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ARX517 in Subjects With Metastatic Castration-Resistant Prostate Cancer

Status
Active
Cancer Type
Prostate Cancer
Unknown Primary
Trial Phase
Phase I
Eligibility
18 Years and older, Male
Study Type
Treatment
NCT ID
NCT04662580
Protocol IDs
ARX517-2011 (primary)
NCI-2021-03637
Study Sponsor
Ambrx, Inc.

Summary

This is a phase 1 study to assess the safety and tolerability of ARX517 in adult subjects
with Metastatic Castration-Resistant Prostate Cancer (mCRPC).

Objectives

This is a first-in-human, Phase 1, multicenter, open-label study to evaluate the safety,
PK, PDy, and preliminary anti-tumor activity of ARX517 in adult subjects with mCRPC with
serum testosterone level < 50 ng/dL at screening who are resistant or refractory to
standard therapies. Phase 1a (dose-escalation) and Phase 1b (dose-expansion) stages will
identify the MTD and/or RDDs.

Eligibility

  1. Male subjects = 18 years at the first time of providing written informed consent.
  2. Histologically confirmed prostate adenocarcinoma.
  3. Documented metastatic disease and evidence of disease progression
  4. Castration-resistant prostate cancer defined as surgical or medical castration with serum testosterone levels of = 50 ng/dL (1.73 nM) at Screening. For patients who have not undergone an orchiectomy, must be undergoing treatment with a luteinizing hormone-releasing hormone (LHRH) agonist or antagonist and must agree to continue such therapy while on study treatment.
  5. Prior receipt of the following for metastatic prostate cancer:
  6. at least two lines of treatment
  7. at least two Food and Drug Administration (FDA)-approved therapies with at least one being a second-generation androgen receptor signaling inhibitor (e.g., abiraterone, darolutamide, apalutamide, or enzalutamide).
  8. Adequate blood counts Key

Treatment Sites in Georgia

Winship Cancer Institute of Emory University


1365 Clifton Road NE
Building C
Atlanta, GA 30322
winshipcancer.emory.edu

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