Choong NW et al. (2006) Gefitinib response of erlotinib-refractory lung cancer involving meninges—role ofEGFR Mutation Nat Clin Pract Oncol 3: 50–57 doi:10.1038/ncponc0400

Figure 4 EGFR mutations and differential effects on the sensitivity of the receptor towards inhibition by erlotinib and gefitinib