rs142327602

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_005051.3(QARS1):c.2123C>T(p.Pro708Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000153 in 1,614,152 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). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P708A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00099 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000066 ( 0 hom. )

Consequence

QARS1
NM_005051.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:3

Conservation

PhyloP100: 9.37

Variant links:

Genes affected

QARS1 (HGNC:9751): (glutaminyl-tRNA synthetase 1) Aminoacyl-tRNA synthetases catalyze the aminoacylation of tRNA by their cognate amino acid. Because of their central role in linking amino acids with nucleotide triplets contained in tRNAs, aminoacyl-tRNA synthetases are thought to be among the first proteins that appeared in evolution. In metazoans, 9 aminoacyl-tRNA synthetases specific for glutamine (gln), glutamic acid (glu), and 7 other amino acids are associated within a multienzyme complex. Although present in eukaryotes, glutaminyl-tRNA synthetase (QARS) is absent from many prokaryotes, mitochondria, and chloroplasts, in which Gln-tRNA(Gln) is formed by transamidation of the misacylated Glu-tRNA(Gln). Glutaminyl-tRNA synthetase belongs to the class-I aminoacyl-tRNA synthetase family. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2013]

QARS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.05667585).

BP6

Variant 3-49098220-G-A is Benign according to our data. Variant chr3-49098220-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 477838.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=4, Likely_benign=2}.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000985 (150/152264) while in subpopulation AFR AF = 0.00347 (144/41536). AF 95% confidence interval is 0.00301. There are 0 homozygotes in GnomAd4. There are 72 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position FAILED quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
QARS1	NM_005051.3 link	c.2123C>T	p.Pro708Leu	missense_variant	Exon 22 of 24	ENST00000306125.12	NP_005042.1	P47897-1B7Z840
QARS1	NM_001272073.2 link	c.2090C>T	p.Pro697Leu	missense_variant	Exon 22 of 24		NP_001259002.1	P47897-2B7Z840
QARS1	XM_017006965.3 link	c.2123C>T	p.Pro708Leu	missense_variant	Exon 22 of 23		XP_016862454.2
QARS1	NR_073590.2 link	n.2098C>T		non_coding_transcript_exon_variant	Exon 22 of 24

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
QARS1	ENST00000306125.12 link	c.2123C>T	p.Pro708Leu	missense_variant	Exon 22 of 24	1	NM_005051.3	ENSP00000307567.6		P47897-1

Frequencies

GnomAD3 genomes

AF:

0.000973

AC:

148

AN:

152146

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00343

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:

0.00

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.000255

AC:

AN:

251458

AF XY:

0.000177

show subpopulations

Gnomad AFR exome

AF:

0.00314

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000272

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.0000664

AC:

AN:

1461888

Hom.:

Cov.:

AF XY:

0.0000633

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.00233

AC:

AN:

33480

Gnomad4 AMR exome

AF:

0.000134

AC:

AN:

44724

Gnomad4 ASJ exome

AF:

0.00

AC:

AN:

26136

Gnomad4 EAS exome

AF:

0.0000756

AC:

AN:

39700

Gnomad4 SAS exome

AF:

0.0000116

AC:

AN:

86252

Gnomad4 FIN exome

AF:

0.00

AC:

AN:

53420

Gnomad4 NFE exome

AF:

0.00000180

AC:

AN:

1112012

Gnomad4 Remaining exome

AF:

0.0000993

AC:

AN:

60396

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

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:

0.000985

AC:

150

AN:

152264

Hom.:

Cov.:

AF XY:

0.000967

AC XY:

AN XY:

74462

show subpopulations

Gnomad4 AFR

AF:

0.00347

AC:

0.00346687

AN:

0.00346687

Gnomad4 AMR

AF:

0.000196

AC:

0.00019613

AN:

0.00019613

Gnomad4 ASJ

AF:

0.00

AC:

AN:

Gnomad4 EAS

AF:

0.00

AC:

AN:

Gnomad4 SAS

AF:

0.00

AC:

AN:

Gnomad4 FIN

AF:

0.00

AC:

AN:

Gnomad4 NFE

AF:

0.00

AC:

AN:

Gnomad4 OTH

AF:

0.00142

AC:

0.00141911

AN:

0.00141911

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

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:

0.000229

Hom.:

Bravo

AF:

0.00102

ESP6500AA

AF:

0.00363

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000313

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Jun 10, 2025

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 25471517) -

May 10, 2023

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

BS1 -

Oct 28, 2022

Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant has not been reported in the literature but is present in the Genome Aggregation Database (Highest reported MAF 0.3% (142/41414) (https://gnomad.broadinstitute.org/variant/3-49098220-G-A?dataset=gnomad_r3). This variant is present in ClinVar, with multiple labs classifying this variant as Likely Benign (Variation ID:477838). Evolutionary conservation and computational predictive tools suggest that this variant may impact the protein. In summary, data on this variant is insufficient for disease classification. Therefore, the clinical significance of this variant is uncertain. -

Diffuse cerebral and cerebellar atrophy - intractable seizures - progressive microcephaly syndrome

Uncertain:1Benign:1

Jan 06, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Oct 23, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The QARS1 c.2123C>T;p.Pro708Leu variant (rs142327602), to our knowledge, is not reported in the medical literature but is reported in ClinVar (Variation ID: 477838). This variant is found predominantly in the African/African-American population with an allele frequency of 0.33% (84/24958 alleles) in the Genome Aggregation Database (v2.1.1). Computational analyses are uncertain whether this variant is neutral or deleterious (REVEL: 0537). Due to limited information, the clinical significance of this variant is uncertain at this time. -

Inborn genetic diseases

Benign:1

Aug 30, 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. -

QARS1-related disorder

Benign:1

Apr 16, 2024

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

0.17

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Uncertain

-0.010

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.40

.;T;.;T

Eigen

Pathogenic

1.0

Eigen_PC

Pathogenic

0.95

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.96

D;D;D;D

M_CAP

Benign

0.082

MetaRNN

Benign

0.057

T;T;T;T

MetaSVM

Benign

-0.42

MutationAssessor

Uncertain

2.5

.;M;.;.

PrimateAI

Uncertain

0.65

PROVEAN

Pathogenic

-8.8

D;D;D;.

REVEL

Uncertain

0.54

Sift

Uncertain

0.010

D;T;T;.

Sift4G

Uncertain

0.038

D;D;D;D

Polyphen

1.0

.;D;.;.

Vest4

0.89, 0.86, 0.83

MVP

0.66

MPC

1.0

ClinPred

0.13

GERP RS

5.5

Varity_R

0.59

gMVP

0.52

Mutation Taster

=12/88

disease causing

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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