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Ralmitaront

Phase 1

Schizophrenia | Small molecule | Psychiatry |Roche Holding AG|Last Updated: Mar 17, 2025

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLED
Total Trials1
Total Enrollment35

FDA Designations

No designations recorded

Clinical trial landscape

Ralmitaront · 1 trial · 1 indication

Phase 1 1
NCT0688032818F-Dihydroxyphenylalanine (DOPA) Positron Emission Tomography (PET) Study to Explore Dopamine Synthesis Capacity in the Whole Striatum After 2 Weeks of Treatment With Ralmitaront or Placebo in Participants With SchizophreniaSchizophrenia
COMPLETED35 Analytics
PHASE1COMPLETED
18F-Dihydroxyphenylalanine (DOPA) Positron Emission Tomography (PET) Study to Explore Dopamine Synthesis Capacity in the Whole Striatum After 2 Weeks of Treatment With Ralmitaront or Placebo in Participants With Schizophrenia
SchizophreniaUnlock trial analytics

Study Endpoints

Primary Endpoints

Influx Rate Constant (Ki) Value of [18F]-DOPA in the Whole Striatum, as Measured Using [18F]-DOPA PET Imaging
Baseline, and on Days 13-14 and Days 34-35

Secondary Endpoints

Bilateral Ventral Striatum Eigenvariates From the T-Contrast of Rewarded vs. Non-reward Expectation During the Monetary Incentive Delay (MID) Task, as Assessed Using fMRI
Baseline, and on Days 13-14 and Days 34-35
Percentage of High Effort Choices Under Deterministic Reward Condition for High Reward in the Effort-Choice Benefit Task
Baseline, and on Days 13-14 and Days 34-35
Mean Cerebral Blood Flow (CBF) in Different Brain Regions, as Measured by fMRI
Baseline, and on Days 13-14 and Days 34-35
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelCROSSOVER
PurposeBASIC_SCIENCE

Treatment Arms

ArmTypeDescription
Sequence 1: Ralmitaront then PlaceboEXPERIMENTALParticipants were given a daily dose of Ralmitaront during the treatment period of 14 days, followed by a 7 day washout period, and then a daily dose for 14 days with the placebo.
Sequence 2: Placebo then RalmitarontEXPERIMENTALParticipants were given a daily dose of the placebo during the 14 day period, followed by a 7 day washout, and then a daily dose of Ralmitaront for 14 days.

Interventions

NameTypeDescription
RalmitarontDRUGParticipants were given a once 150 mg daily dose of Ralmitaront orally during the 14 day treatment period.
Radiolabeled PET tracer [18F]-DOPAOTHER\[18 F\]-DOPA solution for injection is manufactured by the PET imaging centers according to specifications established for the tracer at the site. The injection will happen prior to the scan being done and will last for approximately 30 seconds.
PlaceboDRUGParticipants were given a daily dose of the placebo during the 14 day treatment period.
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Eligibility Criteria

Age Range18 Years to 50 Years
SexMALE
Healthy VolunteersNo
Study Sites4

Inclusion Criteria: * Male patients with non-acute schizophrenia defined by DSM-5 diagnosis of schizophrenia as established by the mini-international neuropsychiatric interview (MINI) * Medically stable over 1 month and psychiatrically stable for at least 3 months prior to the screening visit * Pat...

Countries:United States
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Frequently asked questions about Ralmitaront

What is Ralmitaront used for in schizophrenia?

Ralmitaront is an investigational small molecule being studied for the treatment of schizophrenia. It is currently in Phase 1 clinical development and is not approved by the FDA. A completed Phase 1 trial evaluated its effects on dopamine synthesis capacity in the striatum of participants with schizophrenia.

Who makes Ralmitaront?

Ralmitaront is being developed by Roche Holding AG, which trades under the ticker RHHBY. The company is conducting clinical research on this investigational small molecule for schizophrenia, with the drug currently in Phase 1 development.

What phase is Ralmitaront in?

Ralmitaront is in Phase 1 clinical development. It is an investigational drug and has not been approved by the FDA. One Phase 1 trial has been completed, and the drug remains under investigation for the treatment of schizophrenia.

What clinical trials is Ralmitaront in?

Ralmitaront has one completed Phase 1 clinical trial, identified as NCT06880328. This study was a randomized, double-blind, controlled trial that enrolled 35 male participants with schizophrenia in the United States. It used 18F-DOPA PET imaging to explore dopamine synthesis capacity in the striatum after two weeks of treatment.

How does Ralmitaront work?

Ralmitaront is a small molecule being studied for schizophrenia. The completed Phase 1 trial examined its effect on dopamine synthesis capacity in the whole striatum, suggesting the drug may influence dopaminergic activity. However, its specific molecular target has not been disclosed in available information.