The Association between EGFR and cMET Expression and Phosphorylation and Its Prognostic Implication in Patients with Breast Cancer

Young Kwang Chae, Debora de Melo Gagliato, Sachin Gopalkrishna Pai, Benedito Carneiro, Nisha Mohindra, Francis Joseph Giles, Praveen Ramakrishnan-Geethakumari, Joohyuk Sohn, Shuying Liu, Huiqin Chen, Naoto Ueno, Gabriel Hortobagyi and Ana Maria Gonzalez-Angulo

PLOS ONE, 2016, vol. 11, issue 4, 1-12

Abstract: EGFR and cMET cross-talk is involved in breast cancer (BC) progression and resistance to different targeted therapies, however little is known about the co-expression patterns of EGFR and cMET or its prognostic significance in BC. Protein levels of EGFR, cMET and their phosphorylated proteins were measured in 825 BC samples using reverse phase protein array (RPPA). Given unimodal distribution of proteins, the median was selected as a cut-off after sensitivity analyses. Kaplan-Meier survival curves were used to estimate relapse-free (RFS) and overall survival (OS). Cox-proportional hazards models were utilized to determine associations between EGFR and cMET with outcomes. Mean age was 58 years with 457 (55%) hormone receptor (HR) positive, 211 (26%) triple-negative (TN) and 148 (18%) HER2 positive tumors (HER2+). HER2+ was associated with higher EGFR expression and phosphorylation, compared to HR and TN (p

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0152585

DOI: 10.1371/journal.pone.0152585

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