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JNJ-55308942 High Dose

Phase 2

Bipolar Disorder | Small molecule | Psychiatry |Johnson & Johnson|Trials Updated: Jul 11, 2025

JNJ-55308942 High Dose development status

Highest phase Phase 2
Registered trials 1 across 1 sponsor since Jun 2018

JNJ-55308942 High Dose target and mechanism

ModalitySmall molecule

Also known as JNJ-55308942

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment116

FDA Designations

No designations recorded

JNJ-55308942 High Dose clinical trials

JNJ-55308942 High Dose · 1 trial · 1 indication

Phase 2 1
NCT05328297A Study of JNJ-55308942 in the Treatment of Bipolar DepressionBipolar Disorder
COMPLETED116 Analytics
PHASE2COMPLETED
A Study of JNJ-55308942 in the Treatment of Bipolar Depression
Bipolar DisorderUnlock trial analytics

Study Endpoints

Primary Endpoints

Change From Baseline in Montgomery-Asberg Depression Rating Scale (MADRS) Total Score up to Week 6
From Baseline (Day 1) up to Week 6

Change from baseline in MADRS total score up to Week 6 were reported. MADRS was a clinician-rated scale designed to measure depression severity and detect changes due to antidepressant (AD) treatment. The MADRS evaluated reported sadness, apparent sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. The scale consisted of 10 items, each of which was scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms),with higher score indicating a more severe condition. The MADRS total score was the sum of scores from individual question items and it ranged from 0 to 60, with higher scores indicated more severe conditions. Negative change in MADRS total score indicated improvement.

Secondary Endpoints

Change From Baseline in Snaith-Hamilton Pleasure Scale (SHAPS) Total Score up to Week 6
From Baseline (Day 1) up to Week 6
Change From Baseline in MADRS Total Score up to Week 6 (Genetic Subgroup Analysis)
From Baseline (Day 1) up to Week 6
Change From Baseline in MADRS Total Score up to Week 6 (Diagnosis Subgroup Analysis)
From Baseline (Day 1) up to Week 6
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
JNJ-55308942EXPERIMENTALParticipants will receive a JNJ-55308942 capsule once daily for 6 weeks.
PlaceboPLACEBO_COMPARATORParticipants will receive a matching placebo capsule once daily for 6 weeks.

Interventions

NameTypeDescription
JNJ-55308942DRUGJNJ-55308942 capsules will be administered orally.
PlaceboDRUGMatching placebo capsules will be administered orally.
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Eligibility Criteria

Age Range18 Years to 64 Years
SexALL
Healthy VolunteersNo
Study Sites44

Inclusion Criteria: * Have a primary diagnostic and statistical manual of mental disorders (5th edition) (DSM-5) diagnosis of bipolar disorder (BD) (Type I or II) without current psychotic features, as confirmed by the mini international neuropsychiatric interview (MINI) * Medically stable on the b...

Countries:United StatesCanadaPolandSpain
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Frequently asked questions about JNJ-55308942 High Dose

What is JNJ-55308942 high dose used for?

JNJ-55308942 high dose is being studied for the treatment of bipolar depression, a depressive phase of bipolar disorder. It is an investigational small molecule developed by Johnson & Johnson and has been evaluated in a Phase 2 clinical trial in adults with bipolar disorder.

Who makes JNJ-55308942?

JNJ-55308942 is developed by Johnson & Johnson, which trades under the ticker JNJ. The company sponsored a Phase 2 study of the compound in bipolar depression across sites in the United States, Canada, Poland, and Spain.

What phase is JNJ-55308942 in?

JNJ-55308942 is in Phase 2 development. A Phase 2 trial in bipolar depression has been completed, and the compound remains investigational rather than approved for any indication.

What clinical trial has studied JNJ-55308942?

JNJ-55308942 was evaluated in NCT05328297, titled A Study of JNJ-55308942 in the Treatment of Bipolar Depression. The Phase 2 trial enrolled 116 adults aged 18 and older, was randomized, double blind, and placebo controlled, and has been completed.