A Phase 1b Open-Label Study Investigating the Safety and Pharmacokinetics of Administration of Subcutaneous Blinatumomab for the Treatment of Relapsed/Refractory Indolent Non-Hodgkin's Lymphoma

Primary Objective: • To evaluate the safety and tolerability of subcutaneous (SC) blinatumomab dose administrations Secondary Objectives: * To determine pharmacokinetics (PK) with continuous intravenous (cIV) and SC administrations * To estimate the maximum tolerated dose (MTD) tested for blinatumomab administered subcutaneously * To determine the incidence of anti-blinatumomab antibody formation following SC administration * To evaluate efficacy response following treatment with SC blinatumomab administration Exploratory Objective: * To determine the pharmacodynamics (PD) time profiles for B-and T-lymphocytes as well as cytokine profiles during SC administration * To evaluate efficacy response following treatment with SC blinatumomab administration using Lugano criteria if positron emission tomography-computed tomography (PET/CT) is used for evaluation