rs786205525

chr2-71513889-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 6P and 1B. PM1 PM2 PP5_Moderate BP4

The NM_001130987.2(DYSF):c.727A>G(p.Lys243Glu) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,884 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 Likely pathogenic (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: DYSF NM_001130987.2 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 4.32

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM1: In a domain C2 2 (size 118) in uniprot entity DYSF_HUMAN there are 31 pathogenic changes around while only 10 benign (76%) in NM_001130987.2
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 2-71513889-A-G is Pathogenic according to our data. Variant chr2-71513889-A-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 191111.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP4: Computational evidence support a benign effect (MetaRNN=0.29783562).. Strength limited to SUPPORTING due to the PP5.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DYSF	NM_001130987.2	c.727A>G	p.Lys243Glu	missense_variant	7/56	ENST00000410020.8
DYSF	NM_003494.4	c.631A>G	p.Lys211Glu	missense_variant	6/55	ENST00000258104.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DYSF	ENST00000410020.8	c.727A>G	p.Lys243Glu	missense_variant	7/56	1	NM_001130987.2	A1
DYSF	ENST00000258104.8	c.631A>G	p.Lys211Glu	missense_variant	6/55	1	NM_003494.4	A1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461884 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727242

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:1

Likely pathogenic, criteria provided, single submitter

research

Department Of Translational Genomics (developmental Genetics Section), King Faisal Specialist Hospital & Research Centre

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.24
BayesDel_addAF	Uncertain	0.10	D
BayesDel_noAF	Benign	-0.090
Cadd	Uncertain	24
Dann	Uncertain	1.0
Eigen	Uncertain	0.19
Eigen_PC	Uncertain	0.23
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.94	D;D;D;D;D;D;D;D;D;D;D
M_CAP	Benign	0.051	D
MetaRNN	Benign	0.30	T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Uncertain	0.049	D
MutationTaster	Benign	0.75	D;D;D;D;D;D;D;D;D;D;D
PrimateAI	Uncertain	0.57	T
PROVEAN	Benign	-1.4	N;N;N;N;N;N;N;N;N;N;N
REVEL	Uncertain	0.46
Sift	Uncertain	0.015	D;D;D;D;D;D;D;D;D;D;D
Sift4G	Benign	0.092	T;T;T;T;T;T;T;T;T;T;T
Polyphen		0.71	P;P;P;D;P;P;D;B;D;P;P
Vest4		0.55
MutPred		0.35		.;.;Loss of MoRF binding (P = 0.0017);.;Loss of MoRF binding (P = 0.0017);.;.;.;.;.;.;
MVP		0.83
MPC		0.23
ClinPred		0.77	D
GERP RS		4.8
Varity_R		0.19
gMVP		0.45

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

Other links and lift over

dbSNP: rs786205525; hg19: chr2-71741019;