chr2-135961415-T-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 1P and 2B. PP2BP4_Moderate

The NM_001349.4(DARS1):c.301A>T(p.Met101Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000127 in 1,459,744 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

DARS1
NM_001349.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 7.67

Publications

0 publications found

Variant links:

Genes affected

DARS1 (HGNC:2678): (aspartyl-tRNA synthetase 1) This gene encodes a member of a multienzyme complex that functions in mediating the attachment of amino acids to their cognate tRNAs. The encoded protein ligates L-aspartate to tRNA(Asp). Mutations in this gene have been found in patients showing hypomyelination with brainstem and spinal cord involvement and leg spasticity. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2014]

DARS1 Gene-Disease associations (from GenCC):

hypomyelination with brain stem and spinal cord involvement and leg spasticity
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P

DARS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 10 curated pathogenic missense variants (we use a threshold of 10). The gene has 3 curated benign missense variants. Gene score misZ: 0.74697 (below the threshold of 3.09). Trascript score misZ: 0.93713 (below the threshold of 3.09). GenCC associations: The gene is linked to hypomyelination with brain stem and spinal cord involvement and leg spasticity.

BP4

Computational evidence support a benign effect (MetaRNN=0.15896297).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DARS1	NM_001349.4 link	c.301A>T	p.Met101Leu	missense_variant	Exon 4 of 16	ENST00000264161.9	NP_001340.2
DARS1	NM_001293312.1 link	c.1A>T	p.Met1?	initiator_codon_variant	Exon 3 of 15		NP_001280241.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DARS1	ENST00000264161.9 link	c.301A>T	p.Met101Leu	missense_variant	Exon 4 of 16	1	NM_001349.4	ENSP00000264161.4

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000123

AC:

AN:

251268

AF XY:

0.0000957

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000260

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000185

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000132

AC:

173

AN:

1307378

Hom.:

Cov.:

AF XY:

0.000120

AC XY:

AN XY:

658182

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

30572

American (AMR)

AF:

0.000225

AC:

AN:

44506

Ashkenazi Jewish (ASJ)

AF:

0.0000397

AC:

AN:

25194

East Asian (EAS)

AF:

0.00

AC:

AN:

38976

South Asian (SAS)

AF:

0.00

AC:

AN:

83212

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53354

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5516

European-Non Finnish (NFE)

AF:

0.000161

AC:

156

AN:

970860

Other (OTH)

AF:

0.0000906

AC:

AN:

55188

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

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

AF:

0.0000853

AC:

AN:

152366

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74518

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41592

American (AMR)

AF:

0.000196

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000147

AC:

AN:

68040

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

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:

0.000145

Hom.:

Bravo

AF:

0.0000680

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000181

AC:

EpiCase

AF:

0.000273

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

May 19, 2017

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Sep 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

DARS1: PM2, PP3

Inborn genetic diseases

Uncertain:1

Aug 01, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.301A>T (p.M101L) alteration is located in exon 4 (coding exon 4) of the DARS gene. This alteration results from a A to T substitution at nucleotide position 301, causing the methionine (M) at amino acid position 101 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.58

BayesDel_addAF

Benign

-0.0061

BayesDel_noAF

Uncertain

0.050

CADD

Uncertain

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.25

T;T;.;T

Eigen

Uncertain

0.38

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.98

D;D;D;D

M_CAP

Benign

0.043

MetaRNN

Benign

0.16

T;T;T;T

MetaSVM

Uncertain

0.14

MutationAssessor

Pathogenic

3.0

M;.;.;.

PhyloP100

7.7

PrimateAI

Pathogenic

0.85

PROVEAN

Uncertain

-2.7

D;D;D;D

REVEL

Uncertain

0.30

Sift

Uncertain

0.021

D;D;D;D

Sift4G

Uncertain

0.023

D;D;.;.

Vest4

0.66

ClinPred

0.30

GERP RS

5.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.7

Varity_R

0.76

gMVP

0.49

Mutation Taster

=8/192

disease causing

(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

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over