Survival Disparities in Patients With Metastatic Breast Cancer.

Racial/ethnic and insurance disparities in breast cancer survival persist, even in a dnMBC-only cohort, with notably worse outcomes for NHB and uninsured patients. Given that race and ethnicity are often considered social constructs in the United States specifically, improving health care access has the potential to improve survival in this patient population. Systemic factors other than insurance status leading to disparities must be identified and addressed to provide equitable treatment in this vulnerable patient population.