Variant 7-35202477-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001077653.2(TBX20):c.1297A>G(p.Ile433Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000659 in 151,798 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Consequence

TBX20
NM_001077653.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.91

Variant links:

Genes affected

TBX20 (HGNC:11598): (T-box transcription factor 20) This gene encodes a T-box family member. The T-box family members share a common DNA binding domain, termed the T-box, and they are transcription factors involved in the regulation of developmental processes. This gene is essential for heart development. Mutations in this gene are associated with diverse cardiac pathologies, including defects in septation, valvulogenesis and cardiomyopathy. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]

TBX20 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.20234635).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TBX20	NM_001077653.2 linkuse as main transcript	c.1297A>G	p.Ile433Val	missense_variant	8/8	ENST00000408931.4	NP_001071121.1	Q9UMR3
TBX20	XM_017012456.2 linkuse as main transcript	c.700A>G	p.Ile234Val	missense_variant	6/6		XP_016867945.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TBX20	ENST00000408931.4 linkuse as main transcript	c.1297A>G	p.Ile433Val	missense_variant	8/8	1	NM_001077653.2	ENSP00000386170.3		Q9UMR3

Frequencies

GnomAD3 genomes

AF:

0.00000659

AC:

AN:

151798

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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

GnomAD3 exomes

AF:

0.00000425

AC:

AN:

235528

Hom.:

AF XY:

0.00

AC XY:

AN XY:

127554

show subpopulations

Gnomad AFR exome

AF:

0.0000705

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000659

AC:

AN:

151798

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74106

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ESP6500AA

AF:

0.000260

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00000827

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 09, 2023

The p.I433V variant (also known as c.1297A>G), located in coding exon 8 of the TBX20 gene, results from an A to G substitution at nucleotide position 1297. The isoleucine at codon 433 is replaced by valine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.24

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Benign

0.14

Eigen

Benign

-0.50

Eigen_PC

Benign

-0.30

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.80

M_CAP

Benign

0.015

MetaRNN

Benign

0.20

MetaSVM

Benign

-0.73

MutationAssessor

Benign

0.20

PrimateAI

Uncertain

0.77

PROVEAN

Benign

0.26

REVEL

Benign

0.25

Sift

Benign

0.33

Sift4G

Benign

1.0

Polyphen

0.0030

Vest4

0.47

MVP

0.69

MPC

0.50

ClinPred

0.061

GERP RS

1.6

Varity_R

0.067

gMVP

0.17

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over