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Genetic epilepsy syndromes

Gene: LARS

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LARS (leucyl-tRNA synthetase)
EnsemblGeneIds (GRCh38): ENSG00000133706
EnsemblGeneIds (GRCh37): ENSG00000133706
OMIM: 151350, Gene2Phenotype
LARS is in 5 panels

1 review

Konstantinos Varvagiannis (Other)

Green List (high evidence)

Please consider inclusion with amber/green rating in the current panel.

Biallelic pathogenic LARS1 variants cause Infantile liver failure syndrome 1, MIM# 615438.

Lenz et al (2020 - PMID: 32699352) review the phenotype of 25 affected individuals from 15 families.

Seizures occurred in 19/24 and were commonly associated with infections. Encephalopathic episodes (in 13 patients) accompanied by seizures up to status epilepticus occurred independently of hepatic decompensation.

In addition 22/24 presented with neurodevelopmental delay. The authors comment that cognitive impairment was present in 13/17 individuals (mild-severe) whereas most presented with learning disabilities.

These patients will be most likely investigated for their liver disease (although presentation was highly variable and/or very mild in few).

The gene encodes a cytoplasmic amino-acyl tRNA synthetase (ARS) with neurologic manifestations observed in almost all patients (and seizures / DD and ID common to other disorders due to mutations in other genes encoding for ARSs).

Please note that the HGNC approved symbol for this gene is LARS1.
Sources: Literature
Created: 27 Jul 2020, 9:57 a.m.

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Infantile liver failure syndrome 1, MIM# 615438

Publications

Details

Mode of Inheritance
BIALLELIC, autosomal or pseudoautosomal
Sources
Phenotypes
  • Infantile liver failure syndrome 1, MIM# 615438
OMIM
151350
Clinvar variants
Variants in LARS
Penetrance
Complete
Publications
Panels with this gene

History Filter Activity

27 Jul 2020, Gel status: 0

Created, Added New Source, Set mode of inheritance, Set publications, Set Phenotypes, Set penetrance

Konstantinos Varvagiannis (Other)

gene: LARS was added gene: LARS was added to Genetic epilepsy syndromes. Sources: Literature Mode of inheritance for gene: LARS was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: LARS were set to 32699352 Phenotypes for gene: LARS were set to Infantile liver failure syndrome 1, MIM# 615438 Penetrance for gene: LARS were set to Complete Review for gene: LARS was set to GREEN