MUC1 and triple-negative breast carcinoma: A study investigating MUC1 expression in 52 cases of early-stage triple-negative breast cancer (TNBC) found that 94% of the cases were MUC1-positive, with 67% exhibiting moderate to strong MUC1 expression, 27% demonstrating weak MUC1 expression, and 6% lacking MUC1 expression [18].