3-8733903-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BA1

The NM_033337.3(CAV3):c.27C>T(p.Leu9Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.112 in 1,610,152 control chromosomes in the GnomAD database, including 11,775 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.082 ( 683 hom., cov: 31)

Exomes 𝑓: 0.11 ( 11092 hom. )

Consequence

CAV3
NM_033337.3 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:14O:1

Conservation

PhyloP100: 0.0920

Variant links:

Genes affected

CAV3 (HGNC:1529): (caveolin 3) This gene encodes a caveolin family member, which functions as a component of the caveolae plasma membranes found in most cell types. Caveolin proteins are proposed to be scaffolding proteins for organizing and concentrating certain caveolin-interacting molecules. Mutations identified in this gene lead to interference with protein oligomerization or intra-cellular routing, disrupting caveolae formation and resulting in Limb-Girdle muscular dystrophy type-1C (LGMD-1C), hyperCKemia or rippling muscle disease (RMD). Alternative splicing has been identified for this locus, with inclusion or exclusion of a differentially spliced intron. In addition, transcripts utilize multiple polyA sites and contain two potential translation initiation sites. [provided by RefSeq, Jul 2008]

CAV3 links:

SSUH2 (HGNC:24809): (ssu-2 homolog) Involved in odontogenesis. Located in cytoplasm and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

SSUH2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -19 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.28).

BP6

Variant 3-8733903-C-T is Benign according to our data. Variant chr3-8733903-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 31716.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr3-8733903-C-T is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=0.092 with no splicing effect.

BA1

GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.125 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CAV3	NM_033337.3 link	c.27C>T	p.Leu9Leu	synonymous_variant	Exon 1 of 2	ENST00000343849.3	NP_203123.1	P56539
CAV3	NM_001234.5 link	c.27C>T	p.Leu9Leu	synonymous_variant	Exon 1 of 3		NP_001225.1	P56539

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CAV3	ENST00000343849.3 link	c.27C>T	p.Leu9Leu	synonymous_variant	Exon 1 of 2	1	NM_033337.3	ENSP00000341940.2		P56539

Frequencies

GnomAD3 genomes

AF:

0.0823

AC:

12501

AN:

151930

Hom.:

683

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0222

Gnomad AMI

AF:

0.0275

Gnomad AMR

AF:

0.0759

Gnomad ASJ

AF:

0.0637

Gnomad EAS

AF:

0.00232

Gnomad SAS

AF:

0.0264

Gnomad FIN

AF:

0.111

Gnomad MID

AF:

0.0541

Gnomad NFE

AF:

0.127

Gnomad OTH

AF:

0.0930

GnomAD3 exomes

AF:

0.0855

AC:

21481

AN:

251102

Hom.:

1276

AF XY:

0.0859

AC XY:

11653

AN XY:

135726

show subpopulations

Gnomad AFR exome

AF:

0.0213

Gnomad AMR exome

AF:

0.0535

Gnomad ASJ exome

AF:

0.0661

Gnomad EAS exome

AF:

0.00185

Gnomad SAS exome

AF:

0.0267

Gnomad FIN exome

AF:

0.114

Gnomad NFE exome

AF:

0.130

Gnomad OTH exome

AF:

0.0906

GnomAD4 exome

AF:

0.115

AC:

167363

AN:

1458104

Hom.:

11092

Cov.:

AF XY:

0.112

AC XY:

81473

AN XY:

725622

show subpopulations

Gnomad4 AFR exome

AF:

0.0185

Gnomad4 AMR exome

AF:

0.0560

Gnomad4 ASJ exome

AF:

0.0660

Gnomad4 EAS exome

AF:

0.00151

Gnomad4 SAS exome

AF:

0.0272

Gnomad4 FIN exome

AF:

0.114

Gnomad4 NFE exome

AF:

0.134

Gnomad4 OTH exome

AF:

0.0941

GnomAD4 genome

AF:

0.0822

AC:

12502

AN:

152048

Hom.:

683

Cov.:

AF XY:

0.0789

AC XY:

5861

AN XY:

74306

show subpopulations

Gnomad4 AFR

AF:

0.0221

Gnomad4 AMR

AF:

0.0759

Gnomad4 ASJ

AF:

0.0637

Gnomad4 EAS

AF:

0.00232

Gnomad4 SAS

AF:

0.0267

Gnomad4 FIN

AF:

0.111

Gnomad4 NFE

AF:

0.127

Gnomad4 OTH

AF:

0.0920

Alfa

AF:

0.114

Hom.:

1449

Bravo

AF:

0.0779

Asia WGS

AF:

0.0120

AC:

AN:

3478

EpiCase

AF:

0.124

EpiControl

AF:

0.122

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:14Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:7

Jul 29, 2013

Eurofins Ntd Llc (ga)

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Apr 20, 2012

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Leu9Leu in exon 1 of CAV3: This variant is not expected to have clinical signifi cance because it does not alter an amino acid residue and is not located within the splice consensus sequence. It has been identified in 12.6% (883/7020) of Eur opean American chromosomes from a broad population by the NHLBI Exome Sequencing Project (http://evs.gs.washington.edu/EVS/; rs1974763). -

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Apr 28, 2021

Athena Diagnostics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Genetic Services Laboratory, University of Chicago

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

Likely benign based on allele frequency in 1000 Genomes Project or ESP global frequency and its presence in a patient with a rare or unrelated disease phenotype. NOT Sanger confirmed. -

Clinical Genetics, Academic Medical Center

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not provided

Benign:2Other:1

Mar 03, 2015

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Apr 15, 2012

Leiden Muscular Dystrophy (CAV3)

Significance: not provided

Review Status: no classification provided

Collection Method: curation

- -

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Limb-Girdle Muscular Dystrophy, Dominant

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Caveolinopathy

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Congenital long QT syndrome

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Long QT syndrome

Benign:1

Feb 04, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cardiovascular phenotype

Benign:1

Jun 19, 2015

Ambry Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.28

CADD

Benign

DANN

Benign

0.90

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over