Abstract
e18134 Background: Chronic Lymphocytic Leukemia (CLL) is the most common leukemia in western world. It is the disease of older adults with a median age at diagnosis of approximately 70 years. However, significant proportion of younger adults are diagnosed with CLL and they usually have an adverse clinical and molecular risk profile necessitating early interventional strategies compared to older patients. Socioeconomic disparities may affect survival for some patient populations. This study examined survival by insurance status for younger patients with CLL. Methods: The Surveillance, Epidemiology, and End Results database was used to identify patients, aged 15 - 64 years, who were diagnosed with CLL between 2007 and 2014 and whose insurance status (no insurance, Medicaid, and other insurance) was documented at diagnosis. Unadjusted associations between insurance status and overall survival (OS) were plotted using Kaplan-Meier curves. The association between insurance status and CLL-specific mortality was assessed using multivariate Cox proportional hazards regression models, adjusting for sociodemographic covariates. Results: A total of 10,913 patients with CLL were included with a median follow up of 44 months. Five-year survival estimates were 87.3%, 87.2%, and 94.0% for patients with no insurance, Medicaid, and other insurance, respectively. In multivariate analysis, compared to patients with other insurance, patients with no insurance (hazard ratio [HR] = 2.33, 95% confidence interval [CI] = 1.73 – 3.140) and Medicaid (HR = 1.95, 95% CI = 1.49 – 2.54) had significantly worse OS survival after adjusting for sociodemographic factors. Conclusions: Younger patients with no insurance or Medicaid have lower survival outcomes after diagnosis with CLL compared to patients with other insurance. Addressing barriers to care, providing resources, and expanding access to care is paramount to reducing the gap in survival for the uninsured patients and those with lower socioeconomic status. Further studies are needed to address poor survival outcomes among Medicaid patients.
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