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. Author manuscript; available in PMC: 2014 Jul 23.
Published in final edited form as: Leukemia. 2011 Jun 7;25(10):1555–1563. doi: 10.1038/leu.2011.128

Table 1.

Patient and sample characteristics.

Type of case Mean age in years (range) Gender, number (%) NCI risk group, number (%) Mean initial WBC, 103/μl (range) Mean % blasts in sample (range) Total cases SNP array cases Methylation array cases Expression array cases
DS-ALL 6.5 (2.0–17.0) 31 female (53.4) 27 male (46.6) 22 HR (42.3) 30 SR (57.7) 57.5 (80.3) 86.1 (9.9) 58 50 11 23
DS paired germline - - - - - 23 23 0 0
NDS ALL 6.5 (1.0–16.0) 31 female (45.6) 37 male (54.4) 31 HR (47.7) 34 SR (52.3) 51.9 (3.0, 765) 81.4 (46, 100) 68 65 7 26
NDS paired germline - - - - - 12 12 0 0

DS indicates Down syndrome; ALL, acute lymphoblastic leukemia; NDS, non-Down syndrome; NCI, National Cancer Institute; WBC, white blood count; SNP, single nucleotide polymorphism; HR, high risk; and SR, standard risk.