chr22-29674892-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP6BS2

The NM_000268.4(NF2):c.1397G>A(p.Arg466Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000105 in 1,422,436 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R466L) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

NF2
NM_000268.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 8.12

Publications

9 publications found

Variant links:

Genes affected

NF2 (HGNC:7773): (NF2, moesin-ezrin-radixin like (MERLIN) tumor suppressor) This gene encodes a protein that is similar to some members of the ERM (ezrin, radixin, moesin) family of proteins that link cytoskeletal components with proteins in the cell membrane. The encoded protein is involved in regulation of contact-dependent inhibition of cell proliferation and functions in cell-cell adhesion and transmembrane signaling. The encoded protein has been shown to interact with cell-surface proteins, proteins involved in cytoskeletal dynamics, and proteins involved in regulating ion transport. Disruption of this protein's function has been implicated in tumorigenesis and metastasis. Mutations in this gene are associated with neurofibromatosis type II which is characterized by nervous system and skin tumors and ocular abnormalities. [provided by RefSeq, May 2022]

NF2 Gene-Disease associations (from GenCC):

NF2-related schwannomatosis
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), G2P
familial meningioma
Inheritance: Unknown Classification: LIMITED Submitted by: Ambry Genetics

NF2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP6

Variant 22-29674892-G-A is Benign according to our data. Variant chr22-29674892-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 457899.

BS2

High AC in GnomAdExome4 at 15 AD,Unknown gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NF2	NM_000268.4 link	c.1397G>A	p.Arg466Gln	missense_variant	Exon 13 of 16	ENST00000338641.10	NP_000259.1	P35240-1A0A024R1J8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NF2	ENST00000338641.10 link	c.1397G>A	p.Arg466Gln	missense_variant	Exon 13 of 16	1	NM_000268.4	ENSP00000344666.5		P35240-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00

AC:

AN:

188842

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000105

AC:

AN:

1422436

Hom.:

Cov.:

AF XY:

0.0000142

AC XY:

AN XY:

703600

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32614

American (AMR)

AF:

0.00

AC:

AN:

39444

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25380

East Asian (EAS)

AF:

0.0000530

AC:

AN:

37764

South Asian (SAS)

AF:

0.0000124

AC:

AN:

80798

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50548

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5728

European-Non Finnish (NFE)

AF:

0.0000101

AC:

AN:

1091258

Other (OTH)

AF:

0.0000170

AC:

AN:

58902

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000225

Hom.:

Bravo

AF:

0.00000756

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Neurofibromatosis, type 2

Uncertain:1Benign:1

Nov 07, 2021

Genome-Nilou Lab

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 13, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Uncertain:1

Aug 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

NF2: PM2, BP1 -

Hereditary cancer-predisposing syndrome

Uncertain:1

Sep 27, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.R466Q variant (also known as c.1397G>A), located in coding exon 13 of the NF2 gene, results from a G to A substitution at nucleotide position 1397. The arginine at codon 466 is replaced by glutamine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.081

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Uncertain

0.040

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.48

T;.;.;.;.;.;.;.;.

Eigen

Uncertain

0.56

Eigen_PC

Uncertain

0.58

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.97

D;D;D;.;.;D;.;D;D

M_CAP

Benign

0.069

MetaRNN

Uncertain

0.58

D;D;D;D;D;D;D;D;D

MetaSVM

Uncertain

0.25

MutationAssessor

Uncertain

2.2

M;.;.;M;.;.;M;.;M

PhyloP100

8.1

PrimateAI

Uncertain

0.66

PROVEAN

Benign

-1.2

N;N;N;N;N;N;N;N;N

REVEL

Uncertain

0.55

Sift

Benign

0.24

T;T;T;T;T;T;T;T;T

Sift4G

Benign

0.41

T;T;T;T;T;T;T;T;T

Polyphen

0.99

D;D;P;D;D;D;D;D;D

Vest4

0.67

MVP

0.84

MPC

1.6

ClinPred

0.97

GERP RS

5.6

Varity_R

0.14

gMVP

0.56

Mutation Taster

=55/45

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over