Study to Assess the Use of Lanreotide Autogel® 120 mg in Patients With Locally Advanced or Metastatic Gastroenteropancreatic Neuroendocrine Tumours (GEP-NETs) in Routine Clinical Practice

Inclusion Criteria: * Functioning or non-functioning histopathologically confirmed, locally advanced or metastatic (grade 1 or grade 2 according to the World Health Organisation (WHO) 2017 classification and European Neuroendocrine Tumour Society (ENETS) grading system) GEP-NET G1,G2 (Ki67≤10%, based on recent Ki67). * Measurable disease, as defined by RECIST 1.0, on a CT scan/MRI obtained up to 6 weeks prior to initiation of treatment with Lanreotide Autogel 120 mg. * Subject eligible for treatment with Lanreotide Autogel 120 mg or subject currently being treated with Lanreotide Autogel 120 mg administered every 28 days for a period no longer than 5 months prior to inclusion * Treatment with Lanreotide Autogel 120 mg alone, according to local Summary of Product Characteristics (SmPC). Exclusion Criteria: * Lanreotide Autogel treatment for more than 5 months prior to inclusion into the study * Concomitant anti-proliferative medication/therapies for GEP NET at initiation of Lanreotide Autogel treatment (e.g. Peptide Receptor Radionuclide Therapy (PRRT), cytotoxic chemotherapy, targeted therapy everolimus, sunitinib, interferon, loperamide). * Has been treated with PRRT, chemotherapy, everolimus, sunitinib or interferon within 3 months prior to initiation of Lanreotide Autogel treatment * Parallel participation in an interventional study