A Trial to Assess Efficacy and Safety of Octreotide Subcutaneous Depot in Patients With GEP-NET

Inclusion Criteria: * Male or female patient ≥18 years old * Histologically confirmed, advanced (unresectable and/or metastatic), and well-differentiated NET of GEP or presumed GEP origin * At least 1 measurable, somatostatin receptor-positive lesion according to RECIST 1.1 determined by multiphasic CT or MRI (performed within 28 days before randomization) * ECOG performance status of 0 to 2 Exclusion Criteria: * Documented evidence of disease progression while on treatment (including SSAs) for locally advanced unresectable or metastatic disease * Known central nervous system metastases * Consecutive treatment with long-acting SSAs for more than 6 months before randomization * Carcinoid symptoms that are refractory to treatment (according to the Investigator's judgement) with conventional doses of octreotide LAR or lanreotide ATG and/or to treatment with daily doses of ≤600 µg of octreotide IR * Previous treatment with more than 1 cycle of targeted therapies such as mTOR inhibitors or vascular endothelial growth factor inhibitors, or more than 1 cycle of chemotherapy or interferon for GEP-NET * Treatment of GEP-NET with trans-arterial chemoembolization or trans-arterial embolization within 12 months before screening * Previously received radioligand therapy (PRRT) at any time