1923
INTRODUCTION: Although gefitinib used for the treatment of non-small-cell lung cancer is a well-known cause of interstitial lung disease (ILD), few case reports on erlotinib-induced ILD have been issued.
 ( adverse event: cause ,  interstitial lung disease (ILD): Effect, gefitinib: Treatment, non-small-cell lung cancer: Treatment.Disorder, gefitinib: Treatment.Drug) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: adverse event,potential therapeutic event, Arguments type: Treatment.Disorder,Treatment.Time_elapsed,Treatment.Dosage,Subject.Race,Treatment.Drug,Treatment.Route,Subject.Disorder,Treatment.Freq,Treatment,Effect,Subject.Population,Treatment.Duration,Combination.Drug,Subject,Subject.Age,Subject.Gender. 
Text: {0} 
Answer:
 ( adverse event: cause ,  interstitial lung disease (ILD): Effect, gefitinib: Treatment, non-small-cell lung cancer: Treatment.Disorder, gefitinib: Treatment.Drug) 