About this trial
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.
Eligibility criteria
Qualifiers
Males or females aged 18 years or older (≥18 years).
Patients diagnosed with recurrent or metastatic ovarian cancer, endometrial cancer or other solid tumors.
Subjects have at least one target lesion as assessed per the RECIST 1.1. Patients with only brain and/or bone lesions as target lesions are ineligible.
Tumor tissue from a newly obtained biopsy (FFPE tumor tissue blocks or slides are acceptable) is required. If the newly obtained biopsy is not feasible, newly obtained FFPE slides cut from archival tumor tissue blocks within 2 years prior to the first dose of study drug are acceptable.
Disqualifiers
B7-H4-targeted therapies.
Have received any of cytotoxic chemotherapy drugs, investigational drugs, anti-tumor traditional Chinese medicines or other anti-tumor drugs (including endocrine therapy, molecular targeted therapy, biotherapy, etc.) within 14 days prior to the first dose of study drug; or need to continue these drugs during the study.
Have received macromolecular antitumor drugs (including immunotherapy, such as monoclonal antibodies and bispecific antibodies) within 28 days prior to the first dose of study drug.
Have received locoregional radiation therapy within 2 weeks prior to the first dose of study drug; more than 30% of bone marrow irradiation or wide-field radiation therapy within 4 weeks prior to the first dose of study treatment.
Trial design
Treatments tested in this trial
- HS-20089
Treatment groups
6
Treatment groupsSee each treatment group below.