Through Kaplan-Meier survival analysis on 376 gastric adenocarcinoma samples in the TCGA database, we found that a high expression level of the ATP6V1A gene suggests better prognosis, and the same result was also demonstrated by the Kaplan-Meier plotter (http://kmplot.com/analysis/index.php?p=service&cancer=gastric) (see Fig. 6B). The gene discussed is ATP6V1A; the disease is cancer.