A Study to Evaluate the Efficacy and Safety of KarXT for the Treatment of Manic Episodes in Bipolar-I Disorder (BALSAM-2)
A Phase 3, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Efficacy and Safety of KarXT for the Treatment of Manic Episodes in Bipolar-I Disorder (BALSAM-2)
3 other identifiers
interventional
274
10 countries
78
Brief Summary
This is a Phase 3, randomized, double-blind, placebo-controlled, multicenter, inpatient study in participants with bipolar disorder experiencing an acute episode of mania or mania with mixed features. The primary objective of the study is to evaluate the efficacy of KarXT compared to placebo in treating symptoms of mania during a 3-week inpatient period. The duration of the study including screening, the double-blind inpatient treatment period and safety-follow-up is no more than seven weeks.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_3
Started Jun 2025
78 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
April 23, 2025
CompletedFirst Posted
Study publicly available on registry
April 30, 2025
CompletedStudy Start
First participant enrolled
June 13, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
November 2, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
November 2, 2026
June 4, 2026
June 1, 2026
1.4 years
April 23, 2025
June 3, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Change from baseline in Young Mania Rating Scale (YMRS) score
The YMRS comprised of 11 items that assess the severity of manic symptoms. All items are given a severity rating, with 4 items graded from 0 to 8 (irritability, speech, thought content, and disruptive/aggressive behavior), and the remaining 7 items are graded from 0 to 4 points. The highest score obtainable on the YMRS is 60 and the higher the number the greater the number of symptoms and/or the greater their severity.
At week 3
Secondary Outcomes (3)
Change from baseline in Clinical Global Impressions-Bipolar (CGI-BP)
At week 3
Occurrence of response based on ≥ 50% decrease from baseline in YMRS score or total score
At week 3
Occurrence of response based on change from baseline ≥ 1 in CGI-BP
At week 3
Study Arms (2)
KarXT
EXPERIMENTALFlexible dosing
Placebo
PLACEBO COMPARATORInterventions
Eligibility Criteria
You may qualify if:
- Participants must have a primary diagnosis of Bipolar-I disorder established by a comprehensive psychiatric evaluation.
- Participants must be experiencing an acute episode or relapse of mania or mania with mixed features (≤ 3 weeks).
- Participants must require hospitalization for the acute exacerbation or relapse of mania.
- Participants must have all psychotropic medications washed out in no more than 14 days prior to the first dose of the study drug.
- Participants must have a Young Mania Rating Scale (YMRS) score of ≥ 20 at Screening and at Baseline.
- Participants must have a Clinical Global Impressions-Bipolar (CGI-BP) ≥ 4 at Screening and at Baseline.
You may not qualify if:
- Participants must not have any primary Diagnostic and Statistical Manual of Mental Disorders (5th Edition, Text Revision) (DSM-5-TR) disorder, other than BP-I with mania or mania with mixed features within 12 months before screening, including BP-I with depression (for previous 3 months only), BP-II disorder, borderline personality disorder, major depressive disorder, and primary psychotic disorder, with the exception of mild anxiety disorders.
- Participants must not have a primary diagnosis of BP-I with rapid cycling (≥ 4 distinct mood episodes in one year).
- Participants must not have a DSM-5-TR diagnosis of moderate to severe substance use disorder (except tobacco use disorder) within the 12 months before screening, or current use as determined by urine toxicology screen or alcohol test.
- Participants must not be at risk for suicidal behavior at screening or the baseline visit as determined by the Investigator's clinical assessment and the Columbia-Suicide Severity Rating Scale (C-SSRS).
- Participants must not have cirrhosis, liver cancer, clinically significant liver disease based on the liver function test results.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (78)
Pillar Clinical Research- Little Rock
Little Rock, Arkansas, 72204, United States
Woodland Research Northwest
Rogers, Arkansas, 72758, United States
Proscience Research Group
Culver City, California, 90230, United States
Clinical Innovations, Inc. dba CITrials
Riverside, California, 92506, United States
Collaborative Neuroscience Research, LLC
Torrance, California, 90502, United States
Local Institution - 0036
Hialeah Gardens, Florida, 33016, United States
Behavioral Clinical Research
Hollywood, Florida, 33021, United States
LCC Medical Research Institute
Miami, Florida, 33126, United States
Innovative Clinical Research, Inc.
