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Tislelizumab (Anti-Programmed Cell Death Protein-1 (PD-1) Antibody) in MSI-H or dMMR Solid Tumors

A Single-Arm, Multi-Center, Open-Label, Phase 2 Study to Evaluate Efficacy and Safety of Tislelizumab (BGB-A317), an Anti-PD-1 Monoclonal Antibody, as Monotherapy in Patients With Previously-Treated Locally Advanced Unresectable or Metastatic Microsatellite Instability-High (MSI-H) or Mismatch Repair Deficient (dMMR) Solid Tumors

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03736889
Enrollment
200
Registered
2018-11-09
Start date
2018-09-19
Completion date
2027-09-30
Last updated
2025-12-17

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

Conditions

MSI-H/dMMR Solid Tumors

Keywords

MSI-H/dMMR, Solid tumors, PD-1

Brief summary

In this Phase 2, Single-Arm, Multi-Center, Open-Label Study, participants with previously treated locally advanced unresectable or metastatic solid tumors with mismatched repair deficient (dMMR) or microsatellite instability-high (MSI-H) will be treated with anti-PD-1 Monoclonal Antibody Tislelizumab (BGB-A317).

Interventions

Anti-PD-1 Antibody

Sponsors

BeiGene
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

Key Inclusion Criteria: 1. Having histological confirmed diagnosis of malignancy 2. Having locally advanced unresectable or metastatic solid tumors with MSI-H or dMMR 3. Having received prior cancer therapy regimen(s) for advanced disease. 4. At least 1 measurable lesion as defined per RECIST Version (v) 1.1 5. Eastern Cooperative Oncology Group (ECOG) Performance Status ≤ 1 6. Adequate organ function Key

Exclusion criteria

1. Prior therapy with an anti-PD-1, anti-PD-L1, anti-PD-L2 or any other antibody or drug specifically targeting T-cell co-stimulation or checkpoint pathways 2. Active leptomeningeal disease or uncontrolled brain metastasis. 3. Clinically significant pleural effusion, pericardial effusion or ascites 4. Active autoimmune diseases or history of autoimmune diseases that may relapse 5. Any active malignancy 6. Any condition that required systemic treatment with either corticosteroids (\> 10 mg daily of prednisone or equivalent) or other immunosuppressive medication ≤ 14 days before the first dose of study drug 7. Having a history of interstitial lung disease, non-infectious pneumonitis, pulmonary fibrosis, acute lung diseases, or uncontrolled systemic diseases (including but not limited to diabetes, hypertension, etc.) 8. Participants with uncontrolled diabetes or uncontrolled electrolyte disorders despite standard medical management 9. Having severe chronic or active infections 10. A known history of human immunodeficiency virus infection 11. Child - Pugh B or greater cirrhosis 12. Any major surgical procedure ≤ 28 days before the first dose of study drug 13. Prior allogeneic stem cell transplantation or organ transplantation NOTE: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frame
Objective response rate assessed by Independent Review Committee per Response Evaluation Criteria in Solid Tumors Version 1.1Up to 2 years

Secondary

MeasureTime frame
Time to response assessed by Independent Review Committee and by investigator per Response Evaluation Criteria in Solid Tumors Version 1.1Up to 2 years
Progression-free survival assessed by Independent Review Committee and by investigator per Response Evaluation Criteria in Solid Tumors Version 1.1Up to 2 years
Disease control rate assessed by Independent Review Committee and by investigator per Response Evaluation Criteria in Solid Tumors Version 1.1Up to 2 years
Duration of response assessed by Independent Review Committee and by investigator per Response Evaluation Criteria in Solid Tumors Version 1.1Up to 2 years
Objective response rate assessed by investigator per Response Evaluation Criteria in Solid Tumors Version 1.1Up to 2 years
Safety and tolerability assessment per the number of participants experiencing Treatment-Emergent Adverse Event (TEAE) as assessed by CTCAE v5.0Up to 2 years
Overall survivalUp to 2 years

Countries

China

Contacts

Primary ContactBeiGene
clinicaltrials@beigene.com+1-877-828-5568

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 15, 2026