1-226875489-T-C

Variant names:

• chr1-226875489-T-C
• rs200607063
• NM_000447.3:c.-82T>C

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_Strong BS1_Supporting BS2

The NM_000447.3(PSEN2):​c.-82T>C variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00135 in 152,306 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 0.0013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PSEN2 NM_000447.3 5_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: 0.0980
• Publications: 0 publications found

Genes affected

PSEN2 (HGNC:9509): (presenilin 2) Alzheimer's disease (AD) patients with an inherited form of the disease carry mutations in the presenilin proteins (PSEN1 or PSEN2) or 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 act are protease enzymes. Two alternatively spliced transcript variants encoding different isoforms of PSEN2 have been identified. [provided by RefSeq, Jul 2008]

PSEN2 Gene-Disease associations (from GenCC):

• Alzheimer disease 4

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• early-onset autosomal dominant Alzheimer disease

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• familial isolated dilated cardiomyopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• dilated cardiomyopathy

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ENSG00000288674 (HGNC:):

ACMG classification

Our verdict: Benign. The variant received -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BS1: Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00135 (205/152306) while in subpopulation NFE AF = 0.000985 (67/68012). AF 95% confidence interval is 0.000795. There are 0 homozygotes in GnomAd4. There are 139 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High AC in GnomAd4 at 205 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000447.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PSEN2	NM_000447.3	MANE Select	c.-82T>C		5_prime_UTR	Exon 3 of 13	NP_000438.2	P49810-1
	PSEN2	NM_001437537.1		c.-82T>C		5_prime_UTR	Exon 2 of 12	NP_001424466.1
	PSEN2	NM_012486.3		c.-82T>C		5_prime_UTR	Exon 3 of 13	NP_036618.2	P49810-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PSEN2	ENST00000366783.8	TSL:5 MANE Select	c.-82T>C		5_prime_UTR	Exon 3 of 13	ENSP00000355747.3	P49810-1
	PSEN2	ENST00000366782.6	TSL:1	c.-338T>C		5_prime_UTR	Exon 2 of 13	ENSP00000355746.2	P49810-1
	ENSG00000288674	ENST00000366779.6	TSL:2	n.-82T>C		non_coding_transcript_exon	Exon 3 of 32	ENSP00000355741.2

Frequencies

GnomAD3 genomes AF: 0.00135 AC: 205 AN: 152188 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000169

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000196

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0120

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000985

Gnomad OTH AF: 0.000478

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 28 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 26

African (AFR) AC: 0 AN: 0

American (AMR) AC: 0 AN: 0

Ashkenazi Jewish (ASJ) AC: 0 AN: 0

East Asian (EAS) AC: 0 AN: 0

South Asian (SAS) AC: 0 AN: 0

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 4

Middle Eastern (MID) AC: 0 AN: 0

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 20

Other (OTH) AF: 0.00 AC: 0 AN: 4

GnomAD4 genome AF: 0.00135 AC: 205 AN: 152306 Hom.: 0 Cov.: 32 AF XY: 0.00187 AC XY: 139 AN XY: 74482

African (AFR) AF: 0.000168 AC: 7 AN: 41566

American (AMR) AF: 0.000196 AC: 3 AN: 15306

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.0120 AC: 127 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.000985 AC: 67 AN: 68012

Other (OTH) AF: 0.000473 AC: 1 AN: 2116

Alfa AF: 0.00106 Hom.: 0

Bravo AF: 0.000533

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Alzheimer disease 4 (1)
-	1	-	Dilated cardiomyopathy 1V (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	5.1
DANN	Benign	0.48
PhyloP100		0.098
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=300/0	polymorphism

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

Other links and lift over

dbSNP: rs200607063; hg19: chr1-227063190;