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Ref Type Journal Article
PMID (31164456)
Authors Oh DY, Lee KW, Han SW, Kim JW, Shin JW, Jo SJ, Won J, Hahn S, Lee H, Kim WH, Bang YJ
Title A First-in-Human Phase I Study of GC1118, a Novel Anti-Epidermal Growth Factor Receptor Antibody, in Patients with Advanced Solid Tumors.
Journal The oncologist
Vol
Issue
Date 2019 Jun 04
URL
Abstract Text GC1118 is a novel fully human anti-epidermal growth factor receptor (EGFR) antibody with unique binding epitopes and different ligand-binding inhibitory activity compared with cetuximab or panitumumab.GC1118 showed promising antitumor activity, especially in patients with colorectal cancer resistant to prior EGFR antibody. Skin toxicities were more common and diarrhea was less frequent compared with other anti-EGFR antibodies.GC1118 is a novel monoclonal antibody targeting epidermal growth factor receptor (EGFR) with more potent ligand inhibition than cetuximab or panitumumab. We conducted a first-in-human, phase I study of GC118 in patients with refractory solid tumors.In the dose escalation part, GC1118 was administered on days 1, 8, 15, and 22, followed by a 2-week rest, during which dose-limiting toxicities (DLTs) were evaluated. In the expansion part, patients were enrolled into three cohorts (Cohort 1 [C1], patients with colorectal cancer [CRC] without prior anti-EGFR treatment; Cohort 2 [C2], patients with CRC with tumors resistant to anti-EGFR therapy; Cohort 3 [C3], EGFR-overexpressing gastric cancer).In the dose escalation part, 24 patients were treated at five dose levels: 0.3, 1.0, 3.0, 4.0, and 5.0 mg/kg. In the 5.0 mg/kg cohort, two patients experienced DLTs (skin toxicities). The maximum-tolerated dose (MTD) was 4.0 mg/kg. Common adverse events were skin toxicities. In the expansion part, 39 patients were enrolled. In Cohort 1, stable disease (SD) was observed in 58%; in Cohort 2, partial response (PR) 17% and SD 8%; in Cohort 3, PR 8% and SD 17%.GC1118 showed promising antitumor activity and was well tolerated. Infrequent diarrhea compared with other anti-EGFR antibodies might be advantageous for further development.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
Unknown unknown Advanced Solid Tumor not applicable GC1118 Phase I Actionable In a Phase I clinical trial, treatment with GC1118 was well-tolerated, and resulted in partial response in 13% (3/24) and stable disease in 50% (12/24) of patients with advanced solid tumors (PMID: 31164456; NCT02352571). 31164456
Unknown unknown colorectal cancer not applicable GC1118 Phase I Actionable In a Phase I clinical trial, treatment with GC1118 resulted in no responses, but stable disease in 58% (7/12), and a median progression-free survival (PFS) of 14 weeks in patients with metastatic colorectal cancer with no prior anti-EGFR therapy, and resulted in an overall response rate of 17% (2/12; all partial responses), stable disease in 8% (1/12), and median PFS of 6.9 weeks in patients with metastatic colorectal cancer with resistance to anti-EGFR therapy (PMID: 31164456; NCT02352571). 31164456