Clinical Global Impression - Severity of Illness (CGI-S) Score

The severity of illness for each participant was rated using the CGI-S. CGI-S is an observer-rated scale with a total score range of 0 to 7 where a higher score represented a worse outcome. The response choices were 0 = not assessed; 1 = normal, not at all ill; 2 = borderline ill; 3 = mildly ill; 4 = moderately ill; 5 = markedly ill; 6 = severely ill; and 7 = among the most extremely ill participants.

Time frame: Baseline (Day 0) to Week 10

Population: FAS for enriched participants is a subset of randomized population who met pre-defined criteria and who received at least 1 valid post-randomization efficacy evaluation for ZAN-BPD total score. Overall number of participants analyzed = number of participants with data available for analysis for this outcome measure.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in the Clinical Global Impression - Severity of Illness (CGI-S) Score-1.13 score on a scaleStandard Error 0.14
PlaceboChange From Baseline in the Clinical Global Impression - Severity of Illness (CGI-S) Score-1.09 score on a scaleStandard Error 0.14
p-value: 0.775995% CI: [-0.35, 0.27]MMRM
Secondary

Change From Baseline in the Patient's Global Impression of Severity (PGI-S)

PGI-S is a 7-point single-item self-report scale for the participant to rate the severity of symptoms of BPD ranging from 0 to 7 where 1 denoted no symptoms and 7 denoted very severe.

Time frame: Baseline (Day 0), Weeks 2, 4, 6, 8, 10 and 12

Population: FAS for enriched participants is a subset of randomized population who met pre-defined criteria and who received at least 1 valid post-randomization efficacy evaluation for ZAN-BPD total score. Overall number of participants analyzed = number of participants with data available for analysis for this outcome measure. Number analyzed = number of participants with data available for analyses at the specified time point.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in the Patient's Global Impression of Severity (PGI-S)Change from Baseline at Week 2-0.33 score on a scaleStandard Error 0.12
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in the Patient's Global Impression of Severity (PGI-S)Change from Baseline at Week 4-0.60 score on a scaleStandard Error 0.15
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in the Patient's Global Impression of Severity (PGI-S)Change from Baseline at Week 6-0.91 score on a scaleStandard Error 0.15
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in the Patient's Global Impression of Severity (PGI-S)Change from Baseline at Week 8-0.99 score on a scaleStandard Error 0.14
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in the Patient's Global Impression of Severity (PGI-S)Change from Baseline at Week 10-0.90 score on a scaleStandard Error 0.15
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in the Patient's Global Impression of Severity (PGI-S)Change from Baseline at Week 12-1.00 score on a scaleStandard Error 0.16
PlaceboChange From Baseline in the Patient's Global Impression of Severity (PGI-S)Change from Baseline at Week 10-0.79 score on a scaleStandard Error 0.14
PlaceboChange From Baseline in the Patient's Global Impression of Severity (PGI-S)Change from Baseline at Week 2-0.27 score on a scaleStandard Error 0.12
PlaceboChange From Baseline in the Patient's Global Impression of Severity (PGI-S)Change from Baseline at Week 8-0.69 score on a scaleStandard Error 0.14
PlaceboChange From Baseline in the Patient's Global Impression of Severity (PGI-S)Change from Baseline at Week 4-0.35 score on a scaleStandard Error 0.14
PlaceboChange From Baseline in the Patient's Global Impression of Severity (PGI-S)Change from Baseline at Week 12-0.86 score on a scaleStandard Error 0.15
PlaceboChange From Baseline in the Patient's Global Impression of Severity (PGI-S)Change from Baseline at Week 6-0.72 score on a scaleStandard Error 0.14
Comparison: Week 2p-value: 0.658595% CI: [-0.32, 0.2]MMRM
Comparison: Week 4p-value: 0.118195% CI: [-0.57, 0.06]MMRM
Comparison: Week 6p-value: 0.243195% CI: [-0.51, 0.13]MMRM
Comparison: Week 8p-value: 0.063895% CI: [-0.61, 0.02]MMRM
Comparison: Week 10p-value: 0.50595% CI: [-0.44, 0.22]MMRM
Comparison: Week 12p-value: 0.427795% CI: [-0.48, 0.21]MMRM
Secondary

