The landscape of epilepsy-related GATOR1 variants
Research output: Contribution to journal › Journal article › Research › peer-review
Documents
- The landscape of epilepsy-related GATOR1 variants
Final published version, 1.44 MB, PDF document
PURPOSE: To define the phenotypic and mutational spectrum of epilepsies related to DEPDC5, NPRL2 and NPRL3 genes encoding the GATOR1 complex, a negative regulator of the mTORC1 pathway METHODS: We analyzed clinical and genetic data of 73 novel probands (familial and sporadic) with epilepsy-related variants in GATOR1-encoding genes and proposed new guidelines for clinical interpretation of GATOR1 variants.
RESULTS: The GATOR1 seizure phenotype consisted mostly in focal seizures (e.g., hypermotor or frontal lobe seizures in 50%), with a mean age at onset of 4.4 years, often sleep-related and drug-resistant (54%), and associated with focal cortical dysplasia (20%). Infantile spasms were reported in 10% of the probands. Sudden unexpected death in epilepsy (SUDEP) occurred in 10% of the families. Novel classification framework of all 140 epilepsy-related GATOR1 variants (including the variants of this study) revealed that 68% are loss-of-function pathogenic, 14% are likely pathogenic, 15% are variants of uncertain significance and 3% are likely benign.
CONCLUSION: Our data emphasize the increasingly important role of GATOR1 genes in the pathogenesis of focal epilepsies (>180 probands to date). The GATOR1 phenotypic spectrum ranges from sporadic early-onset epilepsies with cognitive impairment comorbidities to familial focal epilepsies, and SUDEP.
Original language | English |
---|---|
Journal | Genetics In Medicine |
Volume | 21 |
Issue number | 2 |
Pages (from-to) | 398-408 |
Number of pages | 11 |
ISSN | 1098-3600 |
DOIs | |
Publication status | Published - Feb 2019 |
- Adolescent, Brugada Syndrome/genetics, Child, Child, Preschool, DNA Copy Number Variations/genetics, Epilepsy/complications, Female, GTPase-Activating Proteins/genetics, Genetic Predisposition to Disease, Humans, INDEL Mutation/genetics, Infant, Infant, Newborn, Loss of Function Mutation/genetics, Male, Mechanistic Target of Rapamycin Complex 1/genetics, Multiprotein Complexes/genetics, Pedigree, Repressor Proteins/genetics, Seizures/complications, Signal Transduction/genetics, Tumor Suppressor Proteins/genetics
Research areas
Number of downloads are based on statistics from Google Scholar and www.ku.dk
ID: 234700907