COL4A1 Mutations Cause Ocular Dysgenesis and Myopathy in Mice and Walker-Warburg Syndrome in Humans
Author Information
Author(s): Labelle-Dumais Cassandre, Dilworth David J., Harrington Emily P., de Leau Michelle, Lyons David, Kabaeva Zhyldyz, Manzini M. Chiara, Dobyns William B., Walsh Christopher A., Michele Daniel E., Gould Douglas B.
Primary Institution: University of California San Francisco School of Medicine
Hypothesis
COL4A1 mutations are a novel cause of Muscle-eye-brain disease (MEB) and Walker-Warburg Syndrome (WWS).
Conclusion
COL4A1 mutations lead to ocular dysgenesis, neuronal localization defects, and myopathy in mice, and similar mutations are found in human patients with MEB/WWS.
Supporting Evidence
- Mutations in COL4A1 were identified in two patients with MEB/WWS.
- Col4a1 mutant mice exhibited ocular dysgenesis and myopathy.
- COL4A1 is a major basement membrane protein involved in the pathogenesis of MEB/WWS.
- COL4A1 mutations lead to intracellular accumulation of misfolded proteins.
- COL4A1 mutations represent a distinct pathogenic mechanism underlying MEB/WWS.
Takeaway
This study found that a gene called COL4A1 can cause serious eye and muscle problems in both mice and humans.
Methodology
The study used histological, molecular, and biochemical approaches to analyze the effects of COL4A1 mutations in mice and human patients.
Limitations
The study was limited by the small sample size of human patients and the genetic context dependency of the observed phenotypes.
Participant Demographics
The study included 27 patients with congenital muscular dystrophy, primarily from non-consanguineous families.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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