Correlation analysis of miR-451a and HOXD9 mRNA expression in ATC tumor tissues of 40 patients were analyzed by Pearson correlation and the "miRNA-Target CoExpression" module analysis in starBase (https://starbase.sysu.edu.cn/panMirCoExp.php) (Fig. 4F, G). The gene discussed is HOXD9; the disease is neoplasm.