We examined associations of CCL2, CCR2, phospho-SMAD3 and phospho-p42/44MAPK with molecular subtype including: luminal A and B, HER2+ and triple negative breast cancers, which were identified using clinical guidelines on ER, PR, HER2 and Ki67/PCNA expression28–30. The gene discussed is ERBB2; the disease is triple-negative breast carcinoma.