NM_001164507.2:c.7123T>C

Variant names:

• chr2-151650678-A-G
• rs373895191
• NM_001164507.2:c.7123T>C

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_Strong BP6 BP7

The NM_001164507.2(NEB):​c.7123T>C​(p.Leu2375Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000477 in 1,613,300 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). The gene NEB is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000051 (0 hom.)
• Consequence: NEB NM_001164507.2 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:1
• Conservation: PhyloP100: 0.724
• Publications: 1 publications found

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: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), Myriad Women’s Health, ClinGen
• autosomal dominant nebulin-related myopathy

  Inheritance: AD Classification: MODERATE Submitted by: ClinGen
• 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

ACMG classification

Specifications for NEB are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Likely_benign. The variant received -6 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP6: Variant 2-151650678-A-G is Benign according to our data. Variant chr2-151650678-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 465631.
• BP7: Synonymous conserved (PhyloP=0.724 with no splicing effect.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NEB	NM_001164507.2	MANE Plus Clinical	c.7123T>C	p.Leu2375Leu	synonymous	Exon 53 of 182	NP_001157979.2	P20929-3
	NEB	NM_001164508.2	MANE Select	c.7123T>C	p.Leu2375Leu	synonymous	Exon 53 of 182	NP_001157980.2	P20929-2
	NEB	NM_001271208.2		c.7123T>C	p.Leu2375Leu	synonymous	Exon 53 of 183	NP_001258137.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NEB	ENST00000397345.8	TSL:5 MANE Select	c.7123T>C	p.Leu2375Leu	synonymous	Exon 53 of 182	ENSP00000380505.3	P20929-2
	NEB	ENST00000427231.7	TSL:5 MANE Plus Clinical	c.7123T>C	p.Leu2375Leu	synonymous	Exon 53 of 182	ENSP00000416578.2	P20929-3
	NEB	ENST00000409198.5	TSL:5	c.7123T>C	p.Leu2375Leu	synonymous	Exon 53 of 150	ENSP00000386259.1	P20929-4

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 151794 Hom.: 0 Cov.: 32

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: 0.0000294

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000113 AC: 28 AN: 248718 AF XY: 0.0000667

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: 0.000249

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000513 AC: 75 AN: 1461506 Hom.: 0 Cov.: 31 AF XY: 0.0000358 AC XY: 26 AN XY: 727022

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86222

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53394

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.0000657 AC: 73 AN: 1111744

Other (OTH) AF: 0.0000331 AC: 2 AN: 60360

GnomAD4 genome AF: 0.0000132 AC: 2 AN: 151794 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74110

African (AFR) AF: 0.00 AC: 0 AN: 41326

American (AMR) AF: 0.00 AC: 0 AN: 15234

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5162

South Asian (SAS) AF: 0.00 AC: 0 AN: 4812

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10558

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 67924

Other (OTH) AF: 0.00 AC: 0 AN: 2082

Alfa AF: 0.0000579 Hom.: 0

Bravo AF: 0.0000378

EpiCase AF: 0.00

EpiControl AF: 0.000119

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	-	1	Nemaline myopathy 2 (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	2.9
DANN	Benign	0.57
PhyloP100		0.72
Mutation Taster		=99/1	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs373895191; hg19: chr2-152507192; COSMIC: COSV104554519;