ESR1 and myeloid leukemia: High expression of Tn or STn antigens were detected on estrogen receptor positive cell lines MCF7, T47D, KPL1 and BT474, whereas the estrogen receptor negative cell lines MDA-MB-468 and MDA-MB-231(triple negative), SK-BR3 (Her2 positive),the non-tumorigenic epithelial cell line MCF10A and the myelogenous leukemia cell line K562 showed lower expression or were negative (Fig. 3B).