chr7-35248721-G-A

Position:

chr7-35248721-G-A

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001077653.2(TBX20):c.501C>T(p.Ser167=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00124 in 1,614,164 control chromosomes in the GnomAD database, including 25 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0011 ( 4 hom., cov: 31)

Exomes 𝑓: 0.0013 ( 21 hom. )

Consequence

TBX20
NM_001077653.2 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: 0.354

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.49).

BP6

Variant 7-35248721-G-A is Benign according to our data. Variant chr7-35248721-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 518497.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr7-35248721-G-A is described in Lovd as [Likely_benign].

BP7

Synonymous conserved (PhyloP=0.354 with no splicing effect.

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.00111 (169/152330) while in subpopulation EAS AF= 0.0205 (106/5172). AF 95% confidence interval is 0.0173. There are 4 homozygotes in gnomad4. There are 87 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

BS2

High AC in GnomAd4 at 169 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TBX20	NM_001077653.2 linkuse as main transcript	c.501C>T	p.Ser167=	synonymous_variant	3/8	ENST00000408931.4	NP_001071121.1
TBX20	NM_001166220.1 linkuse as main transcript	c.501C>T	p.Ser167=	synonymous_variant	3/6		NP_001159692.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TBX20	ENST00000408931.4 linkuse as main transcript	c.501C>T	p.Ser167=	synonymous_variant	3/8	1	NM_001077653.2	ENSP00000386170	P1
TBX20	ENST00000492961.1 linkuse as main transcript	n.512C>T		non_coding_transcript_exon_variant	3/6	1

Frequencies

GnomAD3 genomes

AF:

0.00110

AC:

168

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0204

Gnomad SAS

AF:

0.00124

Gnomad FIN

AF:

0.00160

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000456

Gnomad OTH

AF:

0.000955

GnomAD3 exomes

AF:

0.00197

AC:

496

AN:

251256

Hom.:

AF XY:

0.00193

AC XY:

262

AN XY:

135832

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0203

Gnomad SAS exome

AF:

0.00111

Gnomad FIN exome

AF:

0.00107

Gnomad NFE exome

AF:

0.000493

Gnomad OTH exome

AF:

0.000652

GnomAD4 exome

AF:

0.00125

AC:

1830

AN:

1461834

Hom.:

Cov.:

AF XY:

0.00126

AC XY:

913

AN XY:

727208

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0245

Gnomad4 SAS exome

AF:

0.00109

Gnomad4 FIN exome

AF:

0.00156

Gnomad4 NFE exome

AF:

0.000545

Gnomad4 OTH exome

AF:

0.00118

GnomAD4 genome

AF:

0.00111

AC:

169

AN:

152330

Hom.:

Cov.:

AF XY:

0.00117

AC XY:

AN XY:

74496

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.0205

Gnomad4 SAS

AF:

0.00145

Gnomad4 FIN

AF:

0.00160

Gnomad4 NFE

AF:

0.000456

Gnomad4 OTH

AF:

0.000945

Alfa

AF:

0.000732

Hom.:

Bravo

AF:

0.00131

Asia WGS

AF:

0.00462

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000296

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 30, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Jul 27, 2021	- -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Apr 09, 2023

- -

TBX20-related disorder

Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jan 19, 2024

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Cardiovascular phenotype

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 01, 2016

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.49

CADD

Benign

8.7

DANN

Benign

0.88

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

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