Randomized, Double-Blind Phase Ib/III Study of Erlotinib With Ramucirumab or Placebo in Previously Untreated EGFR-Mutant Metastatic Non-Small-Cell Lung Cancer (RELAY): Phase Ib Results

Clinical Lung Cancer
Martin ReckKazuhiko Nakagawa

Abstract

Despite the likelihood of an initial response to an epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI), EGFR-mutant non-small-cell lung cancer (NSCLC) patients develop disease progression. Antiangiogenic agents in combination with an EGFR TKI might provide additional benefit in patients with EGFR-mutant NSCLC. In this article we report safety, exposure, and progression-free survival (PFS) results for part A (phase Ib) of RELAY, a randomized, double-blind, phase Ib/III study investigating safety and efficacy of erlotinib (EGFR TKI) with ramucirumab (anti-vascular endothelial growth factor receptor-2 antibody) or placebo in first-line EGFR-mutant stage IV NSCLC. Eligible patients had untreated stage IV NSCLC, Eastern Cooperative Oncology Group performance status of 0 to 1, and activating EGFR mutation (exon 19 deletion or exon 21 L858R substitution). Patients received ramucirumab 10 mg/kg on day 1 of a repeating 14-day cycle and erlotinib 150 mg/d. Treatment continued until disease progression or unacceptable toxicity. The primary objective was to assess safety and tolerability, in terms of dose-limiting toxicities (DLTs), during the first 2 cycles. Fourteen patients were treated and 12 were evaluable for DLT...Continue Reading

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