Clinical features, ASCT-relevant variables, and post-ASCT events according to JAK2V617F allele burden
Variable/category . | JAK2V617F allele burden . | P . | |||
---|---|---|---|---|---|
0.1%-25% . | 26%-50% . | 51%-75% . | 76%-100% . | ||
No. (%) of patients (n = 78)* | 27 (35) | 26 (33) | 11 (14) | 14 (18) | |
Median age (range), y (n = 78)* | 54 (33-72) | 56 (32-65) | 58 (48-76) | 57 (49-70) | .4 |
Males, no. (%) (n = 78)* | 15 (56) | 18 (69) | 7 (64) | 8 (57) | .8 |
Diagnosis (n = 74)* | .03† | ||||
PMF | 21 (81) | 16 (67) | 5 (46) | 5 (39) | |
Post-PV MF | 1 (4) | 5 (20) | 4 (36) | 7 (54) | |
Post-ET MF | 4 (15) | 3 (13) | 2 (18) | 1 (7) | |
Median time, mo (range), from diagnosis to SCT (n = 75)* | 18 (3-231) | 51 (4-272) | 81 (13-181) | 112 (15-185) | .03† |
Cytogenetics (n = 47)* | .8 | ||||
Favorable | 0 (0) | 1 (6) | 0 (0) | 1 (10) | |
Normal | 8 (62) | 7 (44) | 6 (75) | 6 (60) | |
Others | 3 (23) | 5 (31) | 2 (25) | 2 (20) | |
Unfavorable | 2 (15) | 3 (19) | 0 (0) | 1 (10) | |
Lille score (n = 74)* | .7 | ||||
Low | 7 (26) | 5 (20) | 3 (30) | 6 (50) | |
Intermediate | 14 (52) | 14 (56) | 4 (40) | 4 (33) | |
High | 6 (22) | 6 (24) | 3 (30) | 2 (17) | |
IPSS score (n = 72) | .6 | ||||
Low | 0 (0) | 2 (9) | 0 (0) | 0 (0) | |
Intermediate-1 | 3 (13) | 3 (13) | 3 (28) | 2 (14) | |
Intermediate-2 | 9 (37) | 10 (43) | 4 (36) | 7 (50) | |
High | 12 (50) | 8 (35) | 4 (36) | 5 (36) | |
Transfusion dependency, no. (%) (n = 74)* | .3 | ||||
No transfusions | 10 (40) | 13 (54) | 6 (54) | 10 (71) | |
Transfusion-dependent | 15 (60) | 11 (46) | 5 (46) | 4 (29) | |
CMV status (n = 78)* | .2 | ||||
CMV+ recipients, no. (%) | 13 (48) | 18 (69) | 6 (54) | 11 (79) | |
Donors, no. (%) (n = 78)* | .7 | ||||
MRD | 6 (22) | 7 (27) | 3 (27) | 2 (14) | |
MUD | 16 (59) | 11 (42) | 5 (46) | 10 (72) | |
MMUD | 5 (19) | 8 (31) | 3 (27) | 2 (14) | |
Days to engraftment, median (range) (n = 70)* | 15 (10-27) | 16 (10-46) | 15 (9-26) | 16 (11-45) | .5 |
Median time, d (range), to JAK2 clearance (n = 45)* | 117 (20-214) | 72 (27-216) | 75 (33-194) | 96 (38-312) | .4 |
Grade II-IV acute GVHD, no. (%) (n = 74)* | 7 (27) | 8 (33) | 3 (27) | 5 (39) | .9 |
Extensive chronic GVHD, no. (%) (n = 72)* | 8 (31) | 4 (17) | 2 (20) | 4 (31) | .7 |
Primary graft failure, no. (%) (n = 78)* | 1 (4) | 3 (12) | 1 (9) | 0 | .3 |
Secondary graft dysfunction, no. (%) (n = 78)* | 2 (7) | 1 (4) | 0 | 0 | .4 |
Deaths, no. (%) (n = 20)* | 10 (37) | 3 (12) | 3 (27) | 4 (29) | .2 |
Cause of death | .1 | ||||
Relapse | 1 (10) | 2 (67) | 1 (33) | 0 | |
Transplantation-related | 9 (90) | 1 (33) | 2 (67) | 3 (100) | |
Probability of overall survival at 5 y, % (95% CI) | 62 (46-80) | 78 (57-99) | 66 (38-93) | 69 (48-90) | .3 |
Probability of disease-free survival at 5 y, % (95% CI) | 41 (23-59) | 57 (34-81) | 53 (28-78) | 60 (38-82) | .6 |
Cumulative incidence of relapse (%) at 3 y (95% CI) | 19 (3-35) | 26 (11-41) | 35 (9-61) | 11 (6-28) | .4 |
Cumulative incidence of TRM (%) at 1 y (95% CI) | 30 (16-44) | 4 (0-11) | 16 (0-37) | 32 (10-54) | .2 |
