ACE1831 in Adult Subjects With Relapsed/ Refractory CD20-expressing B-cell Malignancies

Key Inclusion Criteria: * CD20-positive B-cell NHL that is persistent or progressive after having received at least 2 prior systemic therapies per NCCN guidelines * At least 1 measurable lesion according to the revised International Working Group (IWG) Response Criteria for Malignant Lymphoma * Eastern Cooperative Oncology Group (ECOG) Performance Status 0-1 or subjects with ECOG scores of 2 with a serum albumin of \>3.5 * Adequate hematologic and renal, hepatic, and cardiac function * Oxygen saturation via pulse oxygenation ≥ 92% at rest on room air Key Exclusion Criteria: * Prior treatment with a genetically modified cell therapy product targeting CD20 * Autologous stem cell transplant within 6 weeks of informed consent or history of allogeneic stem cell transplantation * History of central nervous system (CNS) lymphoma or primary CNS lymphoma * History or presence of clinically relevant CNS disorder (e.g. epilepsy) * Clinically significant active infection * Currently active, clinically significant cardiovascular disease * Human Immunodeficiency virus (HIV) infection (however, subjects on anti-retroviral therapy for at least 4 weeks and with HIV viral loads of \<400 copies/mL are eligible), active hepatitis B infection, or hepatitis C infection * History of other malignancies with the exception of certain treated malignancies with no evidence of disease * Primary immunodeficiency disorder * Pregnant or lactating female * Any medical, psychological, familial, or sociolog…