A Trial of SHR3680 in Prostate Cancer Patients Who Are Candidates for Radical Prostatectomy

Phase 3

Recruiting

• Conditions: Patients With High-risk Localized or Locally Advanced Prostate Cancer Who Are Candidates for Radical Prostatectomy
• Interventions: Drug: SHR3680; Drug: Placebo

• Registration Number: NCT05009290
• Lead Sponsor: Jiangsu HengRui Medicine Co., Ltd.

Brief Summary

The study is being conducted to evaluate the efficacy and safety of SHR3680 plus androgen deprivation therapy (ADT) vs. placebo plus ADT in patients with high-risk localized or locally advanced prostate cancer using pathologic complete response (pCR) rate and metastasis-free survival (MFS).

Detailed Description

Not available

Study Timeline

• Status Verified: 2021-08
• Study First Submitted: 2021-08-09
• Study First Submitted QC: 2021-08-15
• Study First Posted: 2021-08-17
• Study Start: 2021-11-01
• Last Update Submitted: 2021-12-28
• Last Update Posted: 2022-01-13
• Primary Completion: 2027-10-30
• Study Completion: 2031-10-30

Recruitment & Eligibility

• Status: RECRUITING
• Sex: Male
• Target Recruitment: 1256

Inclusion Criteria

1. Age of ≥ 18 years old;
2. ECOG PS score of 0 or 1;
3. Pathologically diagnosed as prostate adenocarcinoma;
4. High-risk patients
5. No distant metastasis (clinical staging of M0) as determined by BICR of imaging examinations;
6. Subjects who are candidates for and plan to undergo radical prostatectomy (removal of the entire prostate and seminal vesicle plus pelvic lymphadenectomy);

Exclusion Criteria

1. Subjects who received any prior treatment for prostate cancer, except medical ADT and/or first-generation androgen receptor antagonists (such as bicalutamide) for not more than 4 weeks;
2. Subjects who received any other investigational products or underwent major surgery within 4 weeks prior to randomization;
3. Subjects who are planning bilateral orchidectomy during the treatment period of the study;
4. Subjects with dysphagia, chronic diarrhea, intestinal obstruction, or other factors affecting drug intake and absorption;
5. Subjects with a history of epilepsy, or diseases that can induce seizures occurred within 12 months prior to randomization (including a history of transient ischemic attack, stroke, traumatic brain injury, and cognitive impairment, requiring hospitalization);
6. Subjects with active heart disease within 6 months prior to randomization, including: severe/unstable angina pectoris, myocardial infarction, symptomatic congestive heart failure, and ventricular arrhythmias requiring medical treatment;

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Treatment group：SHR3680 + ADT	SHR3680	-
Treatment group : Placebo + ADT	Placebo	-

Primary Outcome Measures

Name	Time	Method
pCR rate (assessed by pathology BICR)	36 months since the first subject will be enrolled.	Defined as the proportion of subjects with no residual tumor detected in prostatectomy specimens by H\&E staining and ancillary immunohistochemistry (if necessary) as assessed by pathology BICR.
MFS (assessed by imaging BICR).	84 months since the first subject will be enrolled.	Defined as the time from the date of randomization to the date of first occurrence of BICR-confirmed radiographic distant metastasis, accidental pathologic finding of distant metastasis, or death from any cause (whichever occurs first), regardless of whether the subject reveives any other anti-tumor therapy or has missing (or unevaluable) tumor assessments.

Secondary Outcome Measures

Name	Time	Method
MFS (investigator-assessed).	84 months since the first subject will be enrolled.	Defined as the time from the date of randomization to the date of first occurrence of investigator-assessed radiographic distant metastasis to the bone or soft tissue, accidental pathologic finding of distant metastasis, or death from any cause (whichever occurs first), regardless of subsequent anti-tumor treatment or missing (or unevaluable) tumor assessments.
PSA response rate.	25 months since the first subject will be enrolled.	Defined as the proportion of subjects with a ≥ 90% decrease in PSA levels from baseline on Day 1 of Cycle 4.
PSM rate.	31 months since the first subject will be enrolled.	Defined as the proportion of subjects without tumor cells detected in the margin of prostatectomy pathological specimens following H\&E staining and ancillary immunohistochemistry (if necessary), as assessed by local pathologists.
Time to BCR.	42 months since the first subject will be enrolled.	Defined as the time from the date of randomization to the time of BCR (i.e. two consecutive PSA rise ≥ 0.2 ng/mL following radical prostatectomy).

Trial Locations

Locations (1)

Fudan University Shanghai Cancer center; 🇨🇳 Shanghai, Shanghai, China