About this trial
Phase Ib A preliminary design of 2 cohorts is planned for this phase, with 3-6 participants to be enrolled in each cohort. A total of 6-12 participants with advanced prostate cancer are planned to be enrolled in this phase. The study will be conducted at multiple investigational sites.
Phase II A preliminary design of 5 cohorts is planned for this phase. Cohorts 1, 2, and 3 are preset with 2 dose groups each, and each dose group plans to enroll 20-30 participants. Cohort 4 plans to enroll 20-50 participants. Cohort 5 will be adjusted based on results from prior study phases. A total of 140-230 participants with advanced prostate cancer are planned to be enrolled in this phase. The study will be conducted at multiple investigational sites.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Signed written informed consent prior to initiation of any study activity/procedure;
Male, ≥18 years of age;
Expected survival ≥ 3 months;
ECOG performance status score of 0-1;
Disqualifiers
Cohort 1: Prior treatment with abiraterone or cytotoxic chemotherapy (including but not limited to antibody-drug conjugates [ADCs] with cytotoxic payload). *Note:* Docetaxel use during the hormone-sensitive setting is allowed, provided there was no treatment failure or disease progression during therapy or within 3 months after completion.
Cohort 2: Prior cytotoxic chemotherapy (including but not limited to ADCs with cytotoxic payload) at any stage of prostate cancer. *Note:* Docetaxel use during the hormone-sensitive setting is allowed, provided there was no treatment failure or disease progression during therapy or within 3 months after completion.
Cohort 1: Prior treatment with abiraterone or cytotoxic chemotherapy (including but not limited to ADCs with cytotoxic payload). *Note:* Docetaxel use during the hormone-sensitive setting is allowed, provided there was no treatment failure or disease progression during therapy or within 3 months after completion.
Cohort 2:Participants must be treatment-naïve in the metastatic castration-sensitive prostate cancer (mCSPC) setting; i.e., participants must not have received any cytotoxic chemotherapy (including but not limited to ADCs with cytotoxic payload), with the exception that first-generation antiandrogen (ADT) therapy is allowed during the mCSPC stage.
Trial design
Parallel
Treatments tested in this trial
XNW5004 1200 mg BID in Combination with Abiraterone plus Prednisone
DrugIb Cohort 1: XNW5004 1200 mg, PO, BID (10-14 hours interval between two doses, taken with warm water); Abiraterone 1000 mg PO, taken on an empty stomach at least 1 hour before and at least 2 hours after a meal, QD; Prednisone 5 mg PO, BID (prednisone dosing frequency may be adjusted at the investigator's discretion).
XNW5004 1200 mg BID in Combination with Docetaxel plus Prednisone
DrugIb Cohort 2: XNW5004 1200 mg, PO, BID (10-14 hours interval between two doses, taken with warm water), administered continuously until disease progression, death, withdrawal of informed consent, intolerable toxicity, or any other condition that the investigator deems necessary for study discontinuation. Docetaxel 75 mg/m², intravenous (IV), Day 1; Prednisone tablets 5 mg, PO, BID, taken continuously.
XNW5004 800 mg or 1200 mg (1:1 randomization), PO, BID; Abiraterone 1000 mg PO, taken on an empty stomach at least 1 hour before and at least 2 hours after a meal, QD; plus Prednisone 5 mg PO BID
DrugXNW5004 800 mg or 1200 mg (1:1 randomization), PO, BID; Abiraterone 1000 mg PO, taken on an empty stomach at least 1 hour before and at least 2 hours after a meal, QD; plus Prednisone 5 mg PO, BID or QD. Required first-dose sequence on Day 1 and Day 28 of Cycle 1 for the first 10 participants in each dose cohort: Take abiraterone first; consume a meal 1 hour after abiraterone administration; take XNW5004 tablets plus prednisone simultaneously 1.5 hours after abiraterone administration.
XNW5004 800 mg or 1200 mg (1:1 randomization), PO, BID; Abiraterone 1000 mg PO, taken on an empty stomach at least 1 hour before and at least 2 hours after a meal, QD; plus Prednisone 5 mg PO, QDD
DrugXNW5004 800 mg or 1200 mg (1:1 randomization), PO, BID; Abiraterone 1000 mg PO, taken on an empty stomach at least 1 hour before and at least 2 hours after a meal, QD; plus Prednisone 5 mg PO, QD. Required first-dose sequence on Day 1 and Day 28 of Cycle 1 for the first 10 participants in each dose cohort: Take abiraterone first; consume a meal 1 hour after abiraterone administration; take XNW5004 tablets plus prednisone simultaneously 1.5 hours after abiraterone administration.
XNW5004 800/1200 mg BID in Combination with Docetaxel plus Prednisone
DrugXNW5004 800 mg or 1200 mg (1:1 randomization), PO, BID, administered continuously until disease progression, death, withdrawal of informed consent, intolerable toxicity, or any other condition that the investigator deems necessary for study discontinuation. Docetaxel 75 mg/m², intravenous (IV), Day 1 (premedication prior to docetaxel administration shall follow the prescribing information and standard clinical practice of the study center); plus Prednisone tablets 5 mg, PO, BID, taken continuously.
XNW5004 1200 mg, PO, BID (10-14 hours interval between two doses, taken with warm water); Enzalutamide 160 mg, PO, QD. Each treatment cycle consists of 4 weeks.
DrugXNW5004 1200 mg, PO, BID (10-14 hours interval between two doses, taken with warm water); Enzalutamide 160 mg, PO, QD. Each treatment cycle consists of 4 weeks.
Subsequent development plans will be determined based on preliminary study results.
DrugSubsequent development plans will be determined based on preliminary study results.
Treatment groups
7
Treatment groupsSee each treatment group below.
Trial outcomes
Primary outcomes
Radiographic Progression-Free Survival
Recommended Phase 3 Dose(Phase II Cohorts 1, 2, and 3)
Secondary outcomes
Time to PSA Progression
PSA Response Rate at Week 12
Proportion of Participants with PSA Reduction ≥50% from Baseline During Entire Treatment Period
Time to First Symptomatic Skeletal Event
Other outcomes
Retrospective Analysis of Correlation Between Biomarkers (Including AR-V7) and Efficacy
Locations
Sponsors and contacts
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