988
However , the widespread use of BRCA1 testing has been limited to date by three principal concerns the fear of loss of health and life insurance , the uncertain clinical value of a positive test result , and the current lack of an inexpensive and sensitive screening test for BRCA1 mutations .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 None