MUC4 and thyroid gland carcinoma: One study using polyclonal anti-MIUC4 antibody reported that MUC4 expression is related to a fovorabel outcome [19], three studies show no correlation between MUC4 expression and prognosis [20], [21], [22], the other three studies did not have any comments on the correlation between MUC4 expression and prognosis [18], [23], [24], and the remaining one study of thyroid cancer reported no MUC4 expression in the cancer [25].