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First-Time-in-Human Study of GSK5471713 in Adults With mCRPC

A Phase 1/2 First-Time-in-Human, Open-label, Multicenter, Dose Escalation and Dose Optimization Study of GSK5471713 in Adult Participants With Metastatic Castration Resistant Prostate Cancer (mCRPC)

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07332455
Enrollment
54
Registered
2026-01-12
Start date
2026-02-10
Completion date
2030-03-26
Last updated
2026-09-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Neoplasms, Prostate

Keywords

Metastatic castration-resistant prostate cancer, First-Time-in-Human, GSK5471713, Prostate cancer

Brief summary

This first-time-in-human study will evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics, preliminary clinical activity, and establish the benefit/risk of GSK5471713 given as a monotherapy in mCRPC.

Interventions

DRUGGSK5471713

GSK5471713 will be administered at different dose levels based on the dose escalation study design

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Participants with mCRPC that have histologically or cytologically confirmed adenocarcinoma of the prostate. * Participants with mCRPC that has prostate cancer progression while on Androgen deprivation therapy (ADT). * Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0 or 1. * Progression on ADT and \>=1 prior Androgen receptor pathway inhibitors (ARPI) for Hormone-Sensitive Prostate Cancer (HSPC) or Castration resistant prostate cancer (CRPC) and received 1-2 prior taxane based chemotherapy regimens.

Exclusion criteria

* Pathological finding consistent with small cell, neuroendocrine carcinoma of the prostate, or any histology different from adenocarcinoma. * Impaired cardiac function or clinically significant cardiac disease. * Any significant medical condition, such as uncontrolled infection or clinically significant laboratory abnormality. * Prior therapy with Androgen receptor (AR) Degrader targeted therapy. Other protocol-defined inclusion/

Design outcomes

Primary

MeasureTime frame
Number of participants with dose limiting toxicities (DLTs)28 days
Number of participants with adverse events (AEs), and serious adverse events (SAEs)Approximately 45 months
Number of participants with adverse events (AEs), and serious adverse events (SAEs) by SeverityApproximately 45 months
Number of participants with AEs leading to dose modificationsApproximately 45 months

Secondary

MeasureTime frameDescription
Maximum plasma concentration (Cmax) of GSK5471713Approximately 45 months
Area under the plasma concentration-time curve from 0 to t (AUC[0-t]) of GSK5471713Approximately 45 months
Time to maximum plasma concentration (Tmax) of GSK5471713Approximately 45 months
Prostate-specific Antigen Decrease from Baseline >=50% (PSA50) Response RateApproximately 45 monthsPSA50 response is defined as a greater than or equal to (\>=)50 percent (%) decline in PSA from Baseline, confirmed at least 3 weeks later.
Objective response rate (ORR) per Prostate Cancer Working Group 3 (PCWG3) by investigator assessmentApproximately 45 monthsORR is defined as the percentage of participants in the ORR Evaluable set who have the Best overall response (BOR) of confirmed Complete response (CR) or Partial response (PR) per PCWG3 guidelines as assessed by investigator.

Countries

Australia, Canada, France, Japan, Netherlands, South Korea, Spain, United States

Contacts

CONTACTUS GSK Clinical Trials Call Center
GSKClinicalSupportHD@gsk.com877-379-3718
CONTACTEU GSK Clinical Trials Call Center
GSKClinicalSupportHD@gsk.com+44 (0) 20 89904466
STUDY_DIRECTORGSK Clinical Trials

GlaxoSmithKline

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 17, 2026