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An insulin-producing neuroendocrine tumor arising from the beta cells of the pancreas. It may or may not be associated with inappropriate secretion of insulin and an associated clinical syndrome.
Features include very common findings: Hyperinsulinemic hypoglycemia, Hyperinsulinemia, Excessive sweating (hyperhidrosis), and Seizure and others; and common findings: Atypical behavior, Zollinger-Ellison syndrome, Excessive hunger (polyphagia), and Generalized muscle weakness and others. 34 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 7 | Atypical behavior, Anxiety, Seizure |
Eyes | 2 | Abnormality of vision, Abnormal rapid eye movement sleep |
Digestive system | 2 | Excessive hunger (polyphagia), Abnormality of the pancreatic islet cells |
Hormones | 2 | Pituitary prolactin cell adenoma, Neoplasm of the adrenal gland |
Ears | 1 | Hearing abnormality |
Skin | 1 | Excessive sweating (hyperhidrosis) |
Muscles | 1 | Generalized muscle weakness |
Cognition | 1 | Abnormality of mental function |
Biomarker and diagnostic research for pancreatic insulin-producing neuroendocrine tumor has been reported in the published literature.
Phenotype severity distribution: 11 very common features, 10 common features.
Estimated prevalence: Unknown (Unknown prevalence).
1 clinical trial registered, 1 recruiting. Interventions under study include other interventions. Research is primarily sponsored by academic and government institutions.
140 publications have been identified in PubMed for pancreatic insulin-producing neuroendocrine tumor. Research spans Basic Science / Preclinical (41%), Case Report / Case Series (15%), and Review / Meta-Analysis (13%).
Research Type | Count | % of Total |
|---|---|---|
Laboratory research | 58 | 41% |
Patient case studies | 21 | 15% |
Research summaries | 18 | 13% |
Testing and diagnosis research | 16 | 11% |
Clinical study results | 13 | 9% |
New treatment approaches | 10 | 7% |
Disease patterns and progression | 3 | 2% |
Other research | 1 | 1% |
Vujasinovic M (2026). [PMID: 41689768](https://pubmed.ncbi.nlm.nih.gov/41689768/). *United European Gastroenterol J*. [Review / Meta-Analysis]
Helbing A (2026). [PMID: 28846270](https://pubmed.ncbi.nlm.nih.gov/28846270/). *Unknown Journal*. [Diagnostic / Biomarker]
Kobayashi H (2026). [PMID: 41474982](https://pubmed.ncbi.nlm.nih.gov/41474982/). *Cancer Res*. [Basic Science / Preclinical]
Zhuo F (2026). [PMID: 31335019](https://pubmed.ncbi.nlm.nih.gov/31335019/). *Unknown Journal*. [Case Report / Case Series]
van Baal L (2026). [PMID: 41448958](https://pubmed.ncbi.nlm.nih.gov/41448958/). *Diabetes Obes Metab*. [Diagnostic / Biomarker]
Jacobsen LM (2026). [PMID: 41697686](https://pubmed.ncbi.nlm.nih.gov/41697686/). *JAMA*. [Clinical Trial Publication]
Wei F (2026). [PMID: 41850539](https://pubmed.ncbi.nlm.nih.gov/41850539/). *Gastroenterology*. [Basic Science / Preclinical]
Awad DH (2026). [PMID: 31194450](https://pubmed.ncbi.nlm.nih.gov/31194450/). *Unknown Journal*. [Other]
Li H (2026). [PMID: 41235536](https://pubmed.ncbi.nlm.nih.gov/41235536/). *Advanced science (Weinheim, Baden-Wurttemberg, Germany)*. [Basic Science / Preclinical]
Li Z (2026). [PMID: 41519441](https://pubmed.ncbi.nlm.nih.gov/41519441/). *J Nutr Biochem*. [Basic Science / Preclinical]
Data assembled from 5 of 12 sources · Last updated Sep 20, 2026, 5:39 PM UTC
European rare disease database
Genetic and Rare Diseases Info Center
AI-curated news mentioning pancreatic insulin-producing neuroendocrine tumor
Updated May 13, 2026
A recent study published in PubMed highlights the clinicopathological features and outcomes of immature PIT-1 lineage tumors, identified as a high-risk subtype of pituitary neuroendocrine tumors according to WHO 2022. This research provides valuable insights into the characteristics and prognosis of this rare tumor type.
A case study highlights life-threatening radiation necrosis following a complete response to pembrolizumab in a patient with a metastatic silent PIT1 pituitary neuroendocrine tumor. This finding underscores potential complications in immunotherapy for rare tumors.