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Because some triple - negative breast cancers ( TNBCs ) frequently overexpress EGFR , the antitumor activity of lapatinib in such diseases was also tested .
 Chemical: lapatinib
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: lapatinib