NM_000548.5:c.945G>A

Variant names:

• chr16-2058843-G-A
• rs763948768
• NM_000548.5:c.945G>A

Variant summary

Our verdict is Benign. The variant received -16 ACMG points: 0P and 16B. BP4_Strong BP6_Very_Strong BS2

The NM_000548.5(TSC2):​c.945G>A​(p.Ser315Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000292 in 1,607,044 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 Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. S315S) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000030 (0 hom.)
• Consequence: TSC2 NM_000548.5 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7
• Conservation: PhyloP100: -0.393
• Publications: 1 publications found

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]

TSC2 Gene-Disease associations (from GenCC):

• tuberous sclerosis

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• tuberous sclerosis 2

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, Ambry Genetics
• lymphangioleiomyomatosis

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• tuberous sclerosis complex

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -16 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.56).
• BP6: Variant 16-2058843-G-A is Benign according to our data. Variant chr16-2058843-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 256639.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS2: High AC in GnomAdExome4 at 44 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000548.5. 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
	TSC2	NM_000548.5	MANE Select	c.945G>A	p.Ser315Ser	synonymous	Exon 10 of 42	NP_000539.2	P49815-1
	TSC2	NM_001406663.1		c.945G>A	p.Ser315Ser	synonymous	Exon 10 of 42	NP_001393592.1	A0A2R8Y6C9
	TSC2	NM_001114382.3		c.945G>A	p.Ser315Ser	synonymous	Exon 10 of 41	NP_001107854.1	P49815-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TSC2	ENST00000219476.9	TSL:5 MANE Select	c.945G>A	p.Ser315Ser	synonymous	Exon 10 of 42	ENSP00000219476.3	P49815-1
	TSC2	ENST00000350773.9	TSL:1	c.945G>A	p.Ser315Ser	synonymous	Exon 10 of 41	ENSP00000344383.4	P49815-4
	TSC2	ENST00000401874.7	TSL:1	c.945G>A	p.Ser315Ser	synonymous	Exon 10 of 40	ENSP00000384468.2	P49815-5

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152214 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000724

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: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000420 AC: 1 AN: 237988 AF XY: 0.00000778

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: 0.00000935

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000302 AC: 44 AN: 1454830 Hom.: 0 Cov.: 32 AF XY: 0.0000221 AC XY: 16 AN XY: 722872

African (AFR) AF: 0.000179 AC: 6 AN: 33442

American (AMR) AF: 0.0000228 AC: 1 AN: 43810

Ashkenazi Jewish (ASJ) AF: 0.0000386 AC: 1 AN: 25888

East Asian (EAS) AF: 0.00 AC: 0 AN: 39582

South Asian (SAS) AF: 0.0000237 AC: 2 AN: 84542

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52804

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5754

European-Non Finnish (NFE) AF: 0.0000298 AC: 33 AN: 1108820

Other (OTH) AF: 0.0000166 AC: 1 AN: 60188

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152214 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74366

African (AFR) AF: 0.0000724 AC: 3 AN: 41450

American (AMR) AF: 0.00 AC: 0 AN: 15272

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5198

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10626

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68048

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.000127 Hom.: 0

Bravo AF: 0.0000529

ClinVar

ClinVar submissions

Significance: Benign/Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	3	Tuberous sclerosis 2 (3)
-	-	1	Hereditary cancer-predisposing syndrome (1)
-	-	1	not provided (1)
-	-	1	not specified (1)
-	-	1	Tuberous sclerosis syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.56
CADD	Benign	3.2
DANN	Benign	0.54
PhyloP100		-0.39

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: rs763948768; hg19: chr16-2108844;