AXL expression levels also negatively correlated with RIPK3 expression in stomach adenocarcinoma tumors and acute myeloid leukemia (S4B Fig), based on the analysis of the Cancer Genome Atlas (TCGA) database [56] using cBio Cancer Genomics Portal [51] and according to both Pearson and Spearman correlation analyses. The gene discussed is RIPK3; the disease is acute myeloid leukemia.