The rationale for this study is based on both preclinical and clinical considerations. IGF-1 is a known autocrine regulator of CgA secretion and cell growth in human neuroendocrine tumor cells (von Wichert, et al. 2000; Wulbrand, et al. 2000; Van Gompel and Chen 2004). A role for RAD001 as monotherapy in carcinoid and pancreatic NET is suggested by the regulatory role of mTOR in cell growth, metabolism and protein translation (Fingar and Blenis 2004; Vignot, et al. 2005) and the Novartis observation that the PI3K/mTOR pathway is activated by IGF-1 in carcinoid and pancreatic NET cells (von Wichert, et al. 2000; Van Gompel and Chen 2004).