Using Propensity Score Matching to Balance the Baseline Characteristics

We read with great interest the article by Arauz et al.1 focusing on mutation status in the African American population with NSCLC. The authors conducted a whole-exome sequencing on a minority population and identified increased mutation frequency of several tumor suppressor genes in NSCLC. Because of the lack of genomic studies on African Americans, their work contributed to a better understanding of the molecular basis of lung cancer and provided clinicians worldwide with potential optimal interventions for patients with NSCLC.