17-42468100-A-T

Position:

• chr17-42468100-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PP2 PP3_Moderate

The NM_001130021.3(ATP6V0A1):​c.287A>T​(p.Asp96Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ATP6V0A1 NM_001130021.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.29

Genes affected

ATP6V0A1 (HGNC:865): (ATPase H+ transporting V0 subunit a1) This gene encodes a component of vacuolar ATPase (V-ATPase), a multisubunit enzyme that mediates acidification of eukaryotic intracellular organelles. V-ATPase dependent organelle acidification is necessary for such intracellular processes as protein sorting, zymogen activation, receptor-mediated endocytosis, and synaptic vesicle proton gradient generation. V-ATPase is composed of a cytosolic V1 domain and a transmembrane V0 domain. The V1 domain consists of three A and three B subunits, two G subunits plus the C, D, E, F, and H subunits. The V1 domain contains the ATP catalytic site. The V0 domain consists of five different subunits: a, c, c', c", and d. Additional isoforms of many of the V1 and V0 subunit proteins are encoded by multiple genes or alternatively spliced transcript variants. This gene encodes one of three A subunit proteins and the encoded protein is associated with clathrin-coated vesicles. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), ATP6V0A1. . Gene score misZ 3.7439 (greater than the threshold 3.09). Trascript score misZ 4.4308 (greater than threshold 3.09). GenCC has associacion of gene with neurodevelopmental disorder with epilepsy and brain atrophy, complex neurodevelopmental disorder, developmental and epileptic encephalopathy 104.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.878

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ATP6V0A1	NM_001130021.3	c.287A>T	p.Asp96Val	missense_variant	4/22	ENST00000343619.9	NP_001123493.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ATP6V0A1	ENST00000343619.9	c.287A>T	p.Asp96Val	missense_variant	4/22	1	NM_001130021.3	ENSP00000342951	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Developmental and epileptic encephalopathy 104;C5774184:Neurodevelopmental disorder with epilepsy and brain atrophy Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

University of Washington Department of Laboratory Medicine, University of Washington

Aug 01, 2023

The p.Asp96Val variant in the ATP6V0A1 gene has not been previously reported in association with disease and was absent from large population databases, including the Genome Aggregation Database (http://gnomad.broadinstitute.org/). The ATP6V0A1 gene has fewer missense variants in the general population than expected. A low rate of missense variation may suggest that this gene is intolerant to missense variation. In silico tools predict that the p.Asp96Val variant is deleterious; however, these predictions have not been tested directly. Using ACMG guidelines, this variant was classified as a variant of uncertain significance (ACMG evidence codes used: PM2_supporting, PP2, PP3). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.90
BayesDel_addAF	Pathogenic	0.44	D
BayesDel_noAF	Pathogenic	0.39
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Benign	0.12	.;T;.;.;D;.;.
Eigen	Pathogenic	0.83
Eigen_PC	Pathogenic	0.84
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.91	D;D;D;D;D;D;D
M_CAP	Pathogenic	0.35	D
MetaRNN	Pathogenic	0.88	D;D;D;D;D;D;D
MetaSVM	Uncertain	0.79	D
MutationAssessor	Pathogenic	3.0	M;.;M;.;M;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D
PrimateAI	Pathogenic	0.86	D
PROVEAN	Pathogenic	-7.1	D;D;D;.;D;.;.
REVEL	Pathogenic	0.89
Sift	Uncertain	0.015	D;D;D;.;D;.;.
Sift4G	Benign	0.073	T;D;T;D;T;D;D
Polyphen		0.88	P;D;.;P;D;.;.
Vest4		0.90
MutPred		0.52		Loss of helix (P = 0.0033);Loss of helix (P = 0.0033);Loss of helix (P = 0.0033);Loss of helix (P = 0.0033);Loss of helix (P = 0.0033);Loss of helix (P = 0.0033);.;
MVP		0.57
MPC		2.3
ClinPred		1.0	D
GERP RS		6.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.82
gMVP		0.83

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr17-40620118;