rs199543257
Positions:
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate
The NM_001130987.2(DYSF):c.2548C>A(p.Gln850Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 33)
Consequence
DYSF
NM_001130987.2 missense
NM_001130987.2 missense
Scores
2
11
4
Clinical Significance
Conservation
PhyloP100: 7.84
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]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 4 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.928
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
DYSF | NM_001130987.2 | c.2548C>A | p.Gln850Lys | missense_variant | 24/56 | ENST00000410020.8 | |
DYSF | NM_003494.4 | c.2494C>A | p.Gln832Lys | missense_variant | 24/55 | ENST00000258104.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
DYSF | ENST00000410020.8 | c.2548C>A | p.Gln850Lys | missense_variant | 24/56 | 1 | NM_001130987.2 | A1 | |
DYSF | ENST00000258104.8 | c.2494C>A | p.Gln832Lys | missense_variant | 24/55 | 1 | NM_003494.4 | A1 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 genomes
?
Cov.:
33
GnomAD4 exome Cov.: 32
GnomAD4 exome
Cov.:
32
GnomAD4 genome ? Cov.: 33
GnomAD4 genome
?
Cov.:
33
Bravo
AF:
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Autosomal recessive limb-girdle muscular dystrophy type 2B Uncertain:1
Uncertain significance, no assertion criteria provided | clinical testing | Natera, Inc. | Apr 07, 2021 | - - |
Qualitative or quantitative defects of dysferlin Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Mar 09, 2022 | This sequence change replaces glutamine, which is neutral and polar, with lysine, which is basic and polar, at codon 832 of the DYSF protein (p.Gln832Lys). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with DYSF-related conditions. ClinVar contains an entry for this variant (Variation ID: 471286). 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:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Uncertain
D
BayesDel_noAF
Uncertain
CADD
Uncertain
DANN
Uncertain
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Pathogenic
D
LIST_S2
Uncertain
D;D;D;D;D;D;D;D;D;D;D
M_CAP
Benign
D
MetaRNN
Pathogenic
D;D;D;D;D;D;D;D;D;D;D
MetaSVM
Benign
T
MutationTaster
Benign
D;D;D;D;D;D;D;D;D;D;D
PrimateAI
Uncertain
T
PROVEAN
Uncertain
D;D;D;D;D;D;D;D;D;D;D
REVEL
Uncertain
Sift
Uncertain
D;D;D;D;D;D;D;D;D;D;D
Sift4G
Uncertain
D;D;D;D;D;D;D;D;D;D;D
Polyphen
D;D;D;D;D;D;D;D;D;D;D
Vest4
MutPred
0.79
.;.;Gain of MoRF binding (P = 0.043);.;Gain of MoRF binding (P = 0.043);.;.;.;.;.;.;
MVP
MPC
0.67
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at