Genetic Variant GSAP:p.Asn544Lys (chr7-77330281-G-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_017439.4(GSAP):c.1632C>G(p.Asn544Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,214 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N544S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

GSAP
NM_017439.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.34

Publications

0 publications found

Variant links:

Genes affected

GSAP (HGNC:28042): (gamma-secretase activating protein) Accumulation of neurotoxic amyloid-beta is a major hallmark of Alzheimer disease (AD; MIM 104300). Formation of amyloid-beta is catalyzed by gamma-secretase (see PSEN1; MIM 104311), a protease with numerous substrates. PION, or GSAP, selectively increases amyloid-beta production through a mechanism involving its interaction with both gamma-secretase and its substrate, the amyloid-beta precursor protein (APP; MIM 104760) C-terminal fragment (APP-CTF) (He et al., 2010 [PubMed 20811458]).[supplied by OMIM, Nov 2010]

GSAP links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.18280667).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017439.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GSAP	NM_017439.4	MANE Select	c.1632C>G	p.Asn544Lys	missense	Exon 20 of 31	NP_059135.2	A4D1B5-1
GSAP	NM_001350896.2		c.1632C>G	p.Asn544Lys	missense	Exon 19 of 30	NP_001337825.1
GSAP	NM_001350897.2		c.1578C>G	p.Asn526Lys	missense	Exon 19 of 30	NP_001337826.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GSAP	ENST00000257626.12	TSL:1 MANE Select	c.1632C>G	p.Asn544Lys	missense	Exon 20 of 31	ENSP00000257626.7	A4D1B5-1
GSAP	ENST00000943097.1		c.1686C>G	p.Asn562Lys	missense	Exon 20 of 30	ENSP00000613156.1
GSAP	ENST00000880888.1		c.1632C>G	p.Asn544Lys	missense	Exon 20 of 30	ENSP00000550947.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

250964

AF XY:

0.00000737

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461214

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726928

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33464

American (AMR)

AF:

0.00

AC:

AN:

44694

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39688

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86200

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53410

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111486

Other (OTH)

AF:

0.00

AC:

AN:

60376

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.67

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.45

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.031

Eigen

Uncertain

0.50

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.80

M_CAP

Benign

0.0086

MetaRNN

Benign

0.18

MetaSVM

Benign

-0.97

MutationAssessor

Uncertain

2.5

PhyloP100

3.3

PrimateAI

Uncertain

0.54

PROVEAN

Benign

-0.94

REVEL

Benign

0.059

Sift

Benign

0.078

Sift4G

Uncertain

0.020

Polyphen

0.95

Vest4

0.51

MutPred

0.39

Gain of methylation at N544 (P = 0.0173)

MVP

0.41

MPC

0.17

ClinPred

0.61

GERP RS

4.5

PromoterAI

-0.040

Neutral

(source)

Varity_R

0.11

gMVP

0.58

Mutation Taster

=87/13

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over