Table 2.

Patient and disease characteristics.

Variable	Median (range) or N
Age at transplant (years)	34 (16–57)
Disease diagnosis
AML	33
ALL Ph−	14
ALL Ph+	2
biphenotypic	1
undifferentiated	1
Disease status at time of alloHSCT
1 RL	14
2 RL	3
IF	34
Cytogenetic risk (SWOG criteria), AML
favorable	0
intermediate	19
unfavorable	14
Cytogenetic risk (SWOG criteria), ALL
favorable	1
intermediate	7
unfavorable	5
unknown significance	3
Risk score*	3 (0–6)
KPS at HSCT	80 (60–100)
Donor source
sibling	25
HLA matched unrelated	5
mismatched (1 allele) unrelated	21
WBC at HSCT	1.4 (0.1–14.9)
% Blasts in blood at transplant**	5 (0–85)
% Blasts in marrow at transplant**	52 (5–98)
Extramedullary disease at time of HSCT	9

AML=acute myeloid leukemia, ALL=acute lymphoblastic leukemia, Ph=Philadelphia chromosome, alloHSCT=allogeneic hematopoietic stem cell transplantation, RL=relapse, IF=induction failure, KPS=Karnofsky Performance Status, HLA=human leukocyte antigen, WBC=white blood cell count.

^*Scoring based on criteria by Duval et al.¹

^**Excludes patients with solely extramedullary disease (Blasts in BM < 5%), n=4