442
In the Chinese samples analyzed , 187 C - - > G was present in association with a wide variety of HLA haplotypes , showing this mutation to be widespread and likely to predate the more genetically restricted 845 G - - > A mutation .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 None