Immunofluorescence staining with an antibody against ANO1 revealed high expression of ANO1 in one ATC sample among 4 different patient-derived samples (Figure 1C and E), while ANO1 expression was scarcely observed in all thyroid nodular hyperplasia and papillary thyroid carcinoma samples (each 20 samples; Figure 1A, B and D). Here, ANO1 is linked to thyroid gland papillary carcinoma.