chr5-140691726-G-A

Variant names:

• chr5-140691726-G-A
• rs746617974
• NM_012208.4:c.78G>A

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_001278732.2(HARS2):​c.-233G>A variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000571 in 1,399,984 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000057 (0 hom.)
• Consequence: HARS2 NM_001278732.2 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.361
• Publications: 0 publications found

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]

HARS1 (HGNC:4816): (histidyl-tRNA synthetase 1) Aminoacyl-tRNA synthetases are a class of enzymes that charge tRNAs with their cognate amino acids. The protein encoded by this gene is a cytoplasmic enzyme which belongs to the class II family of aminoacyl-tRNA synthetases. The enzyme is responsible for the synthesis of histidyl-transfer RNA, which is essential for the incorporation of histidine into proteins. The gene is located in a head-to-head orientation with HARSL on chromosome five, where the homologous genes share a bidirectional promoter. The gene product is a frequent target of autoantibodies in the human autoimmune disease polymyositis/dermatomyositis. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

HARS1 Gene-Disease associations (from GenCC):

• autosomal dominant Charcot-Marie-Tooth disease type 2W

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
• Usher syndrome type 3B

  Inheritance: AR Classification: STRONG, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• Usher syndrome type 3

  Inheritance: AR Classification: SUPPORTIVE, NO_KNOWN Submitted by: ClinGen, Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BP6: Variant 5-140691726-G-A is Benign according to our data. Variant chr5-140691726-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 2093623.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001278732.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HARS2	NM_012208.4	MANE Select	c.78G>A	p.Ser26Ser	synonymous	Exon 1 of 13	NP_036340.1	P49590-1
	HARS2	NM_001278732.2		c.-233G>A		5_prime_UTR_premature_start_codon_gain	Exon 1 of 11	NP_001265661.1
	HARS2	NM_001363535.2		c.78G>A	p.Ser26Ser	synonymous	Exon 1 of 14	NP_001350464.1	A0A2R8Y5P7

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HARS2	ENST00000230771.9	TSL:1 MANE Select	c.78G>A	p.Ser26Ser	synonymous	Exon 1 of 13	ENSP00000230771.3	P49590-1
	HARS2	ENST00000510104.5	TSL:1	n.78G>A		non_coding_transcript_exon	Exon 1 of 6	ENSP00000423530.1	D6R9M5
	HARS2	ENST00000926034.1		c.78G>A	p.Ser26Ser	synonymous	Exon 1 of 13	ENSP00000596093.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000648 AC: 1 AN: 154434 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000169

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000571 AC: 8 AN: 1399984 Hom.: 0 Cov.: 30 AF XY: 0.00000869 AC XY: 6 AN XY: 690810

African (AFR) AF: 0.00 AC: 0 AN: 31696

American (AMR) AF: 0.00 AC: 0 AN: 35970

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25204

East Asian (EAS) AF: 0.00 AC: 0 AN: 35908

South Asian (SAS) AF: 0.0000126 AC: 1 AN: 79400

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 48482

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5702

European-Non Finnish (NFE) AF: 0.00000648 AC: 7 AN: 1079586

Other (OTH) AF: 0.00 AC: 0 AN: 58036

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	5.4
DANN	Benign	0.81
PhyloP100		-0.36
PromoterAI		-0.049	Neutral

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

Other links and lift over

dbSNP: rs746617974; hg19: chr5-140071311;