Table 3.

Univariate and multivariate Cox proportional hazards model for PFS and OS

PFSUnivariateP valueMultivariateP value
HR (95% CI)HR (95% CI)
High-risk aberration status 2.57 (1.63-4.06) 4.6E−5 4.10 (2.24-7.52) 4.9E−6 
Age 1.03 (1.01-1.06) .016 1.03 (0.99-1.07) .15 
KPS 0.99 (0.96-1.02) .48 0.99 (0.95-1.02) .49 
IELSG risk group 1.62 (0.82-3.23) .17 2.37 (0.92-6.14) .07 
MSKCC score 1.71 (1.02-2.86) .041 0.55 (0.23-1.3) .17 
IOL disease 1.61 (0.62-4.19) .33 1.83 (0.63-5.34) .27 
Consolidation 0.11 (0.05-0.25) 1.5E−7 0.03 (0.01-0.10) 2.6E−10 
Maintenance 0.96 (0.34-2.73) .94 0.05 (0.01-0.21) 4.3E−5 
OS Univariate P value Multivariate P value 
HR (95% CI) HR (95% CI) 
High-risk aberration status 2.46 (1.13-5.38) .024 2.03 (0.86-4.79) .10 
Age 1.04 (1-1.09) .049 1.02 (0.95-1.08) .61 
KPS 0.97 (0.94-1.01) .18 0.93 (0.85-1.02) .13 
IELSG risk group 5.01 (1.36-18.42) .015 3.55 (0.77-16.37) .10 
MSKCC score 1.96 (0.9-4.29) .091 0.40 (0.08-2.01) .27 
IOL disease 1.16 (0.31-4.35) .83 0.44 (0.07-2.9) .39 
Consolidation 0.06 (0.01-0.43) .0055 0.04 (0-0.44) .008 
Maintenance 2.45 (0.66-9.08) .18 0.83 (0.19-3.72) .81 
PFSUnivariateP valueMultivariateP value
HR (95% CI)HR (95% CI)
High-risk aberration status 2.57 (1.63-4.06) 4.6E−5 4.10 (2.24-7.52) 4.9E−6 
Age 1.03 (1.01-1.06) .016 1.03 (0.99-1.07) .15 
KPS 0.99 (0.96-1.02) .48 0.99 (0.95-1.02) .49 
IELSG risk group 1.62 (0.82-3.23) .17 2.37 (0.92-6.14) .07 
MSKCC score 1.71 (1.02-2.86) .041 0.55 (0.23-1.3) .17 
IOL disease 1.61 (0.62-4.19) .33 1.83 (0.63-5.34) .27 
Consolidation 0.11 (0.05-0.25) 1.5E−7 0.03 (0.01-0.10) 2.6E−10 
Maintenance 0.96 (0.34-2.73) .94 0.05 (0.01-0.21) 4.3E−5 
OS Univariate P value Multivariate P value 
HR (95% CI) HR (95% CI) 
High-risk aberration status 2.46 (1.13-5.38) .024 2.03 (0.86-4.79) .10 
Age 1.04 (1-1.09) .049 1.02 (0.95-1.08) .61 
KPS 0.97 (0.94-1.01) .18 0.93 (0.85-1.02) .13 
IELSG risk group 5.01 (1.36-18.42) .015 3.55 (0.77-16.37) .10 
MSKCC score 1.96 (0.9-4.29) .091 0.40 (0.08-2.01) .27 
IOL disease 1.16 (0.31-4.35) .83 0.44 (0.07-2.9) .39 
Consolidation 0.06 (0.01-0.43) .0055 0.04 (0-0.44) .008 
Maintenance 2.45 (0.66-9.08) .18 0.83 (0.19-3.72) .81 

Multivariate Cox proportional hazard analysis evaluated the high-risk aberration status, age, KPS, IELSG risk group, MSKCC score, IOL disease, receipt of consolidation and maintenance, and demonstrated a 4.10-fold increased risk of progression (P = 4.9E−6) and a 2.03-fold increased risk of death with the high-risk aberration status at the 4 loci (6p CN-LOH/6p21.3 HD, or mutations in BTG1, ETV6, or TP53). High-risk aberration status, KPS, IELSG risk group, MSKCC score, IOL, consolidation, and maintenance were treated as discrete variables, whereas age was treated as a continuous variable, with values provided in supplemental Table 2 and described in “Statistical analysis” of the supplemental Data. There were also no differences in the incidence or severity of treatment-related toxicities during induction between cohorts of patients that proceeded to consolidation, maintenance, or no additional therapy.

CI, confidence interval; IOL, intraocular lymphoma; MSKCC, Memorial Sloan Kettering Cancer Center.

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