Our data suggest that neoplasms carrying the t(12;22)/MN1-ETV6, although rare, can commonly present as myeloid neoplasms at the initial diagnosis, including acute myeloid leukemia (n = 8), myelodysplastic syndrome (n = 2), and myelodysplastic/myeloproliferative neoplasms (n = 2).
Thirty-eight MDS patients fulfilling WHO criteria and classified according to risk scores were evaluated at time 0 (T0) and after 12 months (T12) for: Treg suppression activity in coculture with T effector (Teff) cells; IRF-1 and Foxp3 genetic expression by qRT-PCR; IL-2, -4, -6, -10, -17, TNFα and IFNγ production by Cytometric Bead Array.
AML1/RUNX1 at 21q22 is involved in t(8;21), t(3;21), and t(16;21) in de novo and therapy-related AML and myelodysplastic syndrome as well as in t(12;21) in childhood B cell acute lymphoblastic leukemia.