We obtained RNA-seq (RNA-sequencing) data and the corresponding clinical information of 375 gastric cancer samples in The Cancer Genome Atlas Stomach Adenocarcinoma (TCGA-STAD) dataset to analyze the relationship between NEK7 expression level and clinical–pathological grading (Fig. 2e) and staging (Fig. 2a–d). This evidence concerns the gene NEK7 and digestive system neoplasm.