chr16-2062991-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM1BS2

The NM_000548.5(TSC2):c.1381G>A(p.Val461Met) variant causes a missense change. The variant allele was found at a frequency of 0.00000516 in 1,550,966 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V461A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000050 ( 0 hom. )

Consequence

TSC2
NM_000548.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:1

Conservation

PhyloP100: 4.53

Publications

9 publications found

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 Gene-Disease associations (from GenCC):

tuberous sclerosis
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
tuberous sclerosis 2
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, Ambry Genetics
lymphangioleiomyomatosis
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
tuberous sclerosis complex
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

TSC2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 11 benign, 32 uncertain in NM_000548.5

BS2

High AC in GnomAdExome4 at 7 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000548.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TSC2	NM_000548.5	MANE Select	c.1381G>A	p.Val461Met	missense	Exon 14 of 42	NP_000539.2	P49815-1
TSC2	NM_001406663.1		c.1381G>A	p.Val461Met	missense	Exon 14 of 42	NP_001393592.1	A0A2R8Y6C9
TSC2	NM_001114382.3		c.1381G>A	p.Val461Met	missense	Exon 14 of 41	NP_001107854.1	P49815-4

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TSC2	ENST00000219476.9	TSL:5 MANE Select	c.1381G>A	p.Val461Met	missense	Exon 14 of 42	ENSP00000219476.3	P49815-1
TSC2	ENST00000350773.9	TSL:1	c.1381G>A	p.Val461Met	missense	Exon 14 of 41	ENSP00000344383.4	P49815-4
TSC2	ENST00000401874.7	TSL:1	c.1381G>A	p.Val461Met	missense	Exon 14 of 40	ENSP00000384468.2	P49815-5

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152214

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000641

AC:

AN:

155922

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000500

AC:

AN:

1398752

Hom.:

Cov.:

AF XY:

0.00000725

AC XY:

AN XY:

689924

show subpopulations

African (AFR)

AF:

0.0000633

AC:

AN:

31588

American (AMR)

AF:

0.00

AC:

AN:

35700

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25172

East Asian (EAS)

AF:

0.00

AC:

AN:

35730

South Asian (SAS)

AF:

0.0000126

AC:

AN:

79228

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48954

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5574

European-Non Finnish (NFE)

AF:

0.00000278

AC:

AN:

1078834

Other (OTH)

AF:

0.0000172

AC:

AN:

57972

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.461

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.00000657

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74358

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41458

American (AMR)

AF:

0.00

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.000207

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68026

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.00

Hom.:

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Tuberous sclerosis 2 (2)

Hereditary cancer-predisposing syndrome (1)

not provided (1)

Tuberous sclerosis syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.58

BayesDel_addAF

Pathogenic

0.22

BayesDel_noAF

Uncertain

0.080

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.80

Eigen

Uncertain

0.59

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Benign

0.73

LIST_S2

Uncertain

0.93

M_CAP

Uncertain

0.22

MetaRNN

Uncertain

0.57

MetaSVM

Uncertain

0.31

MutationAssessor

Uncertain

2.1

PhyloP100

4.5

PrimateAI

Uncertain

0.69

PROVEAN

Benign

-2.3

REVEL

Uncertain

0.62

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0050

Polyphen

1.0

Vest4

0.76

MutPred

0.45

Loss of sheet (P = 0.0104)

MVP

0.66

ClinPred

0.78

GERP RS

4.3

PromoterAI

0.076

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.36

gMVP

0.67

Mutation Taster

=92/8

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over