4877
Myotonic dystrophy ( DM ) is caused by abnormal expansion of a polymorphic ( CTG ) n repeat , located in the DM protein kinase gene .
 Myotonic dystrophy, DM, DM
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 Myotonic dystrophy, DM, DM