8144
We found that multiple tumor suppressor genes ( e . g . , p53 , DCC , APC , MCC , BRCA1 , and WAF1 / CIP1 ) were inactivated at different frequencies via various mechanisms [ e . g . , loss of heterozygosity ( LOH ) , loss of expression ( LOE ) , mutation , and inactivation by cellular binding protein ] .
 p53, DCC, APC, MCC, BRCA1, WAF1, CIP1
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 p53, DCC, APC, MCC, BRCA1, WAF1, CIP1