The Impact of Rituximab in Patients With Primary Breast Diffuse Large B Cell Lymphoma (DLBCL)
The purpose of this study is to investigate the impact of rituximab in primary breast DLBCL using a matched pair analysis following strict matching criteria in patients with primary breast and nodal DLBCL treated with rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) regimen.
Lymphoma, Large B-Cell, Diffuse
|Study Design:||Observational Model: Case Control
Time Perspective: Cross-Sectional
|Official Title:||Matched Pair Analysis Comparing the Outcomes of Primary Breast and Nodal Diffuse Large B Cell Lymphoma in Patients Treated With R-CHOP; Consortium for Improving Survival of Lymphoma (CISL) Study|
- Overall Survival [ Time Frame: 3 year ] [ Designated as safety issue: No ]
- Progression-free survival [ Time Frame: 3 year ] [ Designated as safety issue: No ]
|Study Start Date:||February 2010|
|Study Completion Date:||June 2011|
|Primary Completion Date:||May 2011 (Final data collection date for primary outcome measure)|
Primary breast DLBCL
Primary breast DLBCL was defined as that involving single extranodal organ (i.e. breast) regardless of the status of nodal disease.
The disease was only limited to the lymph nodes or lymphoid organs without extranodal organ involvements.
Primary breast lymphoma represents 1.7% to 2.2% of all extranodal non-Hodgkin's lymphoma. Histologically, the diffuse large B cell lymphoma (DLBCL) is the most predominant subtype of PBL. Previous studies in the pre-rituximab era have identified the worse outcomes in primary breast DLBCL compared with nodal DLBCL. Few clinical studies have been reported for investigating the efficacy of rituximab in patients with primary breast DLBCL. For clarifying this, a large randomized trial comparing survival in patients with primary breast DLBCL is required. However, the rarity of primary breast DLBCL makes large trial virtually difficult in single center or study group. Additionally, retrospective studies for evaluating the role of rituximab in primary breast DLBCL had bias according to the difference of treatment period between CHOP and R-CHOP era. Thus, in attempt to clarify the impact of rituximab on survival and patterns of progression in patients with primary breast DLBCL, the investigators performed this matched pair analysis following strict matching criteria in patients with primary breast DLBCL, who were identified from our previous nation-wide survey, and nodal DLBCL, who were selected from the data registry of Korean Society of Hematology Lymphoma Working Party, treated with R-CHOP regimen.
|Korea, Republic of|
|Chonbuk National University Hospital|
|Jeonju, Korea, Republic of, 561-712|
|Principal Investigator:||Jae-Yong Kwak, MD.,PhD.||Chonbuk National University Hospital|