Table 4.

Multivariable regression models of day +100 study cohort

Risk of relapseRisk of relapse/deathRisk of deathRisk of NRM
HR (95% CI)P valueHR (95% CI)P valueHR (95% CI)P valueHR (95% CI)P value
Pre-HCT/day +70 to +100 MRD dynamics         
MRDneg/MRDneg 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
MRDpos/MRDneg 3.09 (2.19-4.38) <.001 1.99 (1.51-2.62) <.001 1.81 (1.36-2.40) <.001 1.10 (0.68-1.78) .71 
MRDpos/MRDpos 7.66 (3.21-18.30) <.001 5.80 (2.84-11.84) <.001 5.57 (2.63-11.80) <.001 4.70 (1.37-16.18) .0014 
Age at HCT (per 10 y) 0.97 (0.85-1.10) .61 1.07 (0.97-1.18) .18 1.09 (0.98-1.21) .12 1.22 (1.04-1.44) .013 
HCT-CI score         
0-1 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
2-3 0.97 (0.70-1.36) .88 1.17 (0.91-1.50) .22 1.22 (0.94-1.58) .14 1.45 (1.00-2.09) .052 
≥4 0.95 (0.65-1.38) .78 1.21 (0.93-1.58) .16 1.25 (0.95-1.66) .11 1.59 (1.08-2.36) .02 
Disease type         
De novo AML 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
Secondary AML 1.07 (0.74-1.55) .72 1.06 (0.81-1.37) .69 1.06 (0.80-1.40) .68 1.05 (0.72-1.54) .80 
MDS/AML 0.66 (0.38-1.15) .14 1.08 (0.75-1.55) .68 1.21 (0.84-1.75) .31 1.68 (1.03-2.72) .036 
Cytogenetic risk         
Favorable 0.67 (0.30-1.48) .32 0.85 (0.52-1.40) .52 0.83 (0.50-1.40) .49 1.01 (0.53-1.91) .98 
Intermediate 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
Adverse 1.71 (1.15-2.55) .0085 1.22 (0.91-1.64) .18 1.16 (0.86-1.58) .33 0.78 (0.49-1.22) .28 
Second remission (vs first remission) 1.01 (0.69-1.49) .95 1.09 (0.83-1.45) .53 1.19 (0.90-1.59) .23 1.21 (0.81-1.80) .36 
Pre-HCT karyotype         
Normalized 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
Not normalized 1.13 (0.74-1.75) .57 1.04 (0.75-1.43) .58 1.15 (0.83-1.59) .41 0.95 (0.58-1.55) .84 
Non-MAC regimen (vs MAC) 0.77 (0.51-1.18) .24 1.19 (0.88-1.61) .26 1.22 (0.89-1.67) .22 1.94 (1.23-3.05) .0041 
Not recovered pre-HCT blood counts  1.16 (0.85-1.59) .35 1.13 (0.90-1.42) .28 1.11 (0.87-1.40) .41 1.08 (0.77-1.51) .65 
HLA matching         
10/10 HLA-identical related donor 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
10/10 HLA-matched unrelated donor 0.79 (0.55-1.12) .18 0.86 (0.66-1.11) .24 0.85 (0.65-1.11) .22 0.96 (0.66-1.41) .84 
1-2 allele/antigen-mismatched donor 1.10 (0.67-1.81) .70 1.42 (1.01-2.00) .041 1.48 (1.04-2.11) .029 1.72 (1.06-2.77) .027 
HLA-haploidentical donor 1.89 (0.88-4.05) .10 1.82 (0.98-3.38) .058 1.58 (0.82-3.04) .17 1.65 (0.55-4.92) .37 
Umbilical cord blood 0.55 (0.29-1.04) .065 0.77 (0.50-1.21) .26 0.75 (0.47-1.18) .21 1.08 (0.57-2.06) .81 
GVHD prophylaxis         
CNI + MMF w/wo sirolimus 1.34 (0.84-2.14) .22 1.31 (0.93-1.84) 0.13 1.43 (1.01-2.04) .046 1.17 (0.69-1.97) .56 
CNI + MTX w/wo other 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
PTCy 1.22 (0.73-2.04) .45 0.90 (0.59-1.37) .63 0.93 (0.60-1.44) .75 0.57 (0.28-1.18) .13 
CD3 chimerism at day +70 to +100         
Mixed (<95%) 1.08 (0.75-1.54) .69 1.03 (0.80-1.32) .81 1.03 (0.80-1.34) .80 0.94 (0.66-1.35) .75 
Full (≥95%) 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
Decreasing CD3 chimerism         
No (increase or <20% decrease) 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
Yes (≥20% decrease) 0.48 (0.06-3.56) .47 0.84 (0.26-2.71) .77 0.98 (0.30-3.18) .98 1.31 (0.30-5.67) .72 
Risk of relapseRisk of relapse/deathRisk of deathRisk of NRM
