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Intellectual disability syndromic and non-syndromic v0.6848 LARS2 Zornitza Stark Marked gene: LARS2 as ready
Intellectual disability syndromic and non-syndromic v0.6848 LARS2 Zornitza Stark Gene: lars2 has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.6848 LARS2 Zornitza Stark Phenotypes for gene: LARS2 were changed from to Perrault syndrome 4, MIM# 615300; Hydrops, lactic acidosis, and sideroblastic anemia, MIM# 617021
Intellectual disability syndromic and non-syndromic v0.6847 LARS2 Zornitza Stark Publications for gene: LARS2 were set to
Intellectual disability syndromic and non-syndromic v0.6846 LARS2 Zornitza Stark Mode of inheritance for gene: LARS2 was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Intellectual disability syndromic and non-syndromic v0.6188 LARS2 Chirag Patel reviewed gene: LARS2: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 29205794, 32423379, 30737337, 26537577, 23541342; Phenotypes: Perrault syndrome 4, MIM# 615300, Hydrops, lactic acidosis, and sideroblastic anemia, MIM# 617021; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal; Current diagnostic: yes
Intellectual disability syndromic and non-syndromic v0.2792 LARS Zornitza Stark Tag new gene name tag was added to gene: LARS.
Intellectual disability syndromic and non-syndromic v0.2792 LARS Zornitza Stark Marked gene: LARS as ready
Intellectual disability syndromic and non-syndromic v0.2792 LARS Zornitza Stark Added comment: Comment when marking as ready: HGNC approved name LARS1
Intellectual disability syndromic and non-syndromic v0.2792 LARS Zornitza Stark Gene: lars has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.2792 LARS Zornitza Stark Phenotypes for gene: LARS were changed from Infantile liver failure syndrome 1, MIM# 615438 to Infantile liver failure syndrome 1, MIM# 615438; Seizures; Intellectual disability; Encephalopathy
Intellectual disability syndromic and non-syndromic v0.2791 LARS Zornitza Stark Classified gene: LARS as Green List (high evidence)
Intellectual disability syndromic and non-syndromic v0.2791 LARS Zornitza Stark Gene: lars has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.2790 LARS Konstantinos Varvagiannis gene: LARS was added
gene: LARS was added to Intellectual disability syndromic and non-syndromic. 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
Added comment: 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 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
Intellectual disability syndromic and non-syndromic v0.1821 ALDH3A2 Zornitza Stark Phenotypes for gene: ALDH3A2 were changed from to Sjogren-Larsson syndrome MIM#270200; spasticity; ichthyosis; intellectual disability
Intellectual disability syndromic and non-syndromic v0.1818 ALDH3A2 Zornitza Stark reviewed gene: ALDH3A2: Rating: GREEN; Mode of pathogenicity: None; Publications: 31273323; Phenotypes: Sjogren-Larsson syndrome MIM#270200, spasticity, ichthyosis, intellectual disability; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Intellectual disability syndromic and non-syndromic v0.238 FLNB Zornitza Stark Phenotypes for gene: FLNB were changed from to Larsen syndrome, MIM#150250
Intellectual disability syndromic and non-syndromic v0.235 FLNB Zornitza Stark reviewed gene: FLNB: Rating: RED; Mode of pathogenicity: None; Publications: ; Phenotypes: Larsen syndrome, MIM#150250; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Intellectual disability syndromic and non-syndromic v0.0 LARS2 Zornitza Stark gene: LARS2 was added
gene: LARS2 was added to Intellectual disability, syndromic and non-syndromic_GHQ. Sources: Expert Review Green,Genetic Health Queensland
Mode of inheritance for gene: LARS2 was set to Unknown