rs115577291

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_024577.4(SH3TC2):​c.3362C>T​(p.Ala1121Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000685 in 1,614,156 control chromosomes in the GnomAD database, including 12 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A1121E) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0035 ( 4 hom., cov: 32)
Exomes 𝑓: 0.00039 ( 8 hom. )

Consequence

SH3TC2
NM_024577.4 missense

Scores

3
14

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 1.69

Publications

2 publications found
Variant links:
Genes affected
SH3TC2 (HGNC:29427): (SH3 domain and tetratricopeptide repeats 2) This gene encodes a protein with two N-terminal Src homology 3 (SH3) domains and 10 tetratricopeptide repeat (TPR) motifs, and is a member of a small gene family. The gene product has been proposed to be an adapter or docking molecule. Mutations in this gene result in autosomal recessive Charcot-Marie-Tooth disease type 4C, a childhood-onset neurodegenerative disease characterized by demyelination of motor and sensory neurons. [provided by RefSeq, Jul 2008]
SH3TC2 Gene-Disease associations (from GenCC):
  • autosomal recessive hereditary demyelinating motor and sensory neuropathy
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • Charcot-Marie-Tooth disease type 4C
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics
  • susceptibility to mononeuropathy of the median nerve, mild
    Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.0069479644).
BP6
Variant 5-149008967-G-A is Benign according to our data. Variant chr5-149008967-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 234910.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 = 0.00352 (536/152268) while in subpopulation AFR AF = 0.0123 (510/41548). AF 95% confidence interval is 0.0114. There are 4 homozygotes in GnomAd4. There are 265 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
BS2
High Homozygotes in GnomAd4 at 4 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024577.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SH3TC2
NM_024577.4
MANE Select
c.3362C>Tp.Ala1121Val
missense
Exon 15 of 17NP_078853.2

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SH3TC2
ENST00000515425.6
TSL:1 MANE Select
c.3362C>Tp.Ala1121Val
missense
Exon 15 of 17ENSP00000423660.1
SH3TC2
ENST00000512049.5
TSL:1
c.3341C>Tp.Ala1114Val
missense
Exon 15 of 17ENSP00000421860.1
SH3TC2
ENST00000323829.9
TSL:1
n.*2750C>T
non_coding_transcript_exon
Exon 16 of 18ENSP00000313025.5

Frequencies

GnomAD3 genomes
AF:
0.00352
AC:
535
AN:
152150
Hom.:
4
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0123
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00105
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:
0.0000735
Gnomad OTH
AF:
0.00240
GnomAD2 exomes
AF:
0.000911
AC:
229
AN:
251480
AF XY:
0.000655
show subpopulations
Gnomad AFR exome
AF:
0.0127
Gnomad AMR exome
AF:
0.000289
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000703
Gnomad OTH exome
AF:
0.000489
GnomAD4 exome
AF:
0.000390
AC:
570
AN:
1461888
Hom.:
8
Cov.:
31
AF XY:
0.000298
AC XY:
217
AN XY:
727244
show subpopulations
African (AFR)
AF:
0.0133
AC:
446
AN:
33480
American (AMR)
AF:
0.000470
AC:
21
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.0000383
AC:
1
AN:
26136
East Asian (EAS)
AF:
0.000126
AC:
5
AN:
39700
South Asian (SAS)
AF:
0.0000580
AC:
5
AN:
86258
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53420
Middle Eastern (MID)
AF:
0.00225
AC:
13
AN:
5768
European-Non Finnish (NFE)
AF:
0.0000333
AC:
37
AN:
1112006
Other (OTH)
AF:
0.000695
AC:
42
AN:
60396
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
35
70
106
141
176
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
20
40
60
80
100
<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:
0.00352
AC:
536
AN:
152268
Hom.:
4
Cov.:
32
AF XY:
0.00356
AC XY:
265
AN XY:
74458
show subpopulations
African (AFR)
AF:
0.0123
AC:
510
AN:
41548
American (AMR)
AF:
0.00105
AC:
16
AN:
15294
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5184
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4828
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10616
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
292
European-Non Finnish (NFE)
AF:
0.0000735
AC:
5
AN:
68018
Other (OTH)
AF:
0.00237
AC:
5
AN:
2108
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.506
Heterozygous variant carriers
0
31
62
94
125
156
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
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
Alfa
AF:
0.00108
Hom.:
1
Bravo
AF:
0.00411
ESP6500AA
AF:
0.0145
AC:
64
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.00119
AC:
144
Asia WGS
AF:
0.000577
AC:
2
AN:
3478
EpiCase
AF:
0.0000545
EpiControl
AF:
0.0000593

ClinVar

ClinVar submissions as Germline
Significance:Benign/Likely benign
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
-
3
not provided (3)
-
-
1
Charcot-Marie-Tooth disease (1)
-
-
1
Charcot-Marie-Tooth disease type 4 (1)
-
-
1
Charcot-Marie-Tooth disease type 4C (1)
-
-
1
not specified (1)
-
-
1
Susceptibility to mononeuropathy of the median nerve, mild (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.096
BayesDel_addAF
Benign
-0.47
T
BayesDel_noAF
Benign
-0.44
CADD
Benign
18
DANN
Uncertain
0.99
DEOGEN2
Benign
0.19
T
Eigen
Benign
-0.47
Eigen_PC
Benign
-0.55
FATHMM_MKL
Uncertain
0.83
D
LIST_S2
Benign
0.67
T
MetaRNN
Benign
0.0069
T
MetaSVM
Benign
-0.48
T
MutationAssessor
Uncertain
2.2
M
PhyloP100
1.7
PrimateAI
Benign
0.41
T
PROVEAN
Benign
-2.0
N
REVEL
Benign
0.29
Sift
Benign
0.16
T
Sift4G
Benign
0.063
T
Polyphen
1.0
D
Vest4
0.22
MVP
0.74
MPC
0.042
ClinPred
0.016
T
GERP RS
2.2
Varity_R
0.040
gMVP
0.24
Mutation Taster
=98/2
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

Publications

Other links and lift over

dbSNP: rs115577291; hg19: chr5-148388530; API