5685
A recent sib-pair analysis revealed a tight linkage between markers on 5q31.1 and a major susceptibility gene controlling total serum IgE levels .
 ( protein: IgE, None) , ( DNA: 5q31.1, None) , ( DNA: major susceptibility 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:
 ( protein: IgE, None) , ( DNA: 5q31.1, None) , ( DNA: major susceptibility gene, None) 