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A new tumor suppressor gene , PTEN / MMAC1 , was isolated recently at this region of chromosome 10q23 and found to be inactivated by mutation in three prostate cancer cell lines .
 Disease: tumor; Disease: prostate cancer
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 Disease: tumor; Disease: prostate cancer