The T- and CD8+ T cell infiltration ranged from 55 to 9832 cells/mm2 between individual pediatric AML cases, with a subset showing high T- and CD8+ T cell infiltration in the BM (above median of non-leukemic controls; n = 22 and n = 18, respectively; Fig. 1D, E). The gene discussed is CD8A; the disease is acute myeloid leukemia.