Genetic Variant HARS2:c.109-111delC (chr5-140693478-TC-T) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP6BS1

The NM_012208.4(HARS2):c.109-111delC variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000366 in 1,592,248 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely benign (no stars).

Frequency

Genomes: 𝑓 0.00023 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00038 ( 0 hom. )

Consequence

HARS2
NM_012208.4 intron

Scores

Not classified

Clinical Significance

Likely benign no assertion criteria provided B:1

Conservation

PhyloP100: -0.422

Variant links:

Genes affected

HARS2 (HGNC:4817): (histidyl-tRNA synthetase 2, mitochondrial) Aminoacyl-tRNA synthetases are a class of enzymes that charge tRNAs with their cognate amino acids. The protein encoded by this gene is an enzyme belonging to the class II family of aminoacyl-tRNA synthetases. Functioning in the synthesis of histidyl-transfer RNA, the enzyme plays an accessory role in the regulation of protein biosynthesis. The gene is located in a head-to-head orientation with HARS on chromosome five, where the homologous genes likely share a bidirectional promoter. Mutations in this gene are associated with the pathogenesis of Perrault syndrome, which involves ovarian dysgenesis and sensorineural hearing loss. Alternative splicing results in multiple transcript variants of this gene. [provided by RefSeq, Jul 2013]

HARS2 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP6

Variant 5-140693478-TC-T is Benign according to our data. Variant chr5-140693478-TC-T is described in ClinVar as [Likely_benign]. Clinvar id is 3048804.Status of the report is no_assertion_criteria_provided, 0 stars.

BS1

Variant frequency is greater than expected in population nfe. gnomad4_exome allele frequency = 0.000381 (548/1439920) while in subpopulation NFE AF= 0.000461 (507/1100576). AF 95% confidence interval is 0.000427. There are 0 homozygotes in gnomad4_exome. There are 266 alleles in male gnomad4_exome subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HARS2	NM_012208.4 link	c.109-111delC		intron_variant	Intron 1 of 12	ENST00000230771.9	NP_036340.1	P49590-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HARS2	ENST00000230771.9 link	c.109-111delC		intron_variant	Intron 1 of 12	1	NM_012208.4	ENSP00000230771.3		P49590-1

Frequencies

GnomAD3 genomes

AF:

0.000230

AC:

AN:

152210

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000397

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000190

AC:

AN:

215752

Hom.:

AF XY:

0.000171

AC XY:

AN XY:

116972

show subpopulations

Gnomad AFR exome

AF:

0.0000753

Gnomad AMR exome

AF:

0.0000324

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000107

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000374

Gnomad OTH exome

AF:

0.000182

GnomAD4 exome

AF:

0.000381

AC:

548

AN:

1439920

Hom.:

Cov.:

AF XY:

0.000372

AC XY:

266

AN XY:

715156

show subpopulations

Gnomad4 AFR exome

AF:

0.000185

Gnomad4 AMR exome

AF:

0.0000483

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000107

Gnomad4 FIN exome

AF:

0.0000571

Gnomad4 NFE exome

AF:

0.000461

Gnomad4 OTH exome

AF:

0.000353

GnomAD4 genome

AF:

0.000230

AC:

AN:

152328

Hom.:

Cov.:

AF XY:

0.000201

AC XY:

AN XY:

74496

show subpopulations

Gnomad4 AFR

AF:

0.000120

Gnomad4 AMR

AF:

0.0000653

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.000397

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000391

Hom.:

Bravo

AF:

0.000298

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

HARS2-related disorder

Benign:1

Oct 28, 2020

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

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). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.10

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over