Gastric Adenocarcinoma Clinical Trial
Official title:
Phase 2 Study of Epacadostat (INCB024360) With Pembrolizumab (MK3475) in Metastatic or Unresectable Gastroesophageal Junction and Gastric Adenocarcinoma Requiring Paired Biopsies
This phase 2 trial evaluates the benefit of epacadostat plus pembrolizumab in combination to treat patients with gastroesophageal junction or gastric cancer that has spread to other parts of the body and cannot be removed by surgery. Epacadostat may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Monoclonal antibodies, such as pembrolizumab, may block tumor growth in different ways by targeting certain cells. Giving epacadostat and pembrolizumab may work better in treating patients with gastroesophageal junction or gastric cancer.
Patients receive epacadostat orally (PO) twice daily (BID) on Days 1 to 21 and pembrolizumab intravenously (IV) over 30 minutes on Day 1. Courses repeat every 21 days for up to 24 months in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up at 30 days, every 9 weeks for 18 months, and then every 12 weeks thereafter. PRIMARY OBJECTIVES: Assess 6-month progression free survival (PFS). SECONDARY OBJECTIVES: - To evaluate objective response rate (RR) by Response Evaluation Criteria in Solid Tumors (RECIST) version (v) 1.1 and immune-related response criteria (irRC). - Evaluate overall survival (OS). - Assess the safety and tolerability of epacadostat in combination with pembrolizumab by National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) v4.03. TERTIARY OBJECTIVES: - Determine the responder rate defined as the proportion of subjects with an increased ratio of CD8+ to Treg cells in on-treatment compared with pre-treatment biopsies. - Identify putative immunologic biomarkers of tumor response. ;
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