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Table 1 Clinical characteristics of all patients and stratified by D5 peripheral blast clearance rate (D5-PBCR)

From: Clinical significance of day 5 peripheral blast clearance rate in the evaluation of early treatment response and prognosis of patients with acute myeloid leukemia

Characteristics

All patients ( n = 96) a

D5-PBCR ≥99.55% ( n = 37)

D5-PBCR <99.55% ( n = 57)

P value

Age, y, median (range)

44.5 (14–74)

44 (15–67)

45 (14–74)

0.467

Gender (no.)

0.996

 Male

61

24

37

 

 Female

35

13

20

 

WBC count (×109/L), median (range)

13.3 (1.32–249.90)

26.99 (3.2–120.9)

9.20 (1.32–249.90)

0.160

Hemoglobin (g/L), median (range)

85.0 (34.90–136.00)

89.5 (55.0–136.0)

82.0 (34.9–125.0)

0.051

Platelet (×109/L), median (range)

38.0 (3.00–455.00)

38.5 (6.0–179.0)

36.0 (3.0–221.0)

0.975

Blasts in bone marrow (%), median (range)

65.0 (14.50–98.00)

71.0 (21.5–96)

60.1 (14.5–98.0)

0.038

Blasts in peripheral blood (/μL), median (range)

3730.7 (11.32–246,000)

4961.7 (479.9–124,900)

3730.7 (11.32–246,000)

0.035

FAB subtypes (no.)

0.229

 M1

2

1

1

 

 M2

24

5

18

 

 M4

43

19

24

 

 M4Eo

2

2

0

 

 M5

19

7

11

 

 M6

1

1

0

 

 NA

5

2

3

 

Cytogenetic-molecular risk group (no.)

0.045

 Favorable

23

12

11

0.148

 Intermediate

53

22

30

0.515

 Unfavorable

20

3

16

0.019

LAIP (no.)

-

Cross-lineage antigen expression

63

29

34

 

Asynchronous antigen expression

6

0

6

 

Antigen dim/strong expression

13

6

6

 

Antigen expression missing

8

4

3

 

CR (%)

67 (69.79)

35 (94.6)

32 (56.1)

<0.001

MRD (+) (%)b

29 (55.77)

14 (50)

15 (62.5)

0.366

Relapse (%)

26 (32.50)

7 (19.44)

18 (42.86)

0.027

  1. NA not available, CR achieved complete remission after one course of induction therapy, LAIP leukemia-associated aberrant immunophenotype, FAB French-American-British, MRD minimal residual disease. aTwo patients lacking in the peripheral blast absolute counts data of day 5 could not be further stratified into different groups according to D5-PBCR; bMRD (+): In 67 patients achieved CR, LAIPs were detectable in 52 cases.