4821
Taking advantage of the illegitimate transcription of the phenylalanine hydroxylase ( PAH ) gene , we have been able to analyse the PAH cDNA sequence of hyperphenylalaninemic children in circulating lymphocytes .
 hyperphenylalaninemic
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 hyperphenylalaninemic