2-135911162-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PP2PP3BP4BP6BS1

The NM_001349.4(DARS1):c.1391C>T(p.Pro464Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000085 in 1,530,152 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000036 ( 0 hom. )

Consequence

DARS1
NM_001349.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 9.60

Publications

2 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 -4 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.

PP3

Multiple lines of computational evidence support a deleterious effect 10: BayesDel_noAF, Cadd, Eigen, M_CAP, MutationAssessor, phyloP100way_vertebrate, PrimateAI, PROVEAN, REVEL, REVEL [when AlphaMissense, max_spliceai, FATHMM_MKL, MetaRNN, MutationTaster was below the threshold]

BP4

Computational evidence support a benign effect (MetaRNN=0.35130712).

BP6

Variant 2-135911162-G-A is Benign according to our data. Variant chr2-135911162-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1008335.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Likely_benign=1}.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000525 (80/152240) while in subpopulation AFR AF = 0.00188 (78/41538). AF 95% confidence interval is 0.00154. There are 0 homozygotes in GnomAd4. There are 42 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DARS1	NM_001349.4 link	c.1391C>T	p.Pro464Leu	missense_variant	Exon 15 of 16	ENST00000264161.9	NP_001340.2	P14868-1A0A140VJW5
DARS1	NM_001293312.1 link	c.1091C>T	p.Pro364Leu	missense_variant	Exon 14 of 15		NP_001280241.1	P14868-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DARS1	ENST00000264161.9 link	c.1391C>T	p.Pro464Leu	missense_variant	Exon 15 of 16	1	NM_001349.4	ENSP00000264161.4		P14868-1

Frequencies

GnomAD3 genomes

AF:

0.000526

AC:

AN:

152122

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00188

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.00

Gnomad OTH

AF:

0.000480

GnomAD2 exomes

AF:

0.000160

AC:

AN:

250680

AF XY:

0.000155

show subpopulations

Gnomad AFR exome

AF:

0.00216

Gnomad AMR exome

AF:

0.0000871

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000363

AC:

AN:

1377912

Hom.:

Cov.:

AF XY:

0.0000435

AC XY:

AN XY:

690412

show subpopulations

African (AFR)

AF:

0.00126

AC:

AN:

31680

American (AMR)

AF:

0.0000674

AC:

AN:

44526

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25574

East Asian (EAS)

AF:

0.00

AC:

AN:

39228

South Asian (SAS)

AF:

0.00

AC:

AN:

84460

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53372

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5582

European-Non Finnish (NFE)

AF:

0.00000386

AC:

AN:

1035960

Other (OTH)

AF:

0.0000521

AC:

AN:

57530

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.461

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000525

AC:

AN:

152240

Hom.:

Cov.:

AF XY:

0.000564

AC XY:

AN XY:

74442

show subpopulations

African (AFR)

AF:

0.00188

AC:

AN:

41538

American (AMR)

AF:

0.0000654

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68004

Other (OTH)

AF:

0.000475

AC:

AN:

2104

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.516

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000175

Hom.:

Bravo

AF:

0.000688

ESP6500AA

AF:

0.00182

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000189

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Mar 07, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Uncertain

0.11

BayesDel_noAF

Pathogenic

0.38

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.88

D;D

Eigen

Pathogenic

0.90

Eigen_PC

Pathogenic

0.90

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Pathogenic

0.32

MetaRNN

Benign

0.35

T;T

MetaSVM

Uncertain

0.45

MutationAssessor

Pathogenic

2.9

M;.

PhyloP100

9.6

PrimateAI

Pathogenic

0.83

PROVEAN

Pathogenic

-8.0

D;D

REVEL

Pathogenic

0.89

Sift

Benign

0.099

T;T

Sift4G

Benign

0.16

T;T

Polyphen

1.0

D;.

Vest4

0.96

MVP

0.97

MPC

0.71

ClinPred

0.29

GERP RS

5.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.78

gMVP

0.96

Mutation Taster

=2/98

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

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2-135911162-G-A

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