Recent study reveals that Vav1‐MYO1F alters T‐cell differentiation and leads to accumulation of tumour‐associated macrophages in the tumour microenvironment, proven to be a feature linked with aggressiveness in human peripheral T‐cell lymphoma (PTCL).49 The gene discussed is VAV1; the disease is mature T-cell and NK-cell non-Hodgkin lymphoma.