Variant chr19-44908690-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1PP3_Strong

The NM_000041.4(APOE):c.394C>T(p.Arg132Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000447 in 1,566,230 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R132G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

APOE
NM_000041.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.65

Variant links:

Genes affected

APOE (HGNC:613): (apolipoprotein E) The protein encoded by this gene is a major apoprotein of the chylomicron. It binds to a specific liver and peripheral cell receptor, and is essential for the normal catabolism of triglyceride-rich lipoprotein constituents. This gene maps to chromosome 19 in a cluster with the related apolipoprotein C1 and C2 genes. Mutations in this gene result in familial dysbetalipoproteinemia, or type III hyperlipoproteinemia (HLP III), in which increased plasma cholesterol and triglycerides are the consequence of impaired clearance of chylomicron and VLDL remnants. [provided by RefSeq, Jun 2016]

APOE links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM1

In a region_of_interest 8 X 22 AA approximate tandem repeats (size 175) in uniprot entity APOE_HUMAN there are 20 pathogenic changes around while only 8 benign (71%) in NM_000041.4

PP3

MetaRNN computational evidence supports a deleterious effect, 0.964

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
APOE	NM_000041.4 linkuse as main transcript	c.394C>T	p.Arg132Cys	missense_variant	4/4	ENST00000252486.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
APOE	ENST00000252486.9 linkuse as main transcript	c.394C>T	p.Arg132Cys	missense_variant	4/4	1	NM_000041.4	P1
APOE	ENST00000425718.1 linkuse as main transcript	c.394C>T	p.Arg132Cys	missense_variant	3/3	1
APOE	ENST00000434152.5 linkuse as main transcript	c.472C>T	p.Arg158Cys	missense_variant	4/4	2
APOE	ENST00000446996.5 linkuse as main transcript	c.394C>T	p.Arg132Cys	missense_variant	4/4	2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000723

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:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000212

AC:

AN:

1413946

Hom.:

Cov.:

AF XY:

0.00000286

AC XY:

AN XY:

699392

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:

0.0000608

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152284

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74456

show subpopulations

Gnomad4 AFR

AF:

0.0000721

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ExAC

AF:

0.0000174

AC:

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

GeneDx

Jan 13, 2020

Reported in a Japanese patient with lipoprotein glomerulopathy who had neither plasma lipid or lipoprotein abnormalities nor elevated ApoE levels (Hagiwara et al., 2008); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; This variant is associated with the following publications: (PMID: 17967799) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.35

BayesDel_addAF

Pathogenic

0.21

BayesDel_noAF

Uncertain

0.060

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.59

D;T;.;.

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Uncertain

0.84

LIST_S2

Uncertain

0.94

D;D;D;D

M_CAP

Pathogenic

0.65

MetaRNN

Pathogenic

0.96

D;D;D;D

MetaSVM

Uncertain

0.44

MutationAssessor

Uncertain

2.3

M;.;.;.

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.57

PROVEAN

Pathogenic

-6.2

D;D;.;D

REVEL

Pathogenic

0.66

Sift

Pathogenic

0.0

D;D;.;D

Sift4G

Pathogenic

0.0010

D;D;D;D

Polyphen

1.0

D;.;.;.

Vest4

0.57

MutPred

0.81

Gain of catalytic residue at L133 (P = 0.0126);Gain of catalytic residue at L133 (P = 0.0126);.;Gain of catalytic residue at L133 (P = 0.0126);

MVP

0.96

MPC

1.9

ClinPred

0.98

GERP RS

5.3

RBP_binding_hub_radar

1.1

RBP_regulation_power_radar

3.9

Varity_R

0.81

gMVP

0.67

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