In addition to breast cancer, KRT81 has also been examined in other cancer types including non‐Hodgkin's lymphoma,[14, 17] gastric cancer,[15, 18] melanoma,[19] and pancreatic ductal adenocarcinoma (PDAC).[16] In PDAC, KRT81 is being investigated as a marker for an aggressive subtype.[16] However, many of the primers, probes, and antibodies used in these studies cannot differentiate between the full‐length and truncated isoforms. The gene discussed is KRT81; the disease is breast cancer.