A patient's tumor was considered triple negative (TNBC) if ER and PgR were both absent and HER2 status was negative; HER2-overexpression if ER and PgR were both absent and HER2 was positive; luminal A if ER- and/or PgR-positive, HER2-negative, and Ki-67 less than 14%; or luminal B if ER- and/or PgR-positive, HER2-negative, and Ki-67 ≥ 14% or if ER- and/or PgR-positive and HER-2 was positive. The gene discussed is ERBB2; the disease is neoplasm.