Genetic Variant AARS2:p.Asn399Thr (chr6-44306384-T-G) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_020745.4(AARS2):c.1196A>C(p.Asn399Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,870 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N399H) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

AARS2
NM_020745.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -2.00

Publications

0 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: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.28743052).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AARS2	NM_020745.4 link	c.1196A>C	p.Asn399Thr	missense_variant	Exon 9 of 22	ENST00000244571.5	NP_065796.2	Q5JTZ9
AARS2	XM_005249245.4 link	c.905A>C	p.Asn302Thr	missense_variant	Exon 7 of 20		XP_005249302.1
AARS2	XR_007059282.1 link	n.1220A>C		non_coding_transcript_exon_variant	Exon 9 of 14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
AARS2	ENST00000244571.5 link	c.1196A>C	p.Asn399Thr	missense_variant	Exon 9 of 22	1	NM_020745.4	ENSP00000244571.4	Q5JTZ9
ENSG00000272442	ENST00000505802.1 link	n.313-559T>G		intron_variant	Intron 1 of 9	2		ENSP00000424257.1	H0Y9J4
TMEM151B	ENST00000438774.2 link	c.577-559T>G		intron_variant	Intron 2 of 2	3		ENSP00000409337.2	Q8IW70-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461870

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727236

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111994

Other (OTH)

AF:

0.0000166

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.49

CADD

Benign

1.7

(source)

DANN

Benign

0.92

DEOGEN2

Benign

0.32

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.60

LIST_S2

Benign

0.30

M_CAP

Benign

0.014

MetaRNN

Benign

0.29

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.1

PhyloP100

-2.0

PrimateAI

Benign

0.25

PROVEAN

Uncertain

-2.4

REVEL

Benign

0.12

Sift

Uncertain

0.0040

Sift4G

Uncertain

0.016

Polyphen

0.10

Vest4

0.30

MutPred

0.48

Loss of catalytic residue at N399 (P = 0.0683);

MVP

0.26

MPC

0.27

ClinPred

0.15

GERP RS

-7.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.4

Varity_R

0.13

gMVP

0.26

Mutation Taster

=87/13

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over