3353
Pelizaeus - Merzbacher disease : an X - linked neurologic disorder of myelin metabolism with a novel mutation in the gene encoding proteolipid protein .
 Pelizaeus - Merzbacher disease, X - linked neurologic disorder of myelin metabolism
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 Pelizaeus - Merzbacher disease, X - linked neurologic disorder of myelin metabolism