rs77808502

Variant names:

• chr5-156327097-A-G
• rs77808502
• ENST00000435422.7:c.-136A>G

Variant summary

Our verdict is Benign. The variant received -18 ACMG points: 0P and 18B. BP4_Moderate BP6_Very_Strong BS1 BS2

The ENST00000435422.7(SGCD):​c.-136A>G variant causes a 5 prime UTR change. The variant allele was found at a frequency of 0.00859 in 152,356 control chromosomes in the GnomAD database, including 21 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). The gene SGCD is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: 𝑓 0.0086 (21 hom., cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: SGCD ENST00000435422.7 5_prime_UTR
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7
• Conservation: PhyloP100: 6.65
• Publications: 2 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

LOC124901120 (HGNC:):

ACMG classification

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

Our verdict: Benign. The variant received -18 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.29).
• BP6: Variant 5-156327097-A-G is Benign according to our data. Variant chr5-156327097-A-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 48110.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00859 (1309/152356) while in subpopulation AFR AF = 0.0296 (1231/41584). AF 95% confidence interval is 0.0282. There are 21 homozygotes in GnomAd4. There are 661 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 21 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000435422.7. 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.-179A>G		upstream_gene	N/A	NP_000328.2
	SGCD	NM_001128209.2		c.-136A>G		upstream_gene	N/A	NP_001121681.1	Q92629-1
	SGCD	NM_172244.3		c.-179A>G		upstream_gene	N/A	NP_758447.1	Q92629-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SGCD	ENST00000435422.7	TSL:1	c.-136A>G		5_prime_UTR	Exon 1 of 8	ENSP00000403003.2	Q92629-1
	SGCD	ENST00000959783.1		c.-177A>G		5_prime_UTR	Exon 1 of 9	ENSP00000629842.1
	SGCD	ENST00000959782.1		c.-43-2437A>G		intron	N/A	ENSP00000629841.1

Frequencies

GnomAD3 genomes AF: 0.00857 AC: 1304 AN: 152238 Hom.: 21 Cov.: 33

Gnomad AFR AF: 0.0296

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00334

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000588

Gnomad OTH AF: 0.0105

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 164 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 106

African (AFR) AF: 0.00 AC: 0 AN: 2

American (AMR) AC: 0 AN: 0

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 4

East Asian (EAS) AC: 0 AN: 0

South Asian (SAS) AC: 0 AN: 0

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 8

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 138

Other (OTH) AF: 0.00 AC: 0 AN: 10

GnomAD4 genome AF: 0.00859 AC: 1309 AN: 152356 Hom.: 21 Cov.: 33 AF XY: 0.00887 AC XY: 661 AN XY: 74512

African (AFR) AF: 0.0296 AC: 1231 AN: 41584

American (AMR) AF: 0.00333 AC: 51 AN: 15308

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5184

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10626

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000588 AC: 4 AN: 68032

Other (OTH) AF: 0.0104 AC: 22 AN: 2114

Alfa AF: 0.00679 Hom.: 2

Bravo AF: 0.00963

Asia WGS AF: 0.00289 AC: 10 AN: 3478

ClinVar

ClinVar submissions

Significance: Benign/Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	2	not provided (2)
-	-	1	Autosomal recessive limb-girdle muscular dystrophy type 2F (1)
-	-	1	Dilated cardiomyopathy 1L (1)
-	-	1	Limb-girdle muscular dystrophy, recessive (1)
-	-	1	not specified (1)
-	-	1	Qualitative or quantitative defects of delta-sarcoglycan (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.29
CADD	Benign	21
DANN	Benign	0.93
PhyloP100		6.7
PromoterAI		0.063	Neutral
Mutation Taster		=92/8	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

Other links and lift over

dbSNP: rs77808502; hg19: chr5-155754107;