rs754699919

Positions:

• chr3-49101888-C-A
• chr3-49101888-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_005051.3(QARS1):​c.643G>T​(p.Asp215Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,459,192 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: QARS1 NM_005051.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.148

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12444323).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
QARS1	NM_005051.3	c.643G>T	p.Asp215Tyr	missense_variant	8/24	ENST00000306125.12
QARS1	NM_001272073.2	c.610G>T	p.Asp204Tyr	missense_variant	8/24
QARS1	XM_017006965.3	c.643G>T	p.Asp215Tyr	missense_variant	8/23
QARS1	NR_073590.2	n.618G>T		non_coding_transcript_exon_variant	8/24

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
QARS1	ENST00000306125.12	c.643G>T	p.Asp215Tyr	missense_variant	8/24	1	NM_005051.3	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1459192 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 725764

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000332

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000936 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 26, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.44
CADD	Pathogenic	29
DANN	Benign	0.93
DEOGEN2	Benign	0.099	T;.;T;T;T;.;.;.;.
Eigen	Benign	-0.80
Eigen_PC	Benign	-0.80
FATHMM_MKL	Benign	0.23	N
LIST_S2	Benign	0.59	T;T;T;T;T;T;T;T;T
M_CAP	Benign	0.0058	T
MetaRNN	Benign	0.082	T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	0.34	N;.;.;.;.;.;.;.;.
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.28	T
PROVEAN	Benign	-1.2	N;N;.;.;.;N;.;.;.
REVEL	Benign	0.17
Sift	Benign	0.032	D;D;.;.;.;D;.;.;.
Sift4G	Benign	0.062	T;T;T;D;.;D;T;.;.
Polyphen		0.0050	B;.;.;.;.;.;.;.;.
Vest4		0.21
MutPred		0.53		Gain of glycosylation at T213 (P = 0.0138);.;.;Gain of glycosylation at T213 (P = 0.0138);.;.;.;.;.;
MVP		0.30
MPC		0.40
ClinPred		0.092	T
GERP RS		1.6
Varity_R		0.040
gMVP		0.33

Splicing

Name	Calibrated prediction	Score	Prediction
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

LitVar

Other links and lift over

dbSNP: rs754699919; hg19: chr3-49139321;