(1)CARTPT, MUC2 and TFF1 genes upregulated in MC.(2)Neurotransmitter release-related pathways (including GABA) upregulation and amplification of 6p25.2, 6q12 and 11q12.3 in MC.(3)MC cases—older, lower G and N tumor stage, higher % of positive ER and PR, lower % of positive HER2 and less cases treated with radiation, chemotherapy and mastectomy compared to IDC. The gene discussed is ERBB2; the disease is neoplasm.