rs776452710

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM1PM2PP3_ModeratePP5

The NM_001130987.2(DYSF):c.5210C>G(p.Pro1737Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,694 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P1737S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

DYSF
NM_001130987.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:1

Conservation

PhyloP100: 7.68

Publications

0 publications found

Variant links:

Genes affected

DYSF (HGNC:3097): (dysferlin) The protein encoded by this gene belongs to the ferlin family and is a skeletal muscle protein found associated with the sarcolemma. It is involved in muscle contraction and contains C2 domains that play a role in calcium-mediated membrane fusion events, suggesting that it may be involved in membrane regeneration and repair. In addition, the protein encoded by this gene binds caveolin-3, a skeletal muscle membrane protein which is important in the formation of caveolae. Specific mutations in this gene have been shown to cause autosomal recessive limb girdle muscular dystrophy type 2B (LGMD2B) as well as Miyoshi myopathy. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2008]

DYSF Gene-Disease associations (from GenCC):

autosomal recessive limb-girdle muscular dystrophy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
neuromuscular disease caused by qualitative or quantitative defects of dysferlin
Inheritance: AR Classification: DEFINITIVE Submitted by: Myriad Women’s Health
autosomal recessive limb-girdle muscular dystrophy type 2B
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
distal myopathy with anterior tibial onset
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
congenital myopathy, Paradas type
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Miyoshi myopathy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

DYSF links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 4 benign, 5 uncertain in NM_001130987.2

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.929

PP5

Variant 2-71665197-C-G is Pathogenic according to our data. Variant chr2-71665197-C-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 567124.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DYSF	NM_001130987.2 link	c.5210C>G	p.Pro1737Arg	missense_variant	Exon 47 of 56	ENST00000410020.8	NP_001124459.1	O75923-13
DYSF	NM_003494.4 link	c.5093C>G	p.Pro1698Arg	missense_variant	Exon 46 of 55	ENST00000258104.8	NP_003485.1	O75923-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DYSF	ENST00000410020.8 link	c.5210C>G	p.Pro1737Arg	missense_variant	Exon 47 of 56	1	NM_001130987.2	ENSP00000386881.3		O75923-13
DYSF	ENST00000258104.8 link	c.5093C>G	p.Pro1698Arg	missense_variant	Exon 46 of 55	1	NM_003494.4	ENSP00000258104.3		O75923-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251222

AF XY:

0.00000736

show subpopulations

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461694

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727168

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53256

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5746

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112008

Other (OTH)

AF:

0.00

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Neuromuscular disease caused by qualitative or quantitative defects of dysferlin

Pathogenic:1

Jun 03, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces proline, which is neutral and non-polar, with arginine, which is basic and polar, at codon 1698 of the DYSF protein (p.Pro1698Arg). This variant is present in population databases (rs776452710, gnomAD 0.003%). This missense change has been observed in individual(s) with limb-girdle muscular dystrophy (LGMD) (Invitae). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 567124). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt DYSF protein function with a positive predictive value of 95%. This variant disrupts the p.Pro1698 amino acid residue in DYSF. Other variant(s) that disrupt this residue have been observed in individuals with DYSF-related conditions (PMID: 33927379, 36580222; Invitae), which suggests that this may be a clinically significant amino acid residue. For these reasons, this variant has been classified as Pathogenic. -

not provided

Uncertain:1

Nov 13, 2019

Revvity Omics, Revvity

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.42

BayesDel_noAF

Pathogenic

0.46

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.91

.;.;.;.;D;.;.;.;.;.;.

Eigen

Pathogenic

0.97

Eigen_PC

Pathogenic

0.90

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

1.0

D;D;D;D;D;D;D;D;D;D;D

M_CAP

Pathogenic

0.53

MetaRNN

Pathogenic

0.93

D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

3.4

.;.;.;.;M;.;.;.;.;.;.

PhyloP100

7.7

PrimateAI

Uncertain

0.68

PROVEAN

Pathogenic

-7.9

D;D;D;D;D;D;D;D;D;D;D

REVEL

Pathogenic

0.91

Sift

Pathogenic

0.0

D;D;D;D;D;D;D;D;D;D;D

Sift4G

Pathogenic

0.0010

D;D;D;D;D;D;D;D;D;D;D

Polyphen

1.0

D;D;D;D;D;D;D;D;D;D;D

Vest4

0.95

MutPred

0.64

.;.;.;.;Gain of MoRF binding (P = 0.0064);.;.;.;.;.;.;

MVP

0.97

MPC

0.66

ClinPred

1.0

GERP RS

5.4

Varity_R

0.85

gMVP

0.87

Mutation Taster

=4/96

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over