Genetic Variant NEB:p.Asn1198Ser (chr2-151677746-T-C) – ACMG Classification: Benign (-13 pts)

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_001164508.2(NEB):c.3593A>G(p.Asn1198Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00273 in 1,613,934 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). The gene NEB is included in the ClinGen Criteria Specification Registry.

Frequency

Genomes: 𝑓 0.0020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0028 ( 7 hom. )

Consequence

NEB
NM_001164508.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:10

Conservation

PhyloP100: -1.32

Publications

6 publications found

Variant links:

Genes affected

NEB (HGNC:7720): (nebulin) This gene encodes nebulin, a giant protein component of the cytoskeletal matrix that coexists with the thick and thin filaments within the sarcomeres of skeletal muscle. In most vertebrates, nebulin accounts for 3 to 4% of the total myofibrillar protein. The encoded protein contains approximately 30-amino acid long modules that can be classified into 7 types and other repeated modules. Protein isoform sizes vary from 600 to 800 kD due to alternative splicing that is tissue-, species-,and developmental stage-specific. Of the 183 exons in the nebulin gene, at least 43 are alternatively spliced, although exons 143 and 144 are not found in the same transcript. Of the several thousand transcript variants predicted for nebulin, the RefSeq Project has decided to create three representative RefSeq records. Mutations in this gene are associated with recessive nemaline myopathy. [provided by RefSeq, Sep 2009]

NEB Gene-Disease associations (from GenCC):

nemaline myopathy 2
Inheritance: AR, AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: ClinGen, Myriad Women's Health, Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
autosomal dominant nebulin-related myopathy
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
childhood-onset nemaline myopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
intermediate nemaline myopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
typical nemaline myopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
lethal multiple pterygium syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
severe congenital nemaline myopathy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

NEB links:

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript NM_001164508.2, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

ACMG classification

Specifications for NEB are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.005604297).

BP6

Variant 2-151677746-T-C is Benign according to our data. Variant chr2-151677746-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 211587.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00203 (309/152292) while in subpopulation AMR AF = 0.00321 (49/15286). AF 95% confidence interval is 0.00249. There are 0 homozygotes in GnomAd4. There are 137 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 7 AD,AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001164508.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
NEB	NM_001164507.2	MANE Plus Clinical	c.3593A>G	p.Asn1198Ser	missense	Exon 34 of 182	NP_001157979.2	P20929-3
NEB	NM_001164508.2	MANE Select	c.3593A>G	p.Asn1198Ser	missense	Exon 34 of 182	NP_001157980.2	P20929-2
NEB	NM_001271208.2		c.3593A>G	p.Asn1198Ser	missense	Exon 34 of 183	NP_001258137.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
NEB	ENST00000397345.8	TSL:5 MANE Select	c.3593A>G	p.Asn1198Ser	missense	Exon 34 of 182	ENSP00000380505.3	P20929-2
NEB	ENST00000427231.7	TSL:5 MANE Plus Clinical	c.3593A>G	p.Asn1198Ser	missense	Exon 34 of 182	ENSP00000416578.2	P20929-3
NEB	ENST00000409198.5	TSL:5	c.3593A>G	p.Asn1198Ser	missense	Exon 34 of 150	ENSP00000386259.1	P20929-4

Frequencies

GnomAD3 genomes

AF:

0.00202

AC:

308

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000748

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00321

Gnomad ASJ

AF:

0.00835

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00124

Gnomad FIN

AF:

0.000847

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.00259

Gnomad OTH

AF:

0.00287

GnomAD2 exomes

AF:

0.00233

AC:

581

AN:

249234

AF XY:

0.00244

show subpopulations

Gnomad AFR exome

AF:

0.000710

Gnomad AMR exome

AF:

0.00220

Gnomad ASJ exome

AF:

0.00914

Gnomad EAS exome

AF:

0.0000556

Gnomad FIN exome

AF:

0.000418

Gnomad NFE exome

AF:

0.00289

Gnomad OTH exome

AF:

0.00297

GnomAD4 exome

AF:

0.00281

AC:

4103

AN:

1461642

Hom.:

Cov.:

AF XY:

0.00276

AC XY:

2007

AN XY:

727102

show subpopulations

African (AFR)

AF:

0.000359

AC:

AN:

33448

American (AMR)

AF:

0.00262

AC:

117

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00804

AC:

210

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00133

AC:

115

AN:

86254

European-Finnish (FIN)

AF:

0.000356

AC:

AN:

53402

Middle Eastern (MID)

AF:

0.00243

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00309

AC:

3436

AN:

1111848

Other (OTH)

AF:

0.00298

AC:

180

AN:

60370

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

223

447

670

894

1117

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

124

248

372

496

620

<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:

0.00203

AC:

309

AN:

152292

Hom.:

Cov.:

AF XY:

0.00184

AC XY:

137

AN XY:

74480

show subpopulations

African (AFR)

AF:

0.000746

AC:

AN:

41572

American (AMR)

AF:

0.00321

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00835

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00125

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.000847

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00259

AC:

176

AN:

68018

Other (OTH)

AF:

0.00332

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

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:

0.00304

Hom.:

Bravo

AF:

0.00249

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.00414

EpiControl

AF:

0.00362

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (6)

Nemaline myopathy 2 (3)

not specified (2)

Inborn genetic diseases (1)

NEB-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.065

BayesDel_addAF

Benign

-0.68

BayesDel_noAF

Benign

-0.75

CADD

Benign

8.6

(source)

DANN

Benign

0.92

DEOGEN2

Benign

0.020

Eigen

Benign

-0.88

Eigen_PC

Benign

-0.79

FATHMM_MKL

Benign

0.22

LIST_S2

Benign

0.59

M_CAP

Benign

0.0062

MetaRNN

Benign

0.0056

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.98

PhyloP100

-1.3

PrimateAI

Benign

0.26

PROVEAN

Benign

-0.68

REVEL

Benign

0.044

Sift

Benign

0.27

Sift4G

Benign

0.22

Varity_R

0.037

gMVP

0.34

Mutation Taster

=100/0

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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NEB p.Asn1198Ser

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