rs2230310

Positions:

• chr7-30609652-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_002047.4(GARS1):​c.803C>T​(p.Thr268Ile) variant causes a missense change. The variant allele was found at a frequency of 0.00393 in 1,613,140 control chromosomes in the GnomAD database, including 21 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0035 (2 hom., cov: 33)
  • Exomes 𝑓: 0.0040 (19 hom.)
• Consequence: GARS1 NM_002047.4 missense
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:18
• Conservation: PhyloP100: 6.04

Genes affected

GARS1 (HGNC:4162): (glycyl-tRNA synthetase 1) This gene encodes glycyl-tRNA synthetase, one of the aminoacyl-tRNA synthetases that charge tRNAs with their cognate amino acids. The encoded enzyme is an (alpha)2 dimer which belongs to the class II family of tRNA synthetases. It has been shown to be a target of autoantibodies in the human autoimmune diseases, polymyositis or dermatomyositis. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.011372536).
• BP6: Variant 7-30609652-C-T is Benign according to our data. Variant chr7-30609652-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 188100.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr7-30609652-C-T is described in Lovd as [Benign]. Variant chr7-30609652-C-T is described in Lovd as [Likely_benign].
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00352 (536/152290) while in subpopulation NFE AF= 0.00546 (371/68004). AF 95% confidence interval is 0.005. There are 2 homozygotes in gnomad4. There are 231 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 536 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GARS1	NM_002047.4	c.803C>T	p.Thr268Ile	missense_variant	7/17	ENST00000389266.8	NP_002038.2
GARS1	NM_001316772.1	c.641C>T	p.Thr214Ile	missense_variant	7/17		NP_001303701.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GARS1	ENST00000389266.8	c.803C>T	p.Thr268Ile	missense_variant	7/17	1	NM_002047.4	ENSP00000373918	P2

Frequencies

GnomAD3 genomes AF: 0.00352 AC: 536 AN: 152172 Hom.: 2 Cov.: 33

Gnomad AFR AF: 0.000772

Gnomad AMI AF: 0.00219

Gnomad AMR AF: 0.00367

Gnomad ASJ AF: 0.00490

Gnomad EAS AF: 0.000192

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00358

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.00545

Gnomad OTH AF: 0.00860

GnomAD3 exomes AF: 0.00344 AC: 857 AN: 249452 Hom.: 3 AF XY: 0.00330 AC XY: 447 AN XY: 135340

Gnomad AFR exome AF: 0.000388

Gnomad AMR exome AF: 0.00171

Gnomad ASJ exome AF: 0.00745

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000523

Gnomad FIN exome AF: 0.00492

Gnomad NFE exome AF: 0.00503

Gnomad OTH exome AF: 0.00430

GnomAD4 exome AF: 0.00397 AC: 5805 AN: 1460850 Hom.: 19 Cov.: 30 AF XY: 0.00403 AC XY: 2929 AN XY: 726828

Gnomad4 AFR exome AF: 0.000628

Gnomad4 AMR exome AF: 0.00186

Gnomad4 ASJ exome AF: 0.00716

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000638

Gnomad4 FIN exome AF: 0.00436

Gnomad4 NFE exome AF: 0.00441

Gnomad4 OTH exome AF: 0.00461

GnomAD4 genome AF: 0.00352 AC: 536 AN: 152290 Hom.: 2 Cov.: 33 AF XY: 0.00310 AC XY: 231 AN XY: 74474

Gnomad4 AFR AF: 0.000770

Gnomad4 AMR AF: 0.00366

Gnomad4 ASJ AF: 0.00490

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00358

Gnomad4 NFE AF: 0.00546

Gnomad4 OTH AF: 0.00851

Alfa AF: 0.00497 Hom.: 2

Bravo AF: 0.00342

TwinsUK AF: 0.00216 AC: 8

ALSPAC AF: 0.00415 AC: 16

ESP6500AA AF: 0.00109 AC: 4

ESP6500EA AF: 0.00651 AC: 53

ExAC AF: 0.00317 AC: 383

Asia WGS AF: 0.000289 AC: 1 AN: 3476

EpiCase AF: 0.00573

EpiControl AF: 0.00533

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:18

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:9

Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Mar 13, 2018	- -
Likely benign, no assertion criteria provided	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Mar 11, 2016	- -
Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jul 01, 2024	GARS1: BS1, BS2 -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Likely benign, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	May 28, 2021	This variant is associated with the following publications: (PMID: 32028661, 29520015, 28594869, 27582484) -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Aug 15, 2023	- -

not specified Benign:3

Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Mar 31, 2015	- -
Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Feb 02, 2022	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. -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -

Charcot-Marie-Tooth disease Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Molecular Genetics Laboratory, London Health Sciences Centre

-

- -

Distal spinal muscular atrophy Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Charcot-Marie-Tooth disease type 2 Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

GARS1-related disorder Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Oct 17, 2019

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). -

Charcot-Marie-Tooth disease type 2D Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Neuronopathy, distal hereditary motor, type 5A Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.83
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Uncertain	-0.080
CADD	Uncertain	25
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.71	D
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.88	D
M_CAP	Uncertain	0.19	D
MetaRNN	Benign	0.011	T
MetaSVM	Uncertain	0.049	D
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.72	T
PROVEAN	Pathogenic	-5.1	D
REVEL	Pathogenic	0.65
Sift	Uncertain	0.0070	D
Sift4G	Pathogenic	0.0010	D
Polyphen		0.66	P
Vest4		0.48
MVP		0.66
MPC		0.99
ClinPred		0.11	T
GERP RS		4.9
Varity_R		0.48
gMVP		0.65

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: rs2230310; hg19: chr7-30649268;