17-61400307-C-A

Position:

chr17-61400307-C-A

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP3BS2

The NM_005994.4(TBX2):c.131C>A(p.Pro44Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000349 in 1,087,680 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000036 ( 0 hom. )

Consequence

TBX2
NM_005994.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.30

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.754

BS2

High AC in GnomAdExome4 at 34 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TBX2	NM_005994.4 linkuse as main transcript	c.131C>A	p.Pro44Gln	missense_variant	1/7	ENST00000240328.4	NP_005985.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
TBX2	ENST00000240328.4 linkuse as main transcript	c.131C>A	p.Pro44Gln	missense_variant	1/7	1	NM_005994.4	ENSP00000240328	P1
TBX2	ENST00000419047.5 linkuse as main transcript	c.131C>A	p.Pro44Gln	missense_variant, NMD_transcript_variant	1/7	1		ENSP00000404781
TBX2-AS1	ENST00000592009.1 linkuse as main transcript	n.41-6560G>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000273

AC:

AN:

146508

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000489

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:

0.0000304

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000361

AC:

AN:

941172

Hom.:

Cov.:

AF XY:

0.0000354

AC XY:

AN XY:

452486

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000263

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000403

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000273

AC:

AN:

146508

Hom.:

Cov.:

AF XY:

0.0000281

AC XY:

AN XY:

71228

show subpopulations

Gnomad4 AFR

AF:

0.0000489

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:

0.0000304

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000227

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

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

Nov 21, 2022

Variant summary: TBX2 c.131C>A (p.Pro44Gln) results in a non-conservative amino acid change located in the DNA-binding domain (IPR046360) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 2.6e-05 in 153504 control chromosomes (gnomAD, v3.1). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.131C>A in individuals affected with Vertebral Anomalies and Variable Endocrine and T-Cell Dysfunction and no experimental evidence demonstrating its impact on protein function have been reported. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.35

BayesDel_addAF

Uncertain

0.14

BayesDel_noAF

Uncertain

-0.040

CADD

Pathogenic

DANN

Uncertain

0.98

DEOGEN2

Pathogenic

0.83

Eigen

Uncertain

0.56

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.84

M_CAP

Pathogenic

0.92

MetaRNN

Pathogenic

0.75

MetaSVM

Uncertain

0.56

MutationAssessor

Uncertain

2.3

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.93

PROVEAN

Uncertain

-3.7

REVEL

Uncertain

0.60

Sift

Uncertain

0.0040

Sift4G

Uncertain

0.025

Polyphen

1.0

Vest4

0.54

MutPred

0.28

Loss of glycosylation at P44 (P = 0.0558);

MVP

0.85

ClinPred

0.75

GERP RS

3.3

Varity_R

0.43

gMVP

0.71

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