2-151527483-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 1P and 9B. PP3BP6BS1BS2

The NM_001164508.2(NEB):c.21838G>A(p.Asp7280Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000189 in 1,610,212 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00027 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00018 ( 0 hom. )

Consequence

NEB
NM_001164508.2 missense

Scores

Splicing: ADA: 0.9573

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:3

Conservation

PhyloP100: 7.69

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:

RIF1 (HGNC:23207): (replication timing regulatory factor 1) This gene encodes a protein that shares homology with the yeast teleomere binding protein, Rap1 interacting factor 1. This protein localizes to aberrant telomeres may be involved in DNA repair. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Apr 2010]

RIF1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

PP3

Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

BP6

Variant 2-151527483-C-T is Benign according to our data. Variant chr2-151527483-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 465556.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=2}.

BS1

Variant frequency is greater than expected in population amr. gnomad4_exome allele frequency = 0.00018 (263/1457912) while in subpopulation AMR AF= 0.0056 (249/44428). AF 95% confidence interval is 0.00503. There are 0 homozygotes in gnomad4_exome. There are 100 alleles in male gnomad4_exome subpopulation. Median coverage is 30. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NEB	NM_001164507.2 link	c.21838G>A	p.Asp7280Asn	missense_variant	Exon 147 of 182	ENST00000427231.7	NP_001157979.2
NEB	NM_001164508.2 link	c.21838G>A	p.Asp7280Asn	missense_variant	Exon 147 of 182	ENST00000397345.8	NP_001157980.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NEB	ENST00000397345.8 link	c.21838G>A	p.Asp7280Asn	missense_variant	Exon 147 of 182	5	NM_001164508.2	ENSP00000380505.3		P20929-2
NEB	ENST00000427231.7 link	c.21838G>A	p.Asp7280Asn	missense_variant	Exon 147 of 182	5	NM_001164507.2	ENSP00000416578.2		P20929-3

Frequencies

GnomAD3 genomes

AF:

0.000269

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00262

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:

0.000940

AC:

231

AN:

245686

Hom.:

AF XY:

0.000616

AC XY:

AN XY:

133176

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00666

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:

0.000671

GnomAD4 exome

AF:

0.000180

AC:

263

AN:

1457912

Hom.:

Cov.:

AF XY:

0.000138

AC XY:

100

AN XY:

725158

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.00560

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:

0.00000541

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.000269

AC:

AN:

152300

Hom.:

Cov.:

AF XY:

0.000376

AC XY:

AN XY:

74474

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00262

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:

0.000136

Hom.:

Bravo

AF:

0.000570

ExAC

AF:

0.000720

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Jun 25, 2020

Revvity Omics, Revvity

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 05, 2019

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Inborn genetic diseases

Uncertain:1

May 05, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.16735G>A (p.D5579N) alteration is located in exon 120 (coding exon 118) of the NEB gene. This alteration results from a G to A substitution at nucleotide position 16735, causing the aspartic acid (D) at amino acid position 5579 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

NEB-related disorder

Benign:1

Oct 13, 2020

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). -

Nemaline myopathy 2

Benign:1

Jan 24, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.39

CADD

Uncertain

DANN

Benign

0.97

DEOGEN2

Benign

0.043

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

Eigen

Pathogenic

0.73

Eigen_PC

Pathogenic

0.70

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

D;D;T;D;D;D;.;.

M_CAP

Benign

0.051

MetaRNN

Benign

0.011

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

MetaSVM

Benign

-0.86

MutationAssessor

Uncertain

2.5

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

PrimateAI

Uncertain

0.74

PROVEAN

Benign

-1.9

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

REVEL

Uncertain

0.34

Sift

Benign

0.080

T;D;.;D;T;T;.;.

Sift4G

Uncertain

0.017

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

Polyphen

1.0

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

Vest4

0.61

MVP

0.60

MPC

0.34

ClinPred

0.096

GERP RS

6.2

Varity_R

0.15

gMVP

0.64

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.96

dbscSNV1_RF

Pathogenic

0.76

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