Novel ACK1 Inhibitor (R)-9b in Patients With Prostate Cancer

Part of paid clinical trials in Madison, Wisconsin.

Sponsor
TechnoGenesys, Inc.
Study ID
NCT06705686
Phase
PHASE1
Status
Recruiting
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Conditions

  • Metastatic Castration-resistant Prostate Cancer (CRPC)
  • Metastatic Castration-resistant Prostate Carcinoma

Eligibility Criteria

Sex
MALE
Age
18 Years - N/A
Healthy Volunteers
Not accepted

Interventions

  • (R)-9bMS — DRUG
    (R)-9bMS will be given in clinic on day 1, two doses 12 hours (+/- 30 minutes) apart, and on day 2, 12 hours (+/- 30 minutes) after the second day 1 dose. Patients will be admitted overnight for these first 3 doses. Patient must be fasting 1 hour before and 1 hour after doses for these first 3 doses. (R)-9bMS should be taken with a glass of water. Patients will be dispensed home supply after C1D2 morning dose.

Study Details

TITLE: Phase 1 First in Human Trial to Assess Safety and Tolerability of the Novel ACK1 Inhibitor (R)-9bMS in Patients with Prostate Cancer (PHAROS) STUDY DESCRIPTION: Prostate cancer (PC) patients receive androgen deprivation therapy (ADT), but recalcitrant disease recurs typically within 2-3 years, referred to as the Castration Resistant Prostate Cancer (CRPC). Androgen receptor (AR) targeted therapies, such as Enzalutamide (Enz) or Abiraterone (Abi), are FDA-approved therapeutics for CRPC patients. However, virtually all patients develop resistance. A non-receptor tyrosine kinase, ACK1 act as a novel epigenetic modifier in prostate tumors, regulating AR and its splice variant, AR-V7 expression. A new class of ACK1 small molecule inhibitor, (R)-9bMS, was developed that exhibited excellent drug-like properties. Treatment with (R)-9bMS suppressed Abi and Enz-resistant tumor growth in mice. Robust immune activation against prostate tumors was also reflected in mice treated with ACK1 inhibitor, (R)-9bMS. Importantly (R)-9bMS functionally reinvigorated peripheral blood mononuclear cells (PBMCs) of CRPC patients to mount a robust immune response against CRPC organoids. Collectively, these data indicate that the ACK1 inhibitor, (R)-9bMS, fulfills a unique niche, wherein it not only suppressed AR/AR-V7 within the tumor milieu, but also activated host immune system by overcoming CSK-restrained LCK activity, to mount a robust 'dual' anti-tumor response. OBJECTIVES: Primary Objective: To assess the safety and tolerability of (R)-9bMS in patients with metastatic castration-resistant prostate cancer. Secondary Objectives: To determine the maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D) of (R)-9bMS in patients with CRPC. To determine the pharmacokinetics (PK) of (R)-9bMS in patients after single and multiple dose oral administration. To assess clinical outcomes and anti-tumor activity in patients treated with (R)-9bMS. ENDPOINTS: Primary Endpoint: Frequency of dose-limiting toxicities and toxicity and severe AEs per CTCAE v 5.0. Secondary Endpoints: * RP2D (recommended phase 2 dose) * PK (pharmacokinetics) * PSA responses * Duration of responses * ORR (objective response rate) * OS (overall survival) * PFS (progression free survival) * DSS (disease specific survival) * Toxicity and severe AEs per CTCAE v 5.0 STUDY POPULATION: Approximately 18-30 adult patients with a histologic or cytologic diagnosis of metastatic castration resistant prostate cancer will be enrolled. PHASE: Phase I DESCRIPTION OF SITES: This study will be open to enrollment at the University of Wisconsin Carbone Cancer Center DESCRIPTION OF STUDY INERVENTION: (R)-9bMS will be taken by mouth twice daily until completion of 12 cycles, progression or intolerance STUDY DURATION: 12 months for enrollment + 12 months treatment + 12 months follow-up + 12 months for data analysis = 48 months.

Key Dates

Start date
Mar 13, 2026
Status verified
Mar 2026
Primary completion
Dec 30, 2027
Completion
Mar 30, 2028

Study Design

Enrollment
40 participants (estimated)
Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT

Arms

  • Experimental: Dose Escalation: (R)-9bMS
    Patient will take the assigned dose of (R)-9bMS twice daily by mouth for up to 6 months. Each cycle is 28 days.
  • Experimental: Expansion: (R)-9bMS
    Patient will take (R)-9bMS twice daily by mouth for up to 6 months. Each cycle is 28 days. The assigned dose will be determined in the Dose Escalation portion of the trial.

Primary Outcome Measure

Frequency of dose-limiting toxicities (Dose Escalation only) [ Time Frame: From day 1 of treatment through day 28 of treatment ]

Central Contacts

Locations (1)

FacilityCityStateZIPSite coordinators
University of Wisconsin Carbone Cancer Center (UWCCC) - Cancer ConnectMadisonWisconsin53792
UW Clinical Trial Navigation Team UW Clinical Trial Navigation Team
[email protected]
800-622-8922
Douglas McNeel, MD (PRINCIPAL_INVESTIGATOR)

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By research site
University of Wisconsin Carbone Cancer Center (UWCCC) - Cancer Connect· Madison, WI

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