chr6-44299259-CTTCT-C

Position:

• chr6-44299259-CTTCT-C

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BS1_Supporting BS2

The NM_020745.4(AARS2):​c.*1284_*1287del variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.034 (10 hom., cov: 0)
• Consequence: AARS2 NM_020745.4 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.885

Genes affected

AARS2 (HGNC:21022): (alanyl-tRNA synthetase 2, mitochondrial) The protein encoded by this gene belongs to the class-II aminoacyl-tRNA synthetase family. Aminoacyl-tRNA synthetases play critical roles in mRNA translation by charging tRNAs with their cognate amino acids. The encoded protein is a mitochondrial enzyme that specifically aminoacylates alanyl-tRNA. Mutations in this gene are a cause of combined oxidative phosphorylation deficiency 8. [provided by RefSeq, Dec 2011]

POLR1C (HGNC:):

TMEM151B (HGNC:21315): (transmembrane protein 151B) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -5 ACMG points.

• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0345 (1035/30022) while in subpopulation AFR AF= 0.0439 (969/22072). AF 95% confidence interval is 0.0416. There are 10 homozygotes in gnomad4. There are 468 alleles in male gnomad4 subpopulation. Median coverage is 0. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High Homozygotes in GnomAd4 at 10 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
AARS2	NM_020745.4	c.*1284_*1287del		3_prime_UTR_variant	22/22	ENST00000244571.5	NP_065796.2
AARS2	XM_005249245.4	c.*1284_*1287del		3_prime_UTR_variant	20/20		XP_005249302.1
POLR1C	NM_001318876.2	c.946-142628_946-142625del		intron_variant			NP_001305805.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AARS2	ENST00000244571.5	c.*1284_*1287del		3_prime_UTR_variant	22/22	1	NM_020745.4	ENSP00000244571	P1
TMEM151B	ENST00000438774.2	c.577-7681_577-7678del		intron_variant		3		ENSP00000409337

Frequencies

GnomAD3 genomes AF: 0.0345 AC: 1033 AN: 29984 Hom.: 10 Cov.: 0

Gnomad AFR AF: 0.0439

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0294

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.0187

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0345 AC: 1035 AN: 30022 Hom.: 10 Cov.: 0 AF XY: 0.0326 AC XY: 468 AN XY: 14342

Gnomad4 AFR AF: 0.0439

Gnomad4 AMR AF: 0.0294

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.0183

Alfa AF: 0.00556 Hom.: 2

Asia WGS AF: 0.00134 AC: 5 AN: 3006

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Combined oxidative phosphorylation deficiency Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Computational scores

Source: dbNSFP v4.3

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: rs201274623; hg19: chr6-44266996;