Change From Baseline in Waist Circumference

Time frame: Baseline (Screening: Day -21 to Day -1), Week 12

Population: SP: Participants who received at least 1 dose of study drug (brexpiprazole or placebo). Overall number of participants analyzed= number of participants with data available for analyses for this outcome measure. Number analyzed= number of participants with data available for analyses at the specified time point.

ArmMeasureGroupValue (MEAN)Dispersion
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Waist CircumferenceBaseline (Screening: Day -21 to Day -1)89.74 centimeterStandard Deviation 17.54
Brexpiprazole 2-3 Milligrams Per DayChange From Baseline in Waist CircumferenceChange from Baseline at Week 121.07 centimeterStandard Deviation 5.23
PlaceboChange From Baseline in Waist CircumferenceBaseline (Screening: Day -21 to Day -1)90.01 centimeterStandard Deviation 17.25
PlaceboChange From Baseline in Waist CircumferenceChange from Baseline at Week 12-0.32 centimeterStandard Deviation 5.76
Comparison: Week 12p-value: 0.06295% CI: [-0.07, 2.68]ANCOVA
Secondary

Clinical Global Impression - Improvement (CGI-I) Scale Score

Participant's condition was assessed using CGI-I scale. CGI-I is an observer-rated scale with a total score of 0 to 7 and a higher score represents a worse outcome. The score included the following response choices: 0 = not assessed; 1 = normal, not at all ill; 2 = borderline ill; 3 = mildly ill; 4 = moderately ill; 5 = markedly ill; 6 = severely ill; and 7 = among the most extremely ill participants.

Time frame: Weeks 2, 4, 6, 8, 10 and 12

Population: FAS for enriched participants is a subset of randomized population who met pre-defined criteria and who received at least 1 valid post-randomization efficacy evaluation for ZAN-BPD total score. Number analyzed = number of participants with data available for analyses at the specified time point.

ArmMeasureGroupValue (MEAN)Dispersion
Brexpiprazole 2-3 Milligrams Per DayClinical Global Impression - Improvement (CGI-I) Scale ScoreWeek 22.99 score on a scaleStandard Deviation 0.96
Brexpiprazole 2-3 Milligrams Per DayClinical Global Impression - Improvement (CGI-I) Scale ScoreWeek 42.89 score on a scaleStandard Deviation 1.04
Brexpiprazole 2-3 Milligrams Per DayClinical Global Impression - Improvement (CGI-I) Scale ScoreWeek 62.62 score on a scaleStandard Deviation 1.05
Brexpiprazole 2-3 Milligrams Per DayClinical Global Impression - Improvement (CGI-I) Scale ScoreWeek 82.39 score on a scaleStandard Deviation 1.06
Brexpiprazole 2-3 Milligrams Per DayClinical Global Impression - Improvement (CGI-I) Scale ScoreWeek 102.45 score on a scaleStandard Deviation 1.18
Brexpiprazole 2-3 Milligrams Per DayClinical Global Impression - Improvement (CGI-I) Scale ScoreWeek 122.37 score on a scaleStandard Deviation 1.19
PlaceboClinical Global Impression - Improvement (CGI-I) Scale ScoreWeek 102.61 score on a scaleStandard Deviation 1.2
PlaceboClinical Global Impression - Improvement (CGI-I) Scale ScoreWeek 22.99 score on a scaleStandard Deviation 0.97
PlaceboClinical Global Impression - Improvement (CGI-I) Scale ScoreWeek 82.79 score on a scaleStandard Deviation 1.26
PlaceboClinical Global Impression - Improvement (CGI-I) Scale ScoreWeek 43.00 score on a scaleStandard Deviation 1.2
PlaceboClinical Global Impression - Improvement (CGI-I) Scale ScoreWeek 122.65 score on a scaleStandard Deviation 1.17
PlaceboClinical Global Impression - Improvement (CGI-I) Scale ScoreWeek 62.77 score on a scaleStandard Deviation 1.21
Comparison: Week 2p-value: 0.657995% CI: [-0.29, 0.19]Cochran-Mantel-Haenszel
Comparison: Week 4p-value: 0.372895% CI: [-0.43, 0.16]Cochran-Mantel-Haenszel
Comparison: Week 6p-value: 0.168495% CI: [-0.5, 0.09]Cochran-Mantel-Haenszel
Comparison: Week 8p-value: 0.004695% CI: [-0.74, -0.13]Cochran-Mantel-Haenszel
Comparison: Week 10p-value: 0.208795% CI: [-0.51, 0.11]Cochran-Mantel-Haenszel
Comparison: Week 12p-value: 0.038995% CI: [-0.64, -0.02]Cochran-Mantel-Haenszel
Secondary

