rs768390701

Positions:

• chr2-151561227-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4 BP6

The NM_001164507.2(NEB):​c.19082G>A​(p.Ser6361Asn) variant causes a missense change. The variant allele was found at a frequency of 0.0000131 in 1,455,820 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: not found (cov: 32)
  • Exomes 𝑓: 0.000013 (0 hom.)
• Consequence: NEB NM_001164507.2 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2 B:1
• Conservation: PhyloP100: 6.91

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.26835907).
• BP6: Variant 2-151561227-C-T is Benign according to our data. Variant chr2-151561227-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 571786.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NEB	NM_001164507.2	c.19082G>A	p.Ser6361Asn	missense_variant	122/182	ENST00000427231.7	NP_001157979.2
NEB	NM_001164508.2	c.19082G>A	p.Ser6361Asn	missense_variant	122/182	ENST00000397345.8	NP_001157980.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NEB	ENST00000397345.8	c.19082G>A	p.Ser6361Asn	missense_variant	122/182	5	NM_001164508.2	ENSP00000380505	P5
NEB	ENST00000427231.7	c.19082G>A	p.Ser6361Asn	missense_variant	122/182	5	NM_001164507.2	ENSP00000416578	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000291 AC: 7 AN: 240142 Hom.: 0 AF XY: 0.0000539 AC XY: 7 AN XY: 129922

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 SAS exome AF: 0.000238

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000131 AC: 19 AN: 1455820 Hom.: 0 Cov.: 31 AF XY: 0.0000180 AC XY: 13 AN XY: 723616

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000176

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000665

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ExAC AF: 0.0000166 AC: 2

Asia WGS AF: 0.00115 AC: 4 AN: 3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2 Benign:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Nemaline myopathy 2 Uncertain:1 Benign:1

Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Nov 02, 2023	- -
Uncertain significance, no assertion criteria provided	clinical testing	Natera, Inc.	Nov 11, 2019	- -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Revvity Omics, Revvity

Jun 11, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.40
BayesDel_addAF	Benign	-0.29	T
BayesDel_noAF	Benign	-0.37
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.032	.;.;T;.;T;T;.;.
Eigen	Uncertain	0.67
Eigen_PC	Pathogenic	0.68
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.82	T;T;T;T;T;T;.;.
M_CAP	Benign	0.024	T
MetaRNN	Benign	0.27	T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	1.8	L;.;.;.;L;.;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.63	T
PROVEAN	Benign	-1.3	N;N;.;N;N;N;.;.
REVEL	Benign	0.15
Sift	Benign	0.52	T;T;.;T;T;T;.;.
Sift4G	Uncertain	0.018	D;D;D;D;D;T;D;D
Polyphen		0.99	.;.;.;.;D;.;.;.
Vest4		0.51
MutPred		0.39		Loss of glycosylation at S4660 (P = 0.0102);.;.;.;Loss of glycosylation at S4660 (P = 0.0102);.;.;.;
MVP		0.56
MPC		0.32
ClinPred		0.71	D
GERP RS		5.5
Varity_R		0.35
gMVP		0.46

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

Other links and lift over

dbSNP: rs768390701; hg19: chr2-152417741; COSMIC: COSV51357710;