rs199890164

Positions:

chr2-151627788-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001164507.2(NEB):c.9878G>C(p.Gly3293Ala) variant causes a missense change. The variant allele was found at a frequency of 0.0000143 in 1,613,776 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

NEB
NM_001164507.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 6.04

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NEB	NM_001164507.2 linkuse as main transcript	c.9878G>C	p.Gly3293Ala	missense_variant	69/182	ENST00000427231.7	NP_001157979.2
NEB	NM_001164508.2 linkuse as main transcript	c.9878G>C	p.Gly3293Ala	missense_variant	69/182	ENST00000397345.8	NP_001157980.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NEB	ENST00000397345.8 linkuse as main transcript	c.9878G>C	p.Gly3293Ala	missense_variant	69/182	5	NM_001164508.2	ENSP00000380505	P5	P20929-2
NEB	ENST00000427231.7 linkuse as main transcript	c.9878G>C	p.Gly3293Ala	missense_variant	69/182	5	NM_001164507.2	ENSP00000416578	A2	P20929-3
NEB	ENST00000409198.5 linkuse as main transcript	c.9149G>C	p.Gly3050Ala	missense_variant	66/150	5		ENSP00000386259		P20929-4

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152088

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000266

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

GnomAD3 exomes

AF:

0.0000241

AC:

AN:

249192

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135180

show subpopulations

Gnomad AFR exome

AF:

0.000323

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

0.00000821

AC:

AN:

1461688

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727130

show subpopulations

Gnomad4 AFR exome

AF:

0.000269

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000723

AC:

AN:

152088

Hom.:

Cov.:

AF XY:

0.0000539

AC XY:

AN XY:

74280

show subpopulations

Gnomad4 AFR

AF:

0.000266

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000503

Hom.:

Bravo

AF:

0.000128

ESP6500AA

AF:

0.000791

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000497

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Nemaline myopathy 2

Uncertain:2

Uncertain significance, no assertion criteria provided	clinical testing	Natera, Inc.	Nov 11, 2019	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Aug 08, 2022	This sequence change replaces glycine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 3293 of the NEB protein (p.Gly3293Ala). This variant is present in population databases (rs199890164, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with NEB-related conditions. ClinVar contains an entry for this variant (Variation ID: 577076). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Not Available"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 20, 2023

The c.9149G>C (p.G3050A) alteration is located in exon 66 (coding exon 64) of the NEB gene. This alteration results from a G to C substitution at nucleotide position 9149, causing the glycine (G) at amino acid position 3050 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.62

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.16

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.19

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

Eigen

Pathogenic

0.92

Eigen_PC

Pathogenic

0.88

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.86

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

M_CAP

Benign

0.027

MetaRNN

Uncertain

0.70

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

MetaSVM

Benign

-0.97

MutationAssessor

Pathogenic

3.1

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

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.61

PROVEAN

Uncertain

-2.4

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

REVEL

Uncertain

0.39

Sift

Benign

0.20

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

Sift4G

Pathogenic

0.0

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

Polyphen

1.0

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

Vest4

0.77

MVP

0.47

MPC

0.35

ClinPred

0.87

GERP RS

5.5

Varity_R

0.28

gMVP

0.45

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over