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A Study of IBI129 in Subjects With Unresectable, Locally Advanced or Metastatic Solid Tumors

A Phase 1/2 Study of IBI129 in Subjects With Unresectable, Locally Advanced or Metastatic Solid Tumors

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05991349
Enrollment
36
Registered
2023-08-14
Start date
2024-03-12
Completion date
2025-05-31
Last updated
2026-06-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Solid Tumor

Brief summary

This is a phase 1/2 multicenter, first-in-human study of IBI129. It includes a phase 1 dose escalation and expansion section to identify MTD/RP2D of IBI129, plan to enroll 22\ 180 subjects, and a phase 2 to explore efficacy, safety and tolerability of IBI129 at RP2D in specified types of solid tumor. Approximately 182 evaluable subjects will be enrolled for phase 2

Interventions

DRUGIBI129

Subjects will receive IBI129 on Day 1 of a 21-day cycle (or intervals determined by the Investigator and Sponsor based on safety, toxicity and PK data), until unacceptable toxicity, disease progression, withdrawal of consent, occurrence of other reasons for discontinuing study therapy, or for a maximum of 24 months of treatment, whichever occurs first.

Sponsors

Innovent Biologics (Suzhou) Co. Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Subjects with the ability to understand and give written informed consent for participation in this trial, including all evaluations and procedures as specified by this protocol; 2. At least 1 evaluable lesion according to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1.; 3. Male or female subjects ≥ 18 years old; 4. Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0 or 1; 5. Anticipated life expectancy of ≥ 12 weeks; 6. Adequate bone marrow and organ function

Exclusion criteria

1. Participate in any other interventional clinical research except observational (non-interventional) study or in the follow-up phase of the interventional study; 2. Received previous anti-tumor therapy within 4 weeks or 5 half-lives of the anti-tumor regimens before the first administration of study drug, whichever is shorter. 3. Progressed refractory to an antibody drug conjugate that consists of an exatecan derivative that is a topoisomerase I inhibitor. 4. Plan to receive other antitumor therapy during the study excluding palliative radiotherapy for the purpose of symptom (like pain) relief that must also do not have impact on tumor assessment throughout the study; 5. Known symptomatic central nervous system (CNS) metastases.

Design outcomes

Primary

MeasureTime frameDescription
Number of subjects with adverse events24 monthsOccurrence and severity of adverse events (AEs), with severity determined by NCI CTCAE v5.0 criteria
Number of subjects with clinically significant changes in physical examination results24 monthsClinically significant abnormal physical examination findings reported by the investigator.
Number of subjects with clinically significant changes in vital signs24 monthsVital signs including body temperature, pulse, respiratory rate, SpO2 and blood pressure
MTD or RP2D of IBI12912 monthsNumber of subjects with dose-limiting toxicities (DLTs)

Secondary

MeasureTime frameDescription
Plasma concentration (Cmax) of IBI12912 monthsPlasma concentration of IBI129 for single and multiple doses.
Area under the curve (AUC) of IBI12912 monthsAUC of IBI129 for single and multiple doses.
Time to maximum concentration (Tmax) of IBI12912 monthsTmax of IBI129 for single and multiple doses.
Clearance (CL) of IBI12912 monthsClearance of IBI129 from the plasma
Volume of distribution (V) of IBI12912 monthsApparent volume of distribution of IBI129.
Half-life (T1/2) of IBI12912 monthsT1/2 of IBI129 for single and multiple doses.
Immunogenicity of IBI12912 monthsIncidence of anti-drug (IBI129) antibody
Objective response rate (ORR)24 monthsORR as evaluated per the RECIST v1.1 criteria
Duration of response (DoR)24 monthsDoR as evaluated per the RECIST v1.1 criteria
Disease control rate (DCR)24 monthsDCR as evaluated per the RECIST v1.1 criteria
Time to response (TTR)24 monthsTTR as evaluated per the RECIST v1.1 criteria
Progression free survival (PFS)24 monthsPFS as evaluated per the RECIST v1.1 criteria
Overall survival (OS)24 monthsOverall survival.

Countries

Australia, China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 25, 2026