To determine the expression profile of YAP1 in primary lung tumors, we performed IHC with YAP1 staining using tissue microarrays constructed from 124 well-annotated NSCLC tumor tissues (derived from stage I to III non-small cell lung cancer specimens from patients undergoing lung cancer resection between 2010 and 2012). The gene discussed is YAP1; the disease is lung carcinoma.