Status:

NOT_YET_RECRUITING

A Phase I Study of JSB462 (Luxdegalutamide) in Japanese Patients With Metastatic Prostate Cancer

Lead Sponsor:

Novartis Pharmaceuticals

Conditions:

Metastatic Prostate Cancer (mCRPC)

Eligibility:

MALE

18+ years

Phase:

PHASE1

Brief Summary

This Phase I study aims to evaluate the safety, tolerability and PK of JSB462 in Japanese patients with metastatic prostate cancer.

Detailed Description

Participants will receive JSB462 at the starting dose of 300 mg QD to evaluate its safety, tolerability and PK. Any Adverse Events (AEs) and Dose Limiting Toxicities (DLTs) will be assessed. DLTs will...

Eligibility Criteria

Inclusion

  • Key
  • Adult male patients with histologically or cytologically confirmed and documented adenocarcinoma of the prostate.
  • At least 1 bone or visceral metastatic lesion (according to local radiology assessment by the investigator) present on baseline CT, MRI, or bone scan imaging obtained ≤28 days prior to enrollment. Lymph nodes as only site of metastases are not allowed.
  • Patients with prostate cancer must have failed or refused available standard therapies, be intolerant or ineligible to receive such therapy, or for whom no standard therapy exists.
  • Patients must have a castrate level of serum/plasma testosterone (\<50 ng/dL or \<1.7 nmol/L). Ongoing ADT (as defined by prior orchiectomy and/or ongoing GnRH analog/antagonist) is allowed prior to enrollment.
  • Patients with an Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) ≤ 1.
  • Key

Exclusion

  • Patients with CNS metastases.
  • Patients with any other active malignancy other than prostate cancer. Exceptions to this criterion include the following: malignancies that were treated curatively at least 3 years before starting study treatment which have not recurred; basal cell carcinoma of the skin or squamous cell carcinoma of the skin that has undergone potentially curative local therapy or other tumors that will not affect life expectancy.
  • Other inclusion/exclusion criteria may apply

Key Trial Info

Start Date :

December 26 2025

Trial Type :

INTERVENTIONAL

Allocation :

ESTIMATED

End Date :

June 18 2027

Estimated Enrollment :

15 Patients enrolled

Trial Details

Trial ID

NCT07174063

Start Date

December 26 2025

End Date

June 18 2027

Last Update

December 9 2025

Active Locations (1)

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Page 1 of 1 (1 locations)

1

Novartis Investigative Site

Koto Ku, Tokyo, Japan, 135 8550