rs1554331125

Variant names:

Variant summary

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

The NM_002137.4(HNRNPA2B1):c.797A>G(p.Asn266Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,458,950 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

HNRNPA2B1
NM_002137.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 4.75

Publications

0 publications found

Variant links:

Genes affected

HNRNPA2B1 (HGNC:5033): (heterogeneous nuclear ribonucleoprotein A2/B1) This gene belongs to the A/B subfamily of ubiquitously expressed heterogeneous nuclear ribonucleoproteins (hnRNPs). The hnRNPs are RNA binding proteins and they complex with heterogeneous nuclear RNA (hnRNA). These proteins are associated with pre-mRNAs in the nucleus and appear to influence pre-mRNA processing and other aspects of mRNA metabolism and transport. While all of the hnRNPs are present in the nucleus, some seem to shuttle between the nucleus and the cytoplasm. The hnRNP proteins have distinct nucleic acid binding properties. The protein encoded by this gene has two repeats of quasi-RRM domains that bind to RNAs. This gene has been described to generate two alternatively spliced transcript variants which encode different isoforms. [provided by RefSeq, Jul 2008]

HNRNPA2B1 Gene-Disease associations (from GenCC):

inclusion body myopathy with early-onset Paget disease with or without frontotemporal dementia 2
Inheritance: AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
oculopharyngeal muscular dystrophy 2
Inheritance: AD Classification: STRONG Submitted by: G2P
amyotrophic lateral sclerosis
Inheritance: AD Classification: MODERATE, LIMITED Submitted by: Genomics England PanelApp, ClinGen
inclusion body myopathy with Paget disease of bone and frontotemporal dementia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

HNRNPA2B1 links:

Genome browser will be placed here

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=0.19716454).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HNRNPA2B1	NM_002137.4 link	c.797A>G	p.Asn266Ser	missense_variant	Exon 8 of 11	ENST00000618183.5	NP_002128.1	P22626-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HNRNPA2B1	ENST00000618183.5 link	c.797A>G	p.Asn266Ser	missense_variant	Exon 8 of 11	5	NM_002137.4	ENSP00000478691.2		P22626-2A0A087WUI2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1458950

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

725868

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33206

American (AMR)

AF:

0.00

AC:

AN:

43756

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26064

East Asian (EAS)

AF:

0.00

AC:

AN:

39638

South Asian (SAS)

AF:

0.00

AC:

AN:

85744

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53404

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5752

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111122

Other (OTH)

AF:

0.0000166

AC:

AN:

60264

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000936

Hom.:

Bravo

AF:

0.0000113

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inclusion body myopathy with early-onset Paget disease with or without frontotemporal dementia 2

Uncertain:1

Jun 12, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In summary, this variant has uncertain impact on HNRNPA2B1 function. The available evidence is currently insufficient to determine its role in disease. Therefore, it has been classified as a Variant of Uncertain Significance. This sequence change replaces asparagine with serine at codon 278 of the HNRNPA2B1 protein (p.Asn278Ser). The asparagine residue is highly conserved and there is a small physicochemical difference between asparagine and serine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with an HNRNPA2B1-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C45"). -

not provided

Uncertain:1

Feb 18, 2021

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Not observed in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.086

BayesDel_addAF

Benign

-0.020

BayesDel_noAF

Benign

-0.27

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.20

.;T;.

Eigen

Benign

0.11

Eigen_PC

Benign

0.17

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.86

.;.;D

M_CAP

Benign

0.0054

MetaRNN

Benign

0.20

T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.5

.;L;.

PhyloP100

4.8

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-1.6

.;N;N

REVEL

Benign

0.20

Sift

Benign

0.25

.;T;T

Sift4G

Benign

0.20

.;T;T

Polyphen

0.034

B;B;B

Vest4

0.37, 0.36

MutPred

0.30

.;Gain of glycosylation at N278 (P = 0.0042);.;

MVP

0.79

MPC

1.3

ClinPred

0.77

GERP RS

4.9

RBP_binding_hub_radar

1.1

RBP_regulation_power_radar

2.8

Varity_R

0.51

gMVP

0.81

Mutation Taster

=83/17

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over