MERTK and neoplasm: Furthermore, analysis of 258 TNBC tumor samples from the cBioPortal (32–37) revealed no correlation (Spearman’s rank correlation coefficient = 0.13, p-value = 0.04; Pearson = 0.09, p-value = 0.17) between CD274 (PD-L1) and MerTK mRNA (Figure 7D).