In addition, we further found that ATP2C2 levels are associated with poor prognosis of various cancers, including thyroid carcinoma (THCA), head-neck squamous cell carcinoma (HNSC), kidney renal clear cell carcinoma (KIRC), lung squamous cell carcinoma (LUSC), and esophageal squamous cell carcinoma (ESCC) on a web platform Kaplan–Meier Plotter (http://kmplot.com/analysis/) (Figures S2A–E). Here, ATP2C2 is linked to esophageal squamous cell carcinoma.