miR-3619-3p is upregulated in human PTC tissues and cell lines. (A) The relative expression level of miR-3619-3p was significantly up-regulated in PTC tissues compared with corresponding adjacent non-tumor tissues by qRT-PCR (n=36); (B) the expression of miR-3619-3p in PTC cell lines was higher compared to the normal N-thy-ori 3-1 cells. The data represent the mean ± SD from three independent experiments. *, P<0.05, **, P<0.01. PTC, papillary thyroid carcinoma; qRT-PCR, quantitative real-time polymerase chain reaction.