<qa>  What is the name of the chemotherapy regimen that is used in treating non-HodgkinThis study will examine the safety and effectiveness of an experimental drug called Bortezomib PS-341, given alone and in combination with a chemotherapy regimen called Etoposide, Prednisone, Vincristine, Cyclophosphamide, Doxorubicin and Filgrastim EPOCH, in treating non-Hodgkins B-cell lymphoma. In the laboratory, PS-341 kills lymphoma cells and makes them more sensitive to chemotherapy. The EPOCH treatment regimen includes the drugs doxorubicin, etoposide, vincristine, cyclophosphamide, prednisone, and filgrastim. 