rs202234374

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_001164507.2(NEB):c.5696C>T(p.Thr1899Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000158 in 1,613,756 control chromosomes in the GnomAD database, including 1 homozygotes. 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T1899N) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00028 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 1 hom. )

Consequence

NEB
NM_001164507.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:3

Conservation

PhyloP100: 0.342

Publications

0 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, Labcorp Genetics (formerly Invitae), Myriad Women’s Health, G2P, Ambry Genetics
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

ACMG classification

Classification was made for transcript

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

BP4

Computational evidence support a benign effect (MetaRNN=0.012418866).

BP6

Variant 2-151663615-G-A is Benign according to our data. Variant chr2-151663615-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 285430.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NEB	NM_001164507.2 link	c.5696C>T	p.Thr1899Ile	missense_variant	Exon 45 of 182	ENST00000427231.7	NP_001157979.2
NEB	NM_001164508.2 link	c.5696C>T	p.Thr1899Ile	missense_variant	Exon 45 of 182	ENST00000397345.8	NP_001157980.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
NEB	ENST00000397345.8 link	c.5696C>T	p.Thr1899Ile	missense_variant	Exon 45 of 182	5	NM_001164508.2	ENSP00000380505.3
NEB	ENST00000427231.7 link	c.5696C>T	p.Thr1899Ile	missense_variant	Exon 45 of 182	5	NM_001164507.2	ENSP00000416578.2
NEB	ENST00000409198.5 link	c.5696C>T	p.Thr1899Ile	missense_variant	Exon 45 of 150	5		ENSP00000386259.1

Frequencies

GnomAD3 genomes

AF:

0.000283

AC:

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000579

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000786

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000771

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000478

AC:

119

AN:

248838

AF XY:

0.000341

show subpopulations

Gnomad AFR exome

AF:

0.000711

Gnomad AMR exome

AF:

0.00267

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000501

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000443

Gnomad OTH exome

AF:

0.000331

GnomAD4 exome

AF:

0.000145

AC:

212

AN:

1461472

Hom.:

Cov.:

AF XY:

0.000125

AC XY:

AN XY:

727022

show subpopulations

African (AFR)

AF:

0.000149

AC:

AN:

33464

American (AMR)

AF:

0.00217

AC:

AN:

44700

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00149

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53394

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000378

AC:

AN:

1111720

Other (OTH)

AF:

0.000149

AC:

AN:

60360

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

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:

0.000282

AC:

AN:

152284

Hom.:

Cov.:

AF XY:

0.000269

AC XY:

AN XY:

74460

show subpopulations

African (AFR)

AF:

0.000577

AC:

AN:

41568

American (AMR)

AF:

0.000785

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000772

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68012

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

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:

0.000247

Hom.:

Bravo

AF:

0.000363

ESP6500AA

AF:

0.000725

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000488

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Nemaline myopathy 2

Uncertain:2Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Jan 17, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 24, 2020

Natera, Inc.

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

not provided

Uncertain:2

Jan 26, 2016

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Nov 22, 2021

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

not specified

Uncertain:1Benign:1

Jul 02, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: NEB c.5696C>T (p.Thr1899Ile) results in a non-conservative amino acid change in the encoded protein sequence. Two of four in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00048 in 248838 control chromosomes, predominantly at a frequency of 0.0027 within the Latino subpopulation in the gnomAD database. This frequency is not significantly higher than estimated for a pathogenic variant in NEB causing Nemaline Myopathy 2 (0.00048 vs 0.0035), allowing no conclusion about variant significance. c.5696C>T has been reported in the literature in one individual affected with Congenital myasthenic syndrome with a genetic cause from other gene (Szelinger_2020). These report(s) do not provide unequivocal conclusions about association of the variant with Nemaline Myopathy 2. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication has been ascertained in the context of this evaluation (PMID: 32754643). ClinVar contains an entry for this variant (Variation ID: 285430). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Oct 06, 2017

Institute for Genomic Medicine (IGM) Clinical Laboratory, Nationwide Children's Hospital

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

BP1,BP4; This alteration is a missense alteration in a gene for which primarily truncating variants are known to cause disease, and is predicted to be tolerated by multiple functional prediction tools. -

Inborn genetic diseases

Uncertain:1

Apr 04, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.5696C>T (p.T1899I) alteration is located in exon 45 (coding exon 43) of the NEB gene. This alteration results from a C to T substitution at nucleotide position 5696, causing the threonine (T) at amino acid position 1899 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

NEB-related disorder

Benign:1

Mar 13, 2024

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.45

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.037

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

Eigen

Benign

-0.45

Eigen_PC

Benign

-0.28

FATHMM_MKL

Benign

0.41

LIST_S2

Benign

0.40

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

M_CAP

Benign

0.011

MetaRNN

Benign

0.012

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

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.81

L;L;.;L;L;L;L

PhyloP100

0.34

PrimateAI

Benign

0.40

PROVEAN

Benign

-2.3

N;D;.;D;N;.;.

REVEL

Benign

0.063

Sift

Benign

0.18

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

Sift4G

Benign

0.066

T;D;D;D;T;D;D

Polyphen

0.078

.;.;.;.;B;.;.

Vest4

0.46

MVP

0.28

MPC

0.065

ClinPred

0.034

GERP RS

4.7

Varity_R

0.12

gMVP

0.34

Mutation Taster

=90/10

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over