868
This indicates that there is a heavy ascertainment bias in the selection of patients for PAX6 mutation analysis and that the missing PAX6 missense mutations frequently may underlie phenotypes distinct from textbook aniridia .
 Disease: aniridia
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 Disease: aniridia