rs6489957

Variant names:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_181486.4(TBX5):c.1281C>T(p.Ser427Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00301 in 1,614,076 control chromosomes in the GnomAD database, including 117 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.016 ( 60 hom., cov: 33)

Exomes 𝑓: 0.0016 ( 57 hom. )

Consequence

TBX5
NM_181486.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: -0.488

Variant links:

Genes affected

TBX5 (HGNC:11604): (T-box transcription factor 5) This gene is a member of a phylogenetically conserved family of genes that share a common DNA-binding domain, the T-box. T-box genes encode transcription factors involved in the regulation of developmental processes. This gene is closely linked to related family member T-box 3 (ulnar mammary syndrome) on human chromosome 12. The encoded protein may play a role in heart development and specification of limb identity. Mutations in this gene have been associated with Holt-Oram syndrome, a developmental disorder affecting the heart and upper limbs. Several transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Jul 2008]

TBX5 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=-0.73).

BP6

Variant 12-114355808-G-A is Benign according to our data. Variant chr12-114355808-G-A is described in ClinVar as [Benign]. Clinvar id is 255491.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr12-114355808-G-A is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=-0.488 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0544 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TBX5	NM_181486.4 link	c.1281C>T	p.Ser427Ser	synonymous_variant	Exon 9 of 9	ENST00000405440.7	NP_852259.1	Q99593-1
TBX5	NM_000192.3 link	c.1281C>T	p.Ser427Ser	synonymous_variant	Exon 9 of 9		NP_000183.2	Q99593-1
TBX5	NM_080717.4 link	c.1131C>T	p.Ser377Ser	synonymous_variant	Exon 8 of 8		NP_542448.1	Q99593-3
TBX5	XM_017019912.2 link	c.1329C>T	p.Ser443Ser	synonymous_variant	Exon 9 of 9		XP_016875401.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TBX5	ENST00000405440.7 link	c.1281C>T	p.Ser427Ser	synonymous_variant	Exon 9 of 9	1	NM_181486.4	ENSP00000384152.3	Q99593-1
TBX5	ENST00000310346.8 link	c.1281C>T	p.Ser427Ser	synonymous_variant	Exon 9 of 9	1		ENSP00000309913.4	Q99593-1
TBX5	ENST00000349716.9 link	c.1131C>T	p.Ser377Ser	synonymous_variant	Exon 8 of 8	1		ENSP00000337723.5	Q99593-3

Frequencies

GnomAD3 genomes

AF:

0.0162

AC:

2467

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0561

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00687

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.0115

GnomAD3 exomes

AF:

0.00437

AC:

1097

AN:

250758

Hom.:

AF XY:

0.00321

AC XY:

436

AN XY:

135624

show subpopulations

Gnomad AFR exome

AF:

0.0590

Gnomad AMR exome

AF:

0.00309

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.000131

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000141

Gnomad OTH exome

AF:

0.00261

GnomAD4 exome

AF:

0.00163

AC:

2386

AN:

1461790

Hom.:

Cov.:

AF XY:

0.00136

AC XY:

986

AN XY:

727210

show subpopulations

Gnomad4 AFR exome

AF:

0.0574

Gnomad4 AMR exome

AF:

0.00340

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000176

Gnomad4 SAS exome

AF:

0.000162

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000621

Gnomad4 OTH exome

AF:

0.00354

GnomAD4 genome

AF:

0.0163

AC:

2479

AN:

152286

Hom.:

Cov.:

AF XY:

0.0156

AC XY:

1165

AN XY:

74450

show subpopulations

Gnomad4 AFR

AF:

0.0563

Gnomad4 AMR

AF:

0.00686

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.0113

Alfa

AF:

0.00933

Hom.:

Bravo

AF:

0.0190

Asia WGS

AF:

0.00289

AC:

AN:

3478

EpiCase

AF:

0.000164

EpiControl

AF:

0.000119

ClinVar

Significance: Benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Feb 13, 2017

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

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: The c.1281C>T (p.Ser427=) in TBX5 gene is a synonymous change that involves a non-conserved nucleotide. 5/5 programs in Alamut predict that this variant does not affect normal splicing, however no functional studies supporting this notion were published at the time of evaluation. The variant is present in the control population dataset of ExAC at frequency of 0.00545 (652/119626 chrs tested), predominantly in individuals of African origin (0.06092; 612/ 10046 chrs), including 17 homozygotes. The observed frequency exceeds the maximum expected allele frequency for a pathogenic variant in this gene (0.0000013), suggesting that it is a benign polymorphism. The variant of interest has been cited as Benign by several reputable databases/clinical laboratories. Taking together, the variant was classified as Benign. -

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Mar 03, 2015

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Benign:1

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Holt-Oram syndrome

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. -

Aortic valve disease 2

Benign:1

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cardiovascular phenotype

Benign:1

Aug 04, 2015

Ambry Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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

-0.73

CADD

Benign

0.13

DANN

Benign

0.89

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