Miami Lakes, Florida, 33016, United States
South Florida Research Phase I-IV
Miami Springs, Florida, 33166, United States
Local Institution - 0019
Tampa, Florida, 33618, United States
Health Synergy Clinical Research
West Palm Beach, Florida, 33407, United States
Atlanta Center for Medical Research
Atlanta, Georgia, 30331, United States
CenExel iResearch, LLC
Decatur, Georgia, 30030, United States
Local Institution - 0020
Chicago, Illinois, 60640, United States
CBH Health
Gaithersburg, Maryland, 20877, United States
Precise Research Centers
Flowood, Mississippi, 39232, United States
Arch Clinical Trials
St Louis, Missouri, 63141, United States
Local Institution - 0076
North Las Vegas, Nevada, 89030, United States
Hassman Research Institute Marlton Site
Marlton, New Jersey, 08053, United States
Local Institution - 0031
Marlton, New Jersey, 08053, United States
Local Institution - 0075
Charlotte, North Carolina, 28211, United States
University of Cincinnati Medical Center
Cincinnati, Ohio, 45219, United States
Neuro-Behavioral Clinical Research
North Canton, Ohio, 44720, United States
InSite Clinical Research
DeSoto, Texas, 75115, United States
Local Institution - 0028
Houston, Texas, 77021, United States
Local Institution - 0095
Richardson, Texas, 75080, United States
Pillar Clinical Research - Richardson
Richardson, Texas, 75080, United States
Local Institution - 0009
Zagreb, City of Zagreb, 10090, Croatia
Klinika za psihijatriju "Vrapče"
Zagreb, 10090, Croatia
Klinika za psihijatriju "Vrapče"
Zagreb, 10090, Croatia
Klinika za psihijatriju "Vrapče"
Zagreb, 10090, Croatia
Psihijatrijska bolnica "Sveti Ivan"
Zagreb, 10090, Croatia
Local Institution - 0065
Vadodara, Gujarat, 390021, India
Local Institution - 0082
Belagavi, Karnataka, 590010, India
Chethana Center for Neuropsychiatry
Kozhikode, Kerala, 673009, India
Local Institution - 0051
Ludhiana, Punjab, 141001, India
Asha Hospital - Hyderabad
Hyderabad, Telangana, 500034, India
Local Institution - 0055
Hyderabad, Telangana, 500082, India
Nil Ratan Sircar Medical College and Hospital
Kolkata, West Bengal, 700014, India
Local Institution - 0096
Kolkata, West Bengal, 700025, India
Shalvata Mental Health Center
Hod HaSharon, Central District, 4534708, Israel
Ness Ziona Mental Health Center
Ness Ziona, Central District, 7410001, Israel
Local Institution - 0058
Petah Tikva, Central District, 4910002, Israel
Sheba Medical Center
Ramat Gan, Central District, 5265601, Israel
Be'er Sheva Mental Health Center
Beersheba, Southern District, 8461144, Israel
Kfar Shaul Mental Health Center
Jerusalem, 9546105, Israel
Local Institution - 0001
Milan, Lombardy, 20122, Italy
Local Institution - 0056
Pisa, Tuscany, 56126, Italy
Local Institution - 0007
Siena, Tuscany, 53100, Italy
Local Institution - 0041
Ancona, 60126, Italy
Local Institution - 0040
Genova, 16132, Italy
Prof. Dr. Alexandru Obregia Psychiatry Hospital
Bucharest, Bucharest, 041914, Romania
Prof. Dr. Alexandru Obregia Psychiatry Hospital
Bucharest, Bucharest, 041914, Romania
Prof. Dr. Alexandru Obregia Psychiatry Hospital
Bucharest, Bucharest, 041914, Romania
Prof. Dr. Alexandru Obregia Psychiatry Hospital
Bucharest, Bucharest, 041914, Romania
Prof. Dr. Alexandru Obregia Psychiatry Hospital
Bucharest, Bucharest, 041914, Romania
Prof. Dr. Alexandru Obregia Psychiatry Hospital
Bucharest, Bucharest, 041914, Romania
Centrul de Evaluare și Tratament a Toxicodependenței pentru Tineri Sf.Stelian
Bucharest, 060222, Romania
Spitalul Universitar de Urgenta Militar Central Dr. Carol Davila
Bucharest, 0, Romania
Local Institution - 0047
Iași, 700282, Romania
Spitalul de Psihiatrie și Neurologie Brașov
Sanpetru /Brasov, 507190, Romania
Local Institution - 0071
Košice, Košice Region, 040 01, Slovakia
Local Institution - 0073
Košice, Košice Region, 040 01, Slovakia
Local Institution - 0072
Vranov nad Topľou, Presov, 093 01, Slovakia
Hospital Universitari Vall d'Hebron
Barcelona, Barcelona [Barcelona], 08035, Spain
Osi Bilbao-Basurto
Bilbao, Basque Country, 48013, Spain
Hospital Clínic de Barcelona
Barcelona, Catalunya [Cataluña], 08036, Spain
Nacka Local Hospital
Nacka, Stockholms Län [se-01], 131 45, Sweden
Local Institution - 0067
Uppsala, Uppsala Län [se-03], 751 85, Sweden
Local Institution - 0070
Gothenburg, Västra Götalands Län [se-14], 413 45, Sweden
Local Institution - 0088
Dnipro, Dnipropetrovsk Oblast, 49115, Ukraine
Local Institution - 0092
Hlevakha, Kyivska Oblast, 08631, Ukraine
Local Institution - 0093
Oleksandrivka, Odesa Oblast, 67513, Ukraine
Local Institution - 0085
Vinnytsia, Vinnytsia Oblast, 21037, Ukraine
Local Institution - 0084
Kropyvnytskyi, 25491, Ukraine
Local Institution - 0094
Odesa, 65006, Ukraine
Local Institution - 0090
Poltava, 36013, Ukraine
Related Links
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Bristol-Myers Squibb
Bristol-Myers Squibb
Central Study Contacts
BMS Clinical Trials Contact Center www.BMSClinicalTrials.com
CONTACT
First line of the email MUST contain NCT # and Site #.
CONTACT
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
April 23, 2025
First Posted
April 30, 2025
Study Start
June 13, 2025
Primary Completion (Estimated)
November 2, 2026
Study Completion (Estimated)
November 2, 2026
Last Updated
June 4, 2026
Record last verified: 2026-06
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- STUDY PROTOCOL, SAP, CSR
- Time Frame
- See Plan Description
- Access Criteria
- See Plan Description
BMS will provide access to individual anonymized participant data upon request from qualified researchers, and subject to certain criteria. Additional information regarding Bristol Myer Squibb's data sharing policy and process can be found at https://www.bms.com/researchers-and-partners/clinical-trials-and-research.html