Predictors of Acquired <i>T790M</i> Mutation in Patients Failing First- or Second-Generation <i>Epidermal Growth Factor Receptor</i>-Tyrosine Kinase Inhibitors.

19 – 21 , 25 The present study too showed a trend favoring acquired T790M mutation among patients with initial sensitizing EGFR exon 19 deletion compared to those with EGFR exon 21 L858R point mutation.

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