rs751125011

Variant names:

• chr9-132905993-C-A
• rs751125011
• NM_000368.5:c.1585G>T

Your query was ambiguous. Multiple possible variants found:

• chr9-132905993-C-A
• chr9-132905993-C-T
• chr9-132905993-C-G

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 4P and 5B. PM1 PM2 BP4_Strong BP6

The NM_000368.5(TSC1):​c.1585G>T​(p.Ala529Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A529T) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TSC1 NM_000368.5 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:1
• Conservation: PhyloP100: -1.63
• Publications: 3 publications found

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

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 11 benign, 33 uncertain in NM_000368.5
• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.03585151).
• BP6: Variant 9-132905993-C-A is Benign according to our data. Variant chr9-132905993-C-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 819604.

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.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TSC1	NM_000368.5	MANE Select	c.1585G>T	p.Ala529Ser	missense	Exon 15 of 23	NP_000359.1	Q92574-1
	TSC1	NM_001406592.1		c.1585G>T	p.Ala529Ser	missense	Exon 15 of 23	NP_001393521.1	X5D9D2
	TSC1	NM_001406593.1		c.1585G>T	p.Ala529Ser	missense	Exon 15 of 23	NP_001393522.1	Q92574-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TSC1	ENST00000298552.9	TSL:1 MANE Select	c.1585G>T	p.Ala529Ser	missense	Exon 15 of 23	ENSP00000298552.3	Q92574-1
	TSC1	ENST00000490179.4	TSL:3	c.1585G>T	p.Ala529Ser	missense	Exon 16 of 24	ENSP00000495533.2	Q92574-1
	TSC1	ENST00000643875.1		c.1585G>T	p.Ala529Ser	missense	Exon 15 of 23	ENSP00000495158.1	Q92574-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	-	1	Hereditary cancer-predisposing syndrome (1)
-	1	-	Tuberous sclerosis 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.069
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.56
CADD	Benign	0.0020
DANN	Benign	0.45
DEOGEN2	Benign	0.39	T
Eigen	Benign	-1.9
Eigen_PC	Benign	-2.0
FATHMM_MKL	Benign	0.038	N
LIST_S2	Benign	0.47	T
M_CAP	Benign	0.024	T
MetaRNN	Benign	0.036	T
MetaSVM	Benign	-0.94	T
MutationAssessor	Benign	0.41	N
PhyloP100		-1.6
PrimateAI	Benign	0.24	T
PROVEAN	Benign	0.57	N
REVEL	Benign	0.17
Sift	Benign	0.95	T
Sift4G	Benign	0.95	T
Polyphen		0.0	B
Vest4		0.090
MutPred		0.29		Gain of glycosylation at A529 (P = 0.0153)
MVP		0.47
MPC		0.46
ClinPred		0.015	T
GERP RS		-12
Varity_R		0.017
gMVP		0.13
Mutation Taster		=92/8	polymorphism

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

Other links and lift over

dbSNP: rs751125011; hg19: chr9-135781380; COSMIC: COSV100051241; COSMIC: COSV100051241;