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Of 51 ATM mutations identified in families native to the British Isles , 11 were founder mutations , and 2 of these 11 conferred a milder clinical phenotype with respect to both cerebellar degeneration and cellular features .
 Disease: cerebellar degeneration
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: cerebellar degeneration