Deep mutational scanning reveals EGFR mutations conferring resistance to the 4th-generation EGFR tyrosine kinase inhibitor BLU-945

Abstract excerpt

Fourth-generation EGFR tyrosine kinase are in development to overcome common resistance mutations. We performed deep mutational scanning (DMS) of the EGFR kinase domain in the context of L858R by introducing a saturation library of ~17,000 variants into Ba/F3 cells. DMS library-expressing cells were exposed to osimertinib or BLU-945 to identify escape mutations. L718X mutations were enriched across all...

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