rs121909297

Variant names:

• chr5-156759301-G-A
• rs121909297
• NM_000337.6:c.784G>A

Your query was ambiguous. Multiple possible variants found:

• chr5-156759301-G-A
• chr5-156759301-G-C

Variant summary

Our verdict is Pathogenic. The variant received 14 ACMG points: 14P and 0B. PM2 PP3_Strong PP5_Very_Strong

The NM_000337.6(SGCD):​c.784G>A​(p.Glu262Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,320 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. E262E) has been classified as Likely benign. The gene SGCD is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: SGCD NM_000337.6 missense
• Clinical Significance: Likely pathogenic criteria provided, multiple submitters, no conflicts P:3
• Conservation: PhyloP100: 9.46
• Publications: 9 publications found

Genes affected

SGCD (HGNC:10807): (sarcoglycan delta) The protein encoded by this gene is one of the four known components of the sarcoglycan complex, which is a subcomplex of the dystrophin-glycoprotein complex (DGC). DGC forms a link between the F-actin cytoskeleton and the extracellular matrix. This protein is expressed most abundantly in skeletal and cardiac muscle. Mutations in this gene have been associated with autosomal recessive limb-girdle muscular dystrophy and dilated cardiomyopathy. Alternatively spliced transcript variants encoding distinct isoforms have been observed for this gene. [provided by RefSeq, Jul 2008]

SGCD Gene-Disease associations (from GenCC):

• autosomal recessive limb-girdle muscular dystrophy

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, PanelApp Australia
• autosomal recessive limb-girdle muscular dystrophy type 2F

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Myriad Women’s Health, Orphanet
• familial isolated dilated cardiomyopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• dilated cardiomyopathy

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
• dilated cardiomyopathy 1L

  Inheritance: AD Classification: NO_KNOWN Submitted by: Ambry Genetics

ACMG classification

Specifications for SGCD are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Pathogenic. The variant received 14 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.974
• PP5: Variant 5-156759301-G-A is Pathogenic according to our data. Variant chr5-156759301-G-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 8174.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000337.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SGCD	NM_000337.6	MANE Select	c.784G>A	p.Glu262Lys	missense	Exon 9 of 9	NP_000328.2
	SGCD	NM_001128209.2		c.781G>A	p.Glu261Lys	missense	Exon 8 of 8	NP_001121681.1	Q92629-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SGCD	ENST00000337851.9	TSL:1 MANE Select	c.784G>A	p.Glu262Lys	missense	Exon 9 of 9	ENSP00000338343.4	Q92629-2
	SGCD	ENST00000435422.7	TSL:1	c.781G>A	p.Glu261Lys	missense	Exon 8 of 8	ENSP00000403003.2	Q92629-1
	SGCD	ENST00000959784.1		c.835G>A	p.Glu279Lys	missense	Exon 10 of 10	ENSP00000629843.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461320 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 726950

African (AFR) AF: 0.00 AC: 0 AN: 33464

American (AMR) AF: 0.00 AC: 0 AN: 44714

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86250

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53396

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111542

Other (OTH) AF: 0.00 AC: 0 AN: 60356

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000385 Hom.: 0

ClinVar

ClinVar submissions

Significance: Likely pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
2	-	-	Autosomal recessive limb-girdle muscular dystrophy type 2F (2)
1	-	-	Dilated cardiomyopathy 1L (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.47	D
BayesDel_noAF	Pathogenic	0.44
CADD	Pathogenic	32
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.90	D
Eigen	Uncertain	0.65
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.97	D
M_CAP	Uncertain	0.28	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Uncertain	0.65	D
MutationAssessor	Uncertain	2.4	M
PhyloP100		9.5
PrimateAI	Uncertain	0.78	T
PROVEAN	Uncertain	-2.8	D
REVEL	Pathogenic	0.84
Sift	Uncertain	0.0030	D
Sift4G	Uncertain	0.0050	D
Polyphen		1.0	D
Vest4		0.79
MutPred		0.89		Gain of methylation at E261 (P = 0.0016)
MVP		0.92
MPC		0.53
ClinPred		0.99	D
GERP RS		4.9
Varity_R		0.71
gMVP		0.77
Mutation Taster		=19/81	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs121909297; hg19: chr5-156186312; COSMIC: COSV61911296; COSMIC: COSV61911296;