rs145690047

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001130987.2(DYSF):​c.4428C>G​(p.Ile1476Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,461,392 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 Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I1476V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

DYSF
NM_001130987.2 missense

Scores

7
11

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: -2.64

Publications

2 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.3837618).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
DYSFNM_001130987.2 linkc.4428C>G p.Ile1476Met missense_variant Exon 40 of 56 ENST00000410020.8 NP_001124459.1
DYSFNM_003494.4 linkc.4374C>G p.Ile1458Met missense_variant Exon 40 of 55 ENST00000258104.8 NP_003485.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
DYSFENST00000410020.8 linkc.4428C>G p.Ile1476Met missense_variant Exon 40 of 56 1 NM_001130987.2 ENSP00000386881.3
DYSFENST00000258104.8 linkc.4374C>G p.Ile1458Met missense_variant Exon 40 of 55 1 NM_003494.4 ENSP00000258104.3

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD2 exomes
AF:
0.00000399
AC:
1
AN:
250432
AF XY:
0.00000739
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:
0.00000411
AC:
6
AN:
1461392
Hom.:
0
Cov.:
32
AF XY:
0.00000688
AC XY:
5
AN XY:
726880
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33476
American (AMR)
AF:
0.00
AC:
0
AN:
44684
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26126
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39696
South Asian (SAS)
AF:
0.0000698
AC:
6
AN:
86016
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53392
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1111850
Other (OTH)
AF:
0.00
AC:
0
AN:
60384
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.508
Heterozygous variant carriers
0
1
2
2
3
4
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
33

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Uncertain:1
Mar 28, 2024
Revvity Omics, Revvity
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Neuromuscular disease caused by qualitative or quantitative defects of dysferlin Uncertain:1
Mar 27, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces isoleucine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 1458 of the DYSF protein (p.Ile1458Met). This variant is present in population databases (no rsID available, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with DYSF-related conditions. 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 not expected to disrupt DYSF protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.27
BayesDel_addAF
Uncertain
0.030
T
BayesDel_noAF
Benign
-0.090
CADD
Benign
2.4
DANN
Uncertain
0.99
DEOGEN2
Benign
0.0
.;.;.;.;T;.;.;.;.;.;.
Eigen
Benign
-0.57
Eigen_PC
Benign
-0.77
FATHMM_MKL
Benign
0.16
N
LIST_S2
Uncertain
0.92
D;D;D;D;D;D;D;D;D;D;D
M_CAP
Benign
0.074
D
MetaRNN
Benign
0.38
T;T;T;T;T;T;T;T;T;T;T
MetaSVM
Uncertain
0.22
D
MutationAssessor
Benign
0.0
.;.;M;.;M;.;.;.;.;.;.
PhyloP100
-2.6
PrimateAI
Uncertain
0.65
T
PROVEAN
Benign
-1.8
N;N;N;N;N;N;N;N;N;N;N
REVEL
Uncertain
0.58
Sift
Benign
0.064
T;T;T;T;T;T;T;T;T;T;T
Sift4G
Uncertain
0.059
T;T;T;T;T;T;T;T;T;T;T
Vest4
0.50
ClinPred
0.88
D
GERP RS
-7.2
Varity_R
0.14
gMVP
0.65
Mutation Taster
=75/25
polymorphism

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

Other links and lift over

dbSNP: rs145690047; hg19: chr2-71840504; API