Number of Participants With Potential Clinical Relevant Laboratory Test Values - Prolactin

New onset (\> 1 x upper limit of normal {ULN}, \> 2 x ULN, 3 X ULN) prolactin means a participant who attains a categorical change during treatment phase but not at baseline. Only those categories with at least one participant with event are reported.

Time frame: Week 12

Population: SP: Participants who received at least 1 dose of study drug (brexpiprazole or placebo). Overall number of participants analyzed = number of participants with data available for analysis for this outcome measure.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potential Clinical Relevant Laboratory Test Values - ProlactinProlactin: >1 x ULN37 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potential Clinical Relevant Laboratory Test Values - ProlactinProlactin: >2 x ULN1 Participants
PlaceboNumber of Participants With Potential Clinical Relevant Laboratory Test Values - ProlactinProlactin: >1 x ULN4 Participants
PlaceboNumber of Participants With Potential Clinical Relevant Laboratory Test Values - ProlactinProlactin: >2 x ULN1 Participants
Secondary

Number of Participants With Potentially Clinically Relevant Abnormalities in 12-Lead Electrocardiogram (ECG) Parameters

ECG parameters analyzed included rhythm, conduction and ST/T morphology. Potential clinical relevance criterion: Rhythm- Supraventricular Premature Beat: not present at baseline and present post baseline, Ventricular Premature Beat: not present at baseline and present post baseline, Conduction- Right Bundle Branch Block: not present at baseline and present post baseline, ST/T Morphology- Symmetrical (Sym) T-Wave Inversion: not present at baseline and present post baseline. Only those categories with at least one participant with event are reported.

Time frame: Week 12

Population: SP: Participants who received at least 1 dose of study drug (brexpiprazole or placebo). Overall number of participants analyzed= number of participants with data available for analyses for this outcome measure. Number analyzed = total number of participants with at least one post-baseline numeric result for the given ECG parameter.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Abnormalities in 12-Lead Electrocardiogram (ECG) ParametersRhythm: Supraventricular Premature Beat0 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Abnormalities in 12-Lead Electrocardiogram (ECG) ParametersRhythm: Ventricular Premature Beat1 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Abnormalities in 12-Lead Electrocardiogram (ECG) ParametersConduction: Right Bundle Branch Block1 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Abnormalities in 12-Lead Electrocardiogram (ECG) ParametersST/T Morphology: Symmetrical T-Wave Inversion0 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Abnormalities in 12-Lead Electrocardiogram (ECG) ParametersST/T Morphology: Symmetrical T-Wave Inversion1 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Abnormalities in 12-Lead Electrocardiogram (ECG) ParametersRhythm: Supraventricular Premature Beat1 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Abnormalities in 12-Lead Electrocardiogram (ECG) ParametersConduction: Right Bundle Branch Block0 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Abnormalities in 12-Lead Electrocardiogram (ECG) ParametersRhythm: Ventricular Premature Beat0 Participants
Secondary

