HCV associated NHL VS HCV associated LPL

I need help in conducting a cross examination of HCV associated Non-Hodgkins Lymphoma and HCV associated Lymphoplasmacytic Lymphoma. As far as my research has taken me I have discoverd that for an unknown reason HCV associated NHL has a higher response to Anti-Viral Treatment (Interferon) than HCV associated LPL. Thus far the two points of commonality I have established are the HCV protein and the rearangement of of the PAX-5 Gene as is common among plasma diffuse lymphomas. My knowledge of the PAX-5 gene is limited to it's function of encoding B-Cell specific Activator Protein (S). I am attempting to use this line of inquiry as an attempt to isolate the key factor which causes the anti-viral treatment of Hep-c to attack the lymphoma, with luck there may be the chance that the key factor (My line of thinking makes me believe that it's a protein or combonation there of) could be synthetically reproduced and grafted into the cancerous B-cell lymphocytes as a stop-gap to slow the lymphoma. Any help would be very much appreciated.