NM_024577.4:c.3686A>T

Variant names:

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_StrongBS1BS2

The NM_024577.4(SH3TC2):c.3686A>T(p.Asp1229Val) variant causes a missense change. The variant allele was found at a frequency of 0.00429 in 1,614,136 control chromosomes in the GnomAD database, including 23 homozygotes. 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 0.0031 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0044 ( 23 hom. )

Consequence

SH3TC2
NM_024577.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:9

Conservation

PhyloP100: 5.89

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.05998248).

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00307 (467/152266) while in subpopulation NFE AF= 0.00504 (343/68000). AF 95% confidence interval is 0.0046. There are 0 homozygotes in gnomad4. There are 218 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 23 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SH3TC2	NM_024577.4 link	c.3686A>T	p.Asp1229Val	missense_variant	Exon 17 of 17	ENST00000515425.6	NP_078853.2	Q8TF17-1A0A514TP98

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SH3TC2	ENST00000515425.6 link	c.3686A>T	p.Asp1229Val	missense_variant	Exon 17 of 17	1	NM_024577.4	ENSP00000423660.1		Q8TF17-1

Frequencies

GnomAD3 genomes

AF:

0.00308

AC:

468

AN:

152152

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00101

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00386

Gnomad ASJ

AF:

0.00375

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000621

Gnomad FIN

AF:

0.000282

Gnomad MID

AF:

0.00318

Gnomad NFE

AF:

0.00504

Gnomad OTH

AF:

0.00191

GnomAD3 exomes

AF:

0.00262

AC:

657

AN:

251182

Hom.:

AF XY:

0.00281

AC XY:

381

AN XY:

135778

show subpopulations

Gnomad AFR exome

AF:

0.000677

Gnomad AMR exome

AF:

0.00309

Gnomad ASJ exome

AF:

0.00228

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000947

Gnomad FIN exome

AF:

0.000462

Gnomad NFE exome

AF:

0.00404

Gnomad OTH exome

AF:

0.00310

GnomAD4 exome

AF:

0.00442

AC:

6460

AN:

1461870

Hom.:

Cov.:

AF XY:

0.00428

AC XY:

3110

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.000836

Gnomad4 AMR exome

AF:

0.00326

Gnomad4 ASJ exome

AF:

0.00191

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000719

Gnomad4 FIN exome

AF:

0.000524

Gnomad4 NFE exome

AF:

0.00520

Gnomad4 OTH exome

AF:

0.00493

GnomAD4 genome

AF:

0.00307

AC:

467

AN:

152266

Hom.:

Cov.:

AF XY:

0.00293

AC XY:

218

AN XY:

74452

show subpopulations

Gnomad4 AFR

AF:

0.00101

Gnomad4 AMR

AF:

0.00386

Gnomad4 ASJ

AF:

0.00375

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.000282

Gnomad4 NFE

AF:

0.00504

Gnomad4 OTH

AF:

0.00189

Alfa

AF:

0.00432

Hom.:

Bravo

AF:

0.00328

TwinsUK

AF:

0.00458

AC:

ALSPAC

AF:

0.00493

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00488

AC:

ExAC

AF:

0.00248

AC:

301

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00496

EpiControl

AF:

0.00569

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5Benign:9

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:2

Sep 04, 2024

Athena Diagnostics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 08, 2015

Genomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of Philadelphia

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Feb 22, 2018

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3686A>T; p.Asp1229Val variant (rs146920285) has been reported in the heterozygous state, in the absence of any other detected pathogenic SH3TC2 variants, in two HMSN I patients (Lassuthova 2011) and one CMT2 patient; however, the variant did not segregate with disease in the CMT family (Hoyer 2014). This variant is listed in the genome Aggregation Database (gnomAD) with a non-Finnish European population frequency of 0.4% (identified on 510 out of 126,418 chromosomes), in the Saudi Human Genome Program with a frequency of 2.6% (identified on 102 out of 3,920 chromosomes; Abouelhoda 2016), and is classified as likely benign/uncertain significance in ClinVar (ID: 188089). Based on the available information, the p.Asp1229Val variant is likely to be benign. -

not provided

Uncertain:1Benign:2

Jan 22, 2016

Eurofins Ntd Llc (ga)

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 25, 2020

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is associated with the following publications: (PMID: 21291453, 27884173, 25025039, 27582484, 32376792) -

Sep 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

SH3TC2: BS2 -

Charcot-Marie-Tooth disease

Uncertain:1Benign:1

Molecular Genetics Laboratory, London Health Sciences Centre

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Inherited Neuropathy Consortium

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Charcot-Marie-Tooth disease type 4C

Uncertain:1Benign:1

May 28, 2019

Mendelics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Susceptibility to mononeuropathy of the median nerve, mild

Uncertain:1

Feb 13, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Inborn genetic diseases

Benign:1

Jun 22, 2021

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

SH3TC2-related disorder

Benign:1

Mar 16, 2020

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Charcot-Marie-Tooth disease type 4

Benign:1

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.56

BayesDel_addAF

Uncertain

0.060

BayesDel_noAF

Pathogenic

0.31

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.56

.;D;.

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.58

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

D;D;D

M_CAP

Uncertain

0.19

MetaRNN

Benign

0.060

T;T;T

MetaSVM

Uncertain

0.11

MutationAssessor

Uncertain

2.6

.;M;.

PrimateAI

Uncertain

0.53

PROVEAN

Pathogenic

-8.6

D;D;D

REVEL

Pathogenic

0.86

Sift

Uncertain

0.0010

D;D;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

1.0

.;D;.

Vest4

0.81

MVP

0.93

MPC

0.31

ClinPred

0.053

GERP RS

4.9

Varity_R

0.77

gMVP

0.70

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over