rs148404730

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_000231.3(SGCG):​c.235C>T​(p.Arg79Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000139 in 1,611,680 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 Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R79H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00027 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

SGCG
NM_000231.3 missense

Scores

7
7
4

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:7

Conservation

PhyloP100: 3.46

Publications

3 publications found
Variant links:
Genes affected
SGCG (HGNC:10809): (sarcoglycan gamma) This gene encodes gamma-sarcoglycan, one of several sarcolemmal transmembrane glycoproteins that interact with dystrophin. The dystrophin-glycoprotein complex (DGC) spans the sarcolemma and is comprised of dystrophin, syntrophin, alpha- and beta-dystroglycans and sarcoglycans. The DGC provides a structural link between the subsarcolemmal cytoskeleton and the extracellular matrix of muscle cells. Defects in the encoded protein can lead to early onset autosomal recessive muscular dystrophy, in particular limb-girdle muscular dystrophy, type 2C (LGMD2C). [provided by RefSeq, Oct 2008]
SGCG Gene-Disease associations (from GenCC):
  • autosomal recessive limb-girdle muscular dystrophy
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, ClinGen
  • autosomal recessive limb-girdle muscular dystrophy type 2C
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Myriad Women’s Health, Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.23059934).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000231.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SGCG
NM_000231.3
MANE Select
c.235C>Tp.Arg79Cys
missense
Exon 3 of 8NP_000222.2Q13326
SGCG
NM_001378244.1
c.289C>Tp.Arg97Cys
missense
Exon 3 of 8NP_001365173.1
SGCG
NM_001378245.1
c.235C>Tp.Arg79Cys
missense
Exon 4 of 9NP_001365174.1Q13326

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SGCG
ENST00000218867.4
TSL:1 MANE Select
c.235C>Tp.Arg79Cys
missense
Exon 3 of 8ENSP00000218867.3Q13326
SGCG
ENST00000942469.1
c.235C>Tp.Arg79Cys
missense
Exon 3 of 9ENSP00000612528.1
SGCG
ENST00000876364.1
c.235C>Tp.Arg79Cys
missense
Exon 4 of 9ENSP00000546423.1

Frequencies

GnomAD3 genomes
AF:
0.000272
AC:
41
AN:
150868
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.000536
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000528
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00155
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000442
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000310
AC:
78
AN:
251366
AF XY:
0.000309
show subpopulations
Gnomad AFR exome
AF:
0.000554
Gnomad AMR exome
AF:
0.000838
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00185
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000880
Gnomad OTH exome
AF:
0.000326
GnomAD4 exome
AF:
0.000125
AC:
183
AN:
1460700
Hom.:
0
Cov.:
31
AF XY:
0.000131
AC XY:
95
AN XY:
726734
show subpopulations
African (AFR)
AF:
0.000239
AC:
8
AN:
33432
American (AMR)
AF:
0.000738
AC:
33
AN:
44720
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26104
East Asian (EAS)
AF:
0.00109
AC:
43
AN:
39628
South Asian (SAS)
AF:
0.000162
AC:
14
AN:
86212
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53408
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5762
European-Non Finnish (NFE)
AF:
0.0000711
AC:
79
AN:
1111080
Other (OTH)
AF:
0.0000994
AC:
6
AN:
60354
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.456
Heterozygous variant carriers
0
9
18
28
37
46
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
10
20
30
40
50
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.000272
AC:
41
AN:
150980
Hom.:
0
Cov.:
33
AF XY:
0.000231
AC XY:
17
AN XY:
73668
show subpopulations
African (AFR)
AF:
0.000534
AC:
22
AN:
41192
American (AMR)
AF:
0.000528
AC:
8
AN:
15164
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3466
East Asian (EAS)
AF:
0.00155
AC:
8
AN:
5148
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4768
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10110
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
292
European-Non Finnish (NFE)
AF:
0.0000442
AC:
3
AN:
67838
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.508
Heterozygous variant carriers
0
2
4
7
9
11
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.000128
Hom.:
0
Bravo
AF:
0.000321
ESP6500AA
AF:
0.000227
AC:
1
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.000222
AC:
27
Asia WGS
AF:
0.000866
AC:
3
AN:
3478

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
4
-
Autosomal recessive limb-girdle muscular dystrophy type 2C (4)
-
3
-
not provided (3)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.084
BayesDel_addAF
Benign
-0.11
T
BayesDel_noAF
Uncertain
0.070
CADD
Uncertain
25
DANN
Pathogenic
1.0
DEOGEN2
Pathogenic
0.96
D
Eigen
Uncertain
0.65
Eigen_PC
Uncertain
0.60
FATHMM_MKL
Uncertain
0.82
D
LIST_S2
Uncertain
0.96
D
M_CAP
Uncertain
0.24
D
MetaRNN
Benign
0.23
T
MetaSVM
Pathogenic
0.99
D
MutationAssessor
Uncertain
2.7
M
PhyloP100
3.5
PrimateAI
Benign
0.34
T
PROVEAN
Pathogenic
-5.7
D
REVEL
Pathogenic
0.74
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0
D
Polyphen
1.0
D
Vest4
0.53
MVP
0.99
MPC
0.44
ClinPred
0.092
T
GERP RS
5.5
Varity_R
0.63
gMVP
0.77
Mutation Taster
=45/55
disease causing

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

Other links and lift over

dbSNP: rs148404730; hg19: chr13-23808789; API