Cancer medicine · 2021
Associations between race and survival in pediatric patients with diffuse large B-cell lymphoma.
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Khullar Karishma, Plascak Jesse J, Drachtman Richard, Cole Peter D, Parikh Rahul R
Аннотация
BACKGROUND: The purpose of this study was to examine the factors associated with disparities in overall survival (OS) by race in pediatric diffuse large B-cell lymphoma (DLBCL) patients.
METHODS: We evaluated clinical features and survival among patients ≤21 years of age diagnosed with stage I-IV DLBCL from 2004 to 2014 from the National Cancer Database (NCDB) using a multivariable Cox proportional hazards model.
RESULTS: Among 1386 pediatric patients with DLBCL, 1023 patients met eligibility criteria. In unadjusted analysis, Black patients had a significantly higher overall death rate than White patients (HRBlack vs. White 1.51; 95% CI: 1.02-2.23, p = 0.041). The survival disparity did not remain significant in adjusted analysis, though controlling for covariates had little effect on the magnitude of the disparity (HR 1.46; 95% CI 0.93-2.31, p = 0.103). In adjusted models, presence of B symptoms, receipt of chemotherapy, stage of disease, and Other insurance were significantly associated with OS. Specifically, patients with B symptoms and those with Other insurance were more likely to die than those without B symptoms or private insurance, respectively (HR 1.75; 95% CI 1.22-2.50, p = 0.002) and (HR 2.56; 95% CI, 1.39-4.73, p = 0.0027), patients who did not receive chemotherapy were three times more likely to die than those who received chemotherapy (HR 3.10; CI 1.80-5.35, p < 0.001), and patients who presented with earlier stage disease were less likely to die from their disease than those with stage IV disease (stages I-III HR 0.34, CI 0.18-0.64, p < 0.001; HR 0.50, CI 0.30-0.82, p = 0.006, HR 0.72, CI 0.43-1.13, p = 0.152, respectively).
CONCLUSIONS: Our results suggest that racial disparities in survival may be mediated by clinical and treatment parameters.
METHODS: We evaluated clinical features and survival among patients ≤21 years of age diagnosed with stage I-IV DLBCL from 2004 to 2014 from the National Cancer Database (NCDB) using a multivariable Cox proportional hazards model.
RESULTS: Among 1386 pediatric patients with DLBCL, 1023 patients met eligibility criteria. In unadjusted analysis, Black patients had a significantly higher overall death rate than White patients (HRBlack vs. White 1.51; 95% CI: 1.02-2.23, p = 0.041). The survival disparity did not remain significant in adjusted analysis, though controlling for covariates had little effect on the magnitude of the disparity (HR 1.46; 95% CI 0.93-2.31, p = 0.103). In adjusted models, presence of B symptoms, receipt of chemotherapy, stage of disease, and Other insurance were significantly associated with OS. Specifically, patients with B symptoms and those with Other insurance were more likely to die than those without B symptoms or private insurance, respectively (HR 1.75; 95% CI 1.22-2.50, p = 0.002) and (HR 2.56; 95% CI, 1.39-4.73, p = 0.0027), patients who did not receive chemotherapy were three times more likely to die than those who received chemotherapy (HR 3.10; CI 1.80-5.35, p < 0.001), and patients who presented with earlier stage disease were less likely to die from their disease than those with stage IV disease (stages I-III HR 0.34, CI 0.18-0.64, p < 0.001; HR 0.50, CI 0.30-0.82, p = 0.006, HR 0.72, CI 0.43-1.13, p = 0.152, respectively).
CONCLUSIONS: Our results suggest that racial disparities in survival may be mediated by clinical and treatment parameters.