Recent Updates
Recently added Catalysts

Valemetostat

Phase 1/2

Metastatic Castration-resistant Prostate Cancer | Small molecule | Other |Bayer AG|Trials Updated: Oct 26, 2026

Valemetostat development status

Highest phase Phase 1/2 run by Celgene (NCT03930953)
Phase scored for BAYRYPhase 1
Registered trials 2 across 2 sponsors since Apr 2019

Valemetostat target and mechanism

ModalitySmall molecule

Also known as DS-3201

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

CONTROLLED
Total Trials1
Total Enrollment60

FDA Designations

No designations recorded

Valemetostat clinical trials

Valemetostat · 1 trial · 1 indication

Phase 1 1
NCT07244341A Study of Valemetostat (DS-3201b) in Combination With Darolutamide in Metastatic Castration Resistant Prostate Cancer (mCRPC)Metastatic Castration-resistant Prostate Cancer
RECRUITING60 Analytics
PHASE1RECRUITING
A Study of Valemetostat (DS-3201b) in Combination With Darolutamide in Metastatic Castration Resistant Prostate Cancer (mCRPC)
Metastatic Castration-resistant Prostate CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Part 1: Number of participants with Dose-Limiting Toxicities (DLTs)
Day 1 up to Day 28

A DLT is defined as any Treatment Emergent Adverse Event (TEAE) not attributable to disease or disease-related processes, environmental factors, unrelated trauma, etc, that occurs during the DLT evaluation period (Day 1 to Day 28) and is Grade ≥3.

Part 1 and 2: Number of Participants Experiencing a Treatment Emergent Adverse Event (TEAE)
From Screening up to approximately 5 years

TEAEs are defined as those Adverse Events (AEs) with start or worsening date during the on-treatment period (from the first dose date of trial intervention to 30 days after the last dose date of trial intervention).

Secondary Endpoints

Prostate-Specific Antigen (PSA) 50 Response Rate
From Screening up to approximately 5 years
Prostate-Specific Antigen (PSA) 90 Response Rate
From Screening up to approximately 5 years
Prostate-Specific Antigen (PSA) Nadir Response Rate
From Screening up to approximately 5 years
Unlock Study Endpoints

Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Part 1 (Dose Escalation)EXPERIMENTALParticipants will receive valemetostat at escalating doses in combination with darolutamide.
Part 2 (Dose Expansion)EXPERIMENTALParticipants will receive valemetostat at 2 or more dose levels in combination with darolutamide.

Interventions

NameTypeDescription
ValemetostatDRUGDose Escalation Part: Valemetostat will be administered at escalating doses. Dose Expansion Part: Valemetostat will be administered at 2 or more dose levels.
DarolutamideDRUGDose Escalation Part: Darolutamide will be administered at a standard dose. Dose Expansion Part: Darolutamide will be administered at a standard dose.
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to N/A
SexMALE
Healthy VolunteersNo
Study Sites29

Key Inclusion Criteria: The clinical site will screen for the full inclusion criteria per protocol. 1. Adult males ≥18 years of age at the time the ICF is signed (Please follow local regulatory requirements if the legal age of consent for trial participation is \>18 years old). 2. Histologically c...

Countries:United StatesAustraliaChinaFranceIrelandJapanSpain
Unlock Eligibility Criteria