Genetic Variant NEBL:c.258+1G>A (chr10-20889844-C-T) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PVS1_ModerateBP6BS2

The NM_006393.3(NEBL):c.258+1G>A variant causes a splice donor, intron change. The variant allele was found at a frequency of 0.0000245 in 1,589,326 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000097 ( 0 hom. )

Consequence

NEBL
NM_006393.3 splice_donor, intron

Scores

Splicing: ADA: 1.000

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 5.68

Publications

1 publications found

Variant links:

Genes affected

NEBL (HGNC:16932): (nebulette) This gene encodes a nebulin like protein that is abundantly expressed in cardiac muscle. The encoded protein binds actin and interacts with thin filaments and Z-line associated proteins in striated muscle. This protein may be involved in cardiac myofibril assembly. A shorter isoform of this protein termed LIM nebulette is expressed in non-muscle cells and may function as a component of focal adhesion complexes. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Mar 2010]

NEBL Gene-Disease associations (from GenCC):

dilated cardiomyopathy
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

NEBL links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.03448276 fraction of the gene. Cryptic splice site detected, with MaxEntScore 7.2, offset of 5, new splice context is: aagGTatca. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in inframe change.

BP6

Variant 10-20889844-C-T is Benign according to our data. Variant chr10-20889844-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 229045.

BS2

High AC in GnomAd4 at 25 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006393.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
NEBL	NM_006393.3	MANE Select	c.258+1G>A	splice_donor intron	N/A	NP_006384.1
NEBL	NM_001377322.1		c.357+71828G>A	intron	N/A	NP_001364251.1
NEBL	NM_213569.2		c.357+71828G>A	intron	N/A	NP_998734.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
NEBL	ENST00000377122.9	TSL:1 MANE Select	c.258+1G>A	splice_donor intron	N/A	ENSP00000366326.4
NEBL	ENST00000417816.2	TSL:1	c.357+71828G>A	intron	N/A	ENSP00000393896.2
NEBL	ENST00000863069.1		c.258+1G>A	splice_donor intron	N/A	ENSP00000533128.1

Frequencies

GnomAD3 genomes

AF:

0.000164

AC:

AN:

152124

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000603

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

GnomAD2 exomes

AF:

0.0000358

AC:

AN:

251292

AF XY:

0.0000221

show subpopulations

Gnomad AFR exome

AF:

0.000554

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000974

AC:

AN:

1437084

Hom.:

Cov.:

AF XY:

0.0000126

AC XY:

AN XY:

716440

show subpopulations

African (AFR)

AF:

0.000425

AC:

AN:

32926

American (AMR)

AF:

0.00

AC:

AN:

44686

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25978

East Asian (EAS)

AF:

0.00

AC:

AN:

39522

South Asian (SAS)

AF:

0.00

AC:

AN:

85728

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53396

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5710

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1089538

Other (OTH)

AF:

0.00

AC:

AN:

59600

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.439

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:

0.000164

AC:

AN:

152242

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74432

show subpopulations

African (AFR)

AF:

0.000602

AC:

AN:

41554

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10596

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68022

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

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:

0.0000836

Hom.:

Bravo

AF:

0.000147

ESP6500AA

AF:

0.00113

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000577

AC:

ClinVar

ClinVar submissions as Germline

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (2)

Primary dilated cardiomyopathy (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.22

BayesDel_noAF

Pathogenic

0.43

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

Eigen

Pathogenic

1.2

Eigen_PC

Pathogenic

1.1

FATHMM_MKL

Uncertain

0.95

PhyloP100

5.7

GERP RS

6.2

Mutation Taster

=0/100

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.94

SpliceAI score (max)

0.13

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over