Table 2

Cause-specific hazards of relapse

Patients, N/tested (SCT patients)SCT censoringNo SCT censoring
Cause-specific HR (95% CI)P valueCause-specific HR (95% CI)P value
Univariable analysis      
 BCP-ALL      
  WBC ≥30 × 109/L* 67/260 (39/107) 1.85 (1.01-3.38) .046 1.90 (1.19-3.02) .007 
  CNS involvement* 15/257 (9/107) 1.41 (0.44-4.56) .56 0.87 (0.32-2.40) .79 
  CD10-negative immature ALL* 67/250 (38/102) 0.90 (0.45-1.79) .76 0.75 (0.43-1.29) .29 
  MLL gene rearrangement (t[4;11] or other)* 29/253 (18/105) 2.11 (0.94-4.73) .07 1.50 (0.79-2.85) .22 
  t(1;19)* 14/244 (9/103) 1.15 (0.28-4.76) .85 1.04 (0.38-2.84) .95 
  Low hypodiploidy/near triploidy* 11/230 (5/100) 1.43 (0.44-4.60) .55 1.23 (0.45-3.37) .69 
  Complex karyotype* 18/258 (5/107) 1.04 (0.75-1.44) .83 1.01 (0.76-1.36) .92 
  IKZF1 gene deletion 54/216 (20/88) 2.65 (1.48-4.73) .001 2.06 (1.25-3.39) .004 
  MRD1 level ≥10−4 111/260 (59/107) 3.45 (2.00-6.00) <.001 3.07 (1.92-4.90) <.001 
 T-ALL      
  WBC ≥100 × 109/L 37/163 (13/51) 1.65 (0.82-3.33) .16 1.77 (0.98-3.21) .06 
  CNS involvement* 18/162 (14/51) 2.83 (0.82-9.72) .10 1.89 (0.89-4.04) .10 
  Pro-T/mature-T ALL 22/151 (9/47) 1.34 (0.52-3.47) .55 1.93 (0.95-3.90) .07 
  Complex karyotype* 14/161 (8/51) 0.86 (0.54-1.35) .51 0.82 (0.54-1.24) .34 
  TLX1 overexpression 29/127 (5/43) 0.92 (0.41-2.10) .85 0.77 (0.35-1.67) .51 
  High-risk NOTCH1/FBXW7/RAS/PTEN genetics 60/125 (20/39) 5.33 (2.14-13.26) <.001 4.70 (2.14-10.32) <.001 
  MRD1 level ≥10−4 47/163 (25/51) 2.93 (1.50-5.71) .002 2.50 (1.44-4.37) .001 
Multivariable analysis      
 BCP-ALL      
  MRD1 level ≥10−4 — 3.21 (1.67-6.18) <.001 2.49 (1.43-4.32) .001 
  IKZF1 gene deletion — 2.43 (1.29-4.60) .006 1.75 (1.0-3.05) .05 
  MLL gene rearrangement (t[4;11] or other)* — 3.15 (1.13-8.80) .028 1.73 (0.79-3.77) .17 
  WBC ≥30 × 109/L* — 1.01 (0.46-2.24) .98 1.37 (0.76-2.47) .30 
 T-ALL      
  High-risk NOTCH1/FBXW7/RAS/PTEN genetics — 5.59 (1.82-17.19) .003 4.39 (1.75-11.03) .002 
  MRD1 level ≥10−4 — 2.50 (1.06-5.87) .036 3.13 (1.51-6.50) .002 
  WBC ≥100 × 109/L — 1.34 (0.54-3.35) .53 1.51 (0.70-3.26) .29 
  CNS involvement* — 2.49 (0.47-13.3) .29 1.38 (0.51-3.74) .53 
  Pro-T/mature-T ALL — 1.01 (0.33-3.09) .98 1.22 (0.53-2.80) .63 
Patients, N/tested (SCT patients)SCT censoringNo SCT censoring
Cause-specific HR (95% CI)P valueCause-specific HR (95% CI)P value
