RecruitingPhase 2Drug trialTrial of Nab-sirolimus in Patients With Well-differentiated Neuroendocrine Tumors (NETs) of the Gastrointestinal Tract, Lung, or Pancreas Who Have Not Received Prior Treatment With mTOR InhibitorsA Phase 2 multi-center, open-label, single arm study of nab-sirolimus in patients with well-differentiated neuroendocrine tumors (NETs) of the gastrointestinal tract, lung, or pancreas who have not received prior treatment with mTOR inhibitors