Number of Participants With Potentially Clinically Relevant Abnormalities in Vital Signs

Vital Signs included orthostatic hypotension, heart rate (HR), systolic and diastolic blood pressure (bp), and weight. Potential clinical relevance criterion: Orthostatic Hypotension:\>= 20 millimeters of mercury (mmhg) decrease in systolic bp and \>= 25 beats per minute (bpm) increase in HR from supine to standing; HR Standing (bpm):\< 50 and decrease \>= 15,\> 120 and increase \>= 15; HR Supine (bpm): \< 50 and decrease \>= 15,\>120 and increase \>= 15; Systolic BP Standing (mmhg):\< 90 and decrease \>=20,\> 180 and increase \>= 20; Systolic BP Supine (mmhg):\< 90 and decrease \>= 20, \>180 and increase \>= 20; Diastolic BP Standing (mmHg): \< 50 and decrease \>= 15,\> 105 and increase \>= 15; Diastolic BP Supine (mmHg):\< 50 and decrease \>= 15, \> 105 and increase \>= 15; Weight (kilograms\[kg\]): Decrease or increase \>= 7%. Only those categories with at least one participant with event are reported.

Time frame: From first dose of study drug up to Week 12

Population: SP: Participants who received at least 1 dose of study drug (brexpiprazole or placebo). Overall number of participants analyzed = number of participants with data available for analyses for this outcome measure.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsHeart Rate Supine, Low1 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsSystolic Blood Pressure Supine, Low1 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsHeart Rate Standing, High2 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsWeight, Increase5 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsSystolic Blood Pressure Standing, Low1 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsWeight, Decrease25 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsOrthostatic Hypotension: Low0 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsWeight, Decrease12 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsOrthostatic Hypotension: Low1 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsHeart Rate Standing, High0 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsHeart Rate Supine, Low1 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsSystolic Blood Pressure Standing, Low1 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsSystolic Blood Pressure Supine, Low0 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Abnormalities in Vital SignsWeight, Increase3 Participants
Secondary

Number of Participants With Potentially Clinically Relevant Laboratory Test Values

Laboratory parameters included hematology(Hem), serum chemistry(Che) and urinalysis(Uri). Criterion:Che-Alkaline Phosphatase (Units/liter \[U/L\]):≥3 x ULN, Aspartate Aminotransferase (U/L):≥3 x ULN,Bilirubin (mg/deciliter\[dL\]):≥2.0,Cholesterol(Cho);Cho,fasting(mg/dl):≥240,Creatine Kinase(U/L):≥3 x ULN, Creatinine(mg/dL):≥2.0,Glucose (Glu);Glu,fasting(mg/dL):100,High Density Lipoprotein (HDL) Cho (mg/dL):Male (M) \< 40or Female (F) \<50, Low Density Lipoprotein (LDL) Cho(mg/dL):≥160,Prolactin (nanograms/milliliter \[ng/mL\]):\>1 x ULN,Triglyceride (mg/dL):≥150,Urate(mg/dL): M ≥10.5 or F ≥8.5,Urea Nitrogen (mg/dL):≥30,Hem-Eosinophils (Eosi) (10\^9 L):≥10%,Hematocrit (%): M ≤37% and ≥3 percentage (per) point decrease from baseline or F≤32% and ≥3per point decrease from baseline, Hemaglobin(gram per deciliter \[g/dL\]):M ≤11.5 or F ≤9.5,Leukocytes(10\^9/L):≤2.8 x10\^3/uL,≤16.0 x10\^3/uL,Platelets(10\^9/L):≤75 x10\^3/ uL,≥700 x10\^3/uL,Uri-Glu,urine; Protein,urine:Increase of ≥2U.

