16-2062997-A-G

Position:

chr16-2062997-A-G

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_000548.5(TSC2):c.1387A>G(p.Ile463Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00103 in 1,551,272 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 Likely benign (★★).

Frequency

Genomes: 𝑓 0.00067 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0011 ( 0 hom. )

Consequence

TSC2
NM_000548.5 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:13O:2

Conservation

PhyloP100: 8.55

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.028308928).

BP6

Variant 16-2062997-A-G is Benign according to our data. Variant chr16-2062997-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 49674.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr16-2062997-A-G is described in Lovd as [Likely_benign]. Variant chr16-2062997-A-G is described in Lovd as [Benign].

BS2

High AC in GnomAd4 at 102 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TSC2	NM_000548.5 linkuse as main transcript	c.1387A>G	p.Ile463Val	missense_variant	14/42	ENST00000219476.9	NP_000539.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TSC2	ENST00000219476.9 linkuse as main transcript	c.1387A>G	p.Ile463Val	missense_variant	14/42	5	NM_000548.5	ENSP00000219476		P49815-1

Frequencies

GnomAD3 genomes

AF:

0.000670

AC:

102

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00151

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00100

Gnomad OTH

AF:

0.00191

GnomAD3 exomes

AF:

0.000500

AC:

AN:

156114

Hom.:

AF XY:

0.000499

AC XY:

AN XY:

82206

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000808

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000439

Gnomad FIN exome

AF:

0.000783

Gnomad NFE exome

AF:

0.00105

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00107

AC:

1491

AN:

1398952

Hom.:

Cov.:

AF XY:

0.00109

AC XY:

753

AN XY:

690014

show subpopulations

Gnomad4 AFR exome

AF:

0.000285

Gnomad4 AMR exome

AF:

0.000308

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000252

Gnomad4 FIN exome

AF:

0.000530

Gnomad4 NFE exome

AF:

0.00128

Gnomad4 OTH exome

AF:

0.00112

GnomAD4 genome

AF:

0.000670

AC:

102

AN:

152320

Hom.:

Cov.:

AF XY:

0.000524

AC XY:

AN XY:

74476

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.00150

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000941

Gnomad4 NFE

AF:

0.00100

Gnomad4 OTH

AF:

0.00189

Alfa

AF:

0.000900

Hom.:

Bravo

AF:

0.000895

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.000254

AC:

ESP6500EA

AF:

0.00159

AC:

ExAC

AF:

0.000112

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:13Other:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:5

Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Sep 01, 2024	TSC2: BS1, BS2 -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, Amsterdam University Medical Center	-	- -
Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Dec 27, 2017	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Jul 02, 2019	This variant is associated with the following publications: (PMID: 23514105, 10205261, 24728327) -

Tuberous sclerosis 2

Benign:3

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	- -
Benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Aug 31, 2022	- -

not specified

Benign:2Other:1

Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
not provided, no classification provided	reference population	ITMI	Sep 19, 2013	- -
Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Nov 14, 2014	- -

Hereditary cancer-predisposing syndrome

Benign:2

Benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Sep 24, 2015	This alteration is classified as 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	Nov 01, 2020	- -

Tuberous sclerosis syndrome

Benign:1Other:1

not provided, no classification provided	curation	Tuberous sclerosis database (TSC2)	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Mar 12, 2018	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. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Uncertain

0.010

CADD

Uncertain

DANN

Uncertain

0.98

DEOGEN2

Benign

0.37

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

Eigen

Uncertain

0.32

Eigen_PC

Uncertain

0.43

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.91

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

M_CAP

Benign

0.064

MetaRNN

Benign

0.028

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

MetaSVM

Uncertain

-0.032

MutationAssessor

Benign

1.6

L;.;.;.;L;L;.;.;.;L;.;L;.;.;.

MutationTaster

Benign

1.0

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

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-0.38

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

REVEL

Uncertain

0.45

Sift

Benign

0.23

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

Sift4G

Benign

0.32

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

Polyphen

0.88

P;.;.;.;P;B;.;.;P;B;.;.;.;.;.

Vest4

0.57

MVP

0.51

ClinPred

0.12

GERP RS

5.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.065

gMVP

0.14

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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