rs886037876

Variant names:

• chr9-92271537-A-C
• rs886037876
• NM_002161.6:c.1109T>G

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP3_Moderate PP5

The ENST00000443024.7(IARS1):​c.1109T>G​(p.Val370Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: IARS1 ENST00000443024.7 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 8.91
• Publications: 6 publications found

Genes affected

IARS1 (HGNC:5330): (isoleucyl-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. Isoleucine-tRNA synthetase belongs to the class-I aminoacyl-tRNA synthetase family and has been identified as a target of autoantibodies in the autoimmune disease polymyositis/dermatomyositis. Alternatively spliced transcript variants have been found. [provided by RefSeq, Nov 2012]

IARS1 Gene-Disease associations (from GenCC):

• growth retardation, intellectual developmental disorder, hypotonia, and hepatopathy

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.858
• PP5: Variant 9-92271537-A-C is Pathogenic according to our data. Variant chr9-92271537-A-C is described in ClinVar as Pathogenic. ClinVar VariationId is 253321.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000443024.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IARS1	NM_002161.6	MANE Select	c.1109T>G	p.Val370Gly	missense	Exon 11 of 34	NP_002152.2
	IARS1	NM_001378569.1		c.1172T>G	p.Val391Gly	missense	Exon 11 of 34	NP_001365498.1
	IARS1	NM_001378571.1		c.1130T>G	p.Val377Gly	missense	Exon 11 of 34	NP_001365500.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IARS1	ENST00000443024.7	TSL:5 MANE Select	c.1109T>G	p.Val370Gly	missense	Exon 11 of 34	ENSP00000406448.4
	IARS1	ENST00000375643.7	TSL:1	c.1109T>G	p.Val370Gly	missense	Exon 11 of 34	ENSP00000364794.3
	IARS1	ENST00000447699.7	TSL:1	n.1109T>G		non_coding_transcript_exon	Exon 11 of 35	ENSP00000415020.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Growth retardation, intellectual developmental disorder, hypotonia, and hepatopathy (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.85
BayesDel_addAF	Pathogenic	0.44	D
BayesDel_noAF	Pathogenic	0.40
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.61	D
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.86
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Uncertain	0.24	D
MetaRNN	Pathogenic	0.86	D
MetaSVM	Pathogenic	0.88	D
MutationAssessor	Pathogenic	4.9	H
PhyloP100		8.9
PrimateAI	Uncertain	0.48	T
PROVEAN	Pathogenic	-6.8	D
REVEL	Pathogenic	0.91
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.63
MutPred		0.75		Gain of disorder (P = 0.0087)
MVP		0.96
MPC		0.58
ClinPred		1.0	D
GERP RS		5.2
Varity_R		0.98
gMVP		0.92
Mutation Taster		=138/162	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.070		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs886037876; hg19: chr9-95033819;