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Table 2 Outcomes

From: Impact of frontline treatment approach on outcomes of myeloid blast phase CML

Characteristic N (%); Median [Range]
IC + TKI
(N = 20)
HMA + TKI (N = 20) TKI
(N = 56)
IC
(N = 8)
Best response     
 CR 9 (45%) 6 (30%) 12 (21.4%) 0
 CRi 3 (15%) 5 (25%) 7 (12.5%) 1 (12.5%)
 MLFS 4 (20%) 3 (15%) 8 (14.3%) 0
 PR 0 0 1 (1.8%) 0
No response 4 (20%) 6 (30%) 28 (50%) 7 (87.5%)
CR/CRi 12 (60%) 11 (55%) 19 (33.9%) 1 (12.5%)
ORR (CR/CRi/MLFS) 16 (80%) 14 (70%) 27 (48.2%) 1 (12.5%)
Complete cytogenetic remission 8 (40%) 10 (50%) 6 (10.7%) 0
Best molecular response^     
 MMR 2/17 (11.7%) 1/16 (6.3%) 1/47 (2.1%) 0
 MR4 2/17 (11.7%) 2/16 (12.5%) 0 0
 MR4.5 1/17 (5.9%) 0 1/47 (2.1%) 0
Time to best response (months) 0.9
[0.7–6.9]
2.2
[0.8–5.5]
2.1
[0.6–16.3]
0.6
[0.6–0.6]
Proceeded to ASCT on this regimen 7 (35%) 6 (30%) 6* (10.7%) 1 (12.5%)
Median time to ASCT (months) 3.4 [1.5–7.9] 5.7 [2.9–8] 3.5 [2.5–5.7] 1.3 [1.3–1.3]
Median EFS (months) 5.2
[0.8–160.7]
5.0
[1.2–96.1]
4.8
[0.5–129.6]
2.2
[0.8–4.1]
Median RFS (months) 5.5
[0.5–159.8]
4.7
[0.6–93.5]
4.6
[0.2–127.7]
3.5
[3.5–3.5]
Median OS (months) 12.9
[0.8–160.7]
10.1
[1.2–96.1]
10.7
[0.5–244.3]
3.4
[0.8–48.9]
Relapse after initial objective response 6/16 6/14 17/27 0/1
EM relapse** 3/6 (50%) 1/6 (16.7%) 3/17 (17.6%) 0/1 (0%)
Early mortality     
 30-day mortality 1 (5%) 0 1 (1.8%) 1 (12.5%)
 60-day mortality 3 (15%) 2 (10%) 1 (1.8%) 3 (37.5%)
5-year rates     
 CIR 51% 54% 80% 100%
 EFS 27% 19% 5% 0%
 OS 30% 28% 13% 0%
  1. CR, complete remission; CRi, complete remission with incomplete count recovery; PR, partial remission; MLFS, morphologic leukemia-free state; ORR, overall response rate; ASCT, allogeneic stem cell transplantation; MMR, major molecular response; CMR, complete molecular response; CIR, cumulative incidence of relapse; EFS, event-free survival; RFS, relapse-free survival; OS, overall survival
  2. ^censored at time of SCT or first event, definitions below:
  3.   MMR (MR3): BCR-ABL1 > 0.01% to ≤ 0.1% on the international scale (IS)
  4.   MR4: BCR-ABL1 > 0.0032% to ≤ 0.01% on the IS
  5.   MR4.5: BCR-ABL1 ≤ 0.0032% on the IS
  6. *2 of the 6 patients in the TKI group went to ASCT with active disease
  7. **Including central nervous system (CNS) relapse; one patient had CNS relapse in IC/TKI cohort, all other EM relapses were outside the CNS