17-61466230-A-G

Variant names:

• chr17-61466230-A-G
• rs758597
• NM_001321120.2:c.401+292A>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001321120.2(TBX4):​c.401+292A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.997 in 152,288 control chromosomes in the GnomAD database, including 75,626 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 1.0 (75626 hom., cov: 32)
• Consequence: TBX4 NM_001321120.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0620
• Publications: 2 publications found

Genes affected

TBX4 (HGNC:11603): (T-box transcription factor 4) 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 the human homolog of mouse Tbx4, which is closely linked to Tbx2 on mouse chromosome 11. Similarly this gene, like TBX2, maps to human chromosome 17. Expression studies in mouse and chicken show that Tbx4 is expressed in developing hindlimb, but not in forelimb buds, suggesting a role for this gene in regulating limb development and specification of limb identity. [provided by RefSeq, Jul 2008]

TBX4 Gene-Disease associations (from GenCC):

• coxopodopatellar syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics
• pulmonary arterial hypertension

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• autosomal recessive amelia

  Inheritance: AR Classification: MODERATE, LIMITED Submitted by: G2P, Ambry Genetics
• heritable pulmonary arterial hypertension

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.994 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TBX4	NM_001321120.2	c.401+292A>G		intron_variant	Intron 4 of 8	ENST00000644296.1	NP_001308049.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TBX4	ENST00000644296.1	c.401+292A>G		intron_variant	Intron 4 of 8		NM_001321120.2	ENSP00000495986.1

Frequencies

GnomAD3 genomes AF: 0.997 AC: 151652 AN: 152170 Hom.: 75569 Cov.: 32

Gnomad AFR AF: 0.988

Gnomad AMI AF: 1.00

Gnomad AMR AF: 0.999

Gnomad ASJ AF: 1.00

Gnomad EAS AF: 1.00

Gnomad SAS AF: 1.00

Gnomad FIN AF: 1.00

Gnomad MID AF: 1.00

Gnomad NFE AF: 1.00

Gnomad OTH AF: 0.996

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.997 AC: 151768 AN: 152288 Hom.: 75626 Cov.: 32 AF XY: 0.997 AC XY: 74199 AN XY: 74446

African (AFR) AF: 0.988 AC: 41047 AN: 41538

American (AMR) AF: 0.999 AC: 15288 AN: 15306

Ashkenazi Jewish (ASJ) AF: 1.00 AC: 3472 AN: 3472

East Asian (EAS) AF: 1.00 AC: 5174 AN: 5174

South Asian (SAS) AF: 1.00 AC: 4822 AN: 4822

European-Finnish (FIN) AF: 1.00 AC: 10622 AN: 10622

Middle Eastern (MID) AF: 1.00 AC: 294 AN: 294

European-Non Finnish (NFE) AF: 1.00 AC: 68033 AN: 68036

Other (OTH) AF: 0.996 AC: 2104 AN: 2112

Alfa AF: 0.999 Hom.: 3914

Bravo AF: 0.996

Asia WGS AF: 0.999 AC: 3476 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	4.4
DANN	Benign	0.33
PhyloP100		0.062
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs758597; hg19: chr17-59543591;