Genetic Variant APPBP2:p.Asn24Ser (chr17-60525861-T-C) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_006380.5(APPBP2):c.71A>G(p.Asn24Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000031 in 1,613,868 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

APPBP2
NM_006380.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.03

Variant links:

Genes affected

APPBP2 (HGNC:622): (amyloid beta precursor protein binding protein 2) The protein encoded by this gene interacts with microtubules and is functionally associated with beta-amyloid precursor protein transport and/or processing. The beta-amyloid precursor protein is a cell surface protein with signal-transducing properties, and it is thought to play a role in the pathogenesis of Alzheimer's disease. The encoded protein may be involved in regulating cell death. This gene has been found to be highly expressed in breast cancer. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2013]

APPBP2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.28003654).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
APPBP2	NM_006380.5 link	c.71A>G	p.Asn24Ser	missense_variant	Exon 1 of 13	ENST00000083182.8	NP_006371.2	Q92624A0A024QZ47
APPBP2	NM_001282476.2 link	c.-54A>G		5_prime_UTR_variant	Exon 1 of 12		NP_001269405.1	Q92624

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
APPBP2	ENST00000083182.8 link	c.71A>G	p.Asn24Ser	missense_variant	Exon 1 of 13	1	NM_006380.5	ENSP00000083182.3		Q92624

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151992

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000796

AC:

AN:

251288

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135842

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461876

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727236

show subpopulations

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:

0.00000360

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151992

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74238

show subpopulations

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000312

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 22, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.71A>G (p.N24S) alteration is located in exon 1 (coding exon 1) of the APPBP2 gene. This alteration results from a A to G substitution at nucleotide position 71, causing the asparagine (N) at amino acid position 24 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.069

BayesDel_addAF

Benign

-0.073

BayesDel_noAF

Benign

-0.33

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.053

T;.

Eigen

Uncertain

0.21

Eigen_PC

Uncertain

0.30

FATHMM_MKL

Benign

0.57

LIST_S2

Uncertain

0.90

D;D

M_CAP

Benign

0.040

MetaRNN

Benign

0.28

T;T

MetaSVM

Benign

-0.40

MutationAssessor

Benign

1.5

L;.

PrimateAI

Uncertain

0.78

PROVEAN

Benign

-0.52

N;.

REVEL

Uncertain

0.35

Sift

Benign

0.52

T;.

Sift4G

Benign

0.81

T;.

Polyphen

0.71

P;.

Vest4

0.20

MutPred

0.31

Loss of helix (P = 0.0237);Loss of helix (P = 0.0237);

MVP

0.64

MPC

0.68

ClinPred

0.84

GERP RS

5.0

Varity_R

0.15

gMVP

0.41

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

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

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over