Racial disparities in the use of palliative radiotherapy for black patients with multiple myeloma in the United States

Multiple myeloma (MM) is characterized by painful lesions that are amenable to palliative radiotherapy (PRT) but racial disparities may exist. In the current study, the National Cancer Database was queried for patients diagnosed with MM from 2004 to 2016 who received PRT. The percentages of patients receiving PRT within 12 months of diagnosis by race/ethnicity were: 15.5% non-Hispanic white (NHW), 14.3% African American (AA), 15.8% Hispanic, and 14.4% other. On multivariable logistic regression, the odds of receiving RT were 13% less for AAs compared to NHWs (OR = 0.87, 95% CI = 0.83-0.90, p < .0001) and the odds of dying within 30 days of PRT were 18% less for AAs compared to NHWs (OR = 0.82, 95% CI = 0.67-1.00, p = .046). This study highlights a health disparity affecting AA patients who despite having a higher incidence and mortality from MM are also less likely to receive PRT within 1 year of diagnosis and near the end of life.