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GeneBe

rs1171835963

Variant summary

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

The NM_016529.6(ATP8A2):c.2689G>A(p.Ala897Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000062 in 1,613,682 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

ATP8A2
NM_016529.6 missense

Scores

2
10
5

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.60
Variant links:
Genes affected
ATP8A2 (HGNC:13533): (ATPase phospholipid transporting 8A2) The protein encoded by this gene is a member of the P4 ATPase family of proteins, which are thought to be involved in a process called lipid flipping, whereby phospholipids are translocated inwards from the exoplasmic leaflet to the cytosolic leaflet of the cell membrane, which aids in generating and maintaining asymmetry in membrane lipids. This protein is predicted to contain an E1 E2 ATPase, a haloacid dehalogenase-like hydrolase (HAD) domain, and multiple transmembrane domains. Associations between this protein and cell cycle control protein 50A are important for translocation of phosphatidylserine across membranes. Mutations in this gene have been associated with a syndrome (CAMRQ4) characterized by cerebellar ataxia and cognitive disabilities. In addition, a translocation breakpoint within this gene was observed in an individual with neurological dysfunction. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2017]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
ATP8A2NM_016529.6 linkuse as main transcriptc.2689G>A p.Ala897Thr missense_variant 28/37 ENST00000381655.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
ATP8A2ENST00000381655.7 linkuse as main transcriptc.2689G>A p.Ala897Thr missense_variant 28/371 NM_016529.6 Q9NTI2-4

Frequencies

GnomAD3 genomes
AF:
0.0000132
AC:
2
AN:
152080
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000655
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:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000802
AC:
2
AN:
249412
Hom.:
0
AF XY:
0.00000739
AC XY:
1
AN XY:
135300
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000290
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000327
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000547
AC:
8
AN:
1461602
Hom.:
0
Cov.:
30
AF XY:
0.00000688
AC XY:
5
AN XY:
727140
show subpopulations
Gnomad4 AFR exome
AF:
0.0000299
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000116
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000450
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000132
AC:
2
AN:
152080
Hom.:
0
Cov.:
33
AF XY:
0.0000269
AC XY:
2
AN XY:
74266
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.0000655
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000147
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.00000756

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Cerebellar ataxia, intellectual disability, and dysequilibrium syndrome 4 Uncertain:1
Uncertain significance, criteria provided, single submitterresearchTIDEX, University of British Columbia-- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.62
BayesDel_addAF
Uncertain
0.068
T
BayesDel_noAF
Uncertain
-0.040
Cadd
Uncertain
25
Dann
Uncertain
1.0
Eigen
Uncertain
0.46
Eigen_PC
Uncertain
0.48
FATHMM_MKL
Uncertain
0.96
D
LIST_S2
Uncertain
0.89
D;D
M_CAP
Benign
0.061
D
MetaRNN
Uncertain
0.72
D;D
MetaSVM
Benign
-0.52
T
MutationTaster
Benign
1.0
D;D
PrimateAI
Pathogenic
0.91
D
PROVEAN
Uncertain
-3.5
D;.
REVEL
Uncertain
0.46
Sift
Benign
0.14
T;.
Sift4G
Benign
0.15
T;T
Vest4
0.74
MVP
0.81
MPC
0.67
ClinPred
0.93
D
GERP RS
4.4
Varity_R
0.38
gMVP
0.75

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.020
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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs1171835963; hg19: chr13-26402265; API