rs1057518838
Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PM1PM2PP3_StrongPP5_Very_Strong
The NM_000212.3(ITGB3):c.749A>G(p.Asp250Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D250H) has been classified as Uncertain significance.
Frequency
Consequence
NM_000212.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 16 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ITGB3 | NM_000212.3 | c.749A>G | p.Asp250Gly | missense_variant | 5/15 | ENST00000559488.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ITGB3 | ENST00000559488.7 | c.749A>G | p.Asp250Gly | missense_variant | 5/15 | 1 | NM_000212.3 | P1 | |
ITGB3 | ENST00000571680.1 | c.749A>G | p.Asp250Gly | missense_variant | 5/9 | 1 | |||
ITGB3 | ENST00000696963.1 | c.749A>G | p.Asp250Gly | missense_variant | 5/14 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD4 exome Cov.: 32
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
Glanzmann thrombasthenia Pathogenic:1
Likely pathogenic, reviewed by expert panel | curation | ClinGen Platelet Disorders Variant Curation Expert Panel, ClinGen | Apr 06, 2023 | The c.749A>G variant in ITGB3 is a missense variant predicted to cause substitution of aspartic acid by glycine at amino acid 250. The variant has been reported in at least one patient (Glanzmann Patient, "HEMOSTAZA SKOZI KLINIČNE PRIMERE" August 2022) who displayed mucocutaneous bleeding and impaired aggregation with all agonists except ristocetin, which is highly specific for Glanzmann thrombasthenia (PP4_moderate). This individual is compound heterozygous for this variant and pathogenic variant c.1699C>T (p.Gln567Ter) (PM3). The variant is absent from gnomAD (PM2_supporting). The computational predictor REVEL gives a score of 0.988, which is above the ClinGen PD VCEP PP3 threshold of >0.7 and predicts a damaging effect on ITGB3 function. In summary, this variant meets the criteria to be classified as likely pathogenic for autosomal recessive Glanzmann Thrombasthenia based on the ACMG/AMP criteria applied, as specified by the ClinGen PD VCEP: PM2_Supporting, PP3, PP4_moderate, and PM3. (VCEP specifications version 2) - |
Prolonged bleeding time;C1458140:Abnormal bleeding Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Centre for Mendelian Genomics, University Medical Centre Ljubljana | Nov 06, 2015 | - - |
Platelet-type bleeding disorder 16 Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Centre for Mendelian Genomics, University Medical Centre Ljubljana | Jan 01, 2016 | This variant was classified as: Likely pathogenic. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at