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A Study of SKB571 in Participants With Gastrointestinal Tumors

A Phase II Clinical Study to Evaluate the Efficacy and Safety of SKB571 in Participants With Gastrointestinal Tumors

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07564466
Enrollment
120
Registered
2026-05-04
Start date
2026-05-20
Completion date
2028-06-30
Last updated
2026-08-04

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

Conditions

Gastrointestinal Tumors

Keywords

Gastrointestinal tumors

Brief summary

This is an open-label, multicenter, phase II study. The purpose of this study is to evaluate the safety, tolerability and preliminary anti-tumor activity of SKB571 in participants with gastrointestinal tumors.

Detailed description

This is a multicenter, open-label, Phase II clinical study to evaluate the efficacy, safety, tolerability, PK characteristics, and immunogenicity of SKB571 in participants with gastrointestinal tumors. Approximately 120 subjects will be enrolled in this study, including 4 cohorts with approximately 20-30 participants enrolled in each cohort.

Interventions

Intravenous(IV) infusion(Q3W)

Sponsors

Sichuan Kelun-Biotech Biopharmaceutical Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

1. Male or female, age ≥ 18 years and ≤ 75 years at the time of signing the informed consent form (ICF). 2. Participants must have histologically or cytologically confirmed gastrointestinal tumors. 3. At least one measurable lesion as assessed by the investigator according to RECIST v1.1. 4. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. 5. Life expectancy ≥ 12 weeks as assessed by the investigator. 6. Adequate organ and bone marrow function. 7. Male and female participants must agree to use highly effective methods of contraception during the study treatment period. 8. Participants must voluntarily join this study, sign the ICF, and be able to comply with the visits and related procedures specified in the protocol.

Exclusion criteria

1. Participants with other malignant tumors within 3 years before the first dose of study treatment. 2. History or current metastases to central nervous system. 3. Current uncontrolled concomitant diseases 4. Clinically severe lung damage due to complications of lung disorder 5. Participants with a history of interstitial lung disease (ILD)/non-infectious pneumonitis 6. A history of severe skin diseases 7. Unresolved toxicity from prior anti-tumor therapy 8. Serious infection within 4 weeks before the first dose of study treatment 9. Known active pulmonary tuberculosis. 10. Participants who have undergone major surgery or had severe trauma within 4 weeks before the first dose, or are expected to require major surgery during the study. 11. Known history of allogeneic organ transplant or allogeneic hematopoietic stem cell transplant. 12. Pregnant or breastfeeding women. 13. Other conditions deemed by the investigator as unsuitable for participation in this clinical trial.

Design outcomes

Primary

MeasureTime frame
Objective response rate (ORR)Up to approximately 24 months

Secondary

MeasureTime frameDescription
Progression-free survival (PFS), duration of response (DOR), disease control rate (DCR), and overall survival (OS)Up to approximately 24 months
Safety and tolerabilityUp to approximately 24 monthsIncidence and severity of adverse events (AEs) and serious adverse events (SAEs) (based on CTCAE v6.0), clinically significant abnormal laboratory test results, etc.
Maximum Plasma Concentration (Cmax) of SKB571-ADCUp to approximately 24 monthsBlood Samples will be collected to determine the Cmax of SKB571-ADC in the plasma
ImmunogenicityUp to approximately 24 monthsBlood Samples will be collected to measure Anti-drug antibody (ADA) against SKB571 in the serum
Minimum Plasma Concentration(Cmin) of SKB571-ADCUp to approximately 24 monthsBlood samples will be collected to determine the Cmin of SKB571-ADC in the plasma
Maximum Plasma Concentration(Cmax) of SKB571-TAbUp to approximately 24 monthsBlood samples will be collected to determine the Cmax of SKB571-TAb in the plasma
Minimum Plasma Concentration(Cmin) of SKB571-TAbUp to approximately 24 monthsBlood Samples will be collected to determine the Cmin of SKB571-TAb in the plasma
Maximum Plasma Concentration (Cmax) of unconjugated KL610348Up to approximately 24 monthsBlood Samples will be collected to determine the Cmax of unconjugated KL610348 in the plasma
Minimum Plasma Concentration(Cmin) of unconjugated KL610348Up to approximately 24 monthsBlood Samples will be collected to determine the Cmin of unconjugated KL610348 in the plasma

Countries

China

Contacts

CONTACTXin Li, MD
lixin@kelun.com86-13311373861

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 5, 2026