Table 1. Chromosomal aberrations in MDS.

Aberration type	Position	Significance	Reference
del(5q)	5q31	AML evolution	21
trisomy 8	cT8M	intermediate-risk	38,39
del(20q)	20q11.2- q13.1	exacerbate malignancy	46,47
del (7q)	7q22, 7q34	contribute to hematopoietic aberration	56
monosomy 7	-7	higher-risk, poor prognosis	66–68
complex karyotype	multiple	unfavorable outcome	76