16-2079070-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2PP3BP6

The NM_000548.5(TSC2):​c.3005C>T​(p.Ser1002Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,694 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TSC2
NM_000548.5 missense

Scores

9
9
1

Clinical Significance

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

Conservation

PhyloP100: 7.84
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.789
BP6
Variant 16-2079070-C-T is Benign according to our data. Variant chr16-2079070-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 570889.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
TSC2NM_000548.5 linkuse as main transcriptc.3005C>T p.Ser1002Phe missense_variant 27/42 ENST00000219476.9 NP_000539.2 P49815-1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
TSC2ENST00000219476.9 linkuse as main transcriptc.3005C>T p.Ser1002Phe missense_variant 27/425 NM_000548.5 ENSP00000219476.3 P49815-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD3 exomes
AF:
0.00000399
AC:
1
AN:
250464
Hom.:
0
AF XY:
0.00000737
AC XY:
1
AN XY:
135758
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:
0.00000885
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.85e-7
AC:
1
AN:
1460694
Hom.:
0
Cov.:
31
AF XY:
0.00
AC XY:
0
AN XY:
726650
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:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
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
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsFeb 10, 2024The p.S1002F variant (also known as c.3005C>T), located in coding exon 26 of the TSC2 gene, results from a C to T substitution at nucleotide position 3005. The serine at codon 1002 is replaced by phenylalanine, an amino acid with highly dissimilar properties. This amino acid position is conserved. In addition, this alteration is predicted to be deleterious by in silico analysis. Based on the available evidence, the clinical significance of this alteration remains unclear. -
Tuberous sclerosis 2 Benign:1
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpDec 06, 2022- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.45
BayesDel_addAF
Pathogenic
0.45
D
BayesDel_noAF
Pathogenic
0.41
CADD
Pathogenic
30
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.79
D;.;.;.;.;.;.;.;.;.;.;.;T;.;T
Eigen
Pathogenic
0.76
Eigen_PC
Pathogenic
0.75
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Uncertain
0.94
D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
M_CAP
Pathogenic
0.75
D
MetaRNN
Pathogenic
0.79
D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM
Pathogenic
0.80
D
MutationAssessor
Uncertain
2.3
M;.;.;.;.;.;.;.;.;M;.;.;.;.;.
PrimateAI
Uncertain
0.70
T
PROVEAN
Uncertain
-2.8
D;.;.;D;.;D;.;.;D;D;.;.;.;.;D
REVEL
Pathogenic
0.68
Sift
Uncertain
0.0020
D;.;.;D;.;D;.;.;D;D;.;.;.;.;D
Sift4G
Uncertain
0.0030
D;.;.;D;.;D;.;.;D;D;.;.;.;.;D
Polyphen
1.0
D;.;.;.;D;D;.;.;D;D;.;.;.;.;.
Vest4
0.92
MutPred
0.19
Loss of disorder (P = 0.0211);.;Loss of disorder (P = 0.0211);.;.;.;.;Loss of disorder (P = 0.0211);.;Loss of disorder (P = 0.0211);.;.;.;.;.;
MVP
0.98
ClinPred
0.94
D
GERP RS
5.1
Varity_R
0.52
gMVP
0.58

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.11
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: rs748261129; hg19: chr16-2129071; COSMIC: COSV54767058; COSMIC: COSV54767058; API