GP2013 in Japanese Patients With CD20 Positive Low Tumor Burden Indolent B-cell Non-Hodgkin's Lymphoma

Inclusion Criteria: * Patient with CD20 positive low tumor burden indolent B-cell non- Hodgkin's lymphoma. * Patient with at least one measurable lesion. * Patient with ECOG performance status 0 or 1. Exclusion Criteria: * Patient who has received radiotherapy within the last 28 days prior to administration, or are not recovered from previous radiotherapy. * Patient who has received immunotherapy, chemotherapy, antibodies and experimental treatment within the last 28 days prior to administration, or are not recovered from previous therapy. * Patient who has mAb therapy other than rituximab as prior line of therapy. * Patient with evidence of any uncontrolled, acute or chronic active infection (viral, bacterial or fungal). * Patient with any other malignancy within 5 years prior to date of screening, with the exception of adequately treated in situ carcinoma of the cervix uteri, basal or squamous cell carcinoma or nonmelanomatous skin cancer. Other protocol-defined inclusion/exclusion criteria may apply.