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Collectively , this study emphasizes a critical role of Phox2a as well as its functional synergism with other transcription factors ( e . g . , CREB , AP2 , and Sp1 ) in transcriptional activation of the DBH gene .
 GENE: Phox2a; GENE: CREB; GENE: AP2; GENE: Sp1; GENE: DBH gene
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: Phox2a; GENE: CREB; GENE: AP2; GENE: Sp1; GENE: DBH gene