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Association details:
| Biomarker: | PDGFRA RD841_842KI |
|---|---|
| Cancer: | Gastric Cancer |
| Drug: | imatinib (c-KIT inhibitor, Bcr-abl tyrosine kinase inhibitor, PDGFR inhibitor) |
| Direction: | Resistant |
Evidence:
Source:
Title:
PDGFRA Mutations in Gastrointestinal Stromal Tumors: Frequency, Spectrum and In Vitro Sensitivity to Imatinib
Excerpt:
Transient expression of representative PDGFRA isoforms in CHO cells revealed imatinib sensitivity of exon 12 mutations (SPDHE566-571R and insertion ER561-562) and an exon 14 substitution (N659K). However, most isoforms with a substitution involving codon D842 in exon 18 (D842V, RD841-842KI, DI842-843IM) were resistant to the drug, with the exception of D842Y. Interestingly, other mutations in exon 18 (D846Y, N848K, Y849K and HDSN845-848P) were all imatinib sensitive.
DOI:
10.1200/JCO.2005.14.068
