There were 2 studies without multivariate analysis: one which showed no association between MCT4 expression and OS in non-small-cell lung cancer [42] and one that showed that stromal MCT4 expression correlated with decreased OS in triple-negative breast cancer under univariate analysis (p < 0.0001, [41]; Supplementary Table 1). This evidence concerns the gene SLC16A4 and non-small cell lung carcinoma.