16-2084229-C-T

Position:

chr16-2084229-C-T

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_000548.5(TSC2):c.4007C>T(p.Ser1336Leu) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000128 in 1,584,628 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00062 ( 1 hom., cov: 34)

Exomes 𝑓: 0.000076 ( 0 hom. )

Consequence

TSC2
NM_000548.5 missense, splice_region

Scores

Splicing: ADA: 0.8962

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:12O:1

Conservation

PhyloP100: 7.08

Variant links:

Genes affected

TSC2 (HGNC:12363): (TSC complex subunit 2) This gene is a tumor suppressor gene that encodes the growth inhibitory protein tuberin. Tuberin interacts with hamartin to form the TSC protein complex which functions in the control of cell growth. This TSC protein complex negatively regulates mammalian target of rapamycin complex 1 (mTORC1) signaling which is a major regulator of anabolic cell growth. Mutations in this gene have been associated with tuberous sclerosis and lymphangioleiomyomatosis. [provided by RefSeq, May 2022]

TSC2 links:

TSC2 (HGNC:):

TSC2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.02463454).

BP6

Variant 16-2084229-C-T is Benign according to our data. Variant chr16-2084229-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 135385.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=4, Uncertain_significance=1, not_provided=1, Benign=7}. Variant chr16-2084229-C-T is described in Lovd as [Likely_pathogenic]. Variant chr16-2084229-C-T is described in Lovd as [Benign].

BS2

High AC in GnomAd4 at 94 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TSC2	NM_000548.5 linkuse as main transcript	c.4007C>T	p.Ser1336Leu	missense_variant, splice_region_variant	34/42	ENST00000219476.9	NP_000539.2	P49815-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TSC2	ENST00000219476.9 linkuse as main transcript	c.4007C>T	p.Ser1336Leu	missense_variant, splice_region_variant	34/42	5	NM_000548.5	ENSP00000219476.3		P49815-1

Frequencies

GnomAD3 genomes

AF:

0.000618

AC:

AN:

152116

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00225

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000139

AC:

AN:

202142

Hom.:

AF XY:

0.000136

AC XY:

AN XY:

109946

show subpopulations

Gnomad AFR exome

AF:

0.00226

Gnomad AMR exome

AF:

0.00

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:

0.00

Gnomad OTH exome

AF:

0.000190

GnomAD4 exome

AF:

0.0000761

AC:

109

AN:

1432394

Hom.:

Cov.:

AF XY:

0.0000591

AC XY:

AN XY:

710204

show subpopulations

Gnomad4 AFR exome

AF:

0.00251

Gnomad4 AMR exome

AF:

0.0000240

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000263

Gnomad4 SAS exome

AF:

0.0000242

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000821

Gnomad4 OTH exome

AF:

0.000220

GnomAD4 genome

AF:

0.000617

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.000605

AC XY:

AN XY:

74438

show subpopulations

Gnomad4 AFR

AF:

0.00224

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000538

Hom.:

Bravo

AF:

0.000756

ESP6500AA

AF:

0.00138

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000116

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:12Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Tuberous sclerosis 2

Uncertain:1Benign:6

Benign, criteria provided, single submitter	clinical testing	KCCC/NGS Laboratory, Kuwait Cancer Control Center	Jul 07, 2023	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Nov 07, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Sep 06, 2016	- -
Likely benign, criteria provided, single submitter	clinical testing	Myriad Genetics, Inc.	Aug 06, 2024	This variant is considered likely benign. This variant has been observed at a population frequency that is significantly greater than expected given the associated disease prevalence and penetrance. -
Likely benign, criteria provided, single submitter	clinical testing	Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center	Sep 22, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Aug 10, 2022	- -

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Apr 04, 2019	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Aug 20, 2019	This variant is associated with the following publications: (PMID: 26703369, 24728327) -

Hereditary cancer-predisposing syndrome

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Aug 20, 2018	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. -
Benign, criteria provided, single submitter	curation	Sema4, Sema4	Apr 29, 2021	- -

Tuberous sclerosis syndrome

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

TSC2-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Aug 22, 2019

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). -

not specified

Other:1

not provided, no classification provided

reference population

ITMI

Sep 19, 2013

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.40

BayesDel_addAF

Benign

0.0058

BayesDel_noAF

Pathogenic

0.23

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.59

D;.;.;.;.;.;.;.;.;.;.;.;T;.;T

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.52

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

D;D;D;D;D;D;D;D;D;D;D;D;D;D;D

M_CAP

Pathogenic

0.39

MetaRNN

Benign

0.025

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Uncertain

0.79

MutationAssessor

Uncertain

2.2

M;.;.;.;.;.;.;.;.;.;.;.;.;.;.

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-1.7

N;.;.;N;.;N;.;.;N;N;.;.;.;.;N

REVEL

Uncertain

0.51

Sift

Benign

0.057

T;.;.;T;.;T;.;.;T;T;.;.;.;.;T

Sift4G

Uncertain

0.057

T;.;.;T;.;T;.;.;T;T;.;.;.;.;T

Polyphen

1.0

D;.;.;.;D;D;.;.;D;D;.;.;.;.;.

Vest4

0.73

MVP

0.86

ClinPred

0.063

GERP RS

4.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.14

gMVP

0.44

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.90

dbscSNV1_RF

Benign

0.70

SpliceAI score (max)

0.020

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