Ph1b/2 Dose-Escalation Study of Entinostat With Pembrolizumab in NSCLC With Expansion Cohorts in NSCLC, Melanoma, and Colorectal Cancer

Non-Small Cell Lung Cancer Clinical Trial

Official title: A Phase 1b/2, Open-label, Dose Escalation Study of Entinostat in Combination With Pembrolizumab in Patients With Non-small Cell Lung Cancer, With Expansion Cohorts in Patients With Non-small Cell Lung Cancer, Melanoma, and Mismatch Repair-Proficient Colorectal Cancer

Status Completed

Clinical Trial Summary

The purpose of this study is to determine the safety and tolerability of entinostat used in combination with pembrolizumab in patients with Non-small Cell Lung Cancer. Additionally, the purpose of the study is to assess how effective entinostat and pembrolizumab are in combination in patients with Non-small Cell Lung Cancer, Melanoma, and Mismatch-Repair Proficient Colorectal Cancer

Clinical Trial Description

SNDX-275-0601 is an open-label, Phase 1b/2 study evaluating the combination of entinostat plus pembrolizumab in patients with advanced metastatic or recurrent NSCLC or melanoma or mismatch repair-proficient colorectal cancer. The study has 2 phases, a Dose Escalation/Confirmation Phase (Phase 1b) and an Expansion Phase (Phase 2). An additional cohort (Entinostat Monotherapy Immune Correlate [EMIC] Cohort) evaluating single agent entinostat for 2 weeks followed by the combination will also be evaluated in patients with NSCLC in the Phase 2 expansion phase. Toxicities will be assessed by the Investigator using the United States (US) National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE), version 4.03. Dose Confirmation: The prospective MTD/RP2D identified in the Dose Escalation Phase will be confirmed in 9 patients in Dose Confirmation Cohort(s) to obtain additional AE, immune correlate, and anti-tumor activity data on entinostat in combination. Phase 2 (Expansion): In the Expansion Phase, entinostat in combination will be evaluated using the RP2D identified in the Dose Escalation/Confirmation Phase. Up to 3 Expansion Cohorts consisting of distinct subsets of patients with solid tumor cancers may be explored. Expansion cohorts may include: 1. Cohort 1: NSCLC 2. Cohort 2: Patients with NSCLC (any histology) who have previously been treated and responded and then progressed on either a PD-1 or PD-L1-blocking antibody 3. Cohort 3: Patients with melanoma who have previously been treated with and unequivocally progressed on either a PD-1 or PD-L1-blocking antibody 4. Cohort 4: Patients with CRC (mismatch repair-proficient) who have not been previously treated with a PD-1 or PD-L1 blocking antibody EMIC Cohort: 15 NSCLC patients Stage 2 of Cohort 1 will be randomly assigned to participate. ;

Related Conditions & MeSH terms

• Carcinoma, Non-Small-Cell Lung
• Colorectal Neoplasms
• Lung Neoplasms
• Melanoma
• Mismatch Repair-Proficient Colorectal Cancer
• Non-Small Cell Lung Cancer

• NCT number: NCT02437136
• Study type: Interventional
• Source: Syndax Pharmaceuticals
• Status: Completed
• Phase: Phase 1/Phase 2
• Start date: July 2015
• Completion date: September 29, 2022