Renal AL Amyloid Involvement and NEOD001

This is a multicenter, Phase 2b, randomized, double-blind, placebo-controlled, two-arm, parallel-group efficacy and safety study of NEOD001 as a single agent administered intravenously in adults with AL amyloidosis who have a maintained hematologic response to their most recent treatment for AL amyloidosis (e.g., chemotherapy, autologous stem cell transplant \[SCT\]) and have persistent renal dysfunction. Subject screening will occur during the 28 days prior to the first administration of study drug (i.e. month 1 day 1). If screening assessments are completed and all eligibility requirements are met, the subject will be enrolled. Study visits will occur every 28 days based on scheduling from month 1 day 1. A ±5-day window is allowed for visits starting after month 1. Subjects may receive up to 12 infusions of study drug. Subjects who discontinue study drug before the initial End of Study (EOS) visit should have an Early Treatment Discontinuation (ETD) Visit 30 (±5) days after their final administration of study drug. After completing 12 months of treatment and the confirmatory EOS visit, a subject may enter an open-label extension (OLE) study, during which subjects will receive active treatment with NEOD001 for 12 months and may receive concurrent chemotherapy.