RecruitingPhase 1Phase 2NCT07190300

TulmiSTAR-02: A Phase I/II Open-label Study of Tulmimetostat in Combination With Darolutamide vs. Darolutamide, and Tulmimetostat With Abiraterone in Patients With Metastatic Hormone-sensitive Prostate Cancer (mHSPC)

TulmiSTAR-02: A Two-part Phase I Dose Escalation Study of Tulmimetostat (DZR123) in Combination With Darolutamide or Abiraterone Followed by Open-label, Randomized, Phase II Dose Expansion Study to Assess the Safety and Efficacy of Tulmimetostat in Combination With Darolutamide Versus Darolutamide Alone in Patients With Metastatic Hormone-sensitive Prostate Cancer


Sponsor

Novartis Pharmaceuticals

Enrollment

155 participants

Start Date

Jan 13, 2026

Study Type

INTERVENTIONAL

Conditions

Summary

The purpose of the study is to evaluate the safety, tolerability, and efficacy of the two different treatment combinations of tulmimetostat in participants with de novo or recurrent Metastatic Hormone-Sensitive Prostate Cancer (mHSPC).


Eligibility

Sex: MALEMin Age: 18 Years

Plain Language Summary

Simplified for easier understanding

This study is testing combinations of drugs — including tulmimetostat with darolutamide and tulmimetostat with abiraterone — for men with prostate cancer that has spread and is still sensitive to hormone therapy (called hormone-sensitive prostate cancer). **You may be eligible if...** - You are a man 18 or older with metastatic prostate cancer that responds to hormone therapy - You are already on hormone-blocking therapy (ADT) started at least 1 month but no more than 24 months ago - Your testosterone levels are at castrate levels (very low) - You are well enough to participate (ECOG 0–2) - You have not progressed on prior taxane chemotherapy **You may NOT be eligible if...** - Your prostate cancer has small cell or neuroendocrine features - You are currently on darolutamide (you may switch, but ongoing use is not eligible in Phase II) - You have had more than 6 months of prior ARPI therapy for metastatic disease (Phase II) - You do not have adequate blood counts or organ function Talk to your doctor to see if this trial is right for you.

This summary was AI-generated to explain the trial in plain language. It is not medical advice. Always discuss eligibility with your doctor before enrolling in a clinical trial.

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Interventions

DRUGTulmimetostat

Doses of tulmimetostat beyond DL1 once a day (QD) will be opened depending on outcome of Dose Escalation Meetings (DEM(s))

DRUGDarolutamide

600 mg is administered orally BID

DRUGAbiraterone

abiraterone 1000 mg is administered orally QD


Locations(22)

Wichita Urology Group PA

Wichita, Kansas, United States

Duke University Medical Center

Durham, North Carolina, United States

Carolina Urologic Research Center

Myrtle Beach, South Carolina, United States

Huntsman Cancer Institute

Salt Lake City, Utah, United States

Novartis Investigative Site

Camperdown, New South Wales, Australia

Novartis Investigative Site

Wollongong, New South Wales, Australia

Novartis Investigative Site

Guangzhou, China

Novartis Investigative Site

Créteil, France

Novartis Investigative Site

Lille, France

Novartis Investigative Site

Nantes, France

Novartis Investigative Site

Essen, Germany

Novartis Investigative Site

Hong Kong, Hong Kong

Novartis Investigative Site

Budapest, Hungary

Novartis Investigative Site

Szeged, Hungary

Novartis Investigative Site

Rozzano, MI, Italy

Novartis Investigative Site

Verona, VR, Italy

Novartis Investigative Site

Seoul, South Korea

Novartis Investigative Site

Seoul, South Korea

Novartis Investigative Site

Majadahonda, Madrid, Spain

Novartis Investigative Site

Madrid, Spain

Novartis Investigative Site

Madrid, Spain

Novartis Investigative Site

Ankara, Sihhiye-Altindag, Turkey (Türkiye)

View Full Details on ClinicalTrials.gov

For the most up-to-date information, visit the official listing.

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NCT07190300


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