rs587778598
Variant summary
Our verdict is Likely benign. The variant received -3 ACMG points: 1P and 4B. PP3BS2
The NM_006206.6(PDGFRA):c.2936G>A(p.Arg979His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000409 in 1,611,930 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R979C) has been classified as Uncertain significance.
Frequency
Consequence
NM_006206.6 missense
Scores
Clinical Significance
Conservation
Publications
- gastrointestinal stromal tumorInheritance: AD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)
- polyps, multiple and recurrent inflammatory fibroid, gastrointestinalInheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Genomics England PanelApp, Ambry Genetics, G2P
- congenital heart diseaseInheritance: AD Classification: LIMITED Submitted by: ClinGen
- isolated cleft palateInheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
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ACMG classification
Our verdict: Likely_benign. The variant received -3 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| PDGFRA | ENST00000257290.10 | c.2936G>A | p.Arg979His | missense_variant | Exon 22 of 23 | 1 | NM_006206.6 | ENSP00000257290.5 | ||
| ENSG00000282278 | ENST00000507166.5 | c.2216G>A | p.Arg739His | missense_variant | Exon 23 of 24 | 2 | ENSP00000423325.1 |
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152244Hom.: 0 Cov.: 33 show subpopulations
GnomAD2 exomes AF: 0.0000318 AC: 8AN: 251302 AF XY: 0.0000368 show subpopulations
GnomAD4 exome AF: 0.0000432 AC: 63AN: 1459686Hom.: 0 Cov.: 31 AF XY: 0.0000386 AC XY: 28AN XY: 726296 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152244Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2AN XY: 74376 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Idiopathic hypereosinophilic syndrome;C5193005:Polyps, multiple and recurrent inflammatory fibroid, gastrointestinal Uncertain:1
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Polyps, multiple and recurrent inflammatory fibroid, gastrointestinal Uncertain:1
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PDGFRA-related disorder Uncertain:1
The PDGFRA c.2936G>A variant is predicted to result in the amino acid substitution p.Arg979His. This variant has been reported in an individual from a healthy, ancestrally diverse genome sequencing cohort (Table S1, Bodian et al. 2014. PubMed ID: 24728327). This variant is reported in 0.0053% of alleles in individuals of European (Non-Finnish) descent in gnomAD (http://gnomad.broadinstitute.org/variant/4-55156535-G-A). It has conflicting interpretations of likely benign and uncertain significance in ClinVar (https://preview.ncbi.nlm.nih.gov/clinvar/variation/135020/). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -
not provided Uncertain:1
In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Observed in healthy individuals undergoing whole genome sequencing (PMID: 24728327); This variant is associated with the following publications: (PMID: 24728327) -
Gastrointestinal stromal tumor Uncertain:1
This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 979 of the PDGFRA protein (p.Arg979His). This variant is present in population databases (rs587778598, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with PDGFRA-related conditions. ClinVar contains an entry for this variant (Variation ID: 135020). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt PDGFRA protein function with a negative predictive value of 80%. 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. -
Hereditary cancer-predisposing syndrome Benign:1
This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
not specified Other:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at