rs911600402

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP6

The NM_000548.5(TSC2):​c.994G>A​(p.Glu332Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,792 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

TSC2
NM_000548.5 missense

Scores

2
11
6

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 9.77
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 Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP6
Variant 16-2060688-G-A is Benign according to our data. Variant chr16-2060688-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 468197.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
TSC2NM_000548.5 linkc.994G>A p.Glu332Lys missense_variant Exon 11 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.994G>A p.Glu332Lys missense_variant Exon 11 of 42 5 NM_000548.5 ENSP00000219476.3 P49815-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000796
AC:
2
AN:
251358
Hom.:
0
AF XY:
0.0000147
AC XY:
2
AN XY:
135904
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000109
Gnomad SAS 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:
0.00000274
AC:
4
AN:
1461792
Hom.:
0
Cov.:
32
AF XY:
0.00000275
AC XY:
2
AN XY:
727194
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:
0.0000232
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000180
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
Asia WGS
AF:
0.000289
AC:
1
AN:
3478

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:2
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Tuberous sclerosis 2 Benign:2
Nov 04, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Aug 27, 2024
Myriad Genetics, Inc.
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

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. -

Hereditary cancer-predisposing syndrome Uncertain:1
Nov 19, 2024
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The p.E332K variant (also known as c.994G>A), located in coding exon 10 of the TSC2 gene, results from a G to A substitution at nucleotide position 994. The glutamic acid at codon 332 is replaced by lysine, an amino acid with similar properties. This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this variant remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.19
BayesDel_addAF
Uncertain
0.054
T
BayesDel_noAF
Uncertain
0.070
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.43
T;.;.;.;.;.;.;.;.;.;.;.;T;.;T
Eigen
Uncertain
0.29
Eigen_PC
Uncertain
0.33
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.93
D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
M_CAP
Pathogenic
0.34
D
MetaRNN
Uncertain
0.68
D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM
Uncertain
-0.21
T
MutationAssessor
Benign
1.4
L;.;.;.;L;L;.;.;.;L;.;L;.;.;.
PrimateAI
Uncertain
0.72
T
PROVEAN
Benign
-1.2
N;.;.;N;.;N;.;.;N;N;.;.;.;.;N
REVEL
Uncertain
0.60
Sift
Benign
0.034
D;.;.;T;.;T;.;.;T;T;.;.;.;.;T
Sift4G
Benign
0.25
T;.;.;T;.;T;.;.;T;T;.;.;.;.;T
Polyphen
0.86
P;.;.;.;D;P;.;.;P;P;.;.;.;.;.
Vest4
0.69
MutPred
0.52
Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);.;Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);.;Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);Gain of ubiquitination at E332 (P = 0.0203);.;
MVP
0.79
ClinPred
0.56
D
GERP RS
4.6
Varity_R
0.23
gMVP
0.39

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.030
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: rs911600402; hg19: chr16-2110689; API