A randomised,multi‐centre phase III study of 3 different doses of intravenous immunoglobulin 10% in patients with chronic inflammatory demyelinating polyradiculoneuropathy (ProCID trial): Study design and protocol |
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Authors: | David R. Cornblath Hans‐Peter Hartung Hans D. Katzberg Ingemar S. J. Merkies Pieter A. van Doorn |
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Affiliation: | 1. Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland;2. Department of Neurology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany;3. Department of Neurology, University of Toronto, Toronto General Hospital/UHN, Toronto, Ontario, Canada;4. Department of Neurology, Maastricht University Medical Center, Maastricht, The Netherlands;5. Department of Neurology, Erasmus University Medical Center, Rotterdam, The Netherlands |
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Abstract: | Patients with chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) show varying degrees of response to intravenous immunoglobulin (IVIg) therapy. This randomised phase III study in patients with CIDP (ProCID trial) will compare the efficacy and safety of 3 different doses (0.5, 1.0, and 2.0 g/kg) of IVIg 10% (panzyga) administered every 3 weeks for 24 weeks. The primary efficacy endpoint is the rate of treatment response, defined as a decrease in adjusted inflammatory neuropathy cause and treatment disability score of ≥1 point, in the IVIg 1.0 g/kg arm at week 24. Patients with definite or probable CIDP according to European Federation of Neurological Sciences/Peripheral Nerve Society criteria with IVIg or corticosteroid dependency and active disease are eligible. All potentially eligible patients will undergo IVIg or corticosteroid dose reduction (washout phase) over ≤12 weeks or until deterioration of CIDP (active disease). Patients with deterioration during the washout phase will be randomised to receive study treatment during a dose‐evaluation phase starting with a loading dose of IVIg 2.0 g/kg followed by maintenance treatment with IVIg 0.5, 1.0, or 2.0 g/kg every 3 weeks. Rescue medication (2 doses of IVIg 2.0 g/kg given 3 weeks apart) will be administered to patients in the IVIg 0.5 and 1.0 g/kg groups who deteriorate after week 3 and before week 18 or who do not improve at week 6. Safety, tolerability and quality of life will be assessed. The ProCID study will provide new information on the best maintenance dose of IVIg for patients with CIDP. |
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Keywords: | chronic inflammatory demyelinating polyradiculoneuropathy intravenous immunoglobulin randomised‐controlled trial study design trial protocol |
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