CD34 and acute lymphoblastic leukemia: The other entity – Early T-precursor lymphoblastic leukaemia/lymphoma (ETP-ALL/LBL) – is recognized by cyCD3+, CD7+, CD8-, CD1a-, CD5lo (less than 75 % of blasts positive), and co-expression of one or more stem cell or myeloid markers (in ≥ 25 % of blasts) including CD13, CD33, CD34, CD117 or HLA-DR [37].