Genetic Variant TBX2:p.Ala67_Ala68dup (chr17-61400362-C-CGCGGCG) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP3BS2

The NM_005994.4(TBX2):c.198_203dupGGCGGC(p.Ala67_Ala68dup) variant causes a disruptive inframe insertion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000161 in 1,033,830 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.00023 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 0 hom. )

Consequence

TBX2
NM_005994.4 disruptive_inframe_insertion

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.53

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 Likely_benign. Variant got -5 ACMG points.

BP3

Nonframeshift variant in repetitive region in NM_005994.4

BS2

High AC in GnomAd4 at 34 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TBX2	NM_005994.4 link	c.198_203dupGGCGGC	p.Ala67_Ala68dup	disruptive_inframe_insertion	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.198_203dupGGCGGC	p.Ala67_Ala68dup	disruptive_inframe_insertion	Exon 1 of 7	1	NM_005994.4	ENSP00000240328.3		Q13207

Frequencies

GnomAD3 genomes

AF:

0.000231

AC:

AN:

146902

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000636

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000785

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000303

Gnomad OTH

AF:

0.000495

GnomAD4 exome

AF:

0.000149

AC:

132

AN:

886824

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

415134

show subpopulations

Gnomad4 AFR exome

AF:

0.000236

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000141

Gnomad4 SAS exome

AF:

0.000168

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000140

Gnomad4 OTH exome

AF:

0.000395

GnomAD4 genome

AF:

0.000231

AC:

AN:

147006

Hom.:

Cov.:

AF XY:

0.000196

AC XY:

AN XY:

71554

show subpopulations

Gnomad4 AFR

AF:

0.000634

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000787

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000303

Gnomad4 OTH

AF:

0.000489

Bravo

AF:

0.000230

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over