chr7-139875585-G-T
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3
The NM_001061.7(TBXAS1):c.184G>T(p.Gly62Cys) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000186 in 1,613,892 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )
Consequence
TBXAS1
NM_001061.7 missense, splice_region
NM_001061.7 missense, splice_region
Scores
4
10
4
Splicing: ADA: 0.9980
2
Clinical Significance
Conservation
PhyloP100: 5.68
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]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 3 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. Scorers claiming Uncertain: max_spliceai. No scorers claiming Benign.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TBXAS1 | NM_001061.7 | c.184G>T | p.Gly62Cys | missense_variant, splice_region_variant | 3/13 | ENST00000448866.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TBXAS1 | ENST00000448866.7 | c.184G>T | p.Gly62Cys | missense_variant, splice_region_variant | 3/13 | 1 | NM_001061.7 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00000658 AC: 1AN: 152076Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251378Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135860
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GnomAD4 exome AF: 0.00000137 AC: 2AN: 1461816Hom.: 0 Cov.: 30 AF XY: 0.00000275 AC XY: 2AN XY: 727216
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Oct 13, 2022 | This sequence change replaces glycine, which is neutral and non-polar, with cysteine, which is neutral and slightly polar, at codon 63 of the TBXAS1 protein (p.Gly63Cys). This variant is present in population databases (no rsID available, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with TBXAS1-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Uncertain
D
BayesDel_noAF
Uncertain
Cadd
Pathogenic
Dann
Uncertain
DEOGEN2
Benign
T;.;.;.;T;T;.
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;.;.;D;D;.;D
M_CAP
Benign
D
MetaRNN
Pathogenic
D;D;D;D;D;D;D
MetaSVM
Benign
T
MutationTaster
Benign
D;D;D;D;D;D;D;D;D;D;D
PrimateAI
Uncertain
T
PROVEAN
Pathogenic
D;.;.;.;.;.;.
REVEL
Uncertain
Sift
Pathogenic
D;.;.;.;.;.;.
Sift4G
Uncertain
D;.;.;.;.;.;.
Polyphen
0.96, 1.0
.;.;D;D;D;.;.
Vest4
MVP
MPC
ClinPred
D
GERP RS
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
dbscSNV1_RF
Pathogenic
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_AL_spliceai
Position offset: 0
Find out detailed SpliceAI scores and Pangolin per-transcript scores at