The Impact of Rituximab in Patients With Primary Breast Diffuse Large B Cell Lymphoma (DLBCL)

Chonbuk National University

Status: Completed

Conditions: Lymphoma, Large B-Cell, Diffuse

Study type: Observational

Funder types: Other

Identifiers

NCT01266668

Chonbuk 011

Details and patient eligibility

About

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.

Full description

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.

Enrollment: 100 patients

Sex: All

Ages: 20 to 85 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Stage I or II of primary breast DLBCL treated with R-CHOP
• Stage I or II of nodal DLBCL treated with R-CHOP

Definition of primary breast DLBCL - Isolated breast involvement with or without nodal disease, which include distant nodal disease as well as regional nodal disease

Definition of nodal DLBCL

• The disease was only limited to the lymph nodes or lymphoid organs

Exclusion criteria

• Primary breast DLBCL or nodal DLBCL treated without rituximab
• Secondary breast DLBCL
• Recurrent DLBCL
• Stage III or IV of nodal DLBCL with extranodal involvement as a dissemination process

Trial design

100 participants in 2 patient groups

Primary breast DLBCL

Description:

Primary breast DLBCL was defined as that involving single extranodal organ (i.e. breast) regardless of the status of nodal disease.

Nodal DLBCL

Description:

The disease was only limited to the lymph nodes or lymphoid organs without extranodal organ involvements.