Variable/category . | JAK2V617F allele burden . | P . | |||
---|---|---|---|---|---|
0.1%-25% . | 26%-50% . | 51%-75% . | 76%-100% . | ||
No. (%) of patients (n = 78)* | 27 (35) | 26 (33) | 11 (14) | 14 (18) | |
Median age (range), y (n = 78)* | 54 (33-72) | 56 (32-65) | 58 (48-76) | 57 (49-70) | .4 |
Males, no. (%) (n = 78)* | 15 (56) | 18 (69) | 7 (64) | 8 (57) | .8 |
Diagnosis (n = 74)* | .03† | ||||
PMF | 21 (81) | 16 (67) | 5 (46) | 5 (39) | |
Post-PV MF | 1 (4) | 5 (20) | 4 (36) | 7 (54) | |
Post-ET MF | 4 (15) | 3 (13) | 2 (18) | 1 (7) | |
Median time, mo (range), from diagnosis to SCT (n = 75)* | 18 (3-231) | 51 (4-272) | 81 (13-181) | 112 (15-185) | .03† |
Cytogenetics (n = 47)* | .8 | ||||
Favorable | 0 (0) | 1 (6) | 0 (0) | 1 (10) | |
Normal | 8 (62) | 7 (44) | 6 (75) | 6 (60) | |
Others | 3 (23) | 5 (31) | 2 (25) | 2 (20) | |
Unfavorable | 2 (15) | 3 (19) | 0 (0) | 1 (10) | |
Lille score (n = 74)* | .7 | ||||
Low | 7 (26) | 5 (20) | 3 (30) | 6 (50) | |
Intermediate | 14 (52) | 14 (56) | 4 (40) | 4 (33) | |
High | 6 (22) | 6 (24) | 3 (30) | 2 (17) | |
IPSS score (n = 72) | .6 | ||||
Low | 0 (0) | 2 (9) | 0 (0) | 0 (0) | |
Intermediate-1 | 3 (13) | 3 (13) | 3 (28) | 2 (14) | |
Intermediate-2 | 9 (37) | 10 (43) | 4 (36) | 7 (50) | |
High | 12 (50) | 8 (35) | 4 (36) | 5 (36) | |
Transfusion dependency, no. (%) (n = 74)* | .3 | ||||
No transfusions | 10 (40) | 13 (54) | 6 (54) | 10 (71) | |
Transfusion-dependent | 15 (60) | 11 (46) | 5 (46) | 4 (29) | |
CMV status (n = 78)* | .2 | ||||
CMV+ recipients, no. (%) | 13 (48) | 18 (69) | 6 (54) | 11 (79) | |
Donors, no. (%) (n = 78)* | .7 | ||||
MRD | 6 (22) | 7 (27) | 3 (27) | 2 (14) | |
MUD | 16 (59) | 11 (42) | 5 (46) | 10 (72) | |
MMUD | 5 (19) | 8 (31) | 3 (27) | 2 (14) | |
Days to engraftment, median (range) (n = 70)* | 15 (10-27) | 16 (10-46) | 15 (9-26) | 16 (11-45) | .5 |
Median time, d (range), to JAK2 clearance (n = 45)* | 117 (20-214) | 72 (27-216) | 75 (33-194) | 96 (38-312) | .4 |
Grade II-IV acute GVHD, no. (%) (n = 74)* | 7 (27) | 8 (33) | 3 (27) | 5 (39) | .9 |
Extensive chronic GVHD, no. (%) (n = 72)* | 8 (31) | 4 (17) | 2 (20) | 4 (31) | .7 |
Primary graft failure, no. (%) (n = 78)* | 1 (4) | 3 (12) | 1 (9) | 0 | .3 |
Secondary graft dysfunction, no. (%) (n = 78)* | 2 (7) | 1 (4) | 0 | 0 | .4 |
Deaths, no. (%) (n = 20)* | 10 (37) | 3 (12) | 3 (27) | 4 (29) | .2 |
Cause of death | .1 | ||||
Relapse | 1 (10) | 2 (67) | 1 (33) | 0 | |
Transplantation-related | 9 (90) | 1 (33) | 2 (67) | 3 (100) | |
Probability of overall survival at 5 y, % (95% CI) | 62 (46-80) | 78 (57-99) | 66 (38-93) | 69 (48-90) | .3 |
Probability of disease-free survival at 5 y, % (95% CI) | 41 (23-59) | 57 (34-81) | 53 (28-78) | 60 (38-82) | .6 |
Cumulative incidence of relapse (%) at 3 y (95% CI) | 19 (3-35) | 26 (11-41) | 35 (9-61) | 11 (6-28) | .4 |
Cumulative incidence of TRM (%) at 1 y (95% CI) | 30 (16-44) | 4 (0-11) | 16 (0-37) | 32 (10-54) | .2 |