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Molecular Correlates of Response to Eribulin and Pembrolizumab in Hormone Receptor-positive Metastatic Breast Cancer

Abstract

Immune checkpoint inhibitors (ICIs) have minimal therapeutic effect in hormone receptor-positive (HR+ ) breast cancer. We present final overall survival (OS) results (n = 88) from a randomized phase 2 trial of eribulin ± pembrolizumab for patients with metastatic HR+ breast cancer, computationally dissect genomic and/or transcriptomic data from pre-treatment tumors (n = 52) for molecular associations with efficacy, and identify cytokine changes differentiating response and ICI-related toxicity (n = 58). Despite no improvement in OS with combination therapy (hazard ratio 0.95, 95% CI 0.59-1.55, p = 0.84), immune infiltration and antigen presentation distinguished responding tumors, while tumor heterogeneity and estrogen signaling independently associated with resistance. Moreover, patients with ICI-related toxicity had lower levels of immunoregulatory cytokines. Broadly, we establish a framework for ICI response in HR+ breast cancer that warrants diagnostic and therapeutic validation. ClinicalTrials.gov Registration: NCT03051659.

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References
1.
Newman A, Steen C, Liu C, Gentles A, Chaudhuri A, Scherer F . Determining cell type abundance and expression from bulk tissues with digital cytometry. Nat Biotechnol. 2019; 37(7):773-782. PMC: 6610714. DOI: 10.1038/s41587-019-0114-2. View

2.
. Comprehensive molecular portraits of human breast tumours. Nature. 2012; 490(7418):61-70. PMC: 3465532. DOI: 10.1038/nature11412. View

3.
Dirix L, Takacs I, Jerusalem G, Nikolinakos P, Arkenau H, Forero-Torres A . Avelumab, an anti-PD-L1 antibody, in patients with locally advanced or metastatic breast cancer: a phase 1b JAVELIN Solid Tumor study. Breast Cancer Res Treat. 2017; 167(3):671-686. PMC: 5807460. DOI: 10.1007/s10549-017-4537-5. View

4.
Sobral-Leite M, Salomon I, Opdam M, Kruger D, Beelen K, van der Noort V . Cancer-immune interactions in ER-positive breast cancers: PI3K pathway alterations and tumor-infiltrating lymphocytes. Breast Cancer Res. 2019; 21(1):90. PMC: 6686400. DOI: 10.1186/s13058-019-1176-2. View

5.
George S, Miao D, Demetri G, Adeegbe D, Rodig S, Shukla S . Loss of PTEN Is Associated with Resistance to Anti-PD-1 Checkpoint Blockade Therapy in Metastatic Uterine Leiomyosarcoma. Immunity. 2017; 46(2):197-204. PMC: 5408320. DOI: 10.1016/j.immuni.2017.02.001. View