Time frame: From first dose of study drug up to Week 12

Population: SP: Participants who received at least 1 dose of study drug (brexpiprazole or placebo). Only those categories with at least one participant with event are reported. Overall number of participants analyzed = number of participants with data available for analysis for this outcome measure. Number analyzed = total number of participants with at least one post-baseline numeric result for given laboratory parameter.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Alkaline Phosphatase, High1 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Aspartate Aminotransferase, High1 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Bilirubin, High0 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Cho, High2 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Cho Fasting, High13 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Creatine Kinase, High4 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Creatinine, High1 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Glu Fasting, High29 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: HDL Cho, Fasting, Low46 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Low LDL Cho, High3 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: LDL Cholesterol, Fasting, High11 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Prolactin, High41 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Triglyceride, Fasting, High35 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Urate, High1 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Urea Nitrogen, High2 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesHem: Eosi/Leukocytes Ratio, High4 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesHem: Hematocrit, Low2 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesHem: Hemoglobin, Low2 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesHematology: Leukocytes, Low0 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesHem: Leukocytes, High2 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesHem: Platelets, Low0 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesUri: Glu, Urine, High0 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesUri: Protein, Urine, High1 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Prolactin, High7 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Alkaline Phosphatase, High0 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesHem: Hemoglobin, Low2 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Aspartate Aminotransferase, High0 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Triglyceride, Fasting, High25 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Bilirubin, High2 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesHem: Platelets, Low2 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Cho, High4 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Urate, High0 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Cho Fasting, High7 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesHematology: Leukocytes, Low1 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Creatine Kinase, High3 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Urea Nitrogen, High0 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Creatinine, High0 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesUri: Protein, Urine, High0 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Glu Fasting, High30 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesHem: Eosi/Leukocytes Ratio, High2 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: HDL Cho, Fasting, Low42 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesHem: Leukocytes, High0 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: Low LDL Cho, High4 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesHem: Hematocrit, Low4 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesChe: LDL Cholesterol, Fasting, High8 Participants
PlaceboNumber of Participants With Potentially Clinically Relevant Laboratory Test ValuesUri: Glu, Urine, High1 Participants
Secondary

Number of Participants With Suicidal Behavior and Suicidal Ideation As Assessed by Columbia-Suicide Severity Rating Scale (C-SSRS)

Suicidality was monitored using the C-SSRS. Suicidality was defined as at least one occurrence of suicidal ideation (including wish to be dead, non-specific suicidal thought, suicidal ideation-no intent, ideation with intent, no plan, ideation with plan/intent) or at least one occurrence of suicidal behavior (actual attempt, non-suicidal self-injurious behavior, interrupted attempt, aborted attempt, preparatory acts/behavior, suicidal behavior) for the assessment period.

Time frame: Baseline (Day 0) to Week 12

Population: Safety population included those participants who received at least 1 dose of study drug (brexpiprazole or placebo).

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Suicidal Behavior and Suicidal Ideation As Assessed by Columbia-Suicide Severity Rating Scale (C-SSRS)Suicidal Behavior42 Participants
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Suicidal Behavior and Suicidal Ideation As Assessed by Columbia-Suicide Severity Rating Scale (C-SSRS)Suicidal Ideation78 Participants
PlaceboNumber of Participants With Suicidal Behavior and Suicidal Ideation As Assessed by Columbia-Suicide Severity Rating Scale (C-SSRS)Suicidal Behavior29 Participants
PlaceboNumber of Participants With Suicidal Behavior and Suicidal Ideation As Assessed by Columbia-Suicide Severity Rating Scale (C-SSRS)Suicidal Ideation70 Participants
Secondary

Number of Participants With Treatment Emergent Adverse Events (TEAEs)

An adverse event (AE) is any untoward medical occurrence in a clinical trial participant administered an IMP and which does not necessarily have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product. A TEAE is defined as an AE that started after start of study treatment.

