rs768683470

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP6BS2

The NM_000548.5(TSC2):​c.2413G>A​(p.Val805Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,460,530 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. V805V) has been classified as Benign.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

TSC2
NM_000548.5 missense

Scores

1
12
6

Clinical Significance

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

Conservation

PhyloP100: 9.92
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP6
Variant 16-2074257-G-A is Benign according to our data. Variant chr16-2074257-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 570600.We mark this variant Likely_benign, oryginal submissions are: {Benign=1, Uncertain_significance=1}.
BS2
High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
TSC2NM_000548.5 linkc.2413G>A p.Val805Ile missense_variant Exon 22 of 42 ENST00000219476.9 NP_000539.2 P49815-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
TSC2ENST00000219476.9 linkc.2413G>A p.Val805Ile missense_variant Exon 22 of 42 5 NM_000548.5 ENSP00000219476.3 P49815-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD3 exomes
AF:
0.00000799
AC:
2
AN:
250356
Hom.:
0
AF XY:
0.0000147
AC XY:
2
AN XY:
135660
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:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000177
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000342
AC:
5
AN:
1460530
Hom.:
0
Cov.:
31
AF XY:
0.00000413
AC XY:
3
AN XY:
726604
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.0000383
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000270
Gnomad4 OTH exome
AF:
0.0000166
GnomAD4 genome
Cov.:
33
ExAC
AF:
0.00000824
AC:
1

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
Jan 30, 2023
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The p.V805I variant (also known as c.2413G>A), located in coding exon 21 of the TSC2 gene, results from a G to A substitution at nucleotide position 2413. The valine at codon 805 is replaced by isoleucine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. 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
Aug 25, 2023
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.15
BayesDel_addAF
Uncertain
0.13
D
BayesDel_noAF
Uncertain
-0.060
CADD
Pathogenic
29
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.43
T;.;.;.;.;.;.;.;.;.;.;.;T;.;T
Eigen
Uncertain
0.26
Eigen_PC
Uncertain
0.37
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.95
D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
M_CAP
Uncertain
0.17
D
MetaRNN
Uncertain
0.44
T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM
Uncertain
-0.13
T
MutationAssessor
Benign
0.33
N;.;.;.;N;N;.;.;.;N;.;N;.;.;.
PrimateAI
Uncertain
0.51
T
PROVEAN
Benign
-0.37
N;.;.;N;.;N;.;.;N;N;.;.;.;.;N
REVEL
Uncertain
0.49
Sift
Benign
0.11
T;.;.;T;.;T;.;.;T;T;.;.;.;.;T
Sift4G
Benign
0.083
T;.;.;T;.;T;.;.;T;T;.;.;.;.;T
Polyphen
0.99
D;.;.;.;P;D;.;.;P;D;.;.;.;.;.
Vest4
0.71
MutPred
0.53
Gain of helix (P = 0.0496);Gain of helix (P = 0.0496);Gain of helix (P = 0.0496);.;Gain of helix (P = 0.0496);Gain of helix (P = 0.0496);Gain of helix (P = 0.0496);Gain of helix (P = 0.0496);.;Gain of helix (P = 0.0496);Gain of helix (P = 0.0496);Gain of helix (P = 0.0496);Gain of helix (P = 0.0496);Gain of helix (P = 0.0496);.;
MVP
0.42
ClinPred
0.65
D
GERP RS
5.3
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.14
gMVP
0.37

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.14
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.

Other links and lift over

dbSNP: rs768683470; hg19: chr16-2124258; COSMIC: COSV54757308; COSMIC: COSV54757308; API