4283
Three novel mutations were identified a C - T substitution in exon 5 , and a G - T substitution and single cytosine deletion in exon 6 , confirming the existence of extensive allelic heterogeneity in this condition .
 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