rs63751235

chr14-73198117-C-G

Variant summary

Our verdict is Pathogenic. Variant got 19 ACMG points: 19P and 0B. PM1 PM2 PM5 PP2 PP3_Strong PP5_Very_Strong

The NM_000021.4(PSEN1):c.856C>G(p.Leu286Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L286P) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PSEN1 NM_000021.4 missense
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:3 O:1
• Conservation: PhyloP100: 6.10

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]

ACMG classification

Verdict is Pathogenic. Variant got 19 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_000021.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr14-73198118-T-C is described in Lovd as [Pathogenic].
• PP2: Missense variant where missense usually causes diseases, PSEN1
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.95
• PP5: Variant 14-73198117-C-G is Pathogenic according to our data. Variant chr14-73198117-C-G is described in ClinVar as [Pathogenic]. Clinvar id is 18126.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr14-73198117-C-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PSEN1	NM_000021.4	c.856C>G	p.Leu286Val	missense_variant	8/12	ENST00000324501.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PSEN1	ENST00000324501.10	c.856C>G	p.Leu286Val	missense_variant	8/12	1	NM_000021.4	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 27

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:3 Other:1

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Pathogenic:2 Other:1

Pathogenic, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jun 01, 2021	- -
not provided, no classification provided	literature only	VIB Department of Molecular Genetics, University of Antwerp	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Athena Diagnostics	Jul 21, 2017	- -

Alzheimer disease 3 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jun 29, 1995

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Pathogenic	0.56	D
BayesDel_noAF	Pathogenic	0.57
Cadd	Uncertain	24
Dann	Uncertain	1.0
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.93
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Pathogenic	0.87	D
MetaRNN	Pathogenic	0.95	D;D;D;D;D
MetaSVM	Pathogenic	0.97	D
MutationTaster	Benign	1.0	A;A;A;A;A;A;A
PrimateAI	Uncertain	0.79	T
PROVEAN	Uncertain	-2.7	D;D;D;D;D
REVEL	Pathogenic	0.91
Sift	Pathogenic	0.0	D;D;D;D;D
Sift4G	Uncertain	0.0020	D;D;D;D;D
Polyphen		1.0	D;D;D;.;.
Vest4		0.96
MutPred		0.76		.;Gain of catalytic residue at Y288 (P = 0);.;Gain of catalytic residue at Y288 (P = 0);.;
MVP		0.98
MPC		1.5
ClinPred		0.98	D
GERP RS		5.8
Varity_R		0.84
gMVP		0.92

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

Other links and lift over

dbSNP: rs63751235; hg19: chr14-73664825;