9-132897563-GT-GTT

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_000368.5(TSC1):​c.2672dupA​(p.Asn891LysfsTer13) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 31)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

TSC1
NM_000368.5 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:7O:1

Conservation

PhyloP100: 1.75

Publications

4 publications found
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]
TSC1 Gene-Disease associations (from GenCC):
  • tuberous sclerosis
    Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
  • tuberous sclerosis 1
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics, Genomics England PanelApp
  • lung lymphangioleiomyomatosis
    Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
  • tuberous sclerosis complex
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 18 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 9-132897563-G-GT is Pathogenic according to our data. Variant chr9-132897563-G-GT is described in ClinVar as Pathogenic. ClinVar VariationId is 48989.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000368.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TSC1
NM_000368.5
MANE Select
c.2672dupAp.Asn891LysfsTer13
frameshift
Exon 21 of 23NP_000359.1Q92574-1
TSC1
NM_001406592.1
c.2672dupAp.Asn891LysfsTer13
frameshift
Exon 21 of 23NP_001393521.1X5D9D2
TSC1
NM_001406593.1
c.2672dupAp.Asn891LysfsTer13
frameshift
Exon 21 of 23NP_001393522.1Q92574-1

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TSC1
ENST00000298552.9
TSL:1 MANE Select
c.2672dupAp.Asn891LysfsTer13
frameshift
Exon 21 of 23ENSP00000298552.3Q92574-1
TSC1
ENST00000490179.4
TSL:3
c.2672dupAp.Asn891LysfsTer13
frameshift
Exon 22 of 24ENSP00000495533.2Q92574-1
TSC1
ENST00000643875.1
c.2672dupAp.Asn891LysfsTer13
frameshift
Exon 21 of 23ENSP00000495158.1Q92574-1

Frequencies

GnomAD3 genomes
Cov.:
31
GnomAD2 exomes
AF:
0.00
AC:
0
AN:
214594
AF XY:
0.00
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 FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
Data not reliable, filtered out with message: AC0
AF:
0.00
AC:
0
AN:
1179686
Hom.:
0
Cov.:
36
AF XY:
0.00
AC XY:
0
AN XY:
580490
African (AFR)
AF:
0.00
AC:
0
AN:
24998
American (AMR)
AF:
0.00
AC:
0
AN:
32008
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
16794
East Asian (EAS)
AF:
0.00
AC:
0
AN:
16420
South Asian (SAS)
AF:
0.00
AC:
0
AN:
67456
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
32694
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4116
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
942110
Other (OTH)
AF:
0.00
AC:
0
AN:
43090
GnomAD4 genome
Cov.:
31
Asia WGS
AF:
0.000289
AC:
1
AN:
3478

ClinVar

ClinVar submissions
Significance:Pathogenic
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
5
-
-
Tuberous sclerosis 1 (5)
1
-
-
Hereditary cancer-predisposing syndrome (1)
1
-
-
Tuberous sclerosis syndrome (2)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
PhyloP100
1.7
Mutation Taster
=0/200
disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs118203724; hg19: chr9-135772950; COSMIC: COSV53765152; COSMIC: COSV53765152; API