BECN1 and neoplasm: As another line of evidence of autophagy‐mediated immune resistance, depletion of autophagy‐promoting Beclin 1 (BECN1) leads to increased intensity of chemokine (C‐C motif) ligand 5 (CCL5) expression within melanoma cells and redirects massive NK cells into the tumour microenvironment, thus leading to tumour suppression.18