Phase Ib Study of HS-20093+HRS-5041 in Patients With Advanced Prostate Cancer

Inclusion Criteria:

* Men greater than or equal to 18 years.
* Voluntarily to participate, Signed and dated Informed Consent Form.
* Patients with metastatic castration-resistant prostate cancer (mCRPC) who progressed after at least one type of novel hormonal therapy (standard treatment).
* Eastern Cooperative Oncology Group (ECOG) Performance Status of 0\~1.
* Estimated life expectancy ≥ 12 weeks.
* Men should use adequate contraceptive measures throughout the study, up to 3 months after the last dose of HRS-5041 or 4.5 months after the last dose of HS-20093 (whichever is later).

Exclusion Criteria:

* Treatment with any of the following:

  a. Previous or current treatment with B7-H3 targeted therapy. b. Previous treatment with AR PROTAC. c. Any cytotoxic chemotherapy, investigational agents and anticancer drugs within 21 days prior to the first scheduled dose of HS-20093+HRS-5041. d. brain metastases.
* Any unresolved toxicities from prior therapy greater than Grade 2 according to Common Terminology Criteria for Adverse Events (CTCAE) 5.0.
* History of other primary malignancies.
* Inadequate bone marrow reserve or organ dysfunction.
* Severe, uncontrolled or active cardiovascular diseases.
* Severe or uncontrolled diabetes.
* The presence of active infectious diseases.
* Any known or suspected interstitial lung disease.
* History of serious neuropathy or mental disorders.
* History of severe hypersensitivity reaction, severe infusion reaction.
* Hypersensitivity to any ingredient of HS-20093.
* Unlikely to comply with study procedures, restrictions, and requirements in the opinion of the investigator.
* Any disease or condition that, in the opinion of the investigator, would compromise subject safety or interfere with study assessments.