2-151485494-CCT-C

Position:

• chr2-151485494-CCT-C

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP6_Moderate BA1

The NM_001164507.2(NEB):​c.*264_*265del variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0145 in 307,388 control chromosomes in the GnomAD database, including 199 homozygotes. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.025 (178 hom., cov: 32)
  • Exomes 𝑓: 0.0040 (21 hom.)
• Consequence: NEB NM_001164507.2 3_prime_UTR
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.257

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]

RIF1 (HGNC:23207): (replication timing regulatory factor 1) This gene encodes a protein that shares homology with the yeast teleomere binding protein, Rap1 interacting factor 1. This protein localizes to aberrant telomeres may be involved in DNA repair. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Apr 2010]

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP6: Variant 2-151485494-CCT-C is Benign according to our data. Variant chr2-151485494-CCT-C is described in ClinVar as [Likely_benign]. Clinvar id is 331397.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0856 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NEB	NM_001164507.2	c.*264_*265del		3_prime_UTR_variant	182/182	ENST00000427231.7
NEB	NM_001164508.2	c.*264_*265del		3_prime_UTR_variant	182/182	ENST00000397345.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NEB	ENST00000397345.8	c.*264_*265del		3_prime_UTR_variant	182/182	5	NM_001164508.2	P5
NEB	ENST00000427231.7	c.*264_*265del		3_prime_UTR_variant	182/182	5	NM_001164507.2	A2

Frequencies

GnomAD3 genomes AF: 0.0253 AC: 3856 AN: 152126 Hom.: 179 Cov.: 32

Gnomad AFR AF: 0.0883

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00877

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.0222

Gnomad NFE AF: 0.000265

Gnomad OTH AF: 0.0196

GnomAD4 exome AF: 0.00395 AC: 613 AN: 155144 Hom.: 21 AF XY: 0.00339 AC XY: 265 AN XY: 78180

Gnomad4 AFR exome AF: 0.0870

Gnomad4 AMR exome AF: 0.00634

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000179

Gnomad4 OTH exome AF: 0.00814

GnomAD4 genome AF: 0.0253 AC: 3855 AN: 152244 Hom.: 178 Cov.: 32 AF XY: 0.0241 AC XY: 1794 AN XY: 74432

Gnomad4 AFR AF: 0.0880

Gnomad4 AMR AF: 0.00876

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000265

Gnomad4 OTH AF: 0.0194

Alfa AF: 0.0152 Hom.: 15

Bravo AF: 0.0283

Asia WGS AF: 0.00549 AC: 20 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Nemaline Myopathy, Recessive Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Computational scores

Source: dbNSFP v4.3

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: rs59509952; hg19: chr2-152342008;