CALCA and cancer: To further identify the molecular mechanisms of CGRP-mediated cancer cell proliferation, we performed the PathScan Intracellular Signaling Array, which tests the phosphorylation status of 16 well-known intracellular signaling molecules (Fig S3B) using LNCaP and MCF-7 cells as non-responders and DU145 and MDA MB-231 cells as responders, based on the results from Fig 8A.