rs117914586

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.1753+7A>G variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00585 in 1,586,112 control chromosomes in the GnomAD database, including 37 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0042 ( 2 hom., cov: 32)

Exomes 𝑓: 0.0060 ( 35 hom. )

Consequence

MARS1
NM_004990.4 splice_region, intron

Scores

Splicing: ADA: 0.00003349

Clinical Significance

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

Conservation

PhyloP100: -2.28

Publications

1 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 (BayesDel_noAF=-0.85).

BP6

Variant 12-57512360-A-G is Benign according to our data. Variant chr12-57512360-A-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 374666.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 = 0.0042 (639/152260) while in subpopulation NFE AF = 0.00697 (474/68026). AF 95% confidence interval is 0.00645. There are 2 homozygotes in GnomAd4. There are 313 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 Unknown,AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein	UniProt
MARS1	NM_004990.4 link	c.1753+7A>G	splice_region_variant, intron_variant	Intron 14 of 20	ENST00000262027.10	NP_004981.2	P56192-1
MARS1	XM_047428851.1 link	c.1051+7A>G	splice_region_variant, intron_variant	Intron 10 of 16		XP_047284807.1
MARS1	XM_047428852.1 link	c.*45+7A>G	splice_region_variant, intron_variant	Intron 14 of 14		XP_047284808.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MARS1	ENST00000262027.10 link	c.1753+7A>G		splice_region_variant, intron_variant	Intron 14 of 20	1	NM_004990.4	ENSP00000262027.5		P56192-1

Frequencies

GnomAD3 genomes

AF:

0.00419

AC:

638

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000724

Gnomad AMI

AF:

0.0351

Gnomad AMR

AF:

0.00295

Gnomad ASJ

AF:

0.000577

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00386

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.00697

Gnomad OTH

AF:

0.00480

GnomAD2 exomes

AF:

0.00437

AC:

1095

AN:

250744

AF XY:

0.00442

show subpopulations

Gnomad AFR exome

AF:

0.00123

Gnomad AMR exome

AF:

0.00278

Gnomad ASJ exome

AF:

0.000499

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00269

Gnomad NFE exome

AF:

0.00780

Gnomad OTH exome

AF:

0.00359

GnomAD4 exome

AF:

0.00603

AC:

8645

AN:

1433852

Hom.:

Cov.:

AF XY:

0.00588

AC XY:

4201

AN XY:

714884

show subpopulations

African (AFR)

AF:

0.000668

AC:

AN:

32926

American (AMR)

AF:

0.00305

AC:

136

AN:

44652

Ashkenazi Jewish (ASJ)

AF:

0.000347

AC:

AN:

25944

East Asian (EAS)

AF:

0.00

AC:

AN:

39542

South Asian (SAS)

AF:

0.000409

AC:

AN:

85662

European-Finnish (FIN)

AF:

0.00321

AC:

171

AN:

53328

Middle Eastern (MID)

AF:

0.00332

AC:

AN:

5716

European-Non Finnish (NFE)

AF:

0.00732

AC:

7953

AN:

1086622

Other (OTH)

AF:

0.00505

AC:

300

AN:

59460

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

436

871

1307

1742

2178

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

270

540

810

1080

1350

<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:

0.00420

AC:

639

AN:

152260

Hom.:

Cov.:

AF XY:

0.00421

AC XY:

313

AN XY:

74428

show subpopulations

African (AFR)

AF:

0.000722

AC:

AN:

41534

American (AMR)

AF:

0.00294

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.000577

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.000622

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00386

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00697

AC:

474

AN:

68026

Other (OTH)

AF:

0.00475

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

123

154

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:

0.00582

Hom.:

Bravo

AF:

0.00431

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.00796

EpiControl

AF:

0.00729

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Aug 24, 2021

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: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 -

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

not specified

Benign:1

Feb 16, 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. -

Charcot-Marie-Tooth disease

Benign:1

Molecular Genetics Laboratory, London Health Sciences Centre

Significance: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 26, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

MARS1-related disorder

Benign:1

Feb 14, 2023

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as 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

BayesDel_noAF

Benign

-0.85

CADD

Benign

1.8

(source)

DANN

Benign

0.80

PhyloP100

-2.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000033

dbscSNV1_RF

Benign

0.0

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

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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