chr16-2083776-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_ModerateBP6_Moderate

The NM_000548.5(TSC2):​c.3965C>T​(p.Ala1322Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000031 in 1,611,222 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 (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 34)
Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

TSC2
NM_000548.5 missense

Scores

8
11

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 2.71
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 -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.16447306).
BP6
Variant 16-2083776-C-T is Benign according to our data. Variant chr16-2083776-C-T is described in ClinVar as [Benign]. Clinvar id is 535995.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.3965C>T p.Ala1322Val missense_variant 33/42 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.3965C>T p.Ala1322Val missense_variant 33/425 NM_000548.5 ENSP00000219476.3 P49815-1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152220
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000408
AC:
1
AN:
245056
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
132918
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:
0.00000274
AC:
4
AN:
1458884
Hom.:
0
Cov.:
32
AF XY:
0.00000413
AC XY:
3
AN XY:
725526
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:
0.00000270
Gnomad4 OTH exome
AF:
0.0000166
GnomAD4 genome
AF:
0.00000656
AC:
1
AN:
152338
Hom.:
0
Cov.:
34
AF XY:
0.00
AC XY:
0
AN XY:
74486
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000147
Gnomad4 OTH
AF:
0.00

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), LabcorpOct 20, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.081
BayesDel_addAF
Uncertain
0.12
D
BayesDel_noAF
Uncertain
-0.060
CADD
Benign
19
DANN
Uncertain
0.98
DEOGEN2
Uncertain
0.48
T;.;.;.;.;.;.;.;.;.;.;.;T;.;T
Eigen
Benign
-0.60
Eigen_PC
Benign
-0.61
FATHMM_MKL
Uncertain
0.83
D
LIST_S2
Benign
0.78
T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
M_CAP
Uncertain
0.17
D
MetaRNN
Benign
0.16
T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM
Uncertain
-0.089
T
MutationAssessor
Benign
1.4
L;.;.;.;.;.;.;.;.;.;.;.;.;.;.
MutationTaster
Benign
0.93
D;D;D;D;D;D;D
PrimateAI
Benign
0.39
T
PROVEAN
Benign
-0.87
N;.;.;N;.;N;.;.;N;N;.;.;.;.;N
REVEL
Uncertain
0.46
Sift
Benign
0.084
T;.;.;T;.;T;.;.;T;T;.;.;.;.;T
Sift4G
Benign
0.32
T;.;.;T;.;T;.;.;T;T;.;.;.;.;T
Polyphen
0.020
B;.;.;.;B;B;.;.;B;B;.;.;.;.;.
Vest4
0.17
MutPred
0.40
Gain of catalytic residue at A1322 (P = 0.0026);.;.;.;.;.;.;Gain of catalytic residue at A1322 (P = 0.0026);.;.;.;.;.;.;.;
MVP
0.93
ClinPred
0.27
T
GERP RS
3.1
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Varity_R
0.033
gMVP
0.32

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: rs1380402492; hg19: chr16-2133777; API