Variant 21-26171136-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The ENST00000455275.1(ENSG00000224541):n.178-4474G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000217 in 152,188 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00022 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

ENSG00000224541
ENST00000455275.1 intron

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.548

Variant links:

Genes affected

ENSG00000224541 (HGNC:):

ENSG00000224541 links:

APP (HGNC:620): (amyloid beta precursor protein) This gene encodes a cell surface receptor and transmembrane precursor protein that is cleaved by secretases to form a number of peptides. Some of these peptides are secreted and can bind to the acetyltransferase complex APBB1/TIP60 to promote transcriptional activation, while others form the protein basis of the amyloid plaques found in the brains of patients with Alzheimer disease. In addition, two of the peptides are antimicrobial peptides, having been shown to have bacteriocidal and antifungal activities. Mutations in this gene have been implicated in autosomal dominant Alzheimer disease and cerebroarterial amyloidosis (cerebral amyloid angiopathy). Multiple transcript variants encoding several different isoforms have been found for this gene. [provided by RefSeq, Aug 2014]

APP links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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 (BayesDel_noAF=-0.32).

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Protein	UniProt
APP-DT	NR_186395.1 linkuse as main transcript	n.186+84G>C	intron_variant
APP-DT	NR_186396.1 linkuse as main transcript	n.186+84G>C	intron_variant
APP	NM_001136131.3 linkuse as main transcript	c.-200C>G	upstream_gene_variant	NP_001129603.1	P05067A0A0A0MRG2B4DJT9

Ensembl

Gene	Transcript	HGVSc	Effect	TSL
ENSG00000224541	ENST00000455275.1 linkuse as main transcript	n.178-4474G>C	intron_variant	2
APP-DT	ENST00000608591.5 linkuse as main transcript	n.182+84G>C	intron_variant	4
APP-DT	ENST00000609365.2 linkuse as main transcript	n.172+84G>C	intron_variant	4

Frequencies

GnomAD3 genomes

AF:

0.000217

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000323

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

732

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

370

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000217

AC:

AN:

152188

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74350

show subpopulations

Gnomad4 AFR

AF:

0.000121

Gnomad4 AMR

AF:

0.000327

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.000323

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000212

Hom.:

Bravo

AF:

0.000223

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Oct 12, 2023

Variant summary: APP c.-516C>G (listed as c.-369C>G in literature) is located in the untranscribed region upstream of the APP gene region. The variant allele was found at a frequency of 0.00022 in 150960 control chromosomes. c.-516C>G has been reported in the literature in individuals affected with Alzheimer Disease (Brouwer_200, Theuns_2006) however also observed in an unaffected control. These data indicate that the variant may be associated with disease. At least one publication reports experimental evidence evaluating an impact on protein function demonstrating neuron-specific increase of APP transcription of about 2 fold (Theuns_2006). The following publications have been ascertained in the context of this evaluation (PMID: 16931535, 16685645). No submitters have cited clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as VUS-possibly pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.32

CADD

Benign

DANN

Benign

0.90

Splicing

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