chr2-71513823-C-G

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_001130987.2(DYSF):c.661C>G(p.Leu221Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00445 in 1,614,184 control chromosomes in the GnomAD database, including 208 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. L221L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.021 ( 103 hom., cov: 32)

Exomes 𝑓: 0.0027 ( 105 hom. )

Consequence

DYSF
NM_001130987.2 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:15

Conservation

PhyloP100: 1.34

Publications

12 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: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.001826644).

BP6

Variant 2-71513823-C-G is Benign according to our data. Variant chr2-71513823-C-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 94343.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0665 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DYSF	NM_001130987.2 link	c.661C>G	p.Leu221Val	missense_variant	Exon 7 of 56	ENST00000410020.8	NP_001124459.1	O75923-13
DYSF	NM_003494.4 link	c.565C>G	p.Leu189Val	missense_variant	Exon 6 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.661C>G	p.Leu221Val	missense_variant	Exon 7 of 56	1	NM_001130987.2	ENSP00000386881.3		O75923-13
DYSF	ENST00000258104.8 link	c.565C>G	p.Leu189Val	missense_variant	Exon 6 of 55	1	NM_003494.4	ENSP00000258104.3		O75923-1

Frequencies

GnomAD3 genomes

AF:

0.0208

AC:

3164

AN:

152186

Hom.:

103

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0686

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00903

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0199

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.000368

Gnomad OTH

AF:

0.0234

GnomAD2 exomes

AF:

0.00671

AC:

1686

AN:

251414

AF XY:

0.00512

show subpopulations

Gnomad AFR exome

AF:

0.0692

Gnomad AMR exome

AF:

0.00356

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.0202

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000308

Gnomad OTH exome

AF:

0.00310

GnomAD4 exome

AF:

0.00274

AC:

4011

AN:

1461880

Hom.:

105

Cov.:

AF XY:

0.00243

AC XY:

1770

AN XY:

727238

show subpopulations

African (AFR)

AF:

0.0720

AC:

2412

AN:

33480

American (AMR)

AF:

0.00438

AC:

196

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26136

East Asian (EAS)

AF:

0.0193

AC:

768

AN:

39700

South Asian (SAS)

AF:

0.000371

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00555

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.000147

AC:

164

AN:

1112002

Other (OTH)

AF:

0.00672

AC:

406

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

261

521

782

1042

1303

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

180

270

360

450

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0208

AC:

3169

AN:

152304

Hom.:

103

Cov.:

AF XY:

0.0204

AC XY:

1520

AN XY:

74478

show subpopulations

African (AFR)

AF:

0.0686

AC:

2850

AN:

41572

American (AMR)

AF:

0.00901

AC:

138

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.0199

AC:

103

AN:

5168

South Asian (SAS)

AF:

0.000207

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.0102

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000368

AC:

AN:

68010

Other (OTH)

AF:

0.0232

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

149

298

447

596

745

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

102

136

170

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00396

Hom.:

Bravo

AF:

0.0238

ESP6500AA

AF:

0.0667

AC:

294

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.00778

AC:

945

Asia WGS

AF:

0.0110

AC:

AN:

3478

EpiCase

AF:

0.000436

EpiControl

AF:

0.000593

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:15

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:7

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Oct 11, 2012

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 30, 2021

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

May 04, 2016

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Dec 10, 2021

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely 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. -

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Neuromuscular disease caused by qualitative or quantitative defects of dysferlin

Benign:2

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Autosomal recessive limb-girdle muscular dystrophy type 2B

Benign:2

Dec 12, 2019

Al Jalila Children’s Genomics Center, Al Jalila Childrens Speciality Hospital

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Sep 16, 2020

Natera, Inc.

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Limb-girdle muscular dystrophy, recessive

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Miyoshi myopathy

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.071

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.35

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.14

.;.;.;.;T;.;.;.;.;.;.

Eigen

Benign

-0.31

Eigen_PC

Benign

-0.13

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.94

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

MetaRNN

Benign

0.0018

T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

.;.;N;.;N;.;.;.;.;.;.

PhyloP100

1.3

PrimateAI

Benign

0.37

PROVEAN

Benign

0.37

N;N;N;N;N;N;N;N;N;N;N

REVEL

Benign

0.18

Sift

Benign

0.33

T;T;T;T;T;T;T;T;T;T;T

Sift4G

Benign

0.30

T;T;T;T;T;T;T;T;T;T;T

Polyphen

0.0

B;B;B;B;B;B;B;B;B;B;B

Vest4

0.17

MVP

0.67

MPC

0.15

ClinPred

0.014

GERP RS

4.9

Varity_R

0.063

gMVP

0.16

Mutation Taster

=98/2

polymorphism (auto)

(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

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over