SLC12A2 and neoplasm: SLC12A2 is a blocker of Na+/K+/2Cl− cotransporter (NKCC), and over‐expression of SLC12A2 promotes cell proliferation and correlates with poor differentiation and metastasis of tumor cells.[42] Higher levels of SLC12A2 were found in poor prognosis compared with well prognosis samples, which displayed relatively reduced expression signals (Figure S6e, Supporting Information).