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Genetic epidemiological evidence suggests that mutations in BRCA1 may be responsible for approximately one half of early onset familial breast cancer and the majority of familial breast / ovarian cancer .
 familial breast cancer, familial breast / ovarian cancer
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 familial breast cancer, familial breast / ovarian cancer