Overview
HS-20089 is a novel DAR-6 antibody-drug conjugate (ADC) targeting B7-H4. In preclinical studies, it inhibited tumor cell growth expressing B7-H4 in vitro and in vivo. The first-in-human trial is conducted to assess the maximum tolerated dose (MTD) and dose limiting toxicity (DLT), to evaluate the pharmacokinetics, safety and preliminary anti-tumor activity of HS-20089 in Patients With Advanced Solid Tumors.
Description
This is a Phase 1a/1b open-label, multicenter study with dose escalation and dose expansion cohorts to evaluate the safety, tolerability, PK and preliminary efficacy of HS-20089 in patients with advanced solid tumors.
The Dose Escalation will include an initial accelerated titration design followed by a Bayesian optimal interval (BOIN) design. Enrollment into Dose Expansion will begin after identification of the MTD and/or MAD in Phase 1a. In Phase 1b, preliminary efficacy will be evaluated in planned expansion cohorts that include patients with specific tumor types that are B7-H4+ advanced solid tumors.
Eligibility
Inclusion Criteria:
- Men or women aged more than or equal to (≥) 18 years
- Advanced solid tumor patients confirmed by histology or cytology for who that standard treatment is invalid, unavailable or intolerable
- Patients have at least one target lesion according to RECEST 1.1. The requirements for target lesions are: measurable lesions without local treatment such as irradiation, or with definite progress after local treatment, with the longest diameter ≥ 10 mm in the baseline period (in case of lymph nodes, the shortest axis ≥ 15 mm is required)
- ECOG performance status was 0-1 and did not deteriorate in the previous 2 weeks
- Estimated life expectancy greater than (>) 12 weeks
- Females should be using adequate contraceptive measures throughout the study; should not be breastfeeding at the time of screening, during the study and until 3 months after completion of the study; and must have evidence of non-childbearing potential
- Sign Informed Consent Form
Exclusion Criteria:
- Treatment with any of the following:
- Previous or current treatment with drugs targeting B7-H4
- Any cytotoxic chemotherapy, investigational agents or anticancer drugs within 28 days of the first dose of study drug
- Radiotherapy with a limited field of radiation for palliation within 2 weeks of the first dose of study drug, or patients received more than 30% of the bone marrow irradiation, or large-scale radiotherapy within 4 weeks of the first dose.
- Major surgery (including craniotomy, thoracotomy, or laparotomy, etc.) within 4 weeks of the first dose of study drug.
- Known and untreated, or active central nervous system metastases.
- Existing abnormal CTCAE≥grade 2 resulted from previous treatment
- History of other malignancy
- Inadequate bone marrow reserve or organ function
- Evidence of hepatitis B virus (HBV) or hepatitis C virus (HCV), unless the hepatitis is considered to be cured, Known history of HIV
- History of hypersensitivity to any active or inactive ingredient of HS-20089.
- Judgment by the investigator that the patient should not participate in the study if the patient is unlikely to comply with study procedures, restrictions, and requirements.
- Any disease or condition that, in the opinion of the investigator, would compromise the safety of the patient or interfere with study assessments.