About this trial
This is a phase I, two-part, multicenter, first-in-human study. The Part 1 study will assess the safety, tolerability, preliminary anti-tumor activities, PK profile, immunogenicity and biomarker of GenSci139 in participants with locally advanced or metastatic solid tumors, as well as identity MTD (if any) and RDE. The Part 2 study is to further evaluate the preliminary anti-tumor activities, safety, PK profile, immunogenicity and biomarker of GenSci139 at RDE dose levels with selected advanced cancers.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Has the ability to understand and the willingness to sign a written informed consent document (prior to the initiation dose of GenSci139 and any study procedures).
Is willing and able to comply with the scheduled visits, treatment plan, laboratory tests and other specified study procedures.
Adult participants (≥18 years of age or acceptable age according to local regulations, whichever is older) at the time of voluntarily signing informed consent.
Is able to provide tumor tissues. Fresh biopsy specimens or archival tumor tissue samples obtained after last treatment are strongly preferred, and if not available, providing other archival tumor tissue specimens or not may be enrolled after discussion with sponsor.
Disqualifiers
Any active malignancy within 3 years before initiation dose of GenSci139 except for the cancer under investigation in this study and any locally recurring cancer that has been treated curatively (e.g., resected basal or squamous cell skin cancer, non-muscle invasive bladder cancer (NMIBC), carcinoma in situ of the cervix or breast).
Has diagnosed as primary central nervous system (CNS) tumor.
Has CNS metastases, unless asymptomatic, neurologically stable and not requiring steroids treatment for at least 4 weeks prior to initiation dose of GenSci139.
Has a history of leptomeningeal disease or spinal cord compression.
Trial design
Sequential
Treatments tested in this trial
GenSci139
DrugGenSci139 is a bispecific antibody drug conjugate targeting EGFR and HER2.
Treatment groups
Trial outcomes
Primary outcomes
Part 1 and Part2: Incidence of adverse events
Percentage of patients with adverse events by system organ class and preferred term
Dose limiting toxicities (DLTs)
DLTs are assessed during the DLT observation period and defined as any toxicity in DLT definition in the Clinical Study Protocol
Part1: Maximum Tolerated Dose (MTD) and Recommended Doses for Expansion (RDEs)
To determine the maximum tolerated dose (MTD), if any, and recommend dose of expansion (RDE) for GenSci139
Part2: Objective response rate(ORR)
To evaluate the preliminary anti-tumor activities of GenSci139 as measured by ORR using RECIST criteria v1.1.
Secondary outcomes
Cmax of GenSci139
Calculate maximum observed concentration of GenSci139
Part1: Cmax of total antibody
Calculate maximum observed concentration of total antibody
Part1: Cmax of free payload
Calculate maximum observed concentration of free payload
Part1: Tmax of GenSci139
Calculate time of maximum observed concentration of GenSci139
Sponsors and contacts
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