CXCR2 and Miyoshi myopathy: Taken together, numerous chemokines are expressed in both MM and OC and, while some tumors express an extended repertoire of chemokines [11], common are the substantial secretion of CXCR2 ligands CXCL1/Gro-α and CXCL8/IL-8 and to some extent CXCL12/SDF1 and CCL2/MCP1.