This is an observations study evaluating safety and efficacy of immunoadsorption compared to plasma exchange in Guillain-Barré Syndrome.
Study Type
OBSERVATIONAL
Enrollment
20
1 cycle, consisting of 5 sessions on 5 consecutive days with processing of the 0.7-fold individual plasma volume (maximum 2.5 l) each days with tryptophan adsorbers.
1 cycle, consisting of 5 sessions on 5 consecutive days with exchange of 0.7-fold plasma volume (maximum 2.5 l) each day with albumin solution as volume replacement solution.
Department of Neurology, University of Ulm
Ulm, Baden-Wurttemberg, Germany
RECRUITINGChronic Inflammatory Demyelinating Polyneuropathy (CIDP) Score
Combined score consisting of Inflammatory Neuropathy Cause and Treatment (INCAT) disability score, Oxford muscle strength score, and vibration score, equally weighted
Time frame: 2 weeks
Inflammatory Neuropathy Cause and Treatment (INCAT) disability score
Standard clinical score for inflammatory neuropathies.
Time frame: 2 weeks
Oxford Muscle Strength Score (Medical Research Council, MRC)
Standard clinical score for evaluating muscle strength / paresis. Muscle strength will be measured on a scale between 0 (no movement) and 5 (full strength) on 8 pre-defined muscles (one proximal and one distal muscle at each extremity).
Time frame: 2 weeks
Vibration Score
Standard clinical score for evaluation of vibration sensitivity on a scale between 0 and 8, using a 256 tuning fork at 4 predefined spots (processus styloideus radii and malleolus lateralis on both sides).
Time frame: 2 weeks
Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) Score
Combined score consisting of Inflammatory Neuropathy Cause and Treatment (INCAT) disability score, Oxford muscle strength score, and vibration score, equally weighted
Time frame: 1, 3, and 5 weeks
Inflammatory Neuropathy Cause and Treatment (INCAT) disability score
Standard clinical score for inflammatory neuropathies.
Time frame: 1, 3, and 5 weeks
Oxford Muscle Strength Score (Medical Research Council, MRC)
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Standard clinical score for evaluating muscle strength / paresis. Muscle strength will be measured on a scale between 0 (no movement) and 5 (full strength) on 8 pre-defined muscles (one proximal and one distal muscle at each extremity).
Time frame: 1, 3, and 5 weeks
Vibration Score
Standard clinical score for evaluation of vibration sensitivity on a scale between 0 and 8, using a 256 tuning fork at 4 predefined spots (processus styloideus radii and malleolus lateralis on both sides).
Time frame: 1, 3, and 5 weeks
Hughes Score
Standard clinical score to quantify disability in Guillain-Barré syndrome
Time frame: 1, 2, 3, and 5 weeks
Pain
Pain quantified on a visual analog scale between 0 (no pain) and 10 (maximum pain).
Time frame: 1, 2, 3, and 5 weeks
N20
N20 latency of nervus medianus (both sides) as measured by somatosensory evoked potentials (SEPs)
Time frame: 2 and 5 weeks
P40
P40 latency of nervus tibialis (both sides) as measured by somatosensory evoked potentials
Time frame: 2 and 5 weeks
Nerve Conduction Velocity
Nerve conduction velocity of clinically affected nerves as measured by electroneurography (ENG)
Time frame: 2 and 5 weeks
Euro Quality of Life 5 Dimensions 5 Levels (EQ-5D-5L)
Quality of Life Scale
Time frame: 1, 2, 3, and 5 weeks
Immunoglobulin A in serum
Immunoglobulin A serum concentration
Time frame: 1, 2, 3, and 5 weeks
Immunoglobulin A in cerebrospinal fluid (CSF)
Immunoglobulin A concentration in cerebrospinal fluid
Time frame: 2 weeks
Immunoglobulin G in serum
Immunoglobulin G serum concentration
Time frame: 1, 2, 3, and 5 weeks
Immunoglobulin G in cerebrospinal fluid (CSF)
Immunoglobulin G concentration in cerebrospinal fluid
Time frame: 2 weeks
Immunoglobulin M in serum
Immunoglobulin M serum concentration
Time frame: 1, 2, 3, and 5 weeks
Immunoglobulin M in cerebrospinal fluid (CSF)
Immunoglobulin M concentration in cerebrospinal fluid
Time frame: 2 weeks
Interleukin-1
Interleukin-1 serum concentration
Time frame: 1, 2, 3, and 5 weeks
Interleukin-6
Interleukin-6 serum concentration
Time frame: 1, 2, 3, and 5 weeks
Anti-GM1 antibodies
Anti-GM1 antibody serum levels
Time frame: 1, 2, 3, and 5 weeks
Anti-GQ1b
Anti-GQQ1b antibody serum levels
Time frame: 1, 2, 3, and 5 weeks
Neurofilament light chain (NfL) serum
Neurofilament light chain (NfL) serum levels
Time frame: 1, 2, 3, and 5 weeks
Neurofilament light chain (NfL) in cerebrospinal fluid (CSF)
Neurofilament light chain (NfL) levels in cerebrospinal fluid (CSF)
Time frame: 2 weeks
Safety and Tolerability
Kind and frequency of Adverse Events (AEs) and Serious Adverse Events (SAEs)
Time frame: 1, 2, 3, and 5 weeks
Therapeutic Response
Share of patients with at least 20% improvement in CIDP score
Time frame: 1, 2, 3, and 5 weeks