Table 1 Baseline patient-, donor- and transplant-related characteristics at first- and second alloSCT.

From: How risky is a second allogeneic stem cell transplantation?

N = 3356

First alloSCT

Second alloSCT

Age at transplant, yrs

 Median [Q1, Q3]

45.4 (31.9, 55.7)

48.2 (34.7, 58.7)

 [Min, Max]

2.9–77.1

18.1–78.4

Age at diagnosis, yrs

 Median [Q1, Q3]

44.4 (30.9, 54.5)

 

 [Min, Max]

1.8–77.3

 

 Missing count

3

 

Transplant year

 Median [Q1, Q3]

2014 (2011, 2017)

2016 (2014, 2019)

 [Min, Max]

1986–2021

2011–2021

Patient sex at birth

 Male

1933 (57.6%)

 

 Female

1423 (42.4%)

 

Cell source

 Peripheral blood

2778 (82.9%)

3083 (91.9%)

 Bone marrow

507 (15.1%)

271 (8.1%)

 Cord blood

60 (1.8%)

 

 Peripheral blood and cord blood

7 (0.2%)

 

 Bone marrow and cord blood

1 (0.03%)

 

 Missing count

3

2

Type of donor

 Identical sibling

1295 (38.6%)

593 (17.7%)

 Matched unrelated 10/10

1025 (30.6%)

1188 (35.4%)

 Mismatched unrelated 9/10

295 (8.8%)

309 (9.2%)

 Unrelated (missing data on HLA)

701 (20.9%)

470 (14.0%)

 Mismatched unrelated ≤8/10

34 (1.0%)

46 (1.4%)

 Haploidentical HSCT

192 (5.7%)

750 (22.3%)

 Missing count

3

0

Same donor as 1st alloSCT

 No

 

2321 (79.8%)

 Yes

 

588 (20.2%)

 Missing count

 

447

Karnofsky

 <90

624 (20.4%)

1258 (40.4%)

 ≥90

2442 (79.6%)

1854 (59.6%)

 Missing count

290

244

Disease relapse index

 Low

881 (26.3%)

178 (5.3%)

 Int

2096 (62.7%)

1247 (37.2%)

 High

227 (6.8%)

1562 (46.5%)

 Very high

141 (4.2%)

369 (11.0%)

Hematological malignancies

 Acute myeloid leukemia

 

2011 (59.9%)

 Acute lymphoblastic leukemia

 

502 (15.0%)

 Myelodysplastic syndrome (MDS)

 

264 (7.9%)

 Myeloproliferative neoplasm (MPN)

 

179 (5.3%)

 Chronic myeloid leukemia

 

82 (2.4%)

 MDS & MPN

 

81 (2.4%)

 Non-Hodgkins lymphoma

 

66 (2.0%)

 Hodgkins lymphoma

 

59 (1.8%)

 Multiple myeloma

 

57 (1.7%)

 Chronic lymphatic leukemia

 

55 (1.6%)

Myeloablative conditioning

 No

1207 (36.4%)

1828 (56.1%)

 Yes

2110 (63.6%)

1432 (43.9%)

 Missing count

39

96

Total body irradiation

 No

2446 (73.0%)

2543 (76.6%)

 Yes

905 (27.0%)

778 (23.4%)

 Missing count

5

35

GVHD prevention regimen

 Cyclosporine A + MMF based

1457 (45.0%)

1223 (38.7%)

 Cyclosporine A + MTX based

936 (28.9%)

705 (22.3%)

 Cyclosporine A based

393 (12.1%)

383 (12.1%)

 Tacrolimus/Sirolimus + MMF based

242 (7.5%)

538 (17.0%)

 Tacrolimus/Sirolimus + MTX based

48 (1.5%)

44 (1.4%)

 Tacrolimus/Sirolimus based

58 (1.8%)

99 (3.1%)

 Other

103 (3.2%)

168 (5.3%)

 Missing count

119

196

In vivo T cell depletion for second alloSCT

 No

 

1560 (48.6%)

 Campath

 

142 (4.4%)

 ATG

 

1506 (46.9%)

Donor to patient CMV positivity

 Positive to positive

893 (28.1%)

1395 (43.3%)

 Positive to negative

653 (20.5%)

286 (8.9%)

 Negative to positive

332 (10.4%)

766 (23.8%)

 Negative to negative

1304 (41.0%)

772 (24.0%)

 Missing count

174

137

  1. AlloSCT allogeneic stem cell transplantation, ATG anti-T-cell globulin (also termed anti-thymocyte globulin), CMV cytomegaly virus, MMF mycophenolate mofetil, MTX methotrexate.