Table 3 Comparison of transplant-related outcomes of patients with t-APL vs. de novo APL.

From: Comparative analysis of allogeneic hematopoietic cell transplantation in patients with therapy-related and de novo acute promyelocytic leukemia A retrospective study

Characteristics

t-APL

(n = 20)

De novo APL

(n = 124)

P

Engraftment failure, n (%)

1 (5)

1 (0.8)

0.259

Secondary graft failure, n (%)

0

3 (2)

0.999

Neutrophil engraftment, median (range) days

17 (9–29)

17 (9–35)

0.663

Cumulative incidences (95% CI) of

neutrophil engraftment at 35 days, %

95.0

(79.4–99.7)

99.1

(95.9–99.9)

0.835

Cumulative incidences (95% CI) of

grades II-IV acute GVHD at 100 days, %

20.7

(8.2–46.3)

43.3

(35.0–53.5)

0.070

Onset of grades II-IV acute GVHD,

median (range), day

16 (12–41)

21 (6–111)

0.645

Cumulative incidences (95% CI) of

chronic GVHD at 1 year, %

46.1

(26.1–71.7)

34.6

(26.0–45.1)

0.460

Onset of chronic GVHD, median (range), day

124

(84–248)

101

(42–1158)

0.353

Secondary solid malignancies, n (%)

0

4 (3)

0.999

Cumulative incidences (95% CI) of

relapse at 5 years after HCT, n (%)

42.5

(23.7–67.8)

39.0

(30.4–49.1)

0.583

Cumulative incidences (95% CI) of

TRM at 5 years after HCT, %

17.3

(5.9–44.8)

25.0

(17.8–34.6)

0.582

Median (range) follow-up of survivors, mo

114

(16–173)

87

(3–167)

0.512

Cause of death, n (%) APL

5 (25)

30 (24)

0.374

 Infection

2 (10)

14 (11)

 

 Organ failure

1 (5)

7 (6)

 

 GVHD

1 (5)

4 (3)

 

 NRM

2 (10)

13 (10)

 
  1. APL, acute promyelocytic leukemia; t-APL, therapy-related acute promyelocytic leukemia; CI, confidence interval; GVHD, graft-versus-host disease; CyA, cyclosporine A; TAC, tacrolimus; MTX, methotrexate; MMF, mycophenolate mofetil; ATG, antithymocyte globulin; PTCy, post-transplant cyclophosphamide; HCT, hematopoietic cell transplantation; TRM, transplant-related mortality; NRM, non-relapse mortality (excluding infection, organ failure, and GVHD).
  2. Variables were compared between the two groups using Pearson’s chi-squared test, the Mann–Whitney U-test, or Gray’s test.