RCOR2 and metastatic malignant neoplasm in the lymph nodes: Specifically, we compared RCOR2 mRNA expression levels in tumor tissues between patients with clinical stages I-II and III-IV (Figures 2A, D), with and without lymph node metastasis (Figures 2B, E), and histologic grades G1-G2 and G3 (Figures 2C, F).