Genetic Variant TBXA2R:p.Val241Glu (chr19-3599913-A-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_001060.6(TBXA2R):c.722T>A(p.Val241Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000716 in 1,397,440 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V241G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

TBXA2R
NM_001060.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.21

Publications

0 publications found

Variant links:

Genes affected

TBXA2R (HGNC:11608): (thromboxane A2 receptor) This gene encodes a member of the G protein-coupled receptor family. The protein interacts with thromboxane A2 to induce platelet aggregation and regulate hemostasis. A mutation in this gene results in a bleeding disorder. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]

TBXA2R Gene-Disease associations (from GenCC):

qualitative platelet defect
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
bleeding diathesis due to thromboxane synthesis deficiency
Inheritance: Unknown, AD Classification: MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
schizophrenia
Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)

TBXA2R links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.848

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TBXA2R	NM_001060.6 link	c.722T>A	p.Val241Glu	missense_variant	Exon 2 of 3	ENST00000375190.10	NP_001051.1	P21731-3Q05C92Q0VAB0
TBXA2R	NM_201636.3 link	c.722T>A	p.Val241Glu	missense_variant	Exon 2 of 4		NP_963998.2	P21731-2Q05C92Q0VAB0
TBXA2R	XM_011528214.3 link	c.722T>A	p.Val241Glu	missense_variant	Exon 3 of 4		XP_011526516.1	P21731-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TBXA2R	ENST00000375190.10 link	c.722T>A	p.Val241Glu	missense_variant	Exon 2 of 3	1	NM_001060.6	ENSP00000364336.4	P21731-3
TBXA2R	ENST00000589966.1 link	c.397+325T>A		intron_variant	Intron 1 of 1	1		ENSP00000468145.1	K7ER80
TBXA2R	ENST00000411851.3 link	c.722T>A	p.Val241Glu	missense_variant	Exon 2 of 4	2		ENSP00000393333.2	P21731-2
TBXA2R	ENST00000587717.1 link	n.221T>A		non_coding_transcript_exon_variant	Exon 1 of 2	3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.16e-7

AC:

AN:

1397440

Hom.:

Cov.:

AF XY:

0.00000145

AC XY:

AN XY:

689310

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31560

American (AMR)

AF:

0.00

AC:

AN:

35714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25184

East Asian (EAS)

AF:

0.00

AC:

AN:

35750

South Asian (SAS)

AF:

0.00

AC:

AN:

79202

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4388

European-Non Finnish (NFE)

AF:

9.27e-7

AC:

AN:

1079164

Other (OTH)

AF:

0.00

AC:

AN:

57850

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.47

BayesDel_addAF

Uncertain

0.13

BayesDel_noAF

Uncertain

-0.050

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.67

D;.

Eigen

Uncertain

0.58

Eigen_PC

Uncertain

0.52

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.84

T;T

M_CAP

Pathogenic

0.49

MetaRNN

Pathogenic

0.85

D;D

MetaSVM

Uncertain

0.036

MutationAssessor

Uncertain

2.5

M;M

PhyloP100

7.2

PrimateAI

Uncertain

0.56

PROVEAN

Uncertain

-4.0

D;D

REVEL

Pathogenic

0.67

Sift

Uncertain

0.0030

D;D

Sift4G

Uncertain

0.0030

D;D

Polyphen

1.0

D;.

Vest4

0.64

MutPred

0.49

Gain of disorder (P = 0.0033);Gain of disorder (P = 0.0033);

MVP

0.83

MPC

2.1

ClinPred

1.0

GERP RS

4.7

Varity_R

0.71

gMVP

0.88

Mutation Taster

=26/74

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over