21-25881652-G-A
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Variant summary
Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2
The NM_000484.4(APP):c.*18C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000478 in 1,610,968 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 0.000020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000051 ( 0 hom. )
Consequence
APP
NM_000484.4 3_prime_UTR
NM_000484.4 3_prime_UTR
Scores
2
Clinical Significance
Conservation
PhyloP100: 1.86
Genes affected
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]
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ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -6 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.27).
BS2
High AC in GnomAdExome4 at 74 AD gene.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
APP | NM_000484.4 | c.*18C>T | 3_prime_UTR_variant | 18/18 | ENST00000346798.8 | NP_000475.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
APP | ENST00000346798 | c.*18C>T | 3_prime_UTR_variant | 18/18 | 1 | NM_000484.4 | ENSP00000284981.4 |
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152186Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.0000239 AC: 6AN: 251374Hom.: 0 AF XY: 0.0000368 AC XY: 5AN XY: 135868
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GnomAD4 exome AF: 0.0000507 AC: 74AN: 1458782Hom.: 0 Cov.: 30 AF XY: 0.0000441 AC XY: 32AN XY: 726014
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GnomAD4 genome AF: 0.0000197 AC: 3AN: 152186Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74346
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | CeGaT Center for Human Genetics Tuebingen | Jun 01, 2016 | - - |
Computational scores
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BayesDel_noAF
Benign
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Benign
DANN
Benign
RBP_binding_hub_radar
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Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at