Genetic Variant TBX2:p.His76Gln (chr17-61400404-C-A) – ACMG Classification: Benign (-9 pts)

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_005994.4(TBX2):c.228C>A(p.His76Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00014 in 1,488,184 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 (no stars).

Frequency

Genomes: 𝑓 0.00084 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000062 ( 0 hom. )

Consequence

TBX2
NM_005994.4 missense

Scores

Clinical Significance

Likely benign no assertion criteria provided B:1

Conservation

PhyloP100: 2.40

Variant links:

Genes affected

TBX2 (HGNC:11597): (T-box transcription factor 2) 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 product is the human homolog of mouse Tbx2, and shares strong sequence similarity with Drosophila omb protein. Expression studies indicate that this gene may have a potential role in tumorigenesis as an immortalizing agent. Transcript heterogeneity due to alternative polyadenylation has been noted for this gene. [provided by RefSeq, Jul 2008]

TBX2 links:

TBX2-AS1 (HGNC:50355): (TBX2 antisense RNA 1)

TBX2-AS1 links:

ENSG00000267131 (HGNC:):

ENSG00000267131 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.042583108).

BP6

Variant 17-61400404-C-A is Benign according to our data. Variant chr17-61400404-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 3055220.Status of the report is no_assertion_criteria_provided, 0 stars.

BS2

High AC in GnomAd4 at 126 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TBX2	NM_005994.4 link	c.228C>A	p.His76Gln	missense_variant	Exon 1 of 7	ENST00000240328.4	NP_005985.3	Q13207A0A024QZ86

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TBX2	ENST00000240328.4 link	c.228C>A	p.His76Gln	missense_variant	Exon 1 of 7	1	NM_005994.4	ENSP00000240328.3		Q13207

Frequencies

GnomAD3 genomes

AF:

0.000832

AC:

125

AN:

150176

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00294

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000133

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:

0.0000149

Gnomad OTH

AF:

0.000483

GnomAD3 exomes

AF:

0.0000752

AC:

AN:

119636

Hom.:

AF XY:

0.0000454

AC XY:

AN XY:

66116

show subpopulations

Gnomad AFR exome

AF:

0.000930

Gnomad AMR exome

AF:

0.000222

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

AF:

0.0000620

AC:

AN:

1337900

Hom.:

Cov.:

AF XY:

0.0000530

AC XY:

AN XY:

660848

show subpopulations

Gnomad4 AFR exome

AF:

0.00175

Gnomad4 AMR exome

AF:

0.000388

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000762

Gnomad4 OTH exome

AF:

0.000220

GnomAD4 genome

AF:

0.000838

AC:

126

AN:

150284

Hom.:

Cov.:

AF XY:

0.000764

AC XY:

AN XY:

73334

show subpopulations

Gnomad4 AFR

AF:

0.00295

Gnomad4 AMR

AF:

0.000133

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000149

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000278

Hom.:

Bravo

AF:

0.000835

ExAC

AF:

0.0000853

AC:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

TBX2-related disorder

Benign:1

Sep 22, 2023

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

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

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.28

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.17

CADD

Pathogenic

DANN

Benign

0.97

DEOGEN2

Uncertain

0.63

Eigen

Uncertain

0.24

Eigen_PC

Benign

0.22

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.83

M_CAP

Pathogenic

0.97

MetaRNN

Benign

0.043

MetaSVM

Uncertain

0.027

MutationAssessor

Benign

1.8

PrimateAI

Pathogenic

0.95

PROVEAN

Benign

-1.5

REVEL

Uncertain

0.34

Sift

Benign

0.21

Sift4G

Benign

0.44

Polyphen

1.0

Vest4

0.31

MutPred

0.26

Gain of solvent accessibility (P = 0.0837);

MVP

0.66

ClinPred

0.090

GERP RS

3.4

Varity_R

0.21

gMVP

0.33

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