Exhibit 1
JOINT FILING AGREEMENT
The undersigned hereby agree that the Statement on Schedule 13G, dated November 1, 2010, with respect to the shares of OncoGenex Pharmaceuticals, Inc.’s Common Stock, par value $0.001 per share, is, and any amendments thereto executed by each of us shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, and that this Agreement shall be included as an Exhibit to the Schedule 13G and each such amendment. Each of the undersigned agrees to be responsible for the timely filing of the Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information concerning itself contained therein. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.
IN WITNESS WHEREOF, the undersigned have executed this Agreement as of the 1st day of November, 2010.
             
    BOXER CAPITAL, LLC    
 
           
 
  By:   /s/ Aaron Davis    
         
 
  Name:   Aaron Davis    
 
  Title:   Authorized Signatory    
 
           
    BOXER ASSET MANAGEMENT INC.    
 
           
 
  By:   /s/ Jefferson R. Voss    
         
 
  Name:   Jefferson R. Voss    
 
  Title:   Director    
 
           
    MVA INVESTORS, LLC    
 
           
 
  By:   /s/ Neil Reisman    
         
 
  Name:   Neil Reisman    
 
  Title:   Authorized Signatory    
 
           
    AARON DAVIS    
 
           
 
  By:   /s/ Aaron Davis    
         
 
      Aaron Davis, Individually    
 
           
    NEIL REISMAN    
 
           
 
  By:   /s/ Neil Reisman    
         
 
      Neil Reisman, Individually    

 

 


 

             
    IVAN LIEBERBURG    
 
           
 
  By:   /s/ Ivan Lieberburg    
         
 
      Ivan Lieberburg, Individually    
 
           
    CHRISTOPHER FUGLESANG    
 
           
 
  By:   /s/ Christopher Fuglesang    
         
 
      Christopher Fuglesang, Individually    
 
           
    JOSEPH LEWIS    
 
           
 
  By:   /s/ Joseph Lewis    
         
 
      Joseph Lewis, Individually