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Very long chain acyl - CoA dehydrogenase ( VLCAD ) deficiency is a life - threatening disorder of mitochondrial fatty acid beta - oxidation .
 Very long chain acyl - CoA dehydrogenase ( VLCAD ) deficiency
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 Very long chain acyl - CoA dehydrogenase ( VLCAD ) deficiency