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Clinical Trial Summary

This phase I trial studies the side effects and best dose of anti-PD-L1/TGFbetaRII fusion protein M7824 (M7824) when given together with radiation therapy in treating patients with hormone receptor positive, HER2 negative breast cancer that has spread to other parts of the body. Radiation therapy uses high energy x-rays to kill tumor cells and shrink tumors. M7824 is a drug that targets specific proteins on immune cells in order to activate immune responses against tumor cells. Giving M7824 together with radiation therapy may work better in treating patients with breast cancer.


Clinical Trial Description

PRIMARY OBJECTIVES: I. To determine the recommended phase II dose (RP2D) of M7824 and radiation therapy in patients with metastatic hormone receptor positive (HR+)/HER2 negative (-) breast cancer. II. To evaluate the safety and tolerability of M7824 and radiation therapy in patients with metastatic HR+/HER2- breast cancer. SECONDARY OBJECTIVES: I. To assess immunologic/molecular responses, specifically percentage (%) change in tumor-infiltrating lymphocytes (TIL) pre and post therapy to M7824 and radiation therapy in patients with HR+/HER2- metastatic breast cancer. II. To explore progression free survival (PFS) and overall survival (OS) to power future definitive trial. III. To evaluate the in-field and abscopal effect of treatment with anti-PD-L1/TGF-beta trap (M7824) and radiation therapy. EXPLORATORY OBJECTIVES: I. To characterize the effect of anti-PD-L1/TGF-beta trap (M7824) and radiation therapy on immune biomarkers including PD-L1 expression and fibrosis changes in tumor microenvironment in tumor tissue obtained from subjects pre- and post-treatment. II. To characterize circulating immune cell populations and cytokine profiles in tumor and circulation following treatment with M7824. III. To conduct ribonucleic acid sequencing (RNAseq), RNA Scope, whole exome sequencing (WES) targeted sequencing and tissue IO gene expression. OUTLINE: Patients receive M7824 intravenously (IV) over 1 hour every 14 days. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Beginning within 3 days after second dose of M7824, patients undergo radiation therapy once a day (QD) for 5-10 days depending on the site of disease in the absence of disease progression or unacceptable toxicity. After completion of study treatment, participants are followed up for 90 days. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03524170
Study type Interventional
Source M.D. Anderson Cancer Center
Contact
Status Completed
Phase Phase 1
Start date April 30, 2018
Completion date February 10, 2022

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