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Ref Type | Journal Article | ||||||||||||
PMID | (30268485) | ||||||||||||
Authors | Klempner SJ, Gowen K, Lee TK, Zhu VW, Schrock AB, Miller VA, Ali SM, Ou SI | ||||||||||||
Title | Carving out another slice of the pie: Exceptional response to single agent imatinib in an asian female never-smoker with advanced NSCLC with a de-novo PDGFR-α N848 K mutation. | ||||||||||||
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Abstract Text | Non-small cell lung cancer (NSCLC) has emerged as a paradigm for clinical application of precision medicine as optimal therapy is commonly chosen based on genomic biomarkers identified in a patient's tumor sample. Recurrent driver alterations are well described, however, a need to continually identify rare variants remains clinically relevant. We identified an incident case of advanced NSCLC with a PDGFR-α N848 K activation loop mutation with no other concurrent oncogenic drivers. Amino acid sequence alignment confirmed homology to the imatinib-sensitive KIT N822 K activation loop mutation observed in GIST. The patient achieved a 2-year response to single agent imatinib that is ongoing. While PDGFR-α N848 K is rare among public sequencing databases our cases strongly suggests functional relevance and highlights the importance of studying rare variants in NSCLC. |
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