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5-156344554-C-T

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 2P and 8B. PM2BP4_ModerateBP6BP7BS1

The NM_000337.6(SGCD):​c.69C>T​(p.Tyr23=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000434 in 1,611,946 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000040 ( 0 hom. )

Consequence

SGCD
NM_000337.6 synonymous

Scores

2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:5

Conservation

PhyloP100: 3.33
Variant links:
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.45).
BP6
Variant 5-156344554-C-T is Benign according to our data. Variant chr5-156344554-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 48121.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=5, Uncertain_significance=1}.
BP7
Synonymous conserved (PhyloP=3.33 with no splicing effect.
BS1
Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.0000723 (11/152192) while in subpopulation AMR AF= 0.000524 (8/15270). AF 95% confidence interval is 0.000261. There are 0 homozygotes in gnomad4. There are 6 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
SGCDNM_000337.6 linkuse as main transcriptc.69C>T p.Tyr23= synonymous_variant 3/9 ENST00000337851.9
LOC124901120XR_007059016.1 linkuse as main transcriptn.234+2899G>A intron_variant, non_coding_transcript_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
SGCDENST00000337851.9 linkuse as main transcriptc.69C>T p.Tyr23= synonymous_variant 3/91 NM_000337.6 P4Q92629-2
SGCDENST00000435422.7 linkuse as main transcriptc.66C>T p.Tyr22= synonymous_variant 2/81 A1Q92629-1
SGCDENST00000517913.5 linkuse as main transcriptc.69C>T p.Tyr23= synonymous_variant 5/105 Q92629-3
SGCDENST00000524347.2 linkuse as main transcriptc.69C>T p.Tyr23= synonymous_variant, NMD_transcript_variant 3/65

Frequencies

GnomAD3 genomes
AF:
0.0000723
AC:
11
AN:
152076
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000525
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000441
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000117
AC:
29
AN:
247604
Hom.:
0
AF XY:
0.000104
AC XY:
14
AN XY:
134346
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000589
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000800
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000404
AC:
59
AN:
1459754
Hom.:
0
Cov.:
31
AF XY:
0.0000441
AC XY:
32
AN XY:
726062
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.000494
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:
0.0000333
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000723
AC:
11
AN:
152192
Hom.:
0
Cov.:
32
AF XY:
0.0000806
AC XY:
6
AN XY:
74412
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.000524
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000441
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000141
Hom.:
0
Bravo
AF:
0.0000756
EpiCase
AF:
0.00
EpiControl
AF:
0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:5
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:1Benign:1
Uncertain significance, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Aug 29, 2016- -
Likely benign, criteria provided, single submitterclinical testingGeneDxMar 24, 2021- -
not specified Benign:2
Likely benign, criteria provided, single submitterclinical testingLaboratory for Molecular Medicine, Mass General Brigham Personalized MedicineJul 31, 2012Tyr23Tyr in exon 03 of SGCD: This variant is not expected to have clinical signi ficance because it does not alter an amino acid residue and is not located withi n the splice consensus sequence. Tyr23Tyr in exon 03 of SGCD (allele frequency = n/a) -
Likely benign, criteria provided, single submitterclinical testingPreventionGenetics, part of Exact Sciences-- -
Autosomal recessive limb-girdle muscular dystrophy type 2F Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeJan 29, 2024- -
Autosomal recessive limb-girdle muscular dystrophy type 2F;C1847667:Dilated cardiomyopathy 1L Benign:1
Likely benign, criteria provided, single submitterclinical testingCounsylMar 02, 2017- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.45
CADD
Benign
12
DANN
Benign
0.53

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.18
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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs397517923; hg19: chr5-155771564; API