SDC1 and plasma cell myeloma: A pre-assembled complex consisting of Sdc1, inactive αvβ3 or αvβ5 integrin and inactive IGF-1R is found in fibroblasts, breast cancer and other carcinomas, multiple myeloma and activated vascular endothelial cells undergoing pathological angiogenesis (39–42) (Figure 1) and is likely found in many cancers.