Univariable analysis      
 BCP-ALL      
  WBC ≥30 × 109/L* 67/260 (39/107) 1.85 (1.01-3.38) .046 1.90 (1.19-3.02) .007 
  CNS involvement* 15/257 (9/107) 1.41 (0.44-4.56) .56 0.87 (0.32-2.40) .79 
  CD10-negative immature ALL* 67/250 (38/102) 0.90 (0.45-1.79) .76 0.75 (0.43-1.29) .29 
  MLL gene rearrangement (t[4;11] or other)* 29/253 (18/105) 2.11 (0.94-4.73) .07 1.50 (0.79-2.85) .22 
  t(1;19)* 14/244 (9/103) 1.15 (0.28-4.76) .85 1.04 (0.38-2.84) .95 
  Low hypodiploidy/near triploidy* 11/230 (5/100) 1.43 (0.44-4.60) .55 1.23 (0.45-3.37) .69 
  Complex karyotype* 18/258 (5/107) 1.04 (0.75-1.44) .83 1.01 (0.76-1.36) .92 
  IKZF1 gene deletion 54/216 (20/88) 2.65 (1.48-4.73) .001 2.06 (1.25-3.39) .004 
  MRD1 level ≥10−4 111/260 (59/107) 3.45 (2.00-6.00) <.001 3.07 (1.92-4.90) <.001 
 T-ALL      
  WBC ≥100 × 109/L 37/163 (13/51) 1.65 (0.82-3.33) .16 1.77 (0.98-3.21) .06 
  CNS involvement* 18/162 (14/51) 2.83 (0.82-9.72) .10 1.89 (0.89-4.04) .10 
  Pro-T/mature-T ALL 22/151 (9/47) 1.34 (0.52-3.47) .55 1.93 (0.95-3.90) .07 
  Complex karyotype* 14/161 (8/51) 0.86 (0.54-1.35) .51 0.82 (0.54-1.24) .34 
  TLX1 overexpression 29/127 (5/43) 0.92 (0.41-2.10) .85 0.77 (0.35-1.67) .51 
  High-risk NOTCH1/FBXW7/RAS/PTEN genetics 60/125 (20/39) 5.33 (2.14-13.26) <.001 4.70 (2.14-10.32) <.001 
  MRD1 level ≥10−4 47/163 (25/51) 2.93 (1.50-5.71) .002 2.50 (1.44-4.37) .001 
Multivariable analysis      
 BCP-ALL      
  MRD1 level ≥10−4 — 3.21 (1.67-6.18) <.001 2.49 (1.43-4.32) .001 
  IKZF1 gene deletion — 2.43 (1.29-4.60) .006 1.75 (1.0-3.05) .05 
  MLL gene rearrangement (t[4;11] or other)* — 3.15 (1.13-8.80) .028 1.73 (0.79-3.77) .17 
  WBC ≥30 × 109/L* — 1.01 (0.46-2.24) .98 1.37 (0.76-2.47) .30 
 T-ALL      
  High-risk NOTCH1/FBXW7/RAS/PTEN genetics — 5.59 (1.82-17.19) .003 4.39 (1.75-11.03) .002 
  MRD1 level ≥10−4 — 2.50 (1.06-5.87) .036 3.13 (1.51-6.50) .002 
  WBC ≥100 × 109/L — 1.34 (0.54-3.35) .53 1.51 (0.70-3.26) .29 
  CNS involvement* — 2.49 (0.47-13.3) .29 1.38 (0.51-3.74) .53 
  Pro-T/mature-T ALL — 1.01 (0.33-3.09) .98 1.22 (0.53-2.80) .63 

The end point was CIR, after censoring patients who received allogeneic SCT in first CR or not, in BCP-ALL and T-ALL subsets separately.

Univariable and multivariable cause-specific HRs and P values are given;

*

Risk factors used in GRAALL trials.

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