Regarding gastric cancer, it was determined that REV-ERBα expression was decreased in tissues of patients with gastric cancer, which was correlated with poor differentiation (p = 0.009), T stage (p = 0.001), Tumor Node Metastasis (TMN) stage (p = 0.001), and lymph node metastasis (p = 0.007). This evidence concerns the gene NR1D1 and neoplasm.