rs147319762

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001605.3(AARS1):c.2459A>G(p.Lys820Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00248 in 1,614,152 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K820N) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0018 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0026 ( 9 hom. )

Consequence

AARS1
NM_001605.3 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:13

Conservation

PhyloP100: 2.10

Publications

7 publications found

Variant links:

Genes affected

AARS1 (HGNC:20): (alanyl-tRNA synthetase 1) The human alanyl-tRNA synthetase (AARS) belongs to a family of tRNA synthases, of the class II enzymes. Class II tRNA synthases evolved early in evolution and are highly conserved. This is reflected by the fact that 498 of the 968-residue polypeptide human AARS shares 41% identity witht the E.coli protein. tRNA synthases are the enzymes that interpret the RNA code and attach specific aminoacids to the tRNAs that contain the cognate trinucleotide anticodons. They consist of a catalytic domain which interacts with the amino acid acceptor-T psi C helix of the tRNA, and a second domain which interacts with the rest of the tRNA structure. [provided by RefSeq, Jul 2008]

AARS1 Gene-Disease associations (from GenCC):

Charcot-Marie-Tooth disease axonal type 2N
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Orphanet
undetermined early-onset epileptic encephalopathy
Inheritance: AR, AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Illumina, Orphanet
developmental and epileptic encephalopathy, 29
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
trichothiodystrophy 8, nonphotosensitive
Inheritance: AR, Unknown Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

AARS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.010879695).

BP6

Variant 16-70253980-T-C is Benign according to our data. Variant chr16-70253980-T-C is described in ClinVar as Likely_benign. ClinVar VariationId is 220930.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00179 (272/152262) while in subpopulation AMR AF = 0.00556 (85/15294). AF 95% confidence interval is 0.0046. There are 0 homozygotes in GnomAd4. There are 146 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 9 AD,AR,Unknown gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AARS1	NM_001605.3 link	c.2459A>G	p.Lys820Arg	missense_variant	Exon 18 of 21	ENST00000261772.13	NP_001596.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AARS1	ENST00000261772.13 link	c.2459A>G	p.Lys820Arg	missense_variant	Exon 18 of 21	1	NM_001605.3	ENSP00000261772.8

Frequencies

GnomAD3 genomes

AF:

0.00179

AC:

273

AN:

152144

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000338

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00563

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00122

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00229

Gnomad OTH

AF:

0.00144

GnomAD2 exomes

AF:

0.00169

AC:

424

AN:

251452

AF XY:

0.00163

show subpopulations

Gnomad AFR exome

AF:

0.000369

Gnomad AMR exome

AF:

0.00353

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00102

Gnomad NFE exome

AF:

0.00219

Gnomad OTH exome

AF:

0.00212

GnomAD4 exome

AF:

0.00256

AC:

3736

AN:

1461890

Hom.:

Cov.:

AF XY:

0.00251

AC XY:

1823

AN XY:

727246

show subpopulations

African (AFR)

AF:

0.000418

AC:

AN:

33480

American (AMR)

AF:

0.00378

AC:

169

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000499

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.000936

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00641

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00297

AC:

3306

AN:

1112010

Other (OTH)

AF:

0.00194

AC:

117

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.489

Heterozygous variant carriers

243

486

728

971

1214

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

142

284

426

568

710

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00179

AC:

272

AN:

152262

Hom.:

Cov.:

AF XY:

0.00196

AC XY:

146

AN XY:

74448

show subpopulations

African (AFR)

AF:

0.000337

AC:

AN:

41548

American (AMR)

AF:

0.00556

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.000207

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00122

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00229

AC:

156

AN:

68018

Other (OTH)

AF:

0.00142

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.513

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00203

Hom.:

Bravo

AF:

0.00193

TwinsUK

AF:

0.00458

AC:

ALSPAC

AF:

0.00208

AC:

ESP6500AA

AF:

0.000455

AC:

ESP6500EA

AF:

0.00163

AC:

ExAC

AF:

0.00145

AC:

176

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.00245

EpiControl

AF:

0.00332

ClinVar

Significance: Likely benign

Submissions summary: Benign:13

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:6

Jun 28, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

May 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

AARS1: BP4 -

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Dec 07, 2016

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

not specified

Benign:3

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Jan 15, 2025

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: AARS1 c.2459A>G (p.Lys820Arg) results in a conservative amino acid change located in the DHHA1 domain of the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.0025 in 1614152 control chromosomes in the gnomAD database, including 9 homozygotes. The observed variant frequency exceeds the estimated maximal expected allele frequency for a pathogenic variant in AARS1 causing Developmental and epileptic encephalopathy, 29 phenotype. To our knowledge, no occurrence of c.2459A>G in individuals affected with Developmental and epileptic encephalopathy, 29 and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 220930). Based on the evidence outlined above, the variant was classified as likely benign. -

Oct 13, 2017

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Inborn genetic diseases

Benign:1

Oct 22, 2021

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Charcot-Marie-Tooth disease type 2

Benign:1

Feb 04, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

AARS1-related disorder

Benign:1

Dec 22, 2022

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Charcot-Marie-Tooth disease axonal type 2N

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.088

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.30

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.28

Eigen

Uncertain

0.50

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.87

M_CAP

Benign

0.020

MetaRNN

Benign

0.011

MetaSVM

Benign

-0.29

MutationAssessor

Uncertain

2.2

PhyloP100

2.1

PrimateAI

Benign

0.41

PROVEAN

Benign

-2.2

REVEL

Benign

0.21

Sift

Benign

0.15

Sift4G

Benign

0.22

Polyphen

0.98

Vest4

0.38

MVP

0.80

MPC

0.13

ClinPred

0.044

GERP RS

5.5

Varity_R

0.40

gMVP

0.46

Mutation Taster

=51/49

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over