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Proteolipoprotein gene analysis in 82 patients with sporadic Pelizaeus - Merzbacher Disease : duplications , the major cause of the disease , originate more frequently in male germ cells , but point mutations do not .
 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