obsolete_basal-like breast carcinoma true true Replaced by Mondo term MONDO_0004984, with which this term was previously merged. Use: http://purl.obolibrary.org/obo/MONDO_0004984 UMLS:C3642347 3.88.0 NCIT:C53558 basal-like breast carcinoma http://purl.obolibrary.org/obo/MONDO_0004984 basal-like subtype of breast carcinoma EFO:0000281 basal-like breast cancer A biologic subset of breast carcinoma defined by high expression of genes characteristic of basal epithelial cells, including KRT5 and KRT17, annexin 8, CX3CL1, and TRIM29, and usually by lack of expression of the estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2). It is the most common subtype of breast cancer associated with BRCA1 mutations, and is associated with a poor prognosis.