ANO1 and neoplasm: Chloride channels including calcium-activated chloride channels (CaCCs), voltage-gated chloride channels (ClCs), acid-sensitive chloride channels, and intracellular chloride channels (CLICs) are deeply involved in tumorigenesis, particularly through their support of CSC proliferation, survival, invasion, and adaptation to the tumour microenvironment [44,45,46,47,48,49,50].