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The early growth response 2 gene ( EGR2 ) is a Cys2His2zinc finger transcription factor which is thought to play a role in the regulation of peripheral nervous system myelination .
 None
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:  
Answer:
 None