KRAS and breast neoplasm: We performed sequencing analyses on a subset of the UNC breast tumors analyzed by microarray for EGFR mutations in exons 19 and 20, and for the common mutations in HRAS, KRAS and BRAF. No somatic sequence variants were detected in the 96 tumors that were analyzed, which were over sampled for basal-like and HER2+/ER- tumors.