In their original paper, Ulloa-Montoya et al. (2013) identified 84 gene expression signatures associated with response to MAGE-A3 immunotherapy in metastatic melanoma and non-small-cell lung cancer, whereas 61 of the 84 genes were chosen as biomarker genes by our proposed method (e.g., CD86, CCL5, and IRF1). This evidence concerns the gene IRF1 and non-small cell lung carcinoma.