Chronic Inflammatory Demyelinating Polyneuropathy

Study of Efficacy and Safety of Privigen in Subjects With Chronic Inflammatory Demyelinating Polyneuropathy

NCT01184846 | PHASE 3 | INTERVENTIONAL

The objective of this study is to demonstrate the efficacy and safety of Privigen in subjects with CIDP.

22 Sites

31 Participants

Recruiting

18 Years to 55 Years

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Study Site

Bruxelles,Belgium

Study Site

Edegem,Belgium

Study Site

Gent,Belgium

Study Site

Leuven,Belgium

Study Site

Helsinki,Finland

Study Site

Turku,Finland

Study Site

Vaasa,Finland

Study Site

Limoges,France

Study Site

Lyon,France

Study Site

Marseille,France

Study Site

Montpellier,France

Study Site

Paris,France

Study Site

Berlin,Germany

Study Site

Feldberger Seenlandschaft,Germany

Study Site

Göttingen,Germany

Study Site

Itzehoe,Germany

Study Site

Prien,Germany

Study Site

Schwedt,Germany

Study Site

Würzburg,Germany

Study Site

Krakow,Poland

Study Site

Lublin,Poland

Study Site

Wroclaw,Poland

Study Eligibility Criteria

Inclusion Criteria

IVIG-untreated subjects:
* Either subjects with newly diagnosed CIDP (developing over at least 2 months) or subjects with an IVIG treatment interruption for at least 1 year with a progressive disease (deteriorating in the last 2 months) prior to enrolment.
* Actual diagnosis (including electrophysiology) of CIDP with progressive or relapsing dysfunction from motor and sensory or symmetric motor nerve only in at least 1 limb resulting from neuropathy. Criteria for definite or probable CIDP according to EFNS/PNS guideline.
* Age ≥18 years.
* Male or female.
* Written informed consent for study participation obtained before undergoing any study specific procedures.
IVIG-pretreated subjects:
* Being treated regularly with IVIG on a fixed cycle length of 2 to 6 weeks ± 5 days in the last 6 months, on a fixed dosage of ± 20 % in the last 6 months and deteriorating by at least 1 INCAT score point during the Washout Period of up to 10 weeks (except for an increase from 0 to 1 solely due to upper limb score).
* Historic diagnosis of CIDP with progressive or relapsing dysfunction from motor and sensory or symmetric motor nerve only in at least 1 limb resulting from neuropathy. Criteria for definite or probable CIDP according to EFNS/PNS guideline.
* Age ≥18 years.
* Male or female.
* Written informed consent for study participation obtained before undergoing any study specific procedures.

Exclusion Criteria

* A motor syndrome that fulfils criteria for multifocal motor neuropathy (MMN) with conduction block (i.e., upper limb motor weakness without sensory deficit and with a 50% decrease in action potential amplitude or area on proximal compared with distal stimulation in motor nerves).
* CIDP with monoclonal gammopathy of uncertain significance (CIDP-MGUS) with anti-MGUS antibodies and patients with distal acquired demyelinating symmetric (DADS)neuropathy.
* Any disease (mainly neurological or chronic orthopedic) that may cause symptoms or may interfere with treatment or outcome assessments with the INCAT (e.g., diphtheria, drug or toxin exposure and diabetes mellitus likely to have caused the neuropathy, IgM paraproteinemia, familial neuropathy, borreliosis with radiculopathy, post-polio-syndrome,M. Parkinson, stroke).
* Current malignancy.
* History of cardiac insufficiency (New York Heart Association \[NYHA\] III/IV), cardiomyopathy, significant cardiac dysrhythmia requiring treatment, unstable or advanced ischemic heart disease, congestive heart failure or severe hypertension.
* History of thrombotic episodes (deep vein thrombosis, myocardial infarction, cerebrovascular accident).
* Migraine associated with IVIG infusion in the last 3 months prior to enrolment.
* Known allergic or other severe reactions to blood products including intolerability to previous IVIG (i.e. severe headache, hypersensitivity, intravascular hemolysis).
* Subjects with serum IgA level less than 50% of the lower normal limit.
* Known hyperprolinemia.
* Any condition (including alcohol, drug or medication abuse) that is likely to interfere with evaluation of the study product or satisfactory conduct of the study.
* Plasma exchange 3 months prior to enrolment.
* Treatment with immunomodulatory agents others than steroids, methotrexate or azathioprine (e.g. interferon, TNF-α inhibitors) within 6 months before enrolment.
* Treatment with rituximab in the 12 months before enrolment.
* Abnormal laboratory parameters: creatinine \> 1.5 times the upper normal limit (UNL), lactate dehydrogenase (LDH) \> 1.5 times the UNL, C-reactive protein (CRP) \> 1.5 times the UNL, hemoglobin (Hb) \< 10 g/dL.
* Ongoing HIV, hepatitis C and hepatitis B infection.
* Participation in another clinical study (or use of another investigational medicinal product \[IMP\]) within 3 months prior to enrolment
* Not able to comply with study procedures and treatment regimen.
* Employee at the study site, or spouse/partner or relative of any study staff (e.g., investig

Additional Studies

Additional studies can be found at ClinicalTrials.gov