1979
Our results indicate that carriers of APC ( AS9 ) develop fewer colorectal tumors than do typical patients with FAP because somatic inactivation of both APC alleles is necessary for colorectal tumorigenesis .
 colorectal tumors, FAP, APC
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 colorectal tumors, FAP, APC