chr5-140674308-G-C

Position:

• chr5-140674308-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002109.6(HARS1):​c.1479C>G​(p.Asp493Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,458 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. D493D) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: HARS1 NM_002109.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.118

Genes affected

HARS1 (HGNC:4816): (histidyl-tRNA synthetase 1) Aminoacyl-tRNA synthetases are a class of enzymes that charge tRNAs with their cognate amino acids. The protein encoded by this gene is a cytoplasmic enzyme which belongs to the class II family of aminoacyl-tRNA synthetases. The enzyme is responsible for the synthesis of histidyl-transfer RNA, which is essential for the incorporation of histidine into proteins. The gene is located in a head-to-head orientation with HARSL on chromosome five, where the homologous genes share a bidirectional promoter. The gene product is a frequent target of autoantibodies in the human autoimmune disease polymyositis/dermatomyositis. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.13666174).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HARS1	NM_002109.6	c.1479C>G	p.Asp493Glu	missense_variant	13/13	ENST00000504156.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HARS1	ENST00000504156.7	c.1479C>G	p.Asp493Glu	missense_variant	13/13	1	NM_002109.6	P3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1459458 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 726206

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Usher syndrome type 3B Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 14, 2023

This sequence change replaces aspartic acid, which is acidic and polar, with glutamic acid, which is acidic and polar, at codon 493 of the HARS protein (p.Asp493Glu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with HARS-related conditions. 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 HARS protein function. 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: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.098
BayesDel_addAF	Benign	-0.098	T
BayesDel_noAF	Benign	-0.38
CADD	Benign	16
DANN	Benign	0.95
DEOGEN2	Benign	0.0023	.;T;T;T;T;.;.;T
Eigen	Benign	-0.52
Eigen_PC	Benign	-0.32
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Benign	0.75	T;T;.;T;T;T;T;T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.14	T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	-0.090	.;.;N;N;.;.;.;.
MutationTaster	Benign	0.98	D;D;D;D;D;D;D;D
PrimateAI	Benign	0.30	T
PROVEAN	Benign	0.12	N;N;.;N;N;N;N;N
REVEL	Benign	0.13
Sift	Benign	0.42	T;T;.;T;T;T;T;T
Sift4G	Benign	0.71	T;T;.;T;T;T;T;T
Polyphen		0.013, 0.0	.;B;B;B;.;.;.;B
Vest4		0.075
MutPred		0.42		.;.;Loss of stability (P = 0.2891);Loss of stability (P = 0.2891);.;.;.;.;
MVP		0.63
MPC		0.39
ClinPred		0.34	T
GERP RS		3.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.054
gMVP		0.44

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr5-140053893;