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Ref Type Journal Article
PMID (31502117)
Authors Kim SB, Meric-Bernstam F, Kalyan A, Babich A, Liu R, Tanigawa T, Sommer A, Osada M, Reetz F, Laurent D, Wittemer-Rump S, Berlin J
Title First-in-Human Phase I Study of Aprutumab Ixadotin, a Fibroblast Growth Factor Receptor 2 Antibody-Drug Conjugate (BAY 1187982) in Patients with Advanced Cancer.
Journal Targeted oncology
Vol 14
Issue 5
Date 2019 10
URL
Abstract Text Fibroblast growth factor receptor (FGFR) 2 is overexpressed in several tumor types, including triple-negative breast cancer and gastric cancer, both of which have a high unmet medical need. Aprutumab ixadotin (BAY 1187982) is the first antibody-drug conjugate (ADC) to target FGFR2 and the first to use a novel auristatin-based payload.This first-in-human trial was conducted to determine the safety, tolerability, and maximum tolerated dose (MTD) of aprutumab ixadotin in patients with advanced solid tumors from cancer indications known to be FGFR2-positive.In this open-label, multicenter, phase I dose-escalation trial (NCT02368951), patients with advanced solid tumors received escalating doses of aprutumab ixadotin (starting at 0.1 mg/kg body weight), administered intravenously on day 1 of every 21-day cycle. Primary endpoints included safety, tolerability, and the MTD of aprutumab ixadotin; secondary endpoints were pharmacokinetic evaluation and tumor response to aprutumab ixadotin.Twenty patients received aprutumab ixadotin across five cohorts, at doses of 0.1-1.3 mg/kg. The most common grade ≥ 3 drug-related adverse events were anemia, aspartate aminotransferase increase, proteinuria, and thrombocytopenia. Dose-limiting toxicities were thrombocytopenia, proteinuria, and corneal epithelial microcysts, and were only seen in the two highest dosing cohorts. The MTD was determined to be 0.2 mg/kg due to lack of quantitative data following discontinuations at 0.4 and 0.8 mg/kg doses. One patient had stable disease; no responses were reported.Aprutumab ixadotin was poorly tolerated, with an MTD found to be below the therapeutic threshold estimated preclinically; therefore, the trial was terminated early. CLINICALTRIALS.NCT02368951.

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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
BAY1179470 BAY 1179470|BAY-1179470|Aprutumab FGFR2 Antibody 3 BAY1179470 (Aprutumab) is an FGFR2 monoclonal antibody, which causes receptor internalization and degradation, thereby possibly inhibiting proliferation and promoting apoptosis in cancer cells (Cancer Res October 1, 2014 74; DDT02-01, PMID: 31502117).
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 no benefit Aprutumab ixadotin Phase I Actionable In a Phase I trial, Aprutumab ixadotin (BAY1187982) was poorly tolerated, resulted in no objective response (0/20) and 1 stable disease in patients with advanced solid tumors known to be FGFR2-positive, and the trial was terminated early as a result (PMID: 31502117; NCT02368951). 31502117