RUNX1 and acute lymphoblastic leukemia: The described recurrent secondary genetic deletions in ETV6:RUNX1+ B-ALL in order from most to least frequent are deletions of 12p, 6q, 9p, 5q, 3p, 3q, 14q, 7p, 7q, 4q, 19q, 11q, 11p, 1q, 13q, and 8p, and the most common duplications are 4q, Xq [59,62,63,64,65].