CD19 and diffuse large B-cell lymphoma: As CD19 is also expressed in B-cell NHL′s, CD19 CAR T-cells have been studied in single and multicenter studies for the treatment of some forms of R/R B-cell NHL like follicular lymphoma, transformed follicular lymphoma, diffuse large B-cell lymphoma and primary mediastinal B-cell lymphoma with encouraging results [4,5,28].