dbSNP rs144477078: NF2:p.Ala4Ala (chr22-29604010-C-T) – ACMG Classification: Benign (-19 pts)

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2

The NM_000268.4(NF2):c.12C>T(p.Ala4Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00019 in 1,587,174 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0011 ( 1 hom., cov: 33)

Exomes 𝑓: 0.000096 ( 0 hom. )

Consequence

NF2
NM_000268.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:10

Conservation

PhyloP100: 2.43

Publications

3 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: Orphanet, ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics, 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: Benign. The variant received -19 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.29).

BP6

Variant 22-29604010-C-T is Benign according to our data. Variant chr22-29604010-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 237616.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=2.43 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00108 (164/152306) while in subpopulation AFR AF = 0.0038 (158/41586). AF 95% confidence interval is 0.00332. There are 1 homozygotes in GnomAd4. There are 82 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High AC in GnomAd4 at 164 AD,Unknown gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000268.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
NF2	NM_000268.4	MANE Select	c.12C>T	p.Ala4Ala	synonymous	Exon 1 of 16	NP_000259.1	P35240-1
NF2	NM_001407066.1		c.12C>T	p.Ala4Ala	synonymous	Exon 1 of 17	NP_001393995.1	P35240-3
NF2	NM_016418.5		c.12C>T	p.Ala4Ala	synonymous	Exon 1 of 17	NP_057502.2	P35240-3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
NF2	ENST00000338641.10	TSL:1 MANE Select	c.12C>T	p.Ala4Ala	synonymous	Exon 1 of 16	ENSP00000344666.5	P35240-1
NF2	ENST00000397789.3	TSL:1	c.12C>T	p.Ala4Ala	synonymous	Exon 1 of 17	ENSP00000380891.3	P35240-3
NF2	ENST00000403999.7	TSL:1	c.12C>T	p.Ala4Ala	synonymous	Exon 1 of 16	ENSP00000384797.3	P35240-3

Frequencies

GnomAD3 genomes

AF:

0.00108

AC:

165

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00383

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000241

AC:

AN:

203454

AF XY:

0.000190

show subpopulations

Gnomad AFR exome

AF:

0.00352

Gnomad AMR exome

AF:

0.000169

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000114

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000962

AC:

138

AN:

1434868

Hom.:

Cov.:

AF XY:

0.0000872

AC XY:

AN XY:

711360

show subpopulations

African (AFR)

AF:

0.00376

AC:

124

AN:

32998

American (AMR)

AF:

0.000149

AC:

AN:

40358

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25578

East Asian (EAS)

AF:

0.00

AC:

AN:

38574

South Asian (SAS)

AF:

0.00

AC:

AN:

82688

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50396

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5740

European-Non Finnish (NFE)

AF:

0.00000182

AC:

AN:

1099110

Other (OTH)

AF:

0.000101

AC:

AN:

59426

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.469

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

AF:

0.00108

AC:

164

AN:

152306

Hom.:

Cov.:

AF XY:

0.00110

AC XY:

AN XY:

74476

show subpopulations

African (AFR)

AF:

0.00380

AC:

158

AN:

41586

American (AMR)

AF:

0.000327

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5146

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68026

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000486

Hom.:

Bravo

AF:

0.00122

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Neurofibromatosis, type 2 (3)

not specified (3)

Hereditary cancer-predisposing syndrome (2)

not provided (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.29

CADD

Benign

(source)

DANN

Uncertain

0.98

PhyloP100

2.4

PromoterAI

-0.053

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=88/12

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over