CREBBP and diffuse large B-cell lymphoma: Somatic CREBBP mutations cause functional loss of the acetyltransferase activity and are frequent in DLBCL (6–22%) and follicular lymphoma (31–68%), with more than 40% of the cases in germinal center B-cell-like (GCB)-DLBCL and 17% in activated B-cell-like (ABC)-DLBCL [7–9].