HR (95% CI)P valueHR (95% CI)P valueHR (95% CI)P valueHR (95% CI)P value
Pre-HCT/day +70 to +100 MRD dynamics         
MRDneg/MRDneg 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
MRDpos/MRDneg 3.09 (2.19-4.38) <.001 1.99 (1.51-2.62) <.001 1.81 (1.36-2.40) <.001 1.10 (0.68-1.78) .71 
MRDpos/MRDpos 7.66 (3.21-18.30) <.001 5.80 (2.84-11.84) <.001 5.57 (2.63-11.80) <.001 4.70 (1.37-16.18) .0014 
Age at HCT (per 10 y) 0.97 (0.85-1.10) .61 1.07 (0.97-1.18) .18 1.09 (0.98-1.21) .12 1.22 (1.04-1.44) .013 
HCT-CI score         
0-1 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
2-3 0.97 (0.70-1.36) .88 1.17 (0.91-1.50) .22 1.22 (0.94-1.58) .14 1.45 (1.00-2.09) .052 
≥4 0.95 (0.65-1.38) .78 1.21 (0.93-1.58) .16 1.25 (0.95-1.66) .11 1.59 (1.08-2.36) .02 
Disease type         
De novo AML 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
Secondary AML 1.07 (0.74-1.55) .72 1.06 (0.81-1.37) .69 1.06 (0.80-1.40) .68 1.05 (0.72-1.54) .80 
MDS/AML 0.66 (0.38-1.15) .14 1.08 (0.75-1.55) .68 1.21 (0.84-1.75) .31 1.68 (1.03-2.72) .036 
Cytogenetic risk         
Favorable 0.67 (0.30-1.48) .32 0.85 (0.52-1.40) .52 0.83 (0.50-1.40) .49 1.01 (0.53-1.91) .98 
Intermediate 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
Adverse 1.71 (1.15-2.55) .0085 1.22 (0.91-1.64) .18 1.16 (0.86-1.58) .33 0.78 (0.49-1.22) .28 
Second remission (vs first remission) 1.01 (0.69-1.49) .95 1.09 (0.83-1.45) .53 1.19 (0.90-1.59) .23 1.21 (0.81-1.80) .36 
Pre-HCT karyotype         
Normalized 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
Not normalized 1.13 (0.74-1.75) .57 1.04 (0.75-1.43) .58 1.15 (0.83-1.59) .41 0.95 (0.58-1.55) .84 
Non-MAC regimen (vs MAC) 0.77 (0.51-1.18) .24 1.19 (0.88-1.61) .26 1.22 (0.89-1.67) .22 1.94 (1.23-3.05) .0041 
Not recovered pre-HCT blood counts  1.16 (0.85-1.59) .35 1.13 (0.90-1.42) .28 1.11 (0.87-1.40) .41 1.08 (0.77-1.51) .65 
HLA matching         
10/10 HLA-identical related donor 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
10/10 HLA-matched unrelated donor 0.79 (0.55-1.12) .18 0.86 (0.66-1.11) .24 0.85 (0.65-1.11) .22 0.96 (0.66-1.41) .84 
1-2 allele/antigen-mismatched donor 1.10 (0.67-1.81) .70 1.42 (1.01-2.00) .041 1.48 (1.04-2.11) .029 1.72 (1.06-2.77) .027 
HLA-haploidentical donor 1.89 (0.88-4.05) .10 1.82 (0.98-3.38) .058 1.58 (0.82-3.04) .17 1.65 (0.55-4.92) .37 
Umbilical cord blood 0.55 (0.29-1.04) .065 0.77 (0.50-1.21) .26 0.75 (0.47-1.18) .21 1.08 (0.57-2.06) .81 
GVHD prophylaxis         
CNI + MMF w/wo sirolimus 1.34 (0.84-2.14) .22 1.31 (0.93-1.84) 0.13 1.43 (1.01-2.04) .046 1.17 (0.69-1.97) .56 
CNI + MTX w/wo other 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
PTCy 1.22 (0.73-2.04) .45 0.90 (0.59-1.37) .63 0.93 (0.60-1.44) .75 0.57 (0.28-1.18) .13 
CD3 chimerism at day +70 to +100         
Mixed (<95%) 1.08 (0.75-1.54) .69 1.03 (0.80-1.32) .81 1.03 (0.80-1.34) .80 0.94 (0.66-1.35) .75 
Full (≥95%) 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
Decreasing CD3 chimerism         
No (increase or <20% decrease) 1 (Reference)  1 (Reference)  1 (Reference)  1 (Reference)  
Yes (≥20% decrease) 0.48 (0.06-3.56) .47 0.84 (0.26-2.71) .77 0.98 (0.30-3.18) .98 1.31 (0.30-5.67) .72 

Abbreviations are explained in Table 1.

Recovered: ANC ≥ 103/μL and platelets ≥ 105/μL; not recovered: ANC < 103/μL and/or platelets < 105/μL.

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