NM_000368.5:c.*4788A>C

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4BP6_ModerateBS2

The NM_000368.5(TSC1):c.*4788A>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000227 in 233,538 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 0.00024 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00021 ( 0 hom. )

Consequence

TSC1
NM_000368.5 3_prime_UTR

Scores

Clinical Significance

Benign criteria provided, single submitter B:2

Conservation

PhyloP100: 1.71

Publications

0 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: Ambry Genetics, PanelApp Australia, Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae)
lung lymphangioleiomyomatosis
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
tuberous sclerosis complex
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

TSC1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.18).

BP6

Variant 9-132891447-T-G is Benign according to our data. Variant chr9-132891447-T-G is described in ClinVar as [Benign]. Clinvar id is 913083.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 36 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TSC1	NM_000368.5 link	c.*4788A>C		3_prime_UTR_variant	Exon 23 of 23	ENST00000298552.9	NP_000359.1	Q92574-1Q86WV8X5D9D2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TSC1	ENST00000298552.9 link	c.*4788A>C		3_prime_UTR_variant	Exon 23 of 23	1	NM_000368.5	ENSP00000298552.3		Q92574-1
TSC1	ENST00000490179.4 link	c.*4788A>C		3_prime_UTR_variant	Exon 24 of 24	3		ENSP00000495533.2		A0A2R8Y6S8

Frequencies

GnomAD3 genomes

AF:

0.000236

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.00577

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.000209

AC:

AN:

81186

Hom.:

Cov.:

AF XY:

0.000268

AC XY:

AN XY:

37366

show subpopulations

African (AFR)

AF:

0.000257

AC:

AN:

3890

American (AMR)

AF:

0.00

AC:

AN:

2490

Ashkenazi Jewish (ASJ)

AF:

0.00235

AC:

AN:

5108

East Asian (EAS)

AF:

0.00

AC:

AN:

11350

South Asian (SAS)

AF:

0.00

AC:

AN:

702

European-Finnish (FIN)

AF:

0.00

AC:

AN:

484

Middle Eastern (MID)

AF:

0.00

AC:

AN:

492

European-Non Finnish (NFE)

AF:

0.0000801

AC:

AN:

49918

Other (OTH)

AF:

0.00

AC:

AN:

6752

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.460

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000236

AC:

AN:

152352

Hom.:

Cov.:

AF XY:

0.000174

AC XY:

AN XY:

74508

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

41590

American (AMR)

AF:

0.000327

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00577

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000132

AC:

AN:

68026

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000693

Hom.:

Bravo

AF:

0.000170

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Tuberous sclerosis 1

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Isolated focal cortical dysplasia type II

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.18

CADD

Benign

(source)

DANN

Benign

0.88

PhyloP100

1.7

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

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NM_000368.5:c.*4788A>C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over