CDKN1A and melanoma: The above‐described proproliferative and anti‐apoptotic function of ZNF224 in melanoma cell lines prompted us to investigate whether the increased p21 expression, observed in A375 cells, could be a suitable cause of ZNF224‐induced proliferation, which leads to the dramatic increase of melanoma cell growth, rather than to cell cycle arrest and induction of apoptotic events.