700
We report a G - - > A transition at nucleotide 431 of the proteolipid protein gene ( PLP ) results in a nonsense codon in a family with an unusual form of Pelizaeus - Merzbacher disease ( PMD ) .
 Disease: Pelizaeus - Merzbacher disease; Disease: PMD
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: Pelizaeus - Merzbacher disease; Disease: PMD