Dysregulation of cellular pH is frequent in solid tumours and provides potential opportunities for therapeutic intervention.The acidic microenvironment within a tumour Raquette a neige - Raquettes can promote migration, invasion and metastasis of cancer cells through a variety of mechanisms.Pathways associated with the control of intracellular pH that are under consideration for intervention include carbonic anhydrase IX, the monocarboxylate transporters (MCT, MCT1 and MCT4), the vacuolar-type H+-ATPase proton pump, and the sodium-hydrogen exchanger 1.This review will Imperial Locking Headers describe progress in the development of inhibitors to these targets.