3774
The E2A-HLF (for hepatic leukaemia factor) fusion gene , formed by action of the t(17;19) (q22;p13) chromosomal translocation , drives the leukaemic transformation of early B-cell precursors , but the mechanism of this activity remains unknown.
 ( DNA: t(17;19) (q22;p13), None) , ( cell type: B-cell precursors, None) , ( protein: E2A-HLF, None) , ( DNA: E2A-HLF (for hepatic leukaemia factor) fusion gene, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: t(17;19) (q22;p13), None) , ( cell type: B-cell precursors, None) , ( protein: E2A-HLF, None) , ( DNA: E2A-HLF (for hepatic leukaemia factor) fusion gene, None) 