Fig. 4From: Clinical outcomes of advanced non-small cell lung cancer patients harboring distinct subtypes of EGFR mutations and receiving first-line tyrosine kinase inhibitors: brain metastasis and de novo T790M mattersIntracranial time to progression (iTTP) stratified by EGFR mutation subtypes. iTTP of patients with uncommon mutations and those with 19del (A) and those with L858R(B), before PSM; iTTP of patients with uncommon mutations and those with 19del (C) and those with L858R(D), after PSMBack to article page