A Study to Assess the Efficacy, Safety and Tolerability of Rozanolixizumab in Subjects With Chronic Inflammatory Demyelinating Polyradiculoneuropathy

Inclusion Criteria: * Subject is ≥ 18 years of age with a minimum body weight of ≥42 kg at Visit 1 (Screening) * Subject has a documented definite or probable diagnosis of Chronic Inflammatory Demyelinating Polyradiculoneuropathy (CIDP) according to the European Federation of Neurological Societies (EFNS)/ Peripheral Nerve Society (PNS) criteria 2010 * Subject has an immunoglobulin-dependency confirmed by clinical examination during therapy or upon interruption or reduction of therapy within 18 months prior to Screening and documented in medical history * Subject is on a stable dosage (not more than ±20% deviation) for subcutaneous immunoglobulin (SCIg) or intravenous immunoglobulin (IVIg) and a fixed interval for at least 4 months of either treatment * Female subjects of childbearing potential must agree to use a highly effective method of birth control, during the study and for a period of 3 months after their final dose of investigational medicinal product (IMP) * Male subjects with a partner of childbearing potential must be willing to use a condom when sexually active during the study and for 3 months after the final administration of IMP Exclusion Criteria: * Previously received treatment in this study or subject has previously been exposed to rozanolixizumab * Current diagnosis or has a history of Type 1 or Type 2 diabetes mellitus and/or hemoglobin A1c level \>6.0 % * Known immunoglobulin M (IgM)-mediated neuropathy * Clinical or known evidence of associated systemic diseases that might cause neuropathy or treatment with agents that might lead to neuropathy * History of clinically relevant ongoing chronic infections * Family history of primary immunodeficiency * Received a live vaccination within 8 weeks prior to the Baseline Visit; or intends to have a live vaccination during the course of the study or within 7 weeks following the final dose of IMP * Received any experimental biological agent within or outside of a clinical study in the past 3 months or within 5 half-lives prior to Baseline * Prior treatment with rituximab, ofatumumab, or ocrelizumab in the 6 months prior to the Baseline Visit or subject has had prior treatment with rituximab, ofatumumab, or ocrelizumab in the 12 months prior to Baseline and B cells are not within the normal range * Female subject who is pregnant or lactating