CD19 and leukemia: The same trend was observed in most of the international studies where CD7 was most commonly expressed aberrant antigen followed by CD19.2,8,14,16,20 CD7 expression in AML is correlated with lower incidence of complete remission.2 According to Belurkar et al., expression of lymphoid associated antigens except CD7, on AML blasts lack prognostic significance and CD7 + AML is a particular subset but in general, it may not represent a biologically distinct form of leukemia since these cases have similar clinical features and a comparable response to therapy.21