In Regard to Churilla et al

To the Editor: I read with interest the scientific letter presenting a secondary analysis of North Central Treatment Group N0574 in the December 1, 2017, issue (1, 2). The authors should be commended for this important work on a common clinical problem. In the secondary analysis, they sought to determine whether whole-brain radiation therapy (WBRT) provides a benefit to non-small cell lung cancer patients with 1 to 3 brain metastases and favorable prognoses as defined by the Diagnosis-Specific Graded Prognostic Assessment (GPA) (2).

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