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Any congenital generalized lipodystrophy in which the cause of the disease is a mutation in the CAVIN1 gene.
Features include always present findings: Elevated creatine kinase (muscle enzyme) (elevated circulating creatine kinase concentration), Lipodystrophy, Centrally nucleated skeletal muscle fibers, and Muscle mounding and others; and common findings: Hepatic steatosis, Muscle stiffness, Flexion contracture, and Enlarged liver (hepatomegaly) and others. 45 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Muscles | 11 | Muscle stiffness, Flexion contracture, Proximal muscle weakness |
Digestive system | 7 | Hepatic steatosis, Enlarged liver (hepatomegaly), Constipation |
Bones and joints | 7 | Weak and brittle bones (osteoporosis), Mild bone density loss (osteopenia), Excessive inward curvature of the lower spine (hyperlordosis) |
Heart and blood vessels | 3 | Atrial fibrillation, Tachycardia, Bradycardia |
Brain and nerves | 3 | Spinal rigidity, Exercise intolerance, Difficulty swallowing (dysphagia) |
Lab test results | 2 | Elevated creatine kinase (muscle enzyme) (elevated circulating creatine kinase concentration), Elevated circulating hepatic transaminase concentration |
Blood and immune system | 2 | Recurrent infections, Enlarged spleen (splenomegaly) |
Growth and development | 1 | Failure to thrive |
Hormones | 1 | Insulin resistance |
Lungs and breathing | 1 | Recurrent pneumonia |
CAVIN1 encodes caveolae associated protein 1 (390 aa). Plays an important role in caveolae formation and organization. Essential for the formation of caveolae in all tissues. Highest expression in Artery Tibial (1,136 TPM) and Artery Aorta (960.9 TPM).
Congenital generalized lipodystrophy type 4 is associated with mutations in the CAVIN1 gene on chromosome 17.
CAVIN1 is classified as a druggable target with score 0.0.
Genetic testing for CAVIN1 is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 5 always present features, 13 common features.
No clinical trials have been registered for congenital generalized lipodystrophy type 4.
7 publications have been identified in PubMed for congenital generalized lipodystrophy type 4. Research spans Case Report / Case Series (57%), Other (14%), and Review / Meta-Analysis (14%).
Chakraborty S (2025). [PMID: 39874659](https://pubmed.ncbi.nlm.nih.gov/39874659/). *Endocrinology, diabetes & metabolism case reports*. [Epidemiology / Natural History]
Rashed HR (2025). [PMID: 39370631](https://pubmed.ncbi.nlm.nih.gov/39370631/). *Muscle & nerve*. [Case Report / Case Series]
Ali S (2025). [PMID: 41066720](https://pubmed.ncbi.nlm.nih.gov/41066720/). *Neurology*. [Case Report / Case Series]
Foss-Freitas M (2025). [PMID: 40835790](https://pubmed.ncbi.nlm.nih.gov/40835790/). *Current diabetes reports*. [Review / Meta-Analysis]
Bilgeç N (2025). [PMID: 41220405](https://pubmed.ncbi.nlm.nih.gov/41220405/). *Molecular syndromology*. [Case Report / Case Series]
Sreekumar S (2025). [PMID: 40718185](https://pubmed.ncbi.nlm.nih.gov/40718185/). *Cureus*. [Other]
Akinci G (2024). [PMID: 38234231](https://pubmed.ncbi.nlm.nih.gov/38234231/). *American journal of medical genetics. Part A*. [Case Report / Case Series]
Data assembled from 6 of 12 sources · Last updated Sep 19, 2026, 1:54 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center