rs200049922

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001130987.2(DYSF):​c.2668G>A​(p.Glu890Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000096 in 1,614,080 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).

Frequency

Genomes: 𝑓 0.00024 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000081 ( 0 hom. )

Consequence

DYSF
NM_001130987.2 missense

Scores

6
8
5

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:9B:1

Conservation

PhyloP100: 8.00
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.3134218).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
DYSFNM_001130987.2 linkc.2668G>A p.Glu890Lys missense_variant Exon 25 of 56 ENST00000410020.8 NP_001124459.1 O75923-13
DYSFNM_003494.4 linkc.2614G>A p.Glu872Lys missense_variant Exon 25 of 55 ENST00000258104.8 NP_003485.1 O75923-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
DYSFENST00000410020.8 linkc.2668G>A p.Glu890Lys missense_variant Exon 25 of 56 1 NM_001130987.2 ENSP00000386881.3 O75923-13
DYSFENST00000258104.8 linkc.2614G>A p.Glu872Lys missense_variant Exon 25 of 55 1 NM_003494.4 ENSP00000258104.3 O75923-1

Frequencies

GnomAD3 genomes
AF:
0.000243
AC:
37
AN:
152188
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00150
Gnomad ASJ
AF:
0.00288
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000441
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.000227
AC:
57
AN:
251492
Hom.:
0
AF XY:
0.000184
AC XY:
25
AN XY:
135918
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000520
Gnomad ASJ exome
AF:
0.00238
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000114
Gnomad OTH exome
AF:
0.000326
GnomAD4 exome
AF:
0.0000807
AC:
118
AN:
1461892
Hom.:
0
Cov.:
36
AF XY:
0.0000839
AC XY:
61
AN XY:
727248
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.000470
Gnomad4 ASJ exome
AF:
0.00187
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000243
Gnomad4 OTH exome
AF:
0.000331
GnomAD4 genome
AF:
0.000243
AC:
37
AN:
152188
Hom.:
0
Cov.:
33
AF XY:
0.000323
AC XY:
24
AN XY:
74344
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00150
Gnomad4 ASJ
AF:
0.00288
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000441
Gnomad4 OTH
AF:
0.000478
Alfa
AF:
0.000151
Hom.:
0
Bravo
AF:
0.000174
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.000165
AC:
20
EpiCase
AF:
0.0000545
EpiControl
AF:
0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:9Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:5
Jan 22, 2016
Eurofins Ntd Llc (ga)
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

May 11, 2020
GeneDx
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Identified as a single heterozygous variant in a patient with a clinical diagnosis of limb-girdle muscular dystrophy (Nallamilli et al., 2018); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 30564623) -

-
Breakthrough Genomics, Breakthrough Genomics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: not provided

- -

Jul 01, 2016
CeGaT Center for Human Genetics Tuebingen
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Dec 20, 2021
Revvity Omics, Revvity
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Qualitative or quantitative defects of dysferlin Uncertain:1Benign:1
Jan 01, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Jan 13, 2018
Illumina Laboratory Services, Illumina
Significance: Uncertain significance
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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Limb-girdle muscular dystrophy, recessive Uncertain:1
Jun 14, 2016
Illumina Laboratory Services, Illumina
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Autosomal recessive limb-girdle muscular dystrophy type 2B Uncertain:1
Jan 08, 2020
Natera, Inc.
Significance: Uncertain significance
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Miyoshi myopathy Uncertain:1
Jun 14, 2016
Illumina Laboratory Services, Illumina
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
Uncertain
0.46
BayesDel_addAF
Benign
-0.037
T
BayesDel_noAF
Uncertain
0.060
CADD
Pathogenic
27
DANN
Pathogenic
1.0
DEOGEN2
Uncertain
0.70
.;.;.;.;D;.;.;.;.;.;.
Eigen
Pathogenic
0.73
Eigen_PC
Pathogenic
0.70
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Pathogenic
0.98
D;D;D;D;D;D;D;D;D;D;D
M_CAP
Benign
0.078
D
MetaRNN
Benign
0.31
T;T;T;T;T;T;T;T;T;T;T
MetaSVM
Uncertain
0.38
D
MutationAssessor
Benign
1.9
.;.;L;.;L;.;.;.;.;.;.
PrimateAI
Uncertain
0.76
T
PROVEAN
Uncertain
-2.9
D;D;D;D;D;D;D;D;D;D;D
REVEL
Pathogenic
0.74
Sift
Uncertain
0.0070
D;D;D;D;D;D;D;D;D;D;D
Sift4G
Uncertain
0.016
D;D;D;D;D;D;D;D;D;D;D
Polyphen
0.98
D;D;D;D;D;D;D;D;D;D;D
Vest4
0.88
MVP
0.87
MPC
0.46
ClinPred
0.29
T
GERP RS
4.9
Varity_R
0.43
gMVP
0.71

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.

Other links and lift over

dbSNP: rs200049922; hg19: chr2-71795183; API