7-139957723-A-G

Variant names:

• chr7-139957723-A-G
• rs5770
• NM_001061.7:c.778A>G

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001061.7(TBXAS1):​c.778A>G​(p.Arg260Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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: not found (cov: 32)
• Consequence: TBXAS1 NM_001061.7 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.02
• Publications: 10 publications found

Genes affected

TBXAS1 (HGNC:11609): (thromboxane A synthase 1) This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. However, this protein is considered a member of the cytochrome P450 superfamily on the basis of sequence similarity rather than functional similarity. This endoplasmic reticulum membrane protein catalyzes the conversion of prostglandin H2 to thromboxane A2, a potent vasoconstrictor and inducer of platelet aggregation. The enzyme plays a role in several pathophysiological processes including hemostasis, cardiovascular disease, and stroke. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2008]

TBXAS1 Gene-Disease associations (from GenCC):

• ghosal hematodiaphyseal dysplasia

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, Orphanet, PanelApp Australia, Labcorp Genetics (formerly Invitae), ClinGen

ENSG00000305529 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.38219684).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001061.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TBXAS1	NM_001061.7	MANE Select	c.778A>G	p.Arg260Gly	missense	Exon 8 of 13	NP_001052.3	P24557-1
	TBXAS1	NM_001166253.4		c.916A>G	p.Arg306Gly	missense	Exon 9 of 14	NP_001159725.2	P24557-3
	TBXAS1	NM_001130966.5		c.778A>G	p.Arg260Gly	missense	Exon 12 of 17	NP_001124438.2	P24557-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TBXAS1	ENST00000448866.7	TSL:1 MANE Select	c.778A>G	p.Arg260Gly	missense	Exon 8 of 13	ENSP00000402536.3	P24557-1
	TBXAS1	ENST00000336425.10	TSL:1	c.778A>G	p.Arg260Gly	missense	Exon 12 of 17	ENSP00000338087.7	P24557-1
	TBXAS1	ENST00000425687.5	TSL:1	c.577A>G	p.Arg193Gly	missense	Exon 10 of 15	ENSP00000388736.1	P24557-2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.00000729 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Uncertain	0.032	T
BayesDel_noAF	Benign	-0.19
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.065	T
Eigen	Benign	-0.0056
Eigen_PC	Benign	0.11
FATHMM_MKL	Benign	0.73	D
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.048	D
MetaRNN	Benign	0.38	T
MetaSVM	Benign	-0.61	T
PhyloP100		2.0
PrimateAI	Benign	0.30	T
PROVEAN	Uncertain	-2.9	D
REVEL	Uncertain	0.33
Sift	Benign	0.071	T
Sift4G	Benign	0.23	T
Polyphen		0.020	B
Vest4		0.14
MVP		0.76
MPC		0.16
ClinPred		0.93	D
GERP RS		3.9
gMVP		0.63
Mutation Taster		=65/35	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs5770; hg19: chr7-139657522;