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A rare, usually malignant neuroendocrine tumor arizing from delta cells. This neoplasm produces large amounts of somatostatin, which may result in a syndrome characterized by diarrhea, steatorrhea, weight loss, and gastric hyposecretion. Sixty percent are found in the pancreas and 40% in the duodenum or jejunum. The peak incidence occurs between 40 and 60 years of age; women are affected more than men by 2:1.
Features include common findings: Diabetes mellitus, Weight loss, Diarrhea, and Nausea and vomiting and others; and sometimes findings: Intermittent jaundice, Intrahepatic cholestasis, Abnormal abdomen morphology, and Ascites and others. 35 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Digestive system | 13 | Diarrhea, Nausea and vomiting, Constipation |
Biomarker and diagnostic research for somatostatinoma has been reported in the published literature.
Phenotype severity distribution: 15 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
2 clinical trials registered, 1 recruiting. Interventions under study include drug therapy and other interventions. Pipeline includes 1 PHASE2. Research is primarily sponsored by academic and government institutions.
214 publications have been identified in PubMed for somatostatinoma. Kisho has analyzed 93 by research type. Research spans Basic Science / Preclinical (51%), Review / Meta-Analysis (25%), and Gene Therapy / Novel Therapeutics (12%).
Research Type | Count | % of Total |
|---|---|---|
Laboratory research | 47 |
Data assembled from 5 of 12 sources · Last updated Sep 18, 2026, 7:51 AM UTC
European rare disease database
Genetic and Rare Diseases Info Center
Hormones |
6 |
Diabetes mellitus, Abnormality of the thyroid gland, Elevated circulating growth hormone concentration |
Growth and development | 2 | Weight loss, Elevated circulating growth hormone concentration |
Lab test results | 2 | Elevated circulating growth hormone concentration, Increased circulating prolactin concentration |
Blood and immune system | 1 | Hypochromic microcytic anemia |
Brain and nerves | 1 | Chronic fatigue |
Skin | 1 | Subcutaneous lipoma |
51%
Research summaries | 23 | 25% |
New treatment approaches | 11 | 12% |
Testing and diagnosis research | 5 | 5% |
Patient case studies | 3 | 3% |
Clinical study results | 2 | 2% |
Disease patterns and progression | 2 | 2% |
Jin Z (2026). [PMID: 41352505](https://pubmed.ncbi.nlm.nih.gov/41352505/). *Int J Biol Macromol*. [Basic Science / Preclinical]
Xue J (2026). [PMID: 41510971](https://pubmed.ncbi.nlm.nih.gov/41510971/). *Am J Gastroenterol*. [Case Report / Case Series]
Cole Y (2026). [PMID: 41518596](https://pubmed.ncbi.nlm.nih.gov/41518596/). *J Clin Endocrinol Metab*. [Case Report / Case Series]
Keretić D (2025). [PMID: 40941664](https://pubmed.ncbi.nlm.nih.gov/40941664/). *Diagnostics (Basel)*. [Review / Meta-Analysis]
Saad K (2025). [PMID: 40307006](https://pubmed.ncbi.nlm.nih.gov/40307006/). *Keio J Med*. [Review / Meta-Analysis]
Simpson KL (2025). [PMID: 40211072](https://pubmed.ncbi.nlm.nih.gov/40211072/). *Nat Rev Cancer*. [Review / Meta-Analysis]
Thummalapalli R (2025). [PMID: 41264896](https://pubmed.ncbi.nlm.nih.gov/41264896/). *JCO Precis Oncol*. [Diagnostic / Biomarker]
Luo J (2025). [PMID: 39573933](https://pubmed.ncbi.nlm.nih.gov/39573933/). *Adv Sci (Weinh)*. [Basic Science / Preclinical]
Peng J (2025). [PMID: 41110901](https://pubmed.ncbi.nlm.nih.gov/41110901/). *Int Rev Cell Mol Biol*. [Review / Meta-Analysis]
Zhang ML (2025). [PMID: 40665162](https://pubmed.ncbi.nlm.nih.gov/40665162/). *Virchows Arch*. [Basic Science / Preclinical]