NM_000368.5:c.899C>G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000368.5(TSC1):​c.899C>G​(p.Thr300Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Consequence

TSC1
NM_000368.5 missense

Scores

2
10
7

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.61
Variant links:
Genes affected
TSC1 (HGNC:12362): (TSC complex subunit 1) This gene is a tumor suppressor gene that encodes the growth inhibitory protein hamartin. The encoded protein interacts with and stabilizes the GTPase activating protein tuberin. This hamartin-tuberin complex negatively regulates mammalian target of rapamycin complex 1 (mTORC1) signaling which is a major regulator of anabolic cell growth. This protein also functions as a co-chaperone for Hsp90 that inhibits its ATPase activity. This protein functions as a facilitator of Hsp90-mediated folding of kinase and non-kinase clients, including TSC2 and thereby preventing their ubiquitination and proteasomal degradation. 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;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
TSC1NM_000368.5 linkc.899C>G p.Thr300Arg missense_variant Exon 9 of 23 ENST00000298552.9 NP_000359.1 Q92574-1Q86WV8X5D9D2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
TSC1ENST00000298552.9 linkc.899C>G p.Thr300Arg missense_variant Exon 9 of 23 1 NM_000368.5 ENSP00000298552.3 Q92574-1
TSC1ENST00000490179.4 linkc.899C>G p.Thr300Arg missense_variant Exon 10 of 24 3 ENSP00000495533.2 A0A2R8Y6S8

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
31
GnomAD4 genome
Cov.:
32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.091
BayesDel_addAF
Pathogenic
0.21
D
BayesDel_noAF
Uncertain
0.070
CADD
Benign
20
DANN
Uncertain
0.99
DEOGEN2
Uncertain
0.47
T;.;T;.;T;.;T;.;.;.;.;.;.;.;.;.;.;T;.
Eigen
Uncertain
0.43
Eigen_PC
Uncertain
0.52
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.91
.;D;D;D;.;.;.;D;D;.;D;.;.;D;D;D;D;D;D
M_CAP
Benign
0.081
D
MetaRNN
Uncertain
0.62
D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM
Uncertain
0.54
D
MutationAssessor
Uncertain
2.0
M;.;M;.;M;.;M;.;.;.;.;.;.;.;.;.;.;.;.
PrimateAI
Benign
0.44
T
PROVEAN
Benign
-0.96
N;N;N;.;.;.;.;.;.;.;.;.;.;.;.;.;.;N;.
REVEL
Uncertain
0.45
Sift
Benign
0.34
T;T;T;.;.;.;.;.;.;.;.;.;.;.;.;.;.;D;.
Sift4G
Benign
0.23
T;T;T;.;.;.;.;.;.;.;.;.;.;.;.;.;.;D;.
Polyphen
0.15
B;.;B;.;B;.;B;.;.;.;.;P;P;P;.;.;.;P;.
Vest4
0.56
MutPred
0.49
Loss of glycosylation at T300 (P = 0.0176);.;Loss of glycosylation at T300 (P = 0.0176);Loss of glycosylation at T300 (P = 0.0176);Loss of glycosylation at T300 (P = 0.0176);Loss of glycosylation at T300 (P = 0.0176);Loss of glycosylation at T300 (P = 0.0176);Loss of glycosylation at T300 (P = 0.0176);Loss of glycosylation at T300 (P = 0.0176);.;.;Loss of glycosylation at T300 (P = 0.0176);Loss of glycosylation at T300 (P = 0.0176);Loss of glycosylation at T300 (P = 0.0176);Loss of glycosylation at T300 (P = 0.0176);Loss of glycosylation at T300 (P = 0.0176);.;Loss of glycosylation at T300 (P = 0.0176);.;
MVP
0.71
MPC
1.2
ClinPred
0.87
D
GERP RS
5.9
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.15
gMVP
0.50

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.040
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr9-135787683; API