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A second , recently identified familial breast cancer gene , BRCA2 ( refs 5 - 8 ) , accounts for a proportion of breast cancer roughly equal to BRCA1 .
 Disease: familial breast cancer; Disease: breast cancer
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: familial breast cancer; Disease: breast cancer