Table 4

Proportional hazards modeling of risk of persistent* CMV-HCA positivity after allogeneic HSCT, stratified by stem cell source (PBSC vs BM)

CharacteristicUnivariate HR (95% CI)PMultivariate HR (95% CI)P
Donor/recipient CMV serostatus  < .001   
    CMV D-/R- — — 
    CMV D+/R- 4.403 (1.101-17.60) — 5.259 (1.308-21.15) .02 
    CMV D+/R+ 24.01 (7.284-79.15) — 37.60 (11.24-125.7) < .001 
    CMV D-/R+ 38.44 (12.00-123.2) — 51.13 (15.70-166.5) < .001 
Recipient race: nonwhite 3.169 (1.842-5.452) < .001 0.867 (0.463-1.625) .66 
Conditioning     
    Reduced-intensity HLA matching 0.488 (0.301-0.792) .004 0.404 (0.173-0.944) .036 
    Mismatched donor 2.147 (1.248-3.693) .006 1.915 (0.993-3.691) .06 
Donor relatedness: unrelated donor 1.504 (0.978-2.314) .06 1.464 (0.863-2.484) .16 
Stem cell source: peripheral blood 0.515 (0.338-0.785) .002  — 
Transplantation period     
    4/2000-6/2001 — — 
    7/2001-6/2002 0.619 (0.361-1.064) .08 1.141 (0.536-2.427) .73 
    7/2002-6/2003 0.378 (0.203-0.703) .002 0.456 (0.180-1.160) .10 
    7/2003-6/2004 0.453 (0.254-0.809) .007 0.867 (0.358-2.099) .75 
Acute GVHD: grades II-IV 2.549 (1.654-3.929) < .001 1.871 (1.123-3.117) .016 
GVHD prophylaxis regimen     
    Cyclosporine 1.553 (0.976-2.471) .06 — 
    Tacrolimus alone 1.443 (0.940-2.215) .09 0.661 (0.277-1.573) .35 
    Sirolimus + tacrolimus 0.613 (0.474-0.795) .001 0.224 (0.091-0.549) .001 
    Prednisone 1.087 (0.640-1.846) .76 1.160 (0.423-3.180) .77 
    Methotrexate 0.899 (0.586-1.380) .63 1.192 (0.531-2.678) .67 
    Mycophenolate mofetil 1.213 (0.586-2.510) .60 0.943 (0.353-2.521) .91 
    T-cell depletion 2.463 (1.507-4.026) .001 1.440 (0.633-3.275) .38 
CharacteristicUnivariate HR (95% CI)PMultivariate HR (95% CI)P
Donor/recipient CMV serostatus  < .001   
    CMV D-/R- — — 
    CMV D+/R- 4.403 (1.101-17.60) — 5.259 (1.308-21.15) .02 
    CMV D+/R+ 24.01 (7.284-79.15) — 37.60 (11.24-125.7) < .001 
    CMV D-/R+ 38.44 (12.00-123.2) — 51.13 (15.70-166.5) < .001 
Recipient race: nonwhite 3.169 (1.842-5.452) < .001 0.867 (0.463-1.625) .66 
Conditioning     
    Reduced-intensity HLA matching 0.488 (0.301-0.792) .004 0.404 (0.173-0.944) .036 
    Mismatched donor 2.147 (1.248-3.693) .006 1.915 (0.993-3.691) .06 
Donor relatedness: unrelated donor 1.504 (0.978-2.314) .06 1.464 (0.863-2.484) .16 
Stem cell source: peripheral blood 0.515 (0.338-0.785) .002  — 
Transplantation period     
    4/2000-6/2001 — — 
    7/2001-6/2002 0.619 (0.361-1.064) .08 1.141 (0.536-2.427) .73 
    7/2002-6/2003 0.378 (0.203-0.703) .002 0.456 (0.180-1.160) .10 
    7/2003-6/2004 0.453 (0.254-0.809) .007 0.867 (0.358-2.099) .75 
Acute GVHD: grades II-IV 2.549 (1.654-3.929) < .001 1.871 (1.123-3.117) .016 
GVHD prophylaxis regimen     
    Cyclosporine 1.553 (0.976-2.471) .06 — 
    Tacrolimus alone 1.443 (0.940-2.215) .09 0.661 (0.277-1.573) .35 
    Sirolimus + tacrolimus 0.613 (0.474-0.795) .001 0.224 (0.091-0.549) .001 
    Prednisone 1.087 (0.640-1.846) .76 1.160 (0.423-3.180) .77 
    Methotrexate 0.899 (0.586-1.380) .63 1.192 (0.531-2.678) .67 
    Mycophenolate mofetil 1.213 (0.586-2.510) .60 0.943 (0.353-2.521) .91 
    T-cell depletion 2.463 (1.507-4.026) .001 1.440 (0.633-3.275) .38 

— indicates not applicable.

*

Persistent is defined as 2 consecutive positive CMV-HCAs.

GVHD was modeled as a time-varying covariate.

Adjusted main effect of PBSC cannot be calculated, as analysis was stratified by PBSC given crossing of hazards.

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