WNK2 and cancer: Functional annotation of MCT (n = 7) and ECM (n = 254, differentially expressed and correlated with MCTs) transcripts using DAVID revealed the presence of ECM components involved in ECM–receptor interactions, protein digestion and absorption, the phosphoinositide-3-kinase–protein kinase B (PI3K-Akt) signalling pathway, the mitogen-activated protein kinase signalling pathway, and pathways in cancer (Supplementary Table S6).