915
Interestingly , the Arg72Pro SNP in TP53 , the gene encoding tumor suppressor p53 , was recently revealed a biomarker of poor prognosis in stroke due to its ability to modulate neuronal apoptotic death .
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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:
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