PIWIL2 and differentiated thyroid carcinoma: There has been a significant body of statistics collected on the presence of PIWIL2 protein and its mRNA transcript in various types of cancers including breast tumors [21], [22], acute myeloid leukemia [87], papillary thyroid carcinoma [26], as well as colorectal [31], colon [24], [27], gastric [25], ovarian [32] and cervical cancers [23], [28].