Phase 1b Multicenter Study of SG001, a Humanized Anti-PD-1 Antibody, in Patients with Advanced Solid Tumors.
SG001 is a humanized, IgG4 monoclonal antibody against human PD-1. This phase 1b study aimed to evaluate efficacy and safety of SG001 in advanced solid tumors.
Patients with previously treated solid tumors that are PD-L1-positive, and/or dMMR/MSI-H, and/or Epstein-Barr virus positive were enrolled in Cohort A, while patients with PD-L1-unselected malignant mesothelioma and PD-L1-unselected non-small cell lung cancer (NSCLC) were enrolled in Cohorts C and E, respectively. All patients in Cohorts A, C, and E received SG001 at a dose of 240mg every two weeks for 2 years or until disease progression, intolerable toxicities, or withdrawal of consent. The primary endpoint was the investigator-assessed overall response rate (ORR).
A total of 87 patients were enrolled: 33 in Cohort A, 24 in Cohort C, and 30 in Cohort E. Investigator-assessed ORR was 39.4% in Cohort A, 12.5% in Cohort C, and 16.7% in Cohort E; corresponding median PFS values were 9.6, 4.1, and 4.0 months. The most common treatment-related adverse events (TRAEs) were increased alanine aminotransferase (13.8%), proteinuria (12.6%), rash (12.6%), and increased aspartate aminotransferase (10.3%). No TRAEs leading to death were reported.
SG001 demonstrated promising activity in patients with pretreated advanced solid tumors, especially those with PD-L1-positive NSCLC. The safety profile was well tolerated.
ClinicalTrials.gov identifier: NCT03852823.
Patients with previously treated solid tumors that are PD-L1-positive, and/or dMMR/MSI-H, and/or Epstein-Barr virus positive were enrolled in Cohort A, while patients with PD-L1-unselected malignant mesothelioma and PD-L1-unselected non-small cell lung cancer (NSCLC) were enrolled in Cohorts C and E, respectively. All patients in Cohorts A, C, and E received SG001 at a dose of 240mg every two weeks for 2 years or until disease progression, intolerable toxicities, or withdrawal of consent. The primary endpoint was the investigator-assessed overall response rate (ORR).
A total of 87 patients were enrolled: 33 in Cohort A, 24 in Cohort C, and 30 in Cohort E. Investigator-assessed ORR was 39.4% in Cohort A, 12.5% in Cohort C, and 16.7% in Cohort E; corresponding median PFS values were 9.6, 4.1, and 4.0 months. The most common treatment-related adverse events (TRAEs) were increased alanine aminotransferase (13.8%), proteinuria (12.6%), rash (12.6%), and increased aspartate aminotransferase (10.3%). No TRAEs leading to death were reported.
SG001 demonstrated promising activity in patients with pretreated advanced solid tumors, especially those with PD-L1-positive NSCLC. The safety profile was well tolerated.
ClinicalTrials.gov identifier: NCT03852823.
Authors
Fang Fang, Jiang Jiang, Li Li, Lin Lin, Fang Fang, Li Li, Zhao Zhao, Wang Wang, Shi Shi, Chen Chen, Yu Yu, Xing Xing, Zhao Zhao, Liu Liu, Wang Wang, Han Han, Xiang Xiang, Zhang Zhang, Li Li, Zhou Zhou
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