CD274 and diffuse large B-cell lymphoma: In DLBCL cells, miR‐155 targets the AKT/ERK signalling pathway to down‐regulate PD‐L1 expression,24 while miR‐340‐5p regulates the ubiquitination of CD73,25 both of which modulate the infiltration and anti‐tumour activity of CD8+ T cells.