rs368809933

Positions:

• chr3-49104723-A-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The ENST00000306125.12(QARS1):​c.11T>C​(p.Leu4Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,460,412 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L4V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: QARS1 ENST00000306125.12 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.392

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 Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.04110539).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
QARS1	NM_005051.3	c.11T>C	p.Leu4Pro	missense_variant	1/24	ENST00000306125.12	NP_005042.1
QARS1	NM_001272073.2	c.11T>C	p.Leu4Pro	missense_variant	1/24		NP_001259002.1
QARS1	XM_017006965.3	c.11T>C	p.Leu4Pro	missense_variant	1/23		XP_016862454.2
QARS1	NR_073590.2	n.35T>C		non_coding_transcript_exon_variant	1/24

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
QARS1	ENST00000306125.12	c.11T>C	p.Leu4Pro	missense_variant	1/24	1	NM_005051.3	ENSP00000307567	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1460412 Hom.: 0 Cov.: 32 AF XY: 0.00000413 AC XY: 3 AN XY: 726262

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: 9.00e-7

Gnomad4 OTH exome AF: 0.0000497

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

Asia WGS AF: 0.000289 AC: 1 AN: 3478

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 28, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.042
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	8.2
DANN	Benign	0.79
DEOGEN2	Benign	0.074	T;.;T;.;.;.;.
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.029	N
LIST_S2	Benign	0.67	T;T;T;T;T;T;T
M_CAP	Benign	0.0078	T
MetaRNN	Benign	0.041	T;T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-1.5	N;N;.;.;.;.;.
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.35	T
PROVEAN	Benign	1.3	N;N;.;N;.;.;.
REVEL	Benign	0.047
Sift	Benign	0.28	T;T;.;T;.;.;.
Sift4G	Benign	0.27	T;T;T;T;.;.;.
Polyphen		0.0	B;.;.;.;.;.;.
Vest4		0.042
MutPred		0.42		Gain of glycosylation at S6 (P = 0.0155);Gain of glycosylation at S6 (P = 0.0155);Gain of glycosylation at S6 (P = 0.0155);Gain of glycosylation at S6 (P = 0.0155);Gain of glycosylation at S6 (P = 0.0155);Gain of glycosylation at S6 (P = 0.0155);Gain of glycosylation at S6 (P = 0.0155);
MVP		0.15
MPC		0.50
ClinPred		0.23	T
GERP RS		-1.2
Varity_R		0.29
gMVP		0.34

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

Other links and lift over

dbSNP: rs368809933; hg19: chr3-49142156;