2-71553085-T-G

Position:

• chr2-71553085-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001130987.2(DYSF):​c.1881T>G​(p.Asp627Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. D627D) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: DYSF NM_001130987.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.58

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 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2491517).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DYSF	NM_001130987.2	c.1881T>G	p.Asp627Glu	missense_variant	20/56	ENST00000410020.8	NP_001124459.1
DYSF	NM_003494.4	c.1827T>G	p.Asp609Glu	missense_variant	20/55	ENST00000258104.8	NP_003485.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DYSF	ENST00000410020.8	c.1881T>G	p.Asp627Glu	missense_variant	20/56	1	NM_001130987.2	ENSP00000386881	A1
DYSF	ENST00000258104.8	c.1827T>G	p.Asp609Glu	missense_variant	20/55	1	NM_003494.4	ENSP00000258104	A1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 68

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.55
CADD	Benign	4.8
DANN	Uncertain	0.98
DEOGEN2	Benign	0.18	.;.;.;.;T;.;.;.;.;.;.
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.72	T;T;T;T;T;T;T;T;T;T;T
M_CAP	Benign	0.045	D
MetaRNN	Benign	0.25	T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.45	T
MutationAssessor	Benign	1.2	.;.;L;.;L;.;.;.;.;.;.
MutationTaster	Benign	0.017	P;P;P;P;P;P;P;P;P;P;P
PrimateAI	Benign	0.44	T
PROVEAN	Benign	-0.43	N;N;N;N;N;N;N;N;N;N;N
REVEL	Benign	0.28
Sift	Benign	1.0	T;T;T;T;T;T;T;T;T;T;T
Sift4G	Benign	1.0	T;T;T;T;T;T;T;T;T;T;T
Polyphen		0.0050	B;B;P;P;P;P;P;B;P;P;B
Vest4		0.091
MutPred		0.40		.;.;Loss of helix (P = 0.0237);.;Loss of helix (P = 0.0237);.;.;.;.;.;.;
MVP		0.50
MPC		0.14
ClinPred		0.25	T
GERP RS		-1.7
Varity_R		0.022
gMVP		0.25

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: rs2303596; hg19: chr2-71780215;