NM_020745.4:c.2629C>T

Variant names:

Variant summary

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

The NM_020745.4(AARS2):c.2629C>T(p.Arg877Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00135 in 1,613,660 control chromosomes in the GnomAD database, including 31 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/21 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. R877Q) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0074 ( 17 hom., cov: 32)

Exomes 𝑓: 0.00072 ( 14 hom. )

Consequence

AARS2
NM_020745.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 2.07

Publications

3 publications found

Variant links:

Genes affected

AARS2 (HGNC:21022): (alanyl-tRNA synthetase 2, mitochondrial) The protein encoded by this gene belongs to the class-II aminoacyl-tRNA synthetase family. Aminoacyl-tRNA synthetases play critical roles in mRNA translation by charging tRNAs with their cognate amino acids. The encoded protein is a mitochondrial enzyme that specifically aminoacylates alanyl-tRNA. Mutations in this gene are a cause of combined oxidative phosphorylation deficiency 8. [provided by RefSeq, Dec 2011]

AARS2 links:

ENSG00000272442 (HGNC:):

ENSG00000272442 links:

TMEM151B (HGNC:21315): (transmembrane protein 151B) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

TMEM151B 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=0.005481392).

BP6

Variant 6-44301434-G-A is Benign according to our data. Variant chr6-44301434-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 136220.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00745 (1134/152224) while in subpopulation AFR AF = 0.0253 (1049/41526). AF 95% confidence interval is 0.024. There are 17 homozygotes in GnomAd4. There are 547 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 17 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020745.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AARS2	NM_020745.4	MANE Select	c.2629C>T	p.Arg877Trp	missense	Exon 20 of 22	NP_065796.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
AARS2	ENST00000244571.5	TSL:1 MANE Select	c.2629C>T	p.Arg877Trp	missense	Exon 20 of 22	ENSP00000244571.4
ENSG00000272442	ENST00000505802.1	TSL:2	n.313-5509G>A		intron	N/A	ENSP00000424257.1
AARS2	ENST00000965666.1		c.2617C>T	p.Arg873Trp	missense	Exon 20 of 22	ENSP00000635725.1

Frequencies

GnomAD3 genomes

AF:

0.00742

AC:

1129

AN:

152106

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0252

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00367

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.0105

GnomAD2 exomes

AF:

0.00175

AC:

440

AN:

250970

AF XY:

0.00116

show subpopulations

Gnomad AFR exome

AF:

0.0231

Gnomad AMR exome

AF:

0.00133

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000704

Gnomad OTH exome

AF:

0.000653

GnomAD4 exome

AF:

0.000719

AC:

1051

AN:

1461436

Hom.:

Cov.:

AF XY:

0.000587

AC XY:

427

AN XY:

727014

show subpopulations

African (AFR)

AF:

0.0252

AC:

843

AN:

33464

American (AMR)

AF:

0.00152

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000151

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53008

Middle Eastern (MID)

AF:

0.000520

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000189

AC:

AN:

1111994

Other (OTH)

AF:

0.00171

AC:

103

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.456

Heterozygous variant carriers

133

200

266

333

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

112

140

<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:

0.00745

AC:

1134

AN:

152224

Hom.:

Cov.:

AF XY:

0.00735

AC XY:

547

AN XY:

74434

show subpopulations

African (AFR)

AF:

0.0253

AC:

1049

AN:

41526

American (AMR)

AF:

0.00366

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.000207

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68016

Other (OTH)

AF:

0.0104

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

116

174

232

290

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<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:

0.00240

Hom.:

Bravo

AF:

0.00818

ESP6500AA

AF:

0.0222

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00229

AC:

278

Asia WGS

AF:

0.000866

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

not specified (2)

AARS2-related disorder (1)

Combined oxidative phosphorylation defect type 8 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.096

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.32

CADD

Uncertain

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.090

Eigen

Uncertain

0.21

Eigen_PC

Benign

0.19

FATHMM_MKL

Uncertain

0.84

LIST_S2

Uncertain

0.88

MetaRNN

Benign

0.0055

MetaSVM

Benign

-0.84

MutationAssessor

Benign

1.5

PhyloP100

2.1

PrimateAI

Benign

0.34

PROVEAN

Uncertain

-3.8

REVEL

Benign

0.14

Sift

Uncertain

0.0090

Sift4G

Uncertain

0.0080

Polyphen

0.99

Vest4

0.33

MVP

0.80

MPC

0.72

ClinPred

0.031

GERP RS

3.4

Varity_R

0.27

gMVP

0.39

Mutation Taster

=89/11

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over