Table 2 Treatment response by age groups of the 48 enrolled patients

dexamethasone induction (n = 48)

 Negative

6

14

0.5461

 Positive

12

16

 DGR

11

18

 > 0.9999

 DPR

7

12

BM status at TP1^a(n = 47)

 M1

16

28

 > 0.9999

 M2 or M3

1

2

FCM-MRD level at TP1^a (n = 47)

  < 0.01%

6

18

0.1351

  ≥ 0.01%

11

12

  < 1%

12

19

0.7526

  ≥ 1%

5

11

PCR-MRD level at TP1^a (n = 47)

 Negative

6

10

 > 0.9999

 Positive

11

20

BM status at TP2^a(n = 45)

 CR

12

28

0.1073

 Not CR

3

1

FCM-MRD level at TP2^a (n = 45)

  < 0.01%

6

21

0.0526

  ≥ 0.01%

9

8

PCR-MRD level at TP2^a (n = 45)

 Negative

7

17

0.5213

 Positive

8

11

Treat related mortality (n = 48)

 Yes

3

1

0.1415

 no

15

29