3819
These data suggested that mutant PS1 may cause disease as a result of reduction in PS1 function .
 GENE: mutant PS1; GENE: PS1
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: mutant PS1; GENE: PS1