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Oncogenic mutations in PIK3CA , which encodes the phosphoinositide - 3 - kinase ( PI3K ) catalytic subunit p110 alpha , occur in ~ 25 % of human breast cancers .
 Chemical: phosphoinositide
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: phosphoinositide