Integrative genomic and transcriptomic characterization of papillary carcinomas of the breast.

ABSTRACT: Papillary carcinoma (PC) is a rare type of breast cancer, which comprises three histologic subtypes: encapsulated PC (EPC), solid PC (SPC) and invasive PC (IPC). Microarray-based gene expression and Affymetrix SNP 6.0 gene copy number profiling, and RNA-sequencing revealed that PCs are luminal breast cancers that display transcriptomic profiles distinct from those of grade- and estrogen receptor (ER)-matched invasive ductal carcinomas of no special type (IDC-NSTs), and that the papillary histologic pattern is unlikely to be underpinned by a highly recurrent expressed fusion gene or a highly recurrent expressed mutation. Despite displaying similar patterns of gene copy number alterations, significant differences in the transcriptomic profiles of EPCs, SPCs and IPCs were found, and may accou

SUBMITTER: Piscuoglio S 

PROVIDER: S-EPMC5037246 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature