2902
In all four patients , the only mutation identified was a single base substitution in exons 2 or 3 of the coding region , which in each case predicts a single amino acid substitution in the translated protein .
 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