4255
Our findings suggest that in some patients , Pelizaeus - Merzbacher disease is caused by overexpression of PLP gene transcripts , and that in these families a 50 % increase of DM20 messenger RNA in females , relative to the increase in affected males , can identify a female carrier . .
 Disease: Pelizaeus - Merzbacher disease
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
 Entities: Pelizaeus - Merzbacher disease 
Answer:
 Disease: Pelizaeus - Merzbacher disease