Variant chr16-2084652-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP6

The NM_000548.5(TSC2):c.4430G>A(p.Arg1477Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,447,044 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

TSC2
NM_000548.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 1.96

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 Likely_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.1468007).

BP6

Variant 16-2084652-G-A is Benign according to our data. Variant chr16-2084652-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 578769.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Benign=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TSC2	NM_000548.5 linkuse as main transcript	c.4430G>A	p.Arg1477Lys	missense_variant	34/42	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.4430G>A	p.Arg1477Lys	missense_variant	34/42	5	NM_000548.5	ENSP00000219476		P49815-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000841

AC:

AN:

237826

Hom.:

AF XY:

0.00000768

AC XY:

AN XY:

130254

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000903

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000138

AC:

AN:

1447044

Hom.:

Cov.:

AF XY:

0.00000278

AC XY:

AN XY:

720350

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000829

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 03, 2022

The p.R1477K variant (also known as c.4430G>A), located in coding exon 33 of the TSC2 gene, results from a G to A substitution at nucleotide position 4430. The arginine at codon 1477 is replaced by lysine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Tuberous sclerosis 2

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 22, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.071

BayesDel_addAF

Uncertain

0.074

BayesDel_noAF

Uncertain

-0.030

CADD

Benign

DANN

Benign

0.76

DEOGEN2

Uncertain

0.46

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

Eigen

Benign

-0.38

Eigen_PC

Benign

-0.24

FATHMM_MKL

Uncertain

0.91

LIST_S2

Benign

0.75

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

M_CAP

Uncertain

0.17

MetaRNN

Benign

0.15

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

MetaSVM

Uncertain

0.23

MutationAssessor

Benign

1.5

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

MutationTaster

Benign

0.89

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

PrimateAI

Benign

0.42

PROVEAN

Benign

-1.2

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

REVEL

Uncertain

0.56

Sift

Benign

0.61

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

Sift4G

Benign

0.77

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

Polyphen

0.99

D;.;.;.;B;B;.;.;B;B;.;.;.;.;.

Vest4

0.26

MutPred

0.34

Gain of ubiquitination at R1477 (P = 0.0289);.;.;.;.;.;.;Gain of ubiquitination at R1477 (P = 0.0289);.;.;.;.;.;.;.;

MVP

0.94

ClinPred

0.034

GERP RS

3.9

Varity_R

0.076

gMVP

0.48

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