Regarding the expression of KCC3 in MT, we divided ESCC patients into 2 groups using the median staining score: a low grade KCC3 expression group with staining scores ≤0.725, n = 35, and a high grade KCC3 expression group with staining scores >0.725, n = 35. Here, SLC12A6 is linked to esophageal squamous cell carcinoma.