Annotation Detail

Information
Associated Genes
PDGFRA
Associated Variants
PDGFRA p.Ile843del (p.I843del), ENSG00000282278 p.Ile603del (p.I603del) ( ENST00000257290.10 )
PDGFRA p.Ile843del (p.I843del), ENSG00000282278 p.Ile603del (p.I603del) ( ENST00000257290.10 )
Associated Disease
gastrointestinal stromal tumor
Source Database
CIViC Evidence
Description
15/127 patients with KIT-WT metastatic gastrointestinal stromal tumors were tested for PDGFRA mutations. 6 GISTs harbored PDGFRA mutations. 1 patient had a deletion of I843. CHO cells expressing this variant showed similar sensitivity to imatinib as cells expressing wildtype PDGFRA. 2/3 patients with a mutation determined to be sensitive in vitro achieved partial response on imatinib treatment. It is not noted whether the patient whose GISTs harbored I843del had partial response or progressive disease.
Variant Origin
somatic
Variant Origin
Somatic
Evidence URL
https://civic.genome.wustl.edu/links/evidence_items/1309
Gene URL
https://civic.genome.wustl.edu/links/genes/38
Variant URL
https://civic.genome.wustl.edu/links/variants/101
Rating
2
Evidence Type
Predictive
Disease
Gastrointestinal Stromal Tumor
Evidence Direction
Supports
Drug
Imatinib
Evidence Level
D
Clinical Significance
Sensitivity/Response
Pubmed
14645423
Drugs
Drug NameSensitivitySupported
ImatinibSensitivitytrue