chr16-2084695-A-C

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4BP6_Moderate

The NM_000548.5(TSC2):ā€‹c.4473A>Cā€‹(p.Lys1491Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000691 in 1,446,184 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (ā˜…).

Frequency

Genomes: not found (cov: 33)
Exomes š‘“: 6.9e-7 ( 0 hom. )

Consequence

TSC2
NM_000548.5 missense

Scores

1
11
7

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 1.02
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 Likely_benign. Variant got -1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.36257312).
BP6
Variant 16-2084695-A-C is Benign according to our data. Variant chr16-2084695-A-C is described in ClinVar as [Benign]. Clinvar id is 947184.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
TSC2NM_000548.5 linkuse as main transcriptc.4473A>C p.Lys1491Asn missense_variant 34/42 ENST00000219476.9 NP_000539.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
TSC2ENST00000219476.9 linkuse as main transcriptc.4473A>C p.Lys1491Asn missense_variant 34/425 NM_000548.5 ENSP00000219476 P49815-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD3 exomes
AF:
0.00000422
AC:
1
AN:
237246
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
129826
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:
0.00000904
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.91e-7
AC:
1
AN:
1446184
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
719828
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:
8.99e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33

ClinVar

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

Submissions by phenotype

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
Pathogenic
0.57
BayesDel_addAF
Uncertain
0.15
D
BayesDel_noAF
Uncertain
-0.030
CADD
Benign
22
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.48
T;.;.;.;.;.;.;.;.;.;.;.;T;.;T
Eigen
Benign
-0.014
Eigen_PC
Benign
-0.057
FATHMM_MKL
Uncertain
0.90
D
LIST_S2
Uncertain
0.97
D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
M_CAP
Uncertain
0.24
D
MetaRNN
Benign
0.36
T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM
Uncertain
0.31
D
MutationAssessor
Uncertain
2.2
M;.;.;.;.;.;.;.;.;.;.;.;.;.;.
MutationTaster
Benign
1.0
D;D;D;D;D;D;D
PrimateAI
Uncertain
0.65
T
PROVEAN
Benign
-1.1
N;.;.;N;.;N;.;.;N;N;.;.;.;.;N
REVEL
Uncertain
0.60
Sift
Benign
0.13
T;.;.;T;.;T;.;.;T;T;.;.;.;.;T
Sift4G
Benign
0.078
T;.;.;T;.;T;.;.;T;T;.;.;.;.;T
Polyphen
1.0
D;.;.;.;D;D;.;.;D;D;.;.;.;.;.
Vest4
0.63
MutPred
0.37
Loss of ubiquitination at K1491 (P = 0.0047);.;.;.;.;.;.;Loss of ubiquitination at K1491 (P = 0.0047);.;.;.;.;.;.;.;
MVP
0.92
ClinPred
0.64
D
GERP RS
-0.80
Varity_R
0.33
gMVP
0.50

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
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: rs1266546987; hg19: chr16-2134696; API