Table 4.

CIBMTR Cytogenetics Grouping Schema

Group	Abnormality	HRb	p value
Favorable	Inv(16) (without complex karyotype)	0.5	0.030
	Normal	1.0	Reference
	t(8;21)	1.1	0.8
	11q23 abnormality	1.1	0.7
Intermediate	Trisomy/tetrasomy 8	1.2	0.5
	Abnormal 5 or 7	1.3	0.3
	Complex (3 abnormalities)	1.1	0.7
	Inv(16) with complex karyotype	1.0	1.0
	Other abnormalitiesa	1.1	0.7
Adverse	Complex (4 abnormalities)	1.5	0.10
	Complex (5+ abnormalities)	2.3	<0.0001

^aExcept for abn12p, abn3q, del(9q), t(1;19), t(9;22), t(6;9), which are not classified in this schema

^bCompared to normal karyotype