21790
Additionally , IL - 1 inhibitors may also help patients with polyarticular and tophaceous gout by making them less vulnerable to breakthrough attacks during initiation of chronic urate - lowering treatment , the mainstay of gout therapy .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None