Clinical trial NCT01579838: An Open Label Study of the Effects of Eculizumab in CD59 Deficiency
Official title: An Open Label Study of the Effects of Eculizumab in CD59 Deficiency
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: PHASE1
PHASE2
Conditions: Chronic Hemolysis
Lead sponsor: Hadassah Medical Organization
Sponsor class: OTHER
First posted: 2012-04-18
Enrollment: 5
Sex: ALL
Minimum age (years): 2
Maximum age (years): 70
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: The investigators have identified patients with CD59 deficiency that suffers from chronic hemolysis and peripheral demyelinating disease. It was shown that complement terminal pathway can cause inflammation in the peripheral nervous system. Complement can greatly increase the immune attack in the nerves. Eculizumab has already been shown to be effective in a rare blood disorder known as paroxysmal nocturnal hemoglobinuria (PNH). Attacks of PNH are also mediated through complement. Therefore, the investigators of this study are investigating whether by 'turning off' complement in CD59 deficiency, further attacks of hemolysis and nerve injury can be avoided and whether the neurological status will ameliorate.

Detailed description: It has been shown in some scientific studies that lack of CD59 in the context of the disease paroxysmal nocturnal hemoglobinuria (PNH)leads to chronic hemolysis. The investigators have identified patients wirh CD59 deficiency that suffers from chronic hemolysis and demyelinating disease. It was shown that complement terminal pathway can cause cause inflammation in nervous system. Complement can greatly increase the immune attack in the nerves. Eculizumab has already been shown to be effective in a rare blood disorder known as PNH. Attacks of PNH are also mediated through complement. Therefore, the investigators of this study are investigating whether by 'turning off' complement in CD59 deficiency, further attacks of hemolysis and nerve injury can be avoided.

The primary (most important) objectives of this study are to determine:

Whether Eculizumab ameliorate the neurological condition documented in the last month before treatment and whether it reduces the relapse frequency in patients with relapsing chronic inflammatory demyilinating polyneuropathy. The number of attacks during the one year treatment period will be compared to the number of attacks that occurred prior to initiation of eculizumab treatment. For patients with more than 2 year disease duration, the average number of attacks in the preceding 2 years will be calculated. For patients with less than 2 years disease duration the number of attacks in the preceding year will be used.

Whether Eculizumab reduces chronic hemolysis as judged by LDH levels, and haptoglobin, and level of hemoglobin. the same for corticosteroids and or I.V. IgG consumption before and after treatment with eculizumab.

The safety profile of eculizumab in patients with CD59 deficiency will be determined by parents report evry other week, documentation of clinic referral and hospitalizations. The number of participants with advers events will be determined.

The secondary objectives are to determine:

Whether eculizumab maintains or improves limbs motion, function and quality of life as measured by a variety of established disability scales like the modified SF36 and like a questionaire developed for this age group. The investigators will also assess the severity of an individual attack and the degree of recovery.

How the drug behaves in the patient's blood by measuring the presence of membrane attack complex on neutrophils and red blood cells.

Eligibility criteria: Inclusion Criteria:

* CD59 deficiency

Exclusion Criteria:

* recent exposure to meningococcal infections

Primary outcomes:
measure: Whether Eculizumab reduces chronic hemolysis
timeFrame: 8 months
measure: Steroid and iv IgG cumulative dosage
timeFrame: 8 months
measure: Safety.
timeFrame: 8 months
measure: Whether Eculizumab ameliorates the neurological status compared to one month before treatment
timeFrame: 8 months
Secondary outcomes:
measure: Whether eculizumab maintains or improves limbs motion
timeFrame: 8 months
measure: function and quality of life as measured by a variety of established disability scales.
timeFrame: 8 months
measure: The severity of an individual attack and the degree of recovery.
timeFrame: 8 months
measure: Levels of membrane attack complex
timeFrame: 8 months
Other outcomes:
Locations:
city: Jerusalem
country: Israel
facility: Hadassah Medical Center
Study officials:
affiliation: hmo
name: Dror Mevorach, MD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Mevorach D, Reiner I, Grau A, Ilan U, Berkun Y, Ta-Shma A, Elpeleg O, Shorer Z, Edvardson S, Tabib A. Therapy with eculizumab for patients with CD59 p.Cys89Tyr mutation. Ann Neurol. 2016 Nov;80(5):708-717. doi: 10.1002/ana.24770. Epub 2016 Sep 19.