rs768160751
Variant summary
Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate
The NM_003680.4(YARS1):c.1487A>G(p.Lys496Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000991 in 1,613,746 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K496E) has been classified as Likely benign.
Frequency
Consequence
NM_003680.4 missense
Scores
Clinical Significance
Conservation
Publications
- Charcot-Marie-Tooth diseaseInheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
- Charcot-Marie-Tooth disease dominant intermediate CInheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
- neurologic, endocrine, and pancreatic disease, multisystem, infantile-onset 2Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
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ACMG classification
Our verdict: Likely_benign. The variant received -2 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| YARS1 | ENST00000373477.9 | c.1487A>G | p.Lys496Arg | missense_variant | Exon 13 of 13 | 1 | NM_003680.4 | ENSP00000362576.4 |
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152132Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000121 AC: 3AN: 248822 AF XY: 0.00000742 show subpopulations
GnomAD4 exome AF: 0.00000889 AC: 13AN: 1461614Hom.: 0 Cov.: 30 AF XY: 0.0000110 AC XY: 8AN XY: 727100 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152132Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74326 show subpopulations
ClinVar
Submissions by phenotype
Inborn genetic diseases Uncertain:1
The c.1487A>G (p.K496R) alteration is located in exon 13 (coding exon 13) of the YARS gene. This alteration results from a A to G substitution at nucleotide position 1487, causing the lysine (K) at amino acid position 496 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.
Charcot-Marie-Tooth disease dominant intermediate C Uncertain:1
This sequence change replaces lysine, which is basic and polar, with arginine, which is basic and polar, at codon 496 of the YARS protein (p.Lys496Arg). This variant is present in population databases (rs768160751, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with YARS-related conditions. ClinVar contains an entry for this variant (Variation ID: 464874). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt YARS protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at