Phase 1 Study of ACE-232 to Treat Patients With Metastatic Castration-Resistant Prostate Cancer

Clinicaltrials.gov ID: NCT06801236
db-list-check Status RECRUITING
b-loader Phase PHASE1
b-people Age ≥ 18 Years
b-bullseye-arrow Enrollments 67

Conditions

Prostate Cancer (Adenocarcinoma), mCRPC (Metastatic Castration-resistant Prostate Cancer)

Drugs

ACE-232 tablets

Summary

This is an open label, phase I, multi-center study aiming to assess the safety and tolerability in patients with metastatic castration resistant prostate cancer (mCRPC).

Detailed Description

The study consists of two parts, Phase 1A dose escalation and Phase 1B dose optimization. Phase 1A aims to assess the safety, tolerability, pharmacokinetic (PK) profile, and changes in pharmacodynamic (PD) markers in patients treated with ACE-232, and to determine the maximum tolerated dose (MTD), if applicable. In Phase 1B, patients with AR gene alterations will be treated at two different dose levels to establish the recommended Phase 2 dose (RP2D).

Locations

5 locations Found with status Recruiting

Status

  • RECRUITING

Central Contacts

Status

  • RECRUITING

Central Contacts

Status

  • RECRUITING

Central Contacts

Status

  • RECRUITING

Central Contacts

Status

  • RECRUITING

Central Contacts

Eligibility Criteria

Inclusion Criteria:

* Provide written informed consent
* Metastatic Castration-resistant Prostate Cancer with ongoing androgen - deprivation therapy (ADT) or have bilateral orchiectomy
* Difficult to treat or intolerant to standard treatment (post at least 1 line of NHA and taxane-based chemo in mHSPC or mCRPC), suitable for investigational treatment;
* Has Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
* Has a life expectancy of at least 6 months
* Adequate organ function and bone marrow function

Exclusion Criteria:

* Receiving any anti-cancer drugs or other treatment, major surgery, extensive radiation therapy, or local radiation therapy within protocol-defined wash-out period;
* Concomitant use of medications or herbal supplements known to be moderate to strong CYP3A4 inhibitors/inducers, or P-gp inhibitors, known to prolong the QT interval.
* Any previous treatment-related toxicities have not recovered.
* Spinal cord compression or known brain metastases or leptomeningeal carcinomatosis.
* Severe cardiovascular disorders.
* Known gastrointestinal (GI) disorder or GI procedure
* History of gastric and duodenal perforation.
* History of pituitary dysfunction.
* Poorly controlled diabetes mellitus.
* Active or uncontrolled autoimmune disease
* Active infections, or a known history of HIV infection, or a known active hepatitis B or C, or a known active tuberculosis.
* Other malignancies requiring treatment within 3 years prior to the first dose of study drug
* Known allergy or hypersensitivity to any of the excipients of ACE-232.
* Has other medical conditions that at the discretion of the investigator interfere with safety or efficacy evaluation, or treatment compliance.

Study Plan

ACE-232

  • DRUG:

    ACE-232 tablets

    Description:

    ACE-232 tablets will be administered orally daily as a continuous regimen together with Dexamethasone and Fludrocortisone. Subjects will continue to receive study treatment until PD as judged by local investigator review, development of unacceptable toxicity, or withdrawal of consent.

Outcome Measures

Primary Outcome Measures

Number of patients experiencing adverse events (AEs)/serious adverse events (SAEs)

Time Frame: From time of information consent to 30 days post last dose, up to approximately 37 months

Number of patients experiencing dose limiting toxicity (DLT), as defined in the protocol

Time Frame: From the first dose of ACE-232 on Cycle 1 Day 1 up to and including the planned end of Cycle 1 (at the end of 28 days)

Recommended Phase 2 dose (RP2D) and/or maximum tolerated dose (MTD)

Time Frame: Up to approximately 37 months

Secondary Outcome Measures

Pharmacokinetics characterization by using Area under the plasma concentration versus time curve (AUC)

Time Frame: Up to approximately 37 months

Pharmacokinetics characterization by using Maximum concentration (Cmax)

Time Frame: Up to approximately 37 months

Prostate Specific Antigen (PSA) response

Time Frame: Up to approximately 37 months

Objective Response Rate (ORR)

Time Frame: Up to approximately 37 months

Duration of Response (DoR)

Time Frame: Up to approximately 37 months

Radiographic Progression Free Survival (rPFS)

Time Frame: Up to approximately 37 months

Overall Survival (OS)

Time Frame: Up to approximately 37 months

Blood concentration of steroid hormone

Time Frame: Up to approximately 37 months

Timeline

  • Last Updated
    July 28, 2025
  • Start Date
    January 30, 2025
  • Today
    October 17, 2025
  • Completion Date ( Estimated )
    August 1, 2028

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