HNRNPA1 and colorectal carcinoma: This study revealed that hnRNPA1 binds with miR‐27b‐3p and mediates its transmission into exosomes, and silenced hnRNPA1 resulted in a lower miR‐27b‐3p level in mesenchymal CRC exosomes rather than altering the endogenous miR‐27b‐3p level.