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German syndrome is an autosomal recessive arthrogryposis syndrome, described in 5 cases. Three of the four known families with affected children were Ashkenazi Jews. German syndrome is characterized by arthrogryposis, hypotonia-hypokinesia sequence, and lymphedema. Patients present distinct craniofacial appearance (tall forehead and ''carp''-shaped mouth, cleft palate), contractures, severe hypotonia manifesting as motor delay, and swallowing difficulties. The disease has a severe morbidity and mortality rate and survivors present a small stature, hypotonia, frequent upper respiratory infections, and psychomotor delay. There have been no further descriptions in the literature since 1987.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for German syndrome.
3 publications have been identified in PubMed for German syndrome. Research spans Review / Meta-Analysis (67%) and Epidemiology / Natural History (33%).
Härter V (2025). [PMID: 40688042](https://pubmed.ncbi.nlm.nih.gov/40688042/). *Lancet Reg Health Eur*. [Review / Meta-Analysis]
Fay F (2024). [PMID: 39532711](https://pubmed.ncbi.nlm.nih.gov/39532711/). *Der Nervenarzt*. [Epidemiology / Natural History]
Trenkwalder C (2024). [PMID: 39501372](https://pubmed.ncbi.nlm.nih.gov/39501372/). *Neurological research and practice*. [Review / Meta-Analysis]
Data assembled from 4 of 12 sources · Last updated Sep 19, 2026, 1:58 AM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Common questions about German syndrome