rs200758495

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBP7

The NM_001164507.2(NEB):​c.1569C>T​(p.Asp523Asp) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000106 in 1,609,996 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 0.00020 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000097 ( 0 hom. )

Consequence

NEB
NM_001164507.2 splice_region, synonymous

Scores

2
Splicing: ADA: 0.001049
2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.82

Publications

4 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.36).
BP7
Synonymous conserved (PhyloP=1.83 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
NEBNM_001164507.2 linkc.1569C>T p.Asp523Asp splice_region_variant, synonymous_variant Exon 17 of 182 ENST00000427231.7 NP_001157979.2
NEBNM_001164508.2 linkc.1569C>T p.Asp523Asp splice_region_variant, synonymous_variant Exon 17 of 182 ENST00000397345.8 NP_001157980.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
NEBENST00000397345.8 linkc.1569C>T p.Asp523Asp splice_region_variant, synonymous_variant Exon 17 of 182 5 NM_001164508.2 ENSP00000380505.3
NEBENST00000427231.7 linkc.1569C>T p.Asp523Asp splice_region_variant, synonymous_variant Exon 17 of 182 5 NM_001164507.2 ENSP00000416578.2
NEBENST00000489048.1 linkn.468C>T splice_region_variant, non_coding_transcript_exon_variant Exon 5 of 12 1
NEBENST00000409198.5 linkc.1569C>T p.Asp523Asp splice_region_variant, synonymous_variant Exon 17 of 150 5 ENSP00000386259.1

Frequencies

GnomAD3 genomes
AF:
0.000197
AC:
30
AN:
152166
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.000386
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000131
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00192
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000197
AC:
49
AN:
249134
AF XY:
0.000222
show subpopulations
Gnomad AFR exome
AF:
0.000581
Gnomad AMR exome
AF:
0.000116
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00134
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000708
Gnomad OTH exome
AF:
0.000165
GnomAD4 exome
AF:
0.0000967
AC:
141
AN:
1457712
Hom.:
0
Cov.:
30
AF XY:
0.0000869
AC XY:
63
AN XY:
725340
show subpopulations
African (AFR)
AF:
0.000210
AC:
7
AN:
33412
American (AMR)
AF:
0.000134
AC:
6
AN:
44710
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26114
East Asian (EAS)
AF:
0.000605
AC:
24
AN:
39654
South Asian (SAS)
AF:
0.0000464
AC:
4
AN:
86150
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53382
Middle Eastern (MID)
AF:
0.000174
AC:
1
AN:
5760
European-Non Finnish (NFE)
AF:
0.0000596
AC:
66
AN:
1108266
Other (OTH)
AF:
0.000548
AC:
33
AN:
60264
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.452
Heterozygous variant carriers
0
7
14
21
28
35
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
10
20
30
40
50
<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:
0.000197
AC:
30
AN:
152284
Hom.:
0
Cov.:
33
AF XY:
0.000175
AC XY:
13
AN XY:
74472
show subpopulations
African (AFR)
AF:
0.000385
AC:
16
AN:
41552
American (AMR)
AF:
0.000131
AC:
2
AN:
15304
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00193
AC:
10
AN:
5192
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4826
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10604
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000294
AC:
2
AN:
68020
Other (OTH)
AF:
0.00
AC:
0
AN:
2110
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
2
4
5
7
9
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.000165
Hom.:
0
Bravo
AF:
0.000181
Asia WGS
AF:
0.00144
AC:
5
AN:
3478
EpiCase
AF:
0.00
EpiControl
AF:
0.000119

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Nemaline myopathy 2 Uncertain:1
Oct 24, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change affects codon 523 of the NEB mRNA. It is a 'silent' change, meaning that it does not change the encoded amino acid sequence of the NEB protein. It affects a nucleotide within the consensus splice site. This variant is present in population databases (rs200758495, gnomAD 0.1%). 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: 534081). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant is not likely to affect RNA splicing. 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 v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.36
CADD
Benign
11
DANN
Benign
0.82
PhyloP100
1.8
Mutation Taster
=62/38
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.0010
dbscSNV1_RF
Benign
0.11
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

Other links and lift over

dbSNP: rs200758495; hg19: chr2-152553151; COSMIC: COSV50809969; API