rs745748841

Positions:

• chrX-40597263-T-A
• chrX-40597263-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_005765.3(ATP6AP2):​c.315T>A​(p.Ser105Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000249 in 1,203,340 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0000089 (0 hom., 0 hem., cov: 23)
  • Exomes 𝑓: 0.0000018 (0 hom. 0 hem.)
• Consequence: ATP6AP2 NM_005765.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.411

Genes affected

ATP6AP2 (HGNC:18305): (ATPase H+ transporting accessory protein 2) This gene encodes a protein that is associated with adenosine triphosphatases (ATPases). Proton-translocating ATPases have fundamental roles in energy conservation, secondary active transport, acidification of intracellular compartments, and cellular pH homeostasis. There are three classes of ATPases- F, P, and V. The vacuolar (V-type) ATPases have a transmembrane proton-conducting sector and an extramembrane catalytic sector. The encoded protein has been found associated with the transmembrane sector of the V-type ATPases. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.21570784).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ATP6AP2	NM_005765.3	c.315T>A	p.Ser105Arg	missense_variant	4/9	ENST00000636580.2	NP_005756.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ATP6AP2	ENST00000636580.2	c.315T>A	p.Ser105Arg	missense_variant	4/9	1	NM_005765.3	ENSP00000490083	P3

Frequencies

GnomAD3 genomes AF: 0.00000888 AC: 1 AN: 112604 Hom.: 0 Cov.: 23 AF XY: 0.00 AC XY: 0 AN XY: 34752

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.0000188

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000183 AC: 2 AN: 1090736 Hom.: 0 Cov.: 28 AF XY: 0.00 AC XY: 0 AN XY: 357444

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000239

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.00000888 AC: 1 AN: 112604 Hom.: 0 Cov.: 23 AF XY: 0.00 AC XY: 0 AN XY: 34752

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000188

Gnomad4 OTH AF: 0.00

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Syndromic X-linked intellectual disability Hedera type Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 04, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals affected with ATP6AP2-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces serine, which is neutral and polar, with arginine, which is basic and polar, at codon 105 of the ATP6AP2 protein (p.Ser105Arg). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.83
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.48
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.10	T;T;T;T;T;.;.;T;T
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.96	D;D;D;D;D;D;D;D;D
M_CAP	Benign	0.074	D
MetaRNN	Benign	0.22	T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.80	T
MutationAssessor	Benign	1.9	.;L;.;.;.;.;.;.;.
MutationTaster	Benign	0.99	D;D;D;D
PrimateAI	Uncertain	0.67	T
PROVEAN	Uncertain	-3.0	D;.;.;.;.;N;.;.;N
REVEL	Benign	0.15
Sift	Uncertain	0.0030	D;.;.;.;.;D;.;.;T
Sift4G	Uncertain	0.0030	.;.;.;.;.;D;.;.;.
Polyphen		0.88	.;P;.;.;.;.;.;.;.
Vest4		0.55
MutPred		0.42		.;Loss of glycosylation at S105 (P = 0.0289);.;.;Loss of glycosylation at S105 (P = 0.0289);Loss of glycosylation at S105 (P = 0.0289);Loss of glycosylation at S105 (P = 0.0289);.;Loss of glycosylation at S105 (P = 0.0289);
MVP		0.55
MPC		1.0
ClinPred		0.80	D
GERP RS		1.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.65
gMVP		0.66

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs745748841; hg19: chrX-40456515;