Genetic Variant ATP6AP2:p.Ser95Ser (chrX-40591350-G-T) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBP7

The NM_005765.3(ATP6AP2):c.285G>T(p.Ser95Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000331 in 1,209,265 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. S95S) has been classified as Benign.

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 1 hem., cov: 23)

Exomes 𝑓: 9.1e-7 ( 0 hom. 1 hem. )

Consequence

ATP6AP2
NM_005765.3 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -2.90

Publications

2 publications found

Variant links:

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]

ATP6AP2 Gene-Disease associations (from GenCC):

ATP6AP2-related disorder
Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
congenital disorder of glycosylation, type IIr
Inheritance: AR, XL Classification: STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae)
syndromic X-linked intellectual disability Hedera type
Inheritance: XL Classification: STRONG, MODERATE, SUPPORTIVE, LIMITED Submitted by: Orphanet, Ambry Genetics, G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
X-linked parkinsonism-spasticity syndrome
Inheritance: XL, Unknown Classification: MODERATE, SUPPORTIVE, LIMITED Submitted by: Orphanet, Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)

ATP6AP2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

BP4

Computational evidence support a benign effect (REVEL=0.093).

BP7

Synonymous conserved (PhyloP=-2.9 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATP6AP2	NM_005765.3 link	c.285G>T	p.Ser95Ser	synonymous_variant	Exon 3 of 9	ENST00000636580.2	NP_005756.2	O75787-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ATP6AP2	ENST00000636580.2 link	c.285G>T	p.Ser95Ser	synonymous_variant	Exon 3 of 9	1	NM_005765.3	ENSP00000490083.1		O75787-1

Frequencies

GnomAD3 genomes

AF:

0.0000268

AC:

AN:

112101

Hom.:

Cov.:

show subpopulations

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:

0.0000563

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

9.11e-7

AC:

AN:

1097164

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

362616

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26372

American (AMR)

AF:

0.00

AC:

AN:

35193

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19373

East Asian (EAS)

AF:

0.00

AC:

AN:

30192

South Asian (SAS)

AF:

0.00

AC:

AN:

54097

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40507

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3937

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

841454

Other (OTH)

AF:

0.0000217

AC:

AN:

46039

GnomAD4 genome

AF:

0.0000268

AC:

AN:

112101

Hom.:

Cov.:

AF XY:

0.0000292

AC XY:

AN XY:

34283

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

30812

American (AMR)

AF:

0.00

AC:

AN:

10538

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2655

East Asian (EAS)

AF:

0.00

AC:

AN:

3605

South Asian (SAS)

AF:

0.00

AC:

AN:

2713

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6072

Middle Eastern (MID)

AF:

0.00

AC:

AN:

239

European-Non Finnish (NFE)

AF:

0.0000563

AC:

AN:

53272

Other (OTH)

AF:

0.00

AC:

AN:

1505

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.029673), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.400

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000151

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.88

CADD

Benign

0.28

(source)

DANN

Benign

0.48

PhyloP100

-2.9

PromoterAI

-0.077

Neutral

(source)

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

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X-40591350-G-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over