Time frame: From Baseline (Day 0) to 21 days after last dose (Up to Week 15)

Population: Safety population (SP) included those participants who received at least 1 dose of study drug (brexpiprazole or placebo).

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Brexpiprazole 2-3 Milligrams Per DayNumber of Participants With Treatment Emergent Adverse Events (TEAEs)95 Participants
PlaceboNumber of Participants With Treatment Emergent Adverse Events (TEAEs)79 Participants
Secondary

Patient's Global Impression of Change (PGI-C) Scale Score

A 7-point single-item self-report scale depicting a participant's rating of overall change in their condition since starting trial medication. Participants answered the question: Since starting study medication, how much have their symptoms of Borderline Personality Disorder changed? with a score ranging from 1 to 7 where 1 denoted very much improved and 7 denoted very much worse.

Time frame: Weeks 2, 4, 6, 8,10 and 12

Population: FAS for enriched participants is a subset of randomized population who met pre-defined criteria and who received at least 1 valid post-randomization efficacy evaluation for ZAN-BPD total score. Overall number of participants analyzed = number of participants with data available for analysis for this outcome measure. Number analyzed = number of participants with data available for analyses at the specified time point.

ArmMeasureGroupValue (MEAN)Dispersion
Brexpiprazole 2-3 Milligrams Per DayPatient's Global Impression of Change (PGI-C) Scale ScoreWeek 82.94 score on a scaleStandard Deviation 1.1
Brexpiprazole 2-3 Milligrams Per DayPatient's Global Impression of Change (PGI-C) Scale ScoreWeek 43.23 score on a scaleStandard Deviation 1.26
Brexpiprazole 2-3 Milligrams Per DayPatient's Global Impression of Change (PGI-C) Scale ScoreWeek 102.89 score on a scaleStandard Deviation 1.26
Brexpiprazole 2-3 Milligrams Per DayPatient's Global Impression of Change (PGI-C) Scale ScoreWeek 62.94 score on a scaleStandard Deviation 1.14
Brexpiprazole 2-3 Milligrams Per DayPatient's Global Impression of Change (PGI-C) Scale ScoreWeek 122.88 score on a scaleStandard Deviation 1.19
Brexpiprazole 2-3 Milligrams Per DayPatient's Global Impression of Change (PGI-C) Scale ScoreWeek 23.38 score on a scaleStandard Deviation 0.89
PlaceboPatient's Global Impression of Change (PGI-C) Scale ScoreWeek 122.96 score on a scaleStandard Deviation 1.14
PlaceboPatient's Global Impression of Change (PGI-C) Scale ScoreWeek 23.30 score on a scaleStandard Deviation 0.93
PlaceboPatient's Global Impression of Change (PGI-C) Scale ScoreWeek 63.15 score on a scaleStandard Deviation 1.11
PlaceboPatient's Global Impression of Change (PGI-C) Scale ScoreWeek 83.11 score on a scaleStandard Deviation 1.12
PlaceboPatient's Global Impression of Change (PGI-C) Scale ScoreWeek 102.97 score on a scaleStandard Deviation 1.2
PlaceboPatient's Global Impression of Change (PGI-C) Scale ScoreWeek 43.25 score on a scaleStandard Deviation 1.22
Comparison: Week 8p-value: 0.192295% CI: [-0.5, 0.1]Cochran-Mantel-Haenszel
Comparison: Week 10p-value: 0.648895% CI: [-0.4, 0.25]Cochran-Mantel-Haenszel
Comparison: Week 2p-value: 0.622595% CI: [-0.18, 0.3]Cochran-Mantel-Haenszel
Comparison: Week 4p-value: 0.914595% CI: [-0.35, 0.31]Cochran-Mantel-Haenszel
Comparison: Week 6p-value: 0.153595% CI: [-0.52, 0.08]Cochran-Mantel-Haenszel
Comparison: Week 12p-value: 0.599295% CI: [-0.4, 0.23]Cochran-Mantel-Haenszel

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026