Resumen

The intent of this study is to demonstrate the efficacy and safety of Immune Globulin Intravenous (Human), 10% Caprylate/Chromatography Purified (IGIV-C) in newly or previously diagnosed CIDP subjects. Eight courses of treatment with either placebo or IGIV-C will occur every 3 weeks. Neurological function will be measured by Inflammatory Neuropathy Cause and Treatment (INCAT) scores. Patients who deteriorate or show no improvement between day 16 and month 6 will receive the alternate study drug for an additional 6 months.

Descripción detallada

110 subjects, 55 per treatment group, with newly or previously diagnosed CIDP defined by INCAT neurophysiological diagnostic criteria will be enrolled into the trial. Patients will not be replaced if they discontinue prematurely.

Elegibilidad

Edad mínima: 18 YearsSexo: ALL

Criterios de inclusión

Documented diagnosis of CIDP must be made by a neurologist specializing/experienced in neuromuscular diseases based on: a) Progressive or relapsing motor and sensory dysfunction of more than one limb resulting from neuropathy over the 2 months prior to the date informed consent is obtained, and b) Cerebrospinal fluid (CSF) less than 50 white cells/µl since CIDP diagnosis (CSF testing studies are NOT mandatory)
Fulfillment of INCAT neurophysiological criteria for focal demyelinating polyradiculoneuropathy
Overall INCAT score between 2-9 and significant disability in upper or lower limb function in at least 2 limbs. (An INCAT score of 2 must be exclusively from leg disability to qualify.)

Criterios de exclusión

Treatment with IGIV or plasma within 3 months prior to entry
Steroids (Prednisolone or equivalent) \> 10 mg/day or equivalent (i.e., \> 20 mg every 2 days) during the last 3 months prior to entry
Treatment with immunomodulatory/immunosuppressive agents (azathioprin, tacrolimus,cyclosporin, Muromonab-CD3 (OKT3), any interferon), previous lymphoid irradiation or prior treatment with cyclophosphamide, methotrexate, mitoxantrone or any other immunosuppressant drug within the past 6 months prior to entry
Concomitant use of supplements containing any amount of fish oil within 30 days prior to entry
Respiratory impairment requiring mechanical ventilation
Myelopathy or evidence of central demyelination or persisting neurological deficits from stroke, central nervous system (CNS) trauma or peripheral neuropathies of other cause which include diabetes mellitus (defined as a history of type 1 or type 2 diabetes with fasting plasma glucose ≥ 7.0 mmol/L), uremic, toxic and familial neuropathies
Pure motor syndrome fulfilling criteria for multifocal motor neuropathy with conduction block. Lower motor neuron disorder with motor weakness in an upper limb, without sensory deficit and with proximal conduction block (50% decrease in amplitude/area with proximal distal stimulation ) in motor nerves and normal sensory nerve conduction studies.
Clinical or known evidence of associated systemic diseases that might cause neuropathy, including but not limited to connective tissue disease, HIV infection, hepatitis, Lyme disease, cancer (with the exception of benign skin cancer), Castleman's disease and systemic lupus erythematosus, diabetes mellitus (defined as a history of type 1 or type 2 diabetes with fasting plasma glucose ≥ 7.0 mmol/L), a malignant plasma cell dysplasia, immunoglobulin M (IgM) paraproteinemia, and amiodarone therapy.
History of anaphylaxis or severe systemic response to immunoglobulin or with a blood product.
Cardiac insufficiency (NYHA III/IV), cardiomyopathy, significant cardiac dysrhythmia requiring treatment, unstable or advanced ischemic heart disease, or history of congestive heart failure, severe hypertension (diastolic pressure \>120 mmHg or systolic \>170 mmHg).
Females who are pregnant, breast feeding, or if of childbearing potential, unwilling to practice adequate contraception throughout the study.
Known hyperviscosity.
History of renal insufficiency or serum creatinine levels \> 221 µmol/L (2.5 mg/dL).
Known selective immunoglobulin A (IgA) deficiency.
Other investigational drugs received within the 30 days prior to entry
Conditions whose symptoms and effects could alter protein catabolism and/or immunoglobulin G (IgG) utilization (e.g. protein-losing enteropathies, nephrotic syndrome).
Known hypercoagulable state.
Mentally challenged adult subjects who cannot give independent informed consent.
Subjects with uncompensated hypothyroidism (abnormally high thyroid-stimulating hormone (TSH) and abnormally low T4) or vitamin B12 deficiency (abnormally low) within the last 3 months prior to entry.

Intervenciones

drug

Immune Globulin IV (Human), 10% Caprylate/Chromatography Purified

2 g/kg body weight ideally over 2-4 days . Thereafter, study drug infusion (IGIV-C) will be administered every 3 weeks at a dose of 1 g/kg bw, given over 1-2 days for a total of 7 additional infusions

drug

Albumin (Human) 25%, United States Pharmacopeia (USP)

Albumin 25%, USP diluted with dextrose 5% to a final concentration of 0.1% as an intravenous infusion. Alternatively, it may be a bottled placebo of 0.1% Albumin (Human) in 0.2 M Glycine, 1.1 mm sodium caprylate, 0.25% sodium chloride. 2 g/kg body weight ideally over 2-4 days . Thereafter, infusion (placebo) will be administered every 3 weeks at a dose of 1 g/kg bw, given over 1-2 days for a total of 7 additional infusions

Multicenter, Randomized, Double-blind, Placebo-controlled, Study to Evaluate the Efficacy and Safety of IGIV-Chromatography (IGIV-C), 10% Treatment in Subjects With Chronic Inflammatory Demyelinating Polyneuropathy

Resumen

Descripción detallada

Elegibilidad

Criterios de inclusión

Criterios de exclusión

Intervenciones

Immune Globulin IV (Human), 10% Caprylate/Chromatography Purified

Albumin (Human) 25%, United States Pharmacopeia (USP)

Ubicaciones

Hospital Ramos Mejia

Hospital Frances

Fundacion para la Lucha contra Las Enfermedades Neurologicas de la Infacia (FLENI)

Instituto de Neurociencias Buenos Aires (INEBA)

Patrocinadores