The HOXA1 mRNA is translated to yield HOXA1 protein (Chen et al. 2013, Chen et al. 2014). MicroRNAs miR-10a (Garzon et al. 2006), let-7c (Zhan et al. 2013), miR-99 (Chen et al. 2013) and miR-100 (Chen et al. 2014) negatively regulate translation in adult cells, however their roles in embryonic cells are unknown.