Total cases (n=200) Low expression group (n=100) High expression group (n=100) p
Age (years) 42.32 ± 10.675 40.75 ± 10.240 43.90 ± 10.917 0.037
Sex
Males
Females

106 (53%)
94 (47%)

49 (49%)
51 (51%)

57 (57%)
43 (43%)

0.257
Fever 144 (72.0%) 76 (76%) 68 (68%) 0.208
Infection
128 (64.0%) 66 (66%) 62 (%) 0.556
Bleeding 96 (48.0%) 45 (45%) 51 (51%) 0.396
Lymphadenopathy 112 (56.0%) 53 (53%) 59 (59%) 0.393
Hepatomegaly 84 (42.0%) 46 (46%) 38 (38%) 0.252
Splenomegaly 100 (50.0%) 55 (55%) 45 (45%) 0.157
Mediastinal mass 5 (2.5%) 2 (2%) 3 (%) 0.651
WBC (X109/l) 55.40 ± 65.670 44.50 ± 44.052 66.30 ± 80.548 0.019
Hb (g/dl) 9.5676 ± 2.17064 9.7754 ± 2.07674 9.3598 ± 2.25185 0.176
Platelets (X109/l) 42.79 ± 61.462 37.17 ± 51.071 48.41 ± 70.150 0.197
Peripheral blasts (%) 53.98 ± 21.502 54.75 ± 23.255 53.21 ± 19.680 0.614
Marrow blasts (%) 69.44 ± 20.734 71.44 ± 19.864 67.44 ± 21.483 0.173
LDH (u/l) 1011.4 ± 912.10 837.43 ± 635.88788 1185.4 ± 1098.53183 0.007
Immunophenotype        
 CD34 133 (66.5%) 58 (58.0%) 75 (75.0%) 0.011
Immunophenotype subtypes       0.202
Pro B ALL
Common B ALL
Pre B ALL
16 (8.0%) 7 (7.0%) 9 (9.0%)
144 (72.0%) 68 (68.0%) 76 (76.0%)
40 (20.0%) 25 (25.0%) 15 (15.0%)
BCR- ABL        
 Positive
Negative
67 (33.5%) 25 (25.0%) 42 (42.0%) 0.011
133 (66.7%) 75 (75.0%) 58 (58.0%)
Age, WBC, Hb, platelats, blasts, LDH and uric acid were presented by mean ± SD. Clinical presentations, immunophenotype and gender were presented by number and percentages. WBC: White Blood Cell Count;Hb: Hemoglobin Concentration; LDH: Lactate Dehydrogenase.
Table 1: Clinical, laboratory and molecular characteristics at diagnosis according to BAALC expression in B-precursor ALL.