Bi-allelic PRRT2 variants may predispose to Self-limited Familial Infantile Epilepsy.
Eur J Hum Genet
; 2024 Feb 05.
Article
in En
| MEDLINE
| ID: mdl-38316952
ABSTRACT
Heterozygous PRRT2 variants are frequently implicated in Self-limited Infantile Epilepsy, whereas homozygous variants are so far linked to severe presentations including developmental and epileptic encephalopathy, movement disorders, and intellectual disability. In a study aiming to explore the genetics of epilepsy in the Sudanese population, we investigated several families including a consanguineous family with three siblings diagnosed with self-limited infantile epilepsy. We evaluated both dominant and recessive inheritance using whole exome sequencing and genomic arrays. We identified a pathogenic homozygous splice-site variant in the first intron of PRRT2 [NC_000016.10(NM_145239.3)c.-65-1G > A] that segregated with the phenotype in this family. This work taps into the genetics of epilepsy in an underrepresented African population and suggests that the phenotypes of homozygous PRRT2 variants may include milder epilepsy presentations without movement disorders.
Full text:
1
Database:
MEDLINE
Language:
En
Journal:
Eur J Hum Genet
Journal subject:
GENETICA MEDICA
Year:
2024
Type:
Article
Affiliation country:
Germany