Using the Boyden Chamber and Scratch Wound migration assays, Saidak et al. showed that stimulation of the CaSR with extracellular calcium concentrations between 1.8 and 5.0 mM stimulated the migration of MCF7, T47D and MDA-MB-231 breast cancer cells (Saidak et al., 2009). Here, CASR is linked to breast cancer.