14-73170827-G-A

Position:

chr14-73170827-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM1PP2BP4BS2_Supporting

The NM_000021.4(PSEN1):c.118G>A(p.Asp40Asn) variant causes a missense change. The variant allele was found at a frequency of 0.00000372 in 1,613,300 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: 0.0000034 ( 0 hom. )

Consequence

PSEN1
NM_000021.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.68

Variant links:

Genes affected

PSEN1 (HGNC:9508): (presenilin 1) Alzheimer's disease (AD) patients with an inherited form of the disease carry mutations in the presenilin proteins (PSEN1; PSEN2) or in the amyloid precursor protein (APP). These disease-linked mutations result in increased production of the longer form of amyloid-beta (main component of amyloid deposits found in AD brains). Presenilins are postulated to regulate APP processing through their effects on gamma-secretase, an enzyme that cleaves APP. Also, it is thought that the presenilins are involved in the cleavage of the Notch receptor, such that they either directly regulate gamma-secretase activity or themselves are protease enzymes. Several alternatively spliced transcript variants encoding different isoforms have been identified for this gene, the full-length nature of only some have been determined. [provided by RefSeq, Aug 2008]

PSEN1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM1

In a chain Presenilin-1 NTF subunit (size 297) in uniprot entity PSN1_HUMAN there are 290 pathogenic changes around while only 8 benign (97%) in NM_000021.4

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PSEN1. . Gene score misZ 2.1558 (greater than the threshold 3.09). Trascript score misZ 3.0986 (greater than threshold 3.09). GenCC has associacion of gene with acne inversa, familial, 3, dilated cardiomyopathy, Alzheimer disease 3, early-onset autosomal dominant Alzheimer disease, semantic dementia, Pick disease, familial isolated dilated cardiomyopathy, dilated cardiomyopathy 1U, behavioral variant of frontotemporal dementia.

BP4

Computational evidence support a benign effect (MetaRNN=0.2850898).

BS2

High AC in GnomAdExome4 at 5 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PSEN1	NM_000021.4 linkuse as main transcript	c.118G>A	p.Asp40Asn	missense_variant	4/12	ENST00000324501.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PSEN1	ENST00000324501.10 linkuse as main transcript	c.118G>A	p.Asp40Asn	missense_variant	4/12	1	NM_000021.4	P4	P49768-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152162

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:

0.0000119

AC:

AN:

251340

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135860

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:

0.0000264

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461138

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

726840

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:

0.0000374

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152162

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74334

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

Bravo

AF:

0.0000189

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

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

Apr 03, 2024

Variant summary: PSEN1 c.118G>A (p.Asp40Asn) results in a conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 1.2e-05 in 251340 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.118G>A has been reported in the literature in an individual affected with restrictive cardiomyopathy (Lu_2018) and at least one individual affected with a neurodegenerative disorder (Acosta-Uribe_2022), without strong evidence suggesting pathogenicity. These reports do not provide unequivocal conclusions about association of the variant with Alzheimer Disease, Type 3. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 35260199, 30165862). No submitters have cited clinical-significance assessments for this variant to ClinVar. Based on the evidence outlined above, the variant was classified as uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.077

BayesDel_addAF

Uncertain

0.075

BayesDel_noAF

Uncertain

-0.070

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.019

T;T;.;.;.;.;.;.;.;T;.;T;.;.;.;.;.

Eigen

Benign

-0.31

Eigen_PC

Benign

-0.17

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.87

D;D;T;.;D;D;T;D;.;D;T;D;D;D;T;D;D

M_CAP

Pathogenic

0.31

MetaRNN

Benign

0.29

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Uncertain

0.74

MutationAssessor

Benign

0.69

.;.;.;.;.;.;.;N;.;N;.;.;.;.;.;.;N

MutationTaster

Benign

1.0

D;N;N;N;N;N;N;N

PrimateAI

Benign

0.34

PROVEAN

Benign

-1.0

N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N

REVEL

Uncertain

0.45

Sift

Benign

0.36

T;D;T;T;T;T;T;T;T;T;T;T;T;D;T;D;T

Sift4G

Benign

0.33

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;D;T

Polyphen

0.64, 0.0040, 0.036

.;.;.;.;.;.;.;P;B;B;.;.;.;.;B;.;.

Vest4

0.20, 0.18, 0.21, 0.22

MutPred

0.21

.;.;.;.;Gain of helix (P = 0.0117);.;.;Gain of helix (P = 0.0117);.;Gain of helix (P = 0.0117);.;Gain of helix (P = 0.0117);Gain of helix (P = 0.0117);.;.;.;Gain of helix (P = 0.0117);

MVP

0.83

MPC

0.51

ClinPred

0.30

GERP RS

4.7

Varity_R

0.042

gMVP

0.25

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

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