LGI2 Truncation Causes a Remitting Focal Epilepsy in Dogs
Author Information
Author(s): Seppälä Eija H., Jokinen Tarja S., Fukata Masaki, Fukata Yuko, Webster Matthew T., Karlsson Elinor K., Kilpinen Sami K., Steffen Frank, Dietschi Elisabeth, Leeb Tosso, Eklund Ranja, Zhao Xiaochu, Rilstone Jennifer J., Lindblad-Toh Kerstin, Minassian Berge A., Lohi Hannes
Primary Institution: University of Helsinki
Hypothesis
Does a mutation in the Lgi2 gene cause remitting focal-onset epilepsy in dogs?
Conclusion
The study identifies a truncating mutation in the Lgi2 gene that causes remitting focal-onset epilepsy in dogs.
Supporting Evidence
- The study identified a specific mutation in the Lgi2 gene that was present in all affected dogs.
- Genome-wide association studies showed a strong correlation between the mutation and the epilepsy phenotype.
- Functional studies indicated that the mutation prevents the secretion of the LGI2 protein, which is crucial for neuronal function.
Takeaway
This study found that a specific gene mutation in dogs leads to a type of epilepsy that goes away as they grow up, similar to some childhood epilepsies in humans.
Methodology
The researchers conducted a genome-wide association study using DNA from affected and unaffected dogs to identify the mutation.
Potential Biases
Potential bias in the selection of dogs based on breed and the reliance on retrospective questionnaires for clinical data.
Limitations
The study may not account for all genetic factors influencing epilepsy in dogs, and the sample size is limited to a specific breed.
Participant Demographics
The study focused on Lagotto Romagnolo dogs, with a sample including 28 affected dogs and 112 healthy controls.
Statistical Information
P-Value
1.05×10−23
Confidence Interval
95% CI: 95.0-5747.1
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website