Table 1.

Myelodysplasia-related cytogenetic abnormalities (adapted from Arber, D.A., et al. Blood 2016.).

Complex Karyotype-3 or More Abnormalities Balanced Translocations
t(5; 10)(q32; q21.2)
t(3; 5)(q25.3; q35.1)
t(5; 17)(q32; p13.2)
t(5; 7)(q32; q11.2)
t(5; 12)(q32; p13.2)
t(2; 11)(p21; q23.3)
t(1; 3)(p36.3; q21.2)
t(3; 21)(q26.2; q22.1)
t(11; 16)(q23.3; p13.3)
Unbalanced Translocations
del(12p)/t(12p)
idic(X)(q13)
del(11q)
−13/del(13q)
i(17q)/t(17p)
del(5q)/t(5q)
−7/del(7q)

Del(9q) was removed as a myelodysplasia-related cytogenetic abnormality in the 2016 revision of the WHO classification of myeloid neoplasms and acute myeloid leukemia (AML).