The researchers selected four NSCLC cell lines expressing different levels of NICD (intracellular domain of Notch) and EGFR protein levels and found that the cell lines exhibited different response to the γ‐secretase inhibitor DAPT (N‐[N‐(3,5‐difluorophenacetyl)‐l‐alanyl]‐S‐phenylglycine t‐butyl ester) and related this to EGFR status. The gene discussed is EGFR; the disease is non-small cell lung carcinoma.