rs1554337983

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM1PM2PP3

The NM_002047.4(GARS1):c.818C>T(p.Ser273Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,966 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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

GARS1
NM_002047.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.82

Publications

0 publications found

Variant links:

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]

GARS1 Gene-Disease associations (from GenCC):

Charcot-Marie-Tooth disease type 2D
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Orphanet
neuronopathy, distal hereditary motor, type 5A
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Illumina, Laboratory for Molecular Medicine
spinal muscular atrophy, infantile, James type
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics

GARS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 6 uncertain in NM_002047.4

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.79

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GARS1	NM_002047.4 link	c.818C>T	p.Ser273Phe	missense_variant	Exon 7 of 17	ENST00000389266.8	NP_002038.2	P41250-1
GARS1	NM_001316772.1 link	c.656C>T	p.Ser219Phe	missense_variant	Exon 7 of 17		NP_001303701.1	P41250-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
GARS1	ENST00000389266.8 link	c.818C>T	p.Ser273Phe	missense_variant	Exon 7 of 17	1	NM_002047.4	ENSP00000373918.3	P41250-1
GARS1	ENST00000675651.1 link	c.818C>T	p.Ser273Phe	missense_variant	Exon 7 of 17			ENSP00000502513.1	A0A6Q8PGZ8
GARS1	ENST00000675810.1 link	c.716C>T	p.Ser239Phe	missense_variant	Exon 6 of 16			ENSP00000502743.1	A0A6Q8PHH9
GARS1	ENST00000675693.1 link	c.650C>T	p.Ser217Phe	missense_variant	Exon 8 of 18			ENSP00000502174.1	A0A6Q8PGA8
GARS1	ENST00000675051.1 link	c.617C>T	p.Ser206Phe	missense_variant	Exon 7 of 17			ENSP00000502296.1	A0A6Q8PGI6
GARS1	ENST00000674815.1 link	c.449C>T	p.Ser150Phe	missense_variant	Exon 7 of 17			ENSP00000502799.1	A0A6Q8PGW4
GARS1	ENST00000674851.1 link	c.449C>T	p.Ser150Phe	missense_variant	Exon 8 of 18			ENSP00000502451.1	A0A6Q8PGW4
GARS1	ENST00000444666.6 link	n.818C>T		non_coding_transcript_exon_variant	Exon 7 of 18	3		ENSP00000415447.2	H7C443
GARS1	ENST00000674616.1 link	n.*532C>T		non_coding_transcript_exon_variant	Exon 8 of 18			ENSP00000502408.1	A0A6Q8PGT3
GARS1	ENST00000674643.1 link	n.818C>T		non_coding_transcript_exon_variant	Exon 7 of 17			ENSP00000501636.1	A0A6Q8PF45
GARS1	ENST00000674737.1 link	n.*156C>T		non_coding_transcript_exon_variant	Exon 8 of 18			ENSP00000502464.1	A0A6Q8PGZ9
GARS1	ENST00000674807.1 link	n.818C>T		non_coding_transcript_exon_variant	Exon 7 of 16			ENSP00000502814.1	A0A6Q8PFZ6
GARS1	ENST00000675529.1 link	n.*688C>T		non_coding_transcript_exon_variant	Exon 8 of 18			ENSP00000501655.1	A0A6Q8PFN0
GARS1	ENST00000675859.1 link	n.818C>T		non_coding_transcript_exon_variant	Exon 7 of 15			ENSP00000502033.1	A0A6Q8PFZ6
GARS1	ENST00000676088.1 link	n.*760C>T		non_coding_transcript_exon_variant	Exon 9 of 19			ENSP00000501884.1	A0A6Q8PFN0
GARS1	ENST00000676140.1 link	n.818C>T		non_coding_transcript_exon_variant	Exon 7 of 17			ENSP00000502571.1	A0A6Q8PH49
GARS1	ENST00000676164.1 link	n.*269C>T		non_coding_transcript_exon_variant	Exon 7 of 17			ENSP00000501986.1	A0A6Q8PFV5
GARS1	ENST00000676210.1 link	n.*107C>T		non_coding_transcript_exon_variant	Exon 8 of 18			ENSP00000502373.1	A0A6Q8PGN7
GARS1	ENST00000676259.1 link	n.*250C>T		non_coding_transcript_exon_variant	Exon 7 of 17			ENSP00000501980.1	A0A6Q8PFU7
GARS1	ENST00000676403.1 link	n.818C>T		non_coding_transcript_exon_variant	Exon 7 of 16			ENSP00000502681.1	A0A6Q8PHI7
GARS1	ENST00000674616.1 link	n.*532C>T		3_prime_UTR_variant	Exon 8 of 18			ENSP00000502408.1	A0A6Q8PGT3
GARS1	ENST00000674737.1 link	n.*156C>T		3_prime_UTR_variant	Exon 8 of 18			ENSP00000502464.1	A0A6Q8PGZ9
GARS1	ENST00000675529.1 link	n.*688C>T		3_prime_UTR_variant	Exon 8 of 18			ENSP00000501655.1	A0A6Q8PFN0
GARS1	ENST00000676088.1 link	n.*760C>T		3_prime_UTR_variant	Exon 9 of 19			ENSP00000501884.1	A0A6Q8PFN0
GARS1	ENST00000676164.1 link	n.*269C>T		3_prime_UTR_variant	Exon 7 of 17			ENSP00000501986.1	A0A6Q8PFV5
GARS1	ENST00000676210.1 link	n.*107C>T		3_prime_UTR_variant	Exon 8 of 18			ENSP00000502373.1	A0A6Q8PGN7
GARS1	ENST00000676259.1 link	n.*250C>T		3_prime_UTR_variant	Exon 7 of 17			ENSP00000501980.1	A0A6Q8PFU7

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1460966

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726852

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33452

American (AMR)

AF:

0.00

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26120

East Asian (EAS)

AF:

0.00

AC:

AN:

39626

South Asian (SAS)

AF:

0.00

AC:

AN:

86234

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53398

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111288

Other (OTH)

AF:

0.00

AC:

AN:

60366

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.350

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Charcot-Marie-Tooth disease type 2

Uncertain:1

Apr 18, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C15"). ClinVar contains an entry for this variant (Variation ID: 543165). This variant has not been reported in the literature in individuals affected with GARS-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces serine, which is neutral and polar, with phenylalanine, which is neutral and non-polar, at codon 273 of the GARS protein (p.Ser273Phe). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.58

BayesDel_addAF

Uncertain

0.14

BayesDel_noAF

Uncertain

-0.030

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.65

Eigen

Pathogenic

0.72

Eigen_PC

Pathogenic

0.68

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

M_CAP

Uncertain

0.15

MetaRNN

Pathogenic

0.79

MetaSVM

Uncertain

0.30

PhyloP100

7.8

PrimateAI

Uncertain

0.62

PROVEAN

Pathogenic

-4.4

REVEL

Uncertain

0.63

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0040

Polyphen

0.98

Vest4

0.51

MutPred

0.64

Loss of disorder (P = 0.0088);

MVP

0.62

MPC

1.1

ClinPred

1.0

GERP RS

5.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.2

Varity_R

0.62

gMVP

0.71

Mutation Taster

=41/59

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over