9067
Transfection and in vitro binding studies identified within HEFT1 a promoter whose basal activity required a GC box activated by Sp1 or Sp3 .
 HEFT1 a promoter, Sp1, Sp3
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 HEFT1 a promoter, Sp1, Sp3