ERBB2 and breast carcinoma: Recent work showed that Tzb-resistant HER2-positive breast cancer cells (SKBR3 cell line) exhibit increased basal autophagy through an increase in LC3-II expression compared to Tzb-naïve SKBR3 parental cells, suggesting that acquired Tzb autoresistance of Tzb-conditioned cells is accompanied by increased autophagy.