Table 1.

Baseline characteristics for patients undergoing allo-HCT for MF from 2000 to 2016, who were included in the CIBMTR and EBMT cohorts

VariableCIBMTREBMTP value
No. of patients 623 623  
Median follow-up of survivors (range), mo 42 (3-193) 83 (3-219)  
Patient related    
Age at diagnosis, median (range), y 54 (40-75) 52 (40-74) <.01  
Age at HCT, median (range), y 58 (40-76) 57 (41-74) <.01  
Sex   .12  
Male 395 (63%) 421 (68%)  
Karnofsky performance status score before HCT   <.01  
90-100 373 (60%) 313 (50%)  
HCT-CI   <.01  
113 (18%) 201 (32%)  
62 (10%) 53 (9%)  
67 (11%) 41 (7%)  
3+ 174 (28%) 84 (13%)  
Disease related    
Disease at diagnosis   <.01  
MF 542 (87%) 499 (80%)  
Polycythemia vera 32 (5%) 52 (8%)  
Essential thrombocythemia 49 (8%) 52 (8%)  
Polycythemia vera/essential thrombocythemia  20 (3%)  
Blast in peripheral blood of >1% at diagnosis 89 (14%) 104 (17%) .09  
Hemoglobin level <100 g/L at diagnosis 216 (35%) 214 (34%) <.01  
WBC count >25 × 109/L at diagnosis 59 (9%) 49 (8%) <.01  
Platelet count at diagnosis, 50 × 109/L–100 × 109/L 80 (13%) 87 (14%) <.01  
Constitutional symptoms at diagnosis 183 (29%) 176 (28%) <.01  
Blast in peripheral blood >1% before HCT 188 (30%) 200 (32%) <.01  
Hemoglobin level <100 g/L before HCT 442 (71%) 411 (66%) .06  
WBC count >25 × 109/L before HCT 82 (13%) 95 (15%) <.01  
Platelet count 50 × 109/L–100 × 109/L before HCT 133 (21%) 107 (17%) <.01  
Constitutional symptoms before HCT 104 (17%) 181 (29%) <.01  
DIPSS before HCT    
Low 76 (12%)   
Intermediate-1 283 (45%)   
Intermediate-2 236 (38%)   
High 11 (2%)   
Cytogenetics    
Favorable (normal) 251 (40%)   
Favorable (other) 113 (18%)   
Unfavorable 113 (18%)   
Not tested 34 (5%)   
JAK2 mutation   <.01  
Yes 202 (32%) 213 (34%)  
Spleen status   <.01  
Normal 132 (21%) 81 (13%)  
Splenomegaly 451 (72%) 304 (49%)  
Splenectomy 23 (4%) 90 (14%)  
Treatment-related, nontransplantation    
Prior therapy   <.01  
Yes 468 (75%) 340 (55%)  
Missing 4 (1%) 55 (9%)  
Number of lines of pretreatments   <.01  
151 (24%) 228 (37%)  
255 (41%) 126 (20%)  
108 (17%) 18 (3%)  
≥3 101 (16%) 16 (3%)  
Received Jakafi as prior therapy   <.01  
Yes 175 (28%) 85 (14%)  
Treatment-related, transplantation    
Time from diagnosis to HCT (mo) 18 (2-294) 26 (2-268) <.01  
Donor type   <.01  
HLA-identical sibling 221 (35%) 469 (75%)  
Well-matched unrelated 322 (52%) 107 (17%)  
Partially matched unrelated 80 (13%) 47 (8%)  
Sex match of donor and recipient   .04  
M-M 257 (41%) 253 (41%)  
M-F 134 (22%) 168 (27%)  
F-M 136 (22%) 107 (17%)  
F-F 93 (15%) 95 (15%)  
Graft source   .58  
Peripheral blood 554 (89%) 560 (90%)  
Use of TBI   .59  
No 526 (84%) 530 (85%)  
Conditioning regimen intensity   <.01  
MAC 285 (46%) 181 (29%)  
RIC 292 (47%) 440 (71%)  
NMA 37 (6%)   
GVHD prophylaxis   <.01  
Post-CY + other(s) 9 (1%) 14 (2%)  
TAC + MMF ± other(s) (except post-CY) 88 (14%) 3 (0)  
TAC + MTX ± other(s) (except MMF, post-CY) 281 (45%) 6 (1%)  
TAC + other(s) (except MMF, MTX, post-CY) 32 (5%) 7 (1%)  
TAC alone 11 (2%) 3 (0)  
CSA + MMF ± other(s) (except post-CY) 63 (10%) 193 (31%)  
CSA + MTX ± other(s) (except MMF, post-CY) 111 (18%) 258 (41%)  
CSA + other(s) (except MMF, MTX, post-CY) 6 (1%) 15 (2%)  
CSA alone 12 (2%) 82 (13%)  
Other(s) 8 (1%) 15 (2%)  
Median follow-up of survivors (range), mo 42 (3-193) 83 (3-219)  
VariableCIBMTREBMTP value
No. of patients 623 623  
Median follow-up of survivors (range), mo 42 (3-193) 83 (3-219)  
Patient related    
Age at diagnosis, median (range), y 54 (40-75) 52 (40-74) <.01  
