16-2057112-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 6P and 2B. PM2PM5PP3_ModerateBP6_Moderate

The NM_000548.5(TSC2):​c.782G>T​(p.Arg261Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000715 in 1,399,130 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 Likely benign (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R261P) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 7.1e-7 ( 0 hom. )

Consequence

TSC2
NM_000548.5 missense

Scores

13
5
1

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 9.52
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 4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr16-2057112-G-C is described in Lovd as [Pathogenic].
PP3
MetaRNN computational evidence supports a deleterious effect, 0.885
BP6
Variant 16-2057112-G-T is Benign according to our data. Variant chr16-2057112-G-T is described in ClinVar as [Likely_benign]. Clinvar id is 1465757.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
TSC2NM_000548.5 linkuse as main transcriptc.782G>T p.Arg261Leu missense_variant 9/42 ENST00000219476.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
TSC2ENST00000219476.9 linkuse as main transcriptc.782G>T p.Arg261Leu missense_variant 9/425 NM_000548.5 P49815-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000639
AC:
1
AN:
156508
Hom.:
0
AF XY:
0.0000121
AC XY:
1
AN XY:
82398
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000404
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:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
7.15e-7
AC:
1
AN:
1399130
Hom.:
0
Cov.:
32
AF XY:
0.00000145
AC XY:
1
AN XY:
690084
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000280
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:
0.00
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Tuberous sclerosis 2 Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeDec 06, 2022- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.97
BayesDel_addAF
Pathogenic
0.34
D
BayesDel_noAF
Pathogenic
0.37
CADD
Pathogenic
30
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.91
D;.;.;.;.;.;.;.;.;.;.;.;D;.;D
Eigen
Pathogenic
0.81
Eigen_PC
Pathogenic
0.75
FATHMM_MKL
Pathogenic
0.97
D
LIST_S2
Uncertain
0.95
D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
M_CAP
Pathogenic
0.87
D
MetaRNN
Pathogenic
0.89
D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM
Uncertain
0.50
D
MutationAssessor
Uncertain
2.5
M;.;.;.;M;M;.;.;.;M;.;M;.;.;.
MutationTaster
Benign
1.0
D;D;D;D;D;D;D
PrimateAI
Pathogenic
0.88
D
PROVEAN
Pathogenic
-5.7
D;.;.;D;.;D;.;.;D;D;.;.;.;.;D
REVEL
Pathogenic
0.79
Sift
Uncertain
0.0010
D;.;.;D;.;D;.;.;D;D;.;.;.;.;D
Sift4G
Pathogenic
0.0
D;.;.;D;.;D;.;.;D;D;.;.;.;.;D
Polyphen
1.0
D;.;.;.;D;D;.;.;D;D;.;.;.;.;.
Vest4
0.88
MutPred
0.40
Gain of ubiquitination at K258 (P = 0.0577);Gain of ubiquitination at K258 (P = 0.0577);Gain of ubiquitination at K258 (P = 0.0577);.;Gain of ubiquitination at K258 (P = 0.0577);Gain of ubiquitination at K258 (P = 0.0577);Gain of ubiquitination at K258 (P = 0.0577);Gain of ubiquitination at K258 (P = 0.0577);.;Gain of ubiquitination at K258 (P = 0.0577);Gain of ubiquitination at K258 (P = 0.0577);Gain of ubiquitination at K258 (P = 0.0577);Gain of ubiquitination at K258 (P = 0.0577);Gain of ubiquitination at K258 (P = 0.0577);.;
MVP
0.95
ClinPred
0.99
D
GERP RS
4.7
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.80
gMVP
0.74

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
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: rs45502703; hg19: chr16-2107113; API