chr12-123748778-CA-C

Position:

• chr12-123748778-CA-C

Variant summary

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

The NM_012463.4(ATP6V0A2):​c.1929delA​(p.Gln645fs) 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 Likely pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ATP6V0A2 NM_012463.4 frameshift
• Clinical Significance: Likely pathogenic no assertion criteria provided P:1 O:1
• Conservation: PhyloP100: -1.76

Genes affected

ATP6V0A2 (HGNC:18481): (ATPase H+ transporting V0 subunit a2) The protein encoded by this gene is a subunit of the vacuolar ATPase (v-ATPase), an heteromultimeric enzyme that is present in intracellular vesicles and in the plasma membrane of specialized cells, and which is essential for the acidification of diverse cellular components. V-ATPase is comprised of a membrane peripheral V(1) domain for ATP hydrolysis, and an integral membrane V(0) domain for proton translocation. The subunit encoded by this gene is a component of the V(0) domain. Mutations in this gene are a cause of both cutis laxa type II and wrinkly skin syndrome. [provided by RefSeq, Jul 2009]

ATP6V0A2 (HGNC:):

ACMG classification

Verdict is Pathogenic. Variant got 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 12-123748778-CA-C is Pathogenic according to our data. Variant chr12-123748778-CA-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 21495.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ATP6V0A2	NM_012463.4	c.1929delA	p.Gln645fs	frameshift_variant	15/20	ENST00000330342.8	NP_036595.2
ATP6V0A2	XM_024448910.2	c.1929delA	p.Gln645fs	frameshift_variant	15/19		XP_024304678.1
ATP6V0A2	XM_024448911.2	c.1416delA	p.Gln474fs	frameshift_variant	11/16		XP_024304679.1
ATP6V0A2	XM_024448912.2	c.1107delA	p.Gln371fs	frameshift_variant	8/13		XP_024304680.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ATP6V0A2	ENST00000330342.8	c.1929delA	p.Gln645fs	frameshift_variant	15/20	1	NM_012463.4	ENSP00000332247.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1 Other:1

Revision: no assertion criteria provided

Submissions by phenotype

Cutis laxa with osteodystrophy Pathogenic:1 Other:1

Likely pathogenic, no assertion criteria provided	curation	Department Of Genetics, Sultan Qaboos University Hospital, Sultan Qaboos University	Dec 30, 2017	- -
not provided, no classification provided	literature only	GeneReviews	-	- -

Computational scores

Source: dbNSFP v4.3

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs80356756; hg19: chr12-124233325;