E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Adolescent patients (from 12 and up to 18 years of age) with plasma therapyresistant Atypical Hemolytic-Uremic Syndrome (aHUS). |
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MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 9.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10018932 |
E.1.2 | Term | Haemolytic uraemic syndrome |
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E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
Assess the effect of eculizumab to reduce thrombotic microangiopathy (TMA) as indicated by thrombocytopenia as measured by platelet count change from baseline through the treatment period in patients with plasma therapy-resistant Atypical Hemolytic-Uremic Syndrome (aHUS).
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E.2.2 | Secondary objectives of the trial |
• Evaluate additional efficacy endpoints such as the effect of eculizumab on: − TMA Intervention Rate (# PT and # Dialysis Events/Patient/Day) during the Treatment Period compared with the TMA Intervention Rate prior to the first dose of Investigational Product. − TMA-Event Free status defined as the absence of [1] decrease in platelet count of >25% from the Platelet Count Pre-PT Baseline Set-Point; [2] PT while the patient is receiving eculizumab, and [3] new dialysis for at least12 weeks. − Key Hemolytic measures. − Quality of Life measures. − Renal function measures. − TMA Remission. • Characterize the overall safety and tolerability of eculizumab. • Describe the pharmacokinetics (PK) and pharmacodynamics (PD) of eculizumab in patients with aHUS. • Perform a series of exploratory efficacy analyses. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Male or female patients from 12 and up to 18 years of age who have been diagnosed with Atypical Hemolytic-Uremic Syndrome (aHUS). Patients may be newly diagnosed, experiencing a relapse of the disease, or having a post-transplant recurrence of the disease. 2. Patients must exhibit a decrease in platelet count despite at least 4 Plasma Therapy (PT) treatments in the 1 week immediately prior to screening. At screening, platelet count must be < 150 x 10^9/L and at least 25% lower than the average of 3 platelet counts obtained during remission and at least 1 month apart over the 12 months prior to screening (designated the “average remission platelet count”). 3. If historical counts are not available, platelet count at screening must be < 75 x 10^9/L despite PT treatment administration of at least 4 PT treatments in the 1 week immediately prior to screening. 4. Known complement regulatory protein genetic abnormality, i.e., a mutation in Complement Protein 3, factor H or associated factor, factor I, or membrane cofactor protein 1 (MCP-1) or known Factor B gain-of-function mutation, or known Anti- CFH antibody (“aHUS lesions”). • Patients diagnosed with aHUS with any of these aHUS lesions are eligible and will be assigned to one of the following parallel categories during the treatment period of the trial: − (Category 1) Complement Protein 3 or factor H or factor I functional deficiency or abnormal factor interaction (C3/CFH/CFI FFP Group); − (Category 2) Factor B Gain of Function; − (Category 3) Anti-CFH Antibody (anti-CFH Group); − (Category 4) MCP-1 deficiency (MCP-1 Group); 5. Patients diagnosed with HUS of the atypical type without documented complement regulatory protein genetic abnormality or known anti-CFH antibody are eligible if other etiologies of HUS have been ruled out as confirmed in the Exclusion Criteria (i.e., including Shiga-toxin negative, non-infectious, non-drug-exposure-related [e.g., cyclosporine]), no known HIV positivity, and anti-phospholipid antibody negative). Thrombotic thrombocytopenic purpura also must be ruled out (i.e., ADAMTS-13 activity must be > 5%; see Exclusion Criteria). Patients meeting these conditions will be assigned to Category 5. In addition, these patients will undergo genetic testing to determine if a mutation can be identified. If a mutation is identified, the patient will be reassigned to the appropriate category. 6. Lactate dehydrogenase (LDH) level ≥ ULN; 7. Creatinine level ≥ ULN for age (patients requiring acute dialysis for acute renal failure also eligible). 8. Female patients of childbearing potential must be practicing an effective, reliable and medically acceptable contraceptive regimen during the entire duration of the study, including the follow-up period. 9. Patient’s parents/legal guardian must be willing and able to give written informed consent and patients must be willing to give written informed assent (if applicable as determined by the IRB/IEC). 10. Able and willing to comply with study procedures. |
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E.4 | Principal exclusion criteria |
1. ADAMTS-13 inhibitor or deficiency (i.e., ADAMTS-13 activity <5%) as measured at the screening visit. 2. Malignancy. 3. Typical HUS (Shiga toxin +). 4. Known HIV infection. 5. Identified drug exposure-related HUS. 6. Infection-related HUS. 7. Renal function status requiring chronic dialysis (defined as dialysis on a regular basis as renal replacement therapy). 8. Patients with a confirmed diagnosis of sepsis defined as positive blood cultures within 7 days of the screening visit and not treated with antibiotics to which the organism is sensitive. 9. Presence or suspicion of active and untreated systemic bacterial infection that, in the opinion of the Investigator confounds an accurate diagnosis of aHUS or impedes the ability to manage the aHUS disease. 10. Pregnancy or lactation. 11. Unresolved meningococcal disease. 12. Known Systemic Lupus Erythematosus (SLE) or antiphospholipid antibody positivity or syndrome. 13. Any medical or psychological condition that, in the opinion of the investigator, could increase the patient’s risk by participating in the study or confound the outcome of the study. 14. Patients receiving IVIg or Rituximab therapy. 15. Patients receiving other immunosuppressive therapies such as steroids, mTOR inhibitors or FK506 inhibitors are excluded unless: [1] part of a post-transplant antirejection regime, [2] patient has confirmed anti-CFH antibody requiring immunosuppressive therapy and [3] dose of such medications have been unchanged for at least 4 weeks prior to the screening period. 16. Patients receiving Erythrocyte stimulating agents (ESAs) unless already on a stable dose for at least 4 weeks prior to the screening period. 17. Participation in any other investigational drug trial or exposure to other investigational agent, device, or procedures beginning 4 weeks prior to screening and throughout the entire trial. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Platelet count change from baseline (Platelet Count Pre-PT Baseline Set-point value) after first dose of Investigational Product. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | Yes |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | Yes |
E.8.1.7.1 | Other trial design description |
The protocol has pre-defined objectives and pre-specified end points to assess eculizumab’s efficacy |
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E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
In protocol each patient serves as his/her own control as described by the endpoints in the protocol |
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E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 2 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 25 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 1 |