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Spots Global Cancer Trial Database for EZH2 Inhibitor, Tazemetostat, and PD-1 Blockade for Treatment of Advanced Non-small Cell Lung Cancer

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Trial Identification

Brief Title: EZH2 Inhibitor, Tazemetostat, and PD-1 Blockade for Treatment of Advanced Non-small Cell Lung Cancer

Official Title: Phase Ib/II Study of Safety and Efficacy of EZH2 Inhibitor, Tazemetostat, and PD-1 Blockade for Treatment of Advanced Non-small Cell Lung Cancer

Study ID: NCT05467748

Interventions

Tazemetostat

Study Description

Brief Summary: This is an open label, single arm, phase Ib/II clinical trial of checkpoint blockade, pembrolizumab and EZH2 inhibitor, tazemetostat combination therapy for patients with advanced non-small cell lung cancer who have progressed from front or second-line treatment. Patients will be enrolled at multiple Veterans Affairs Medical Centers.

Detailed Description: It is pleasing to witness the fulfillment of the promise of cancer immunotherapy becoming a reality for patients with many types of advanced cancer. However, even with this remarkable progress, majority of patients are not responding and substantial number of patients are progressing after initial response to checkpoint blockade immunotherapy. The field is undertaking major task to identify suitable combinatorial approach to improve the efficacy of checkpoint blockade immunotherapy and biomarker for better patient selection. Evidence suggests that EZH2 (Enhancer Zeste Homolog: enzymatic component of Polycomb Repressive Complex 2) plays a significant role in prognosis of patients with non-small cell lung cancer and animal studies showed that EZH2 targeting can improve the efficacy of immunotherapy. Based on this, it was hypothesized that EZH2 inhibitor, tazemetostat can re-sensitive cancer cells to respond to PD-1 blockade, pembrolizumab and designed phase Ib/II single arm, open label study to test this hypothesis for patients with advanced non-small cell lung cancer who progressed from front or second line of therapy (expecting majority of patients experienced checkpoint blockade immunotherapy). The primary objectives of this study are safety/tolerability and Objective Response Rate (ORR: Complete Response and Partial Response) evaluated by RECIST v1.1. Key secondary objectives are disease control rate, progression free survival at 1 year, and duration of response. The study will employ safety lead-in phase Ib using 3+3 standard dose escalation scheme with 3 dose levels for tazemetostat, starting 400, up to 600 and 800 mg orally twice daily. Tazemtostat will be administered for 7 days prior to pembrolizumab 200 mg intravenous every 3 weeks that is defined as run-in phase (only prior to first cycle). It is estimated that 6 to 18 patients will be enrolled to determined recommended dose for phase II (RP2D). The sample size for phase II was calculated using Simon optimum two-stage design in order to determine the futility at early time. In the first stage, 15 subjects will be enrolled. If 2 or more responses are observed, an additional 39 subjects will be accrued during second phase. If in total there are 8 or more responses, we will consider the drug combination worthy of further clinical development, provided other factors such as toxicity and progression-free survival also appear favorable. For this phase II portion, up to 54 subjects are enrolled. This design has a one-sided alpha of 5% and a power of 80%. Planned duration of enrollment is 2 years, correlative studies (methyl marker: H3K27me3 and PD-L1, exome, RNA, circulating ctDNA sequencing and immune monitoring) are proposed using tumor biopsies (on treatment biopsy is optional) and blood samples before and after the treatment.

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

VA Greater Los Angeles Healthcare System, West Los Angeles, CA, West Los Angeles, California, United States

Contact Details

Name: Daniel S Shin, MD PhD

Affiliation: VA Greater Los Angeles Healthcare System, West Los Angeles, CA

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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