rs1253831275

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_001164507.2(NEB):c.13059+4C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000034 ( 0 hom., cov: 4)

Exomes 𝑓: 0.000025 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

NEB
NM_001164507.2 splice_region, intron

Scores

Splicing: ADA: 0.009948

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: -1.28

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 -4 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.53).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001164507.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
NEB	NM_001164507.2	MANE Plus Clinical	c.13059+4C>T	splice_region intron	N/A	NP_001157979.2
NEB	NM_001164508.2	MANE Select	c.13059+4C>T	splice_region intron	N/A	NP_001157980.2
NEB	NM_001271208.2		c.13059+4C>T	splice_region intron	N/A	NP_001258137.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
NEB	ENST00000397345.8	TSL:5 MANE Select	c.13059+4C>T	splice_region intron	N/A	ENSP00000380505.3
NEB	ENST00000427231.7	TSL:5 MANE Plus Clinical	c.13059+4C>T	splice_region intron	N/A	ENSP00000416578.2
NEB	ENST00000409198.5	TSL:5	c.11601+5253C>T	intron	N/A	ENSP00000386259.1

Frequencies

GnomAD3 genomes

AF:

0.0000344

AC:

AN:

29108

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000618

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000507

AC:

AN:

39486

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000626

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000245

AC:

AN:

285508

Hom.:

Cov.:

AF XY:

0.00000671

AC XY:

AN XY:

149006

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

7324

American (AMR)

AF:

0.00

AC:

AN:

12210

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

8386

East Asian (EAS)

AF:

0.000105

AC:

AN:

19008

South Asian (SAS)

AF:

0.0000337

AC:

AN:

29684

European-Finnish (FIN)

AF:

0.00

AC:

AN:

16284

Middle Eastern (MID)

AF:

0.00

AC:

AN:

1160

European-Non Finnish (NFE)

AF:

0.0000229

AC:

AN:

174976

Other (OTH)

AF:

0.00

AC:

AN:

16476

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.00000228747), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.311

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

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000344

AC:

AN:

29108

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

12602

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

4350

American (AMR)

AF:

0.00

AC:

AN:

2920

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

702

East Asian (EAS)

AF:

0.00

AC:

AN:

1812

South Asian (SAS)

AF:

0.00

AC:

AN:

758

European-Finnish (FIN)

AF:

0.00

AC:

AN:

1624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

166

European-Non Finnish (NFE)

AF:

0.0000618

AC:

AN:

16178

Other (OTH)

AF:

0.00

AC:

AN:

390

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Nemaline myopathy 2

Uncertain:2

Nov 11, 2019

Natera, Inc.

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

Mar 18, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant occurs in a region of NEB (Exons 82-105) consisting of three highly homologous 8-exon repeat units (exons 82-89, exons 90-97, exons 98-105). Sequence variants in this region can be detected, but this assay cannot determine which of the three repeat units is affected, and zygosity is often ambiguous. All variants in this region are reported relative to the exon 82-89 repeat. This sequence change falls in intron 85 of the NEB gene. It does not directly change the encoded amino acid sequence of the NEB protein. It affects a nucleotide within the consensus splice site. The frequency data for this variant in the population databases (gnomAD) is considered unreliable due to the presence of homologous sequence, such as pseudogenes or paralogs, in the genome. 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: 465471). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.53

CADD

Benign

3.7

(source)

DANN

Benign

0.47

PhyloP100

-1.3

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0099

dbscSNV1_RF

Benign

0.12

SpliceAI score (max)

0.070

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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over