NCT04754425

Erdafitinib for the Treatment of Patients With Castration-Resistant Prostate Cancer

A Study of Erdafitinib in Castration-Resistant Prostate Cancer Patients Evaluating Markers of Bone Remodeling and FGF Signaling in Plasma and Bone Marrow

• Status: Terminated
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 11 (actual)
• Sponsor: M.D. Anderson Cancer Center · Academic / Other
• Sex: Male
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This phase II trial studies the effect of erdafitinib in treating patients with prostate cancer that grows and continues to spread despite the surgical removal of the testes or drugs to block androgen production (castration-resistant). Erdafitinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Giving erdafitinib may help control disease in patients with castration-resistant prostate cancer. In addition, studying samples of blood, tissue, plasma, and bone marrow from patients with castration-resistant prostate cancer in the laboratory may help doctors learn more about changes that occur in deoxyribonucleic acid (DNA) and identify biomarkers related to cancer.

Detailed description

PRIMARY OBJECTIVE: I. To evaluate efficacy of erdafitinib in subjects with advanced prostate cancer who have progressed on a second-generation androgen receptor (AR)-targeting agents (SART). SECONDARY OBJECTIVES: I. To evaluate the objective response rate II. To measure Time on Treatment (ToT) as a surrogate of clinical efficacy and Progression-Free Survival (PFS) III. To measure PFS. IV. To correlate bone specific alkaline phosphatase (BAP) modulation with response, ToT and PFS. V. To correlate prostate specific antigen (PSA) modulation with response, ToT and PFS. VI. To characterize the safety profile of subjects treated with erdafitinib. VII. To measure overall survival. VIII. To collect and archive bone marrow biopsies and aspirates, serum and plasma in study patients for later hypothesis generating associations. EXPLORATORY OBJECTIVE: I. To evaluate DNA, ribonucleic acid (RNA), or protein biomarkers in tissue and blood samples which potentially predict tumor response or resistance to erdafitinib. OUTLINE: Patients receive erdafitinib orally (PO) once daily (QD) on days 1-21. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Patients may also undergo collection of blood and bone marrow via biopsy and aspirates. After completion of study treatment, patients are followed up at 30 days, every 16 weeks for 1 year, and then every 6 months thereafter.

Conditions

• Castration-Resistant Prostate Carcinoma
• Castration-Resistant Prostate Carcinoma Refractory to Second-Generation Androgen Receptor Axis-Targeted Agents
• Metastatic Malignant Neoplasm in the Bone
• Metastatic Prostate Adenocarcinoma
• Metastatic Prostate Small Cell Neuroendocrine Carcinoma
• Stage IV Prostate Cancer AJCC v8
• Stage IVA Prostate Cancer AJCC v8
• Stage IVB Prostate Cancer AJCC v8

Interventions

Type	Name	Description
PROCEDURE	Biopsy	Undergo biopsy
PROCEDURE	Biospecimen Collection	Undergo collection of blood and bone marrow
DRUG	Erdafitinib	Given PO

Timeline

• Start date: 2021-07-15
• Primary completion: 2026-02-02
• Completion: 2026-02-02
• First posted: 2021-02-15
• Last updated: 2026-02-06

Locations

1 site across 1 country: United States

Regulatory

• FDA-regulated drug study