4239
Marked phenotypic heterogeneity associated with expansion of a CAG repeat sequence at the spinocerebellar ataxia 3 / Machado - Joseph disease locus .
 spinocerebellar ataxia 3 / Machado - Joseph disease
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 spinocerebellar ataxia 3 / Machado - Joseph disease