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The increased specificity and predictive value of the DNA - based test make it a useful adjunct to the diagnostic tests currently used to screen for carriers of Tay - Sachs disease .
 Tay - Sachs disease
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 Tay - Sachs disease