Clinical Proteomics of Breast Cancer Reveals a Novel Layer of Breast Cancer Classification.

ABSTRACT: Breast cancer classification has been the focus of numerous worldwide efforts, analyzing the molecular basis of breast cancer subtypes and aiming to associate them with clinical outcome and to improve the current diagnostic routine. Genomic and transcriptomic profiles of breast cancer have been well established, however the proteomic contribution to these profiles has yet to be elucidated. In this work, we utilized mass spectrometry-based proteomic analysis on more than 130 clinical breast samples to demonstrate intertumor heterogeneity across three breast cancer subtypes and healthy tissue. Unsupervised analysis identified four proteomic clusters, among them, one that represents a novel luminal subtype characterized by increased PI3K signaling. This subtype was further validated using an

SUBMITTER: Yanovich G 

PROVIDER: S-EPMC6193543 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature