2-74530083-G-A

Position:

chr2-74530083-G-A

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_013247.5(HTRA2):c.77G>A(p.Gly26Glu) variant causes a missense change. The variant allele was found at a frequency of 0.0000639 in 1,596,014 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 (★★). Synonymous variant affecting the same amino acid position (i.e. G26G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000054 ( 0 hom. )

Consequence

HTRA2
NM_013247.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 4.01

Variant links:

Genes affected

HTRA2 (HGNC:14348): (HtrA serine peptidase 2) This gene encodes a serine protease. The protein has been localized in the endoplasmic reticulum and interacts with an alternatively spliced form of mitogen-activated protein kinase 14. The protein has also been localized to the mitochondria with release to the cytosol following apoptotic stimulus. The protein is thought to induce apoptosis by binding the apoptosis inhibitory protein baculoviral IAP repeat-containing 4. Nuclear localization of this protein has also been observed. Alternate splicing of this gene results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Mar 2016]

HTRA2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.062046736).

BS1

Variant frequency is greater than expected in population sas. gnomad4_exome allele frequency = 0.000054 (78/1443794) while in subpopulation SAS AF= 0.000641 (55/85810). AF 95% confidence interval is 0.000506. There are 0 homozygotes in gnomad4_exome. There are 49 alleles in male gnomad4_exome subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HTRA2	NM_013247.5 linkuse as main transcript	c.77G>A	p.Gly26Glu	missense_variant	1/8	ENST00000258080.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HTRA2	ENST00000258080.8 linkuse as main transcript	c.77G>A	p.Gly26Glu	missense_variant	1/8	1	NM_013247.5	P1	O43464-1

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000458

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000828

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000100

AC:

AN:

239548

Hom.:

AF XY:

0.000129

AC XY:

AN XY:

131638

show subpopulations

Gnomad AFR exome

AF:

0.000346

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000112

Gnomad SAS exome

AF:

0.000560

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000540

AC:

AN:

1443794

Hom.:

Cov.:

AF XY:

0.0000686

AC XY:

AN XY:

714436

show subpopulations

Gnomad4 AFR exome

AF:

0.000121

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000128

Gnomad4 SAS exome

AF:

0.000641

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000273

Gnomad4 OTH exome

AF:

0.000185

GnomAD4 genome

AF:

0.000158

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.000458

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000828

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000152

Hom.:

Bravo

AF:

0.000181

ESP6500AA

AF:

0.000234

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000141

AC:

Asia WGS

AF:

0.00260

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Parkinson disease 13, autosomal dominant, susceptibility to;C4310650:3-methylglutaconic aciduria type 8

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 08, 2021

- -

Parkinson disease 13, autosomal dominant, susceptibility to

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 28, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 30, 2023

This sequence change replaces glycine, which is neutral and non-polar, with glutamic acid, which is acidic and polar, at codon 26 of the HTRA2 protein (p.Gly26Glu). This variant is present in population databases (rs145946172, gnomAD 0.06%). This missense change has been observed in individual(s) with Parkinson disease (PMID: 21338583). ClinVar contains an entry for this variant (Variation ID: 898769). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.41

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.11

T;.;T

Eigen

Benign

-0.075

Eigen_PC

Benign

-0.042

FATHMM_MKL

Benign

0.15

LIST_S2

Benign

0.78

T;T;T

M_CAP

Benign

0.019

MetaRNN

Benign

0.062

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.69

N;N;.

MutationTaster

Benign

0.92

N;N

PrimateAI

Uncertain

0.66

PROVEAN

Benign

-0.94

N;N;N

REVEL

Benign

0.11

Sift

Benign

0.030

D;D;D

Sift4G

Benign

0.068

T;T;T

Polyphen

0.59

P;P;.

Vest4

0.61

MVP

0.60

MPC

1.9

ClinPred

0.11

GERP RS

5.0

RBP_binding_hub_radar

1.1

RBP_regulation_power_radar

3.2

Varity_R

0.22

gMVP

0.28

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