3757
Classical Phenylketonuria ( PKU ) is an autosomal recessive human genetic disorder caused by a deficiency of hepatic phenylalanine hydroxylase ( PAH ) .
 Classical Phenylketonuria, PKU, autosomal recessive human genetic disorder, deficiency of hepatic phenylalanine hydroxylase
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 Classical Phenylketonuria, PKU, autosomal recessive human genetic disorder, deficiency of hepatic phenylalanine hydroxylase