NCT06014190

HS-20089 in Patients With Ovarian Cancer and Endometrial Cancer

A Phase 2 Study of HS-20089 for Injection in Patients With Recurrent or Metastatic Ovarian Cancer and Endometrial Cancer

• Status: Recruiting
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 460 (estimated)
• Sponsor: Hansoh BioMedical R&D Company · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

HS-20089 is an investigational antibody-drug conjugate (ADC) composed of a humanized IgG1 anti-B7-H4 monoclonal antibody conjugated to the topoisomerase I inhibitor payload via a protease-cleavable linker, with an average drug-to-antibody ratio of about 6. This is a phase 2, open-label, multi-center study to evaluate the efficacy, safety, pharmacokinetics (PK) and immunogenicity of HS-20089 as monotherapy in patients with recurrent or metastatic ovarian cancer and endometrial cancer.

Detailed description

This is a phase 2, open-label, multi-center study composed of two parts: phase 2a and phase 2b. Phase 2a: This part of study will be conducted in the following four cohorts: Cohort 1: Patients with platinum-resistant ovarian cancer, fallopian tube cancer or primary peritoneal cancer. Cohort 2: Patients with recurrent or metastatic endometrial cancer who have progressed on or are intolerant to at least one line of standard platinum-based chemotherapy. Cohort 3: Patients with platinum-sensitive ovarian cancer, fallopian tube cancer or primary peritoneal cancer who have progressed on or are intolerant to at least two lines of standard platinum-based chemotherapy. Cohort 4: Patients with other advanced solid tumors who have progressed on or are intolerant to established standard therapies. Patients in cohort 1 will be randomly assigned 1:1 to receive HS-20089 at 4.8 mg/kg or 5.8 mg/kg and patients in the other three cohorts will receive HS-20089 at 5.8 mg/kg. Phase 2b: This part of study will be conducted in the following two cohorts: Cohort 1: Patients with platinum-resistant ovarian cancer, fallopian tube cancer or primary peritoneal cancer. Cohort 2: Patients with recurrent or metastatic endometrial cancer who have progressed on or are intolerant to at least one line of standard platinum-based chemotherapy. The cohorts may be adjusted based on the observed clinical results, translational medicine data and research progress in the field. All patients will receive HS-20089 at the recommended dose (RD) determined by accumulated research data.

Conditions

• Ovarian Cancer
• Fallopian Tube Cancer
• Primary Peritoneal Cancer
• Endometrial Cancer

Interventions

Type	Name	Description
DRUG	HS-20089	All patients will receive intravenous HS-20089 once every three weeks (Q3W) until experiencing objective disease progression (except for study drug treatment beyond progression) or meeting other protocol-specified criteria of study treatment discontinuation.

Timeline

• Start date: 2023-12-18
• Primary completion: 2025-12-31
• Completion: 2027-12-31
• First posted: 2023-08-28
• Last updated: 2024-08-29

Locations

28 sites across 1 country: China