19-17337642-CAA-CGTG

Position:

• chr19-17337642-CAA-CGTG

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_032620.4(GTPBP3):​c.32_33delinsGTG​(p.Gln11ArgfsTer98) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: GTPBP3 NM_032620.4 frameshift
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 0.788

Genes affected

GTPBP3 (HGNC:14880): (GTP binding protein 3, mitochondrial) This locus encodes a GTP-binding protein. The encoded protein is localized to the mitochondria and may play a role in mitochondrial tRNA modification. Polymorphisms at this locus may be associated with severity of aminoglycoside-induced deafness, a disease associated with a mutation in the 12S rRNA. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Sep 2010]

ACMG classification

Verdict is Pathogenic. Variant got 11 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 40 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 19-17337643-AA-GTG is Pathogenic according to our data. Variant chr19-17337643-AA-GTG is described in ClinVar as [Pathogenic]. Clinvar id is 180619.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GTPBP3	NM_032620.4	c.32_33delinsGTG	p.Gln11ArgfsTer98	frameshift_variant	1/9	ENST00000324894.13
GTPBP3	NM_001128855.3	c.32_33delinsGTG	p.Gln11ArgfsTer98	frameshift_variant	1/9
GTPBP3	NM_133644.4	c.32_33delinsGTG	p.Gln11ArgfsTer98	frameshift_variant	1/8
GTPBP3	NM_001195422.1	c.120-365_120-364delinsGTG		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GTPBP3	ENST00000324894.13	c.32_33delinsGTG	p.Gln11ArgfsTer98	frameshift_variant	1/9	1	NM_032620.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

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

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Combined oxidative phosphorylation defect type 23 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Dec 04, 2014

- -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs886037736; hg19: chr19-17448452;