rs139661803

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 2P and 16B. PM1BP4_StrongBP6_Very_StrongBS2

The NM_004990.4(MARS1):c.901C>T(p.Arg301Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000421 in 1,613,726 control chromosomes in the GnomAD database, including 6 homozygotes. In-silico tool predicts 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. R301H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00052 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00041 ( 6 hom. )

Consequence

MARS1
NM_004990.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 5.62

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in NM_004990.4

BP4

Computational evidence support a benign effect (MetaRNN=0.05433008).

BP6

Variant 12-57498433-C-T is Benign according to our data. Variant chr12-57498433-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 475433.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High Homozygotes in GnomAdExome at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
MARS1	NM_004990.4 linkuse as main transcript	c.901C>T	p.Arg301Cys	missense_variant	9/21	ENST00000262027.10
MARS1	XM_047428851.1 linkuse as main transcript	c.199C>T	p.Arg67Cys	missense_variant	5/17
MARS1	XM_047428852.1 linkuse as main transcript	c.901C>T	p.Arg301Cys	missense_variant	9/15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MARS1	ENST00000262027.10 linkuse as main transcript	c.901C>T	p.Arg301Cys	missense_variant	9/21	1	NM_004990.4	P1	P56192-1

Frequencies

GnomAD3 genomes

AF:

0.000519

AC:

AN:

152140

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.0190

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000831

AC:

209

AN:

251384

Hom.:

AF XY:

0.000927

AC XY:

126

AN XY:

135860

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.0160

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000359

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000264

Gnomad OTH exome

AF:

0.000815

GnomAD4 exome

AF:

0.000411

AC:

600

AN:

1461586

Hom.:

Cov.:

AF XY:

0.000466

AC XY:

339

AN XY:

727084

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.0146

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000267

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000917

Gnomad4 OTH exome

AF:

0.00137

GnomAD4 genome

AF:

0.000519

AC:

AN:

152140

Hom.:

Cov.:

AF XY:

0.000404

AC XY:

AN XY:

74334

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.0190

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.00138

Hom.:

Bravo

AF:

0.000567

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000502

AC:

Asia WGS

AF:

0.00144

AC:

AN:

3478

EpiCase

AF:

0.000436

EpiControl

AF:

0.000296

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Charcot-Marie-Tooth disease

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Molecular Genetics Laboratory, London Health Sciences Centre

- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 15, 2019

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

Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 22, 2024

- -

MARS1-related disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

May 24, 2019

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

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.023

BayesDel_noAF

Uncertain

0.040

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Pathogenic

0.83

Eigen

Uncertain

0.40

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.96

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.054

MetaSVM

Benign

-0.66

MutationAssessor

Benign

1.8

MutationTaster

Benign

1.0

D;D

PrimateAI

Pathogenic

0.79

PROVEAN

Pathogenic

-4.6

REVEL

Uncertain

0.37

Sift

Benign

0.23

Sift4G

Benign

0.11

Polyphen

0.90

Vest4

0.93

MVP

0.62

MPC

0.86

ClinPred

0.11

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.8

Varity_R

0.51

gMVP

0.92

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over