Diffuse large B-cell lymphoma is a most prevalent non-Hodgkin's lymphoma. Recently the clinical results have been improved with new drugs and new modalities such as cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) every 2 weeks. Bortezomib is well known to be effective for multiple myeloma and has been being tried for other malignancies including lymphoma. The investigators will incorporate Bortezomib to CHOP every 2 weeks to further improve the clinical efficacy in diffuse large B-cell lymphoma.
Intended number of patients: 63 patients in total * Phase I: 9 patients for 3 levels * Phase II: 50 patients plus 3 patient from Phase I at MTD level * Plus 4 patients: considering 5% follow-up loss rate Study design and methodology: For phase I, 9 patients; 3 levels of bortezomib (1.0, 1.3 and 1.6 mg/m2), 3 patients at each dose level. If escalation of bortezomib beyond 1.0 mg/m2 is not possible, the trial will be stopped. For phase II, 53 patients (3 from phase I at MTD level); Reject when complete response rate equal or less than 12/19 or 37/53 by Simon two-stage optimal phase II design. Treatments: * Bortezomib: For phase I, 3 dose levels (1.0, 1.3 or 1.6 mg/m2), days 1 and 4, every 2 weeks. For phase II, suggested dose of Bortezomib through phase I, days 1 and 4, every 2 weeks. * CHOP2: cyclophosphamide 750mg/ m2 day 1, vincristine 1.4 mg/ m2 (max. 2 mg) day 1, doxorubicin 50 mg/ m2 day 1, prednisolone 100 mg days 1-5, every 2 weeks. * G-CSF: Lenograstim 5 microgram/kg subcutaneously days 4-13 every 2 weeks.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
49
Bortezomib: For phase I, 3 dose levels (1.0, 1.3 or 1.6 mg/m2), days 1 and 4, every 2 weeks. For phase II, suggested dose of Bortezomib through phase I, days 1 and 4, every 2 weeks.
cyclophosphamide 750mg/m2 day 1, every 2 weeks
doxorubicin 50 mg/m2 day 1, every 2 weeks
Asan Medical Center, University of Ulsan College of Medicine
Seoul, South Korea
Asan Medical Cener
Seoul, South Korea
Number of Patients Who Achieved Complete Response
All patients,9 patients of phase I study and 40 patietns in phase II stuay, were assessed with International Working Group response criteria assessed by CT; Complete Response (CR), Disappearance of all detectable clinical and radiographic evidence of disease and diappearance of all disease-related symptoms.
Time frame: 14 weeks
Number of Patients Who Experienced Adverse Events
Time frame: 6 months
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vincristine 1.4 mg/m2 (max. 2 mg) day 1, every 2 weeks
prednisolone 100 mg days 1-5, every 2 weeks
Lenograstim 5 microgram/kg subcutaneously days 4-13 every 2 weeks