Age at HCT, median (range), y 58 (40-76) 57 (41-74) <.01  
Sex   .12  
Male 395 (63%) 421 (68%)  
Karnofsky performance status score before HCT   <.01  
90-100 373 (60%) 313 (50%)  
HCT-CI   <.01  
113 (18%) 201 (32%)  
62 (10%) 53 (9%)  
67 (11%) 41 (7%)  
3+ 174 (28%) 84 (13%)  
Disease related    
Disease at diagnosis   <.01  
MF 542 (87%) 499 (80%)  
Polycythemia vera 32 (5%) 52 (8%)  
Essential thrombocythemia 49 (8%) 52 (8%)  
Polycythemia vera/essential thrombocythemia  20 (3%)  
Blast in peripheral blood of >1% at diagnosis 89 (14%) 104 (17%) .09  
Hemoglobin level <100 g/L at diagnosis 216 (35%) 214 (34%) <.01  
WBC count >25 × 109/L at diagnosis 59 (9%) 49 (8%) <.01  
Platelet count at diagnosis, 50 × 109/L–100 × 109/L 80 (13%) 87 (14%) <.01  
Constitutional symptoms at diagnosis 183 (29%) 176 (28%) <.01  
Blast in peripheral blood >1% before HCT 188 (30%) 200 (32%) <.01  
Hemoglobin level <100 g/L before HCT 442 (71%) 411 (66%) .06  
WBC count >25 × 109/L before HCT 82 (13%) 95 (15%) <.01  
Platelet count 50 × 109/L–100 × 109/L before HCT 133 (21%) 107 (17%) <.01  
Constitutional symptoms before HCT 104 (17%) 181 (29%) <.01  
DIPSS before HCT    
Low 76 (12%)   
Intermediate-1 283 (45%)   
Intermediate-2 236 (38%)   
High 11 (2%)   
Cytogenetics    
Favorable (normal) 251 (40%)   
Favorable (other) 113 (18%)   
Unfavorable 113 (18%)   
Not tested 34 (5%)   
JAK2 mutation   <.01  
Yes 202 (32%) 213 (34%)  
Spleen status   <.01  
Normal 132 (21%) 81 (13%)  
Splenomegaly 451 (72%) 304 (49%)  
Splenectomy 23 (4%) 90 (14%)  
Treatment-related, nontransplantation    
Prior therapy   <.01  
Yes 468 (75%) 340 (55%)  
Missing 4 (1%) 55 (9%)  
Number of lines of pretreatments   <.01  
151 (24%) 228 (37%)  
255 (41%) 126 (20%)  
108 (17%) 18 (3%)  
≥3 101 (16%) 16 (3%)  
Received Jakafi as prior therapy   <.01  
Yes 175 (28%) 85 (14%)  
Treatment-related, transplantation    
Time from diagnosis to HCT (mo) 18 (2-294) 26 (2-268) <.01  
Donor type   <.01  
HLA-identical sibling 221 (35%) 469 (75%)  
Well-matched unrelated 322 (52%) 107 (17%)  
Partially matched unrelated 80 (13%) 47 (8%)  
Sex match of donor and recipient   .04  
M-M 257 (41%) 253 (41%)  
M-F 134 (22%) 168 (27%)  
F-M 136 (22%) 107 (17%)  
F-F 93 (15%) 95 (15%)  
Graft source   .58  
Peripheral blood 554 (89%) 560 (90%)  
Use of TBI   .59  
No 526 (84%) 530 (85%)  
Conditioning regimen intensity   <.01  
MAC 285 (46%) 181 (29%)  
RIC 292 (47%) 440 (71%)  
NMA 37 (6%)   
GVHD prophylaxis   <.01  
Post-CY + other(s) 9 (1%) 14 (2%)  
TAC + MMF ± other(s) (except post-CY) 88 (14%) 3 (0)  
TAC + MTX ± other(s) (except MMF, post-CY) 281 (45%) 6 (1%)  
TAC + other(s) (except MMF, MTX, post-CY) 32 (5%) 7 (1%)  
TAC alone 11 (2%) 3 (0)  
CSA + MMF ± other(s) (except post-CY) 63 (10%) 193 (31%)  
CSA + MTX ± other(s) (except MMF, post-CY) 111 (18%) 258 (41%)  
CSA + other(s) (except MMF, MTX, post-CY) 6 (1%) 15 (2%)  
CSA alone 12 (2%) 82 (13%)  
Other(s) 8 (1%) 15 (2%)  
Median follow-up of survivors (range), mo 42 (3-193) 83 (3-219)  

Nonmodifiable variables are indicated in italic.

CSA, cyclosporine; Cy, cyclophosphamide; HCT-CI, HCT-specific comorbidity index; MAC, myeloablative conditioning; MMF, mycophenolate mofetil; MTX, methotrexate; NMA, nonmyeloablative; RIC, reduced intensity conditioning; TAC, tacrolimus; TBI, total body irradiation; WBC, white blood cell.

∗Missing data are presented in the supplemental Tables.

Kruskal Wallis test.

Pearson χ2 test.

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