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Mendeliome v0.9661 B3GAT3 Zornitza Stark changed review comment from: More than 5 unrelated families reported.; to: 26 patients from 13 families with variable phenotypes resembling Larsen, Antley-Bixler, Shprintzen-Goldberg, and Geroderma osteodysplastica syndromes. Multiple skeletal and cardiac abnormalities reported.
Mendeliome v0.8792 RELT Zornitza Stark gene: RELT was added
gene: RELT was added to Mendeliome. Sources: Expert Review
Mode of inheritance for gene: RELT was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: RELT were set to 30506946
Phenotypes for gene: RELT were set to Amelogenesis imperfecta, type IIIC, MIM# 618386
Review for gene: RELT was set to GREEN
Added comment: Amelogenesis imperfecta type IIIC is characterized by hypocalcified enamel in both the primary and secondary dentition. The enamel is rough and yellow-brown; under normal use, the enamel disintegrates from occlusal surfaces of the molars, leaving a ring of intact enamel remaining on the sides. At least 3 families and a mouse model.
Sources: Expert Review
Mendeliome v0.6769 ALDH1L2 Naomi Baker gene: ALDH1L2 was added
gene: ALDH1L2 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: ALDH1L2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: ALDH1L2 were set to PMID: 31341639; 33168096
Phenotypes for gene: ALDH1L2 were set to pruritic ichthyosis, severe diffuse hypomyelination seen on MRI, and abnormal lipid peaks
Review for gene: ALDH1L2 was set to RED
Added comment: Individual reported with bialleleic ALDH1L2 variants (non-canonical splice and a frameshift mutation), who also has a de novo hemizygous RPS6KA3 frameshift mutation. Authors state that not all features of the individual could be explained by the RPS6KA3 variant, and that consideration of Coffin-Lowry sysndrome was only made after identification of the RPS6KA3 variant. Therefore individual has there is a blended phenotype of Coffin–Lowry syndrome and Sjögren–Larsson syndrome. From functional studies authors propose that the ALDH1L2 loss induces mitochondrial dysfunction due to reduced NADPH and increased oxidative stress (PMID: 31341639). Knockout mouse model was viable and did not show an apparent phenotype, however metabolomic analysis showed vastly changed metabotypes in the liver and plasma in these mice suggesting channeling of fatty acids away from β-oxidation. Authors therefore postulate that the role of ALDH1L2 in the lipid metabolism explains why the loss of this enzyme is associated with neuro-cutaneous disease.
Sources: Literature
Mendeliome v0.4878 GZF1 Zornitza Stark Phenotypes for gene: GZF1 were changed from to Joint laxity, short stature, and myopia, MIM# 617662; Larsen-like syndrome
Mendeliome v0.4875 GZF1 Zornitza Stark reviewed gene: GZF1: Rating: GREEN; Mode of pathogenicity: None; Publications: 33009817, 28475863; Phenotypes: Joint laxity, short stature, and myopia, MIM# 617662, Larsen-like syndrome; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.4389 LARS2 Zornitza Stark Marked gene: LARS2 as ready
Mendeliome v0.4389 LARS2 Zornitza Stark Gene: lars2 has been classified as Green List (High Evidence).
Mendeliome v0.4389 LARS2 Zornitza Stark Phenotypes for gene: LARS2 were changed from to Perrault syndrome 4; Hydrops, lactic acidosis, and sideroblastic anemia, MIM# 617021; Leukodystrophy
Mendeliome v0.4388 LARS2 Zornitza Stark Publications for gene: LARS2 were set to
Mendeliome v0.4387 LARS2 Zornitza Stark Mode of inheritance for gene: LARS2 was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.4386 LARS2 Zornitza Stark reviewed gene: LARS2: Rating: GREEN; Mode of pathogenicity: None; Publications: 29205794, 32423379, 30737337, 26537577, 23541342; Phenotypes: Perrault syndrome 4, Hydrops, lactic acidosis, and sideroblastic anemia, MIM# 617021, Leukodystrophy; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.3541 LARS Zornitza Stark Publications for gene: LARS were set to 28774368; 30349989; 22607940
Mendeliome v0.3540 LARS Zornitza Stark edited their review of gene: LARS: Changed publications: 28774368, 30349989, 22607940, 32699352
Mendeliome v0.3540 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
Mendeliome v0.3539 LARS Zornitza Stark Marked gene: LARS as ready
Mendeliome v0.3539 LARS Zornitza Stark Added comment: Comment when marking as ready: 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.
Mendeliome v0.3539 LARS Zornitza Stark Gene: lars has been classified as Green List (High Evidence).
Mendeliome v0.3539 LARS Zornitza Stark Tag new gene name tag was added to gene: LARS.
Mendeliome v0.2288 LARS Zornitza Stark Marked gene: LARS as ready
Mendeliome v0.2288 LARS Zornitza Stark Gene: lars has been classified as Green List (High Evidence).
Mendeliome v0.2288 LARS Zornitza Stark Classified gene: LARS as Green List (high evidence)
Mendeliome v0.2288 LARS Zornitza Stark Gene: lars has been classified as Green List (High Evidence).
Mendeliome v0.2287 LARS Zornitza Stark gene: LARS was added
gene: LARS was added to Mendeliome. Sources: NHS GMS
Mode of inheritance for gene: LARS was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: LARS were set to 28774368; 30349989; 22607940
Phenotypes for gene: LARS were set to Infantile liver failure syndrome 1, MIM# 615438
Review for gene: LARS was set to GREEN
gene: LARS was marked as current diagnostic
Added comment: Six unrelated families reported in the literature, reviewed in PMID: 30349989.
Sources: NHS GMS
Mendeliome v0.1089 ALDH3A2 Zornitza Stark Phenotypes for gene: ALDH3A2 were changed from to Sjogren-Larsson syndrome MIM#270200; spasticity; ichthyosis; intellectual disability
Mendeliome v0.1086 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
Mendeliome v0.0 LARS2 Zornitza Stark gene: LARS2 was added
gene: LARS2 was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: LARS2 was set to Unknown