chr12-57515034-G-A

Variant names:

Variant summary

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

The NM_004990.4(MARS1):c.2180G>A(p.Arg727Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.006 in 1,614,178 control chromosomes in the GnomAD database, including 41 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 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. R727W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0045 ( 3 hom., cov: 32)

Exomes 𝑓: 0.0062 ( 38 hom. )

Consequence

MARS1
NM_004990.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:9

Conservation

PhyloP100: 2.07

Publications

8 publications found

Variant links:

Genes affected

MARS1 (HGNC:6898): (methionyl-tRNA synthetase 1) This gene encodes a member of the class I family of aminoacyl-tRNA synthetases. These enzymes play a critical role in protein biosynthesis by charging tRNAs with their cognate amino acids. The encoded protein is a component of the multi-tRNA synthetase complex and catalyzes the ligation of methionine to tRNA molecules. [provided by RefSeq, Jan 2011]

MARS1 Gene-Disease associations (from GenCC):

Charcot-Marie-Tooth disease axonal type 2U
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
severe early-onset pulmonary alveolar proteinosis due to MARS deficiency
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
autosomal recessive spastic paraplegia type 70
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Charcot-Marie-Tooth disease
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
spastic paraplegia 70, autosomal recessive
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
trichothiodystrophy 9, nonphotosensitive
Inheritance: Unknown, AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Illumina

MARS1 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=0.008411497).

BP6

Variant 12-57515034-G-A is Benign according to our data. Variant chr12-57515034-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 380553.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00454 (692/152290) while in subpopulation NFE AF = 0.00676 (460/68026). AF 95% confidence interval is 0.00625. There are 3 homozygotes in GnomAd4. There are 335 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 3 Unknown,AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MARS1	NM_004990.4 link	c.2180G>A	p.Arg727Gln	missense_variant	Exon 17 of 21	ENST00000262027.10	NP_004981.2	P56192-1
MARS1	XM_047428851.1 link	c.1478G>A	p.Arg493Gln	missense_variant	Exon 13 of 17		XP_047284807.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MARS1	ENST00000262027.10 link	c.2180G>A	p.Arg727Gln	missense_variant	Exon 17 of 21	1	NM_004990.4	ENSP00000262027.5		P56192-1

Frequencies

GnomAD3 genomes

AF:

0.00455

AC:

693

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00113

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00229

Gnomad ASJ

AF:

0.00115

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00103

Gnomad FIN

AF:

0.0126

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00678

Gnomad OTH

AF:

0.00335

GnomAD2 exomes

AF:

0.00483

AC:

1215

AN:

251464

AF XY:

0.00491

show subpopulations

Gnomad AFR exome

AF:

0.000800

Gnomad AMR exome

AF:

0.00156

Gnomad ASJ exome

AF:

0.00218

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0115

Gnomad NFE exome

AF:

0.00705

Gnomad OTH exome

AF:

0.00489

GnomAD4 exome

AF:

0.00616

AC:

8999

AN:

1461888

Hom.:

Cov.:

AF XY:

0.00596

AC XY:

4338

AN XY:

727244

show subpopulations

African (AFR)

AF:

0.000866

AC:

AN:

33480

American (AMR)

AF:

0.00161

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00172

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00175

AC:

151

AN:

86258

European-Finnish (FIN)

AF:

0.0117

AC:

625

AN:

53418

Middle Eastern (MID)

AF:

0.00104

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00699

AC:

7769

AN:

1112008

Other (OTH)

AF:

0.00500

AC:

302

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

513

1025

1538

2050

2563

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

286

572

858

1144

1430

<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:

0.00454

AC:

692

AN:

152290

Hom.:

Cov.:

AF XY:

0.00450

AC XY:

335

AN XY:

74476

show subpopulations

African (AFR)

AF:

0.00113

AC:

AN:

41550

American (AMR)

AF:

0.00229

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00115

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00104

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.0126

AC:

134

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00676

AC:

460

AN:

68026

Other (OTH)

AF:

0.00331

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

121

161

201

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.00524

Hom.:

Bravo

AF:

0.00378

TwinsUK

AF:

0.00566

AC:

ALSPAC

AF:

0.00493

AC:

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00512

AC:

ExAC

AF:

0.00503

AC:

611

Asia WGS

AF:

0.000866

AC:

AN:

3478

EpiCase

AF:

0.00523

EpiControl

AF:

0.00557

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Jun 12, 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. -

Feb 01, 2018

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. -

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

not provided

Benign:3

Apr 23, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

MARS1: BP4, BS2 -

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Charcot-Marie-Tooth disease

Benign:1

Molecular Genetics Laboratory, London Health Sciences Centre

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Charcot-Marie-Tooth disease axonal type 2U;C4225400:Severe early-onset pulmonary alveolar proteinosis due to MARS deficiency

Benign:1

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

MARS1-related disorder

Benign:1

May 16, 2019

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). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.60

CADD

Benign

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.21

Eigen

Benign

-0.89

Eigen_PC

Benign

-0.70

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.87

MetaRNN

Benign

0.0084

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.63

PhyloP100

2.1

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.52

REVEL

Benign

0.027

Sift

Benign

0.33

Sift4G

Benign

0.41

Polyphen

0.0090

Vest4

0.36

MVP

0.35

MPC

0.29

ClinPred

0.0088

GERP RS

-0.072

PromoterAI

-0.016

Neutral

(source)

RBP_binding_hub_radar

0.97

RBP_regulation_power_radar

2.1

Varity_R

0.046

gMVP

0.26

Mutation Taster

=94/6

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.080

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