| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated  | 
 | 
| E.1.1.1 | Medical condition in easily understood language  | 
 | 
| E.1.1.2 | Therapeutic area  | Diseases [C] - Nervous System Diseases [C10] | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| E.1.2 | Version  | 19.0 | 
 
| E.1.2 | Level  | LLT | 
 
| E.1.2 | Classification code  | 10029322 | 
 
| E.1.2 | Term  | Neuromyelitis optica | 
 
| E.1.2 | System Organ Class  | 100000004852 | 
 
 
 | 
| 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  | 
| Efficacy of eculizumab treatment as compared with placebo in relapsing NMO patients based on the time to first relapse and relapse risk reduction. | 
 
 
 | 
| E.2.2 | Secondary objectives of the trial  | 
- Safety and tolerability of eculizumab compared with placebo
 - Efficacy of eculizumab compared with placebo
 - Describe the pharmacokinetics (PK) and pharmacodynamics (PD) of eculizumab 
 
 
 | 
 
 
 | 
| E.2.3 | Trial contains a sub-study  |  No  | 
| E.3 | Principal inclusion criteria  | 
- Male or female patient ≥ 18 years old
 - Diagnosis of NMO or NMO spectrum disorder   
 - NMO-IgG seropositive 
 - Historical Relapse of at least 2 relapses in the last 12 months or 3 relapses in the last 24 months, with at least 1 relapse in the 12 months prior to the Screening
 - EDSS score ≤7
 - Immunosuppressive therapy is allowed provided patients have been on
 a stable maintenance dose prior to the Screening and remain on a stable dose for the duration of the study
 - Patients must be willing and able to give written informed consent | 
 
 
 | 
| E.4 | Principal exclusion criteria | 
- Use of rituximab or mitoxantrone within 3 months prior to screening
 - Use of IVIg within 3 weeks prior to screening
 
 | 
 
 
 | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Time to first adjudicated On-Trial Relapse   | 
 
 
 | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
Relapse evaluation visits:
 - Within 24/48 hours after relapse
 - Week +1 after relapse
 - Week +4 after relapse
 - Week +6 after relapse
 
 Completion of the trial after 24 adjudicated On-Trial Relapse events in 24 distinct patients. | 
 
 
 | 
| E.5.2 | Secondary end point(s) | 
- Change from baseline in EDSS score at the End of Study Period
 - Adjudicated annualized relapse rate
 - Change from baseline in EQ-5D at the End of the Study Period 
 - Change from baseline in modified Rankin Scale (mRS) score at the End of the Study Period 
 - Change from baseline in ambulatory function as measured by Hauser Ambulation Index at the End of the Study Period.
 
 | 
 
 
 | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
evaluation at:
 - Screening visit
 - Weeks 1, 4, 8, 12, 24, 36, 48, 60, 72, 84, 96, 104
 - Relapse evaluation visits
 - End of trial visit | 
 
 
 | 
| 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 |  No  | 
| 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) |  No  | 
| E.7.3 | Therapeutic confirmatory (Phase III) |  Yes  | 
| E.7.4 | Therapeutic use (Phase IV) |  No  | 
| E.8 Design of the trial | 
| E.8.1 | Controlled |  Yes  | 
| E.8.1.1 | Randomised |  Yes  | 
| E.8.1.2 | Open |  No  | 
| E.8.1.3 | Single blind |  No  | 
| E.8.1.4 | Double blind  |  Yes  | 
| E.8.1.5 | Parallel group |  Yes  | 
| E.8.1.6 | Cross over  |  No  | 
| E.8.1.7 | Other |  No  | 
| E.8.2 |  Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) |  No  | 
| E.8.2.2 | Placebo  |  Yes  | 
| E.8.2.3 | Other |  No  | 
| E.8.2.4 | Number of treatment arms in the trial | 2 | 
| 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 | 1 | 
| E.8.5 | The trial involves multiple Member States |  Yes  | 
| E.8.5.1 | Number of sites anticipated in the EEA | 69 | 
| 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 |  No  | 
| 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 | 
| Argentina | 
 
| Australia | 
 
| Austria | 
 
| Belgium | 
 
| Brazil | 
 
| Canada | 
 
| Chile | 
 
| Colombia | 
 
| Croatia | 
 
| Czech Republic | 
 
| Denmark | 
 
| Finland | 
 
| France | 
 
| Germany | 
 
| Hong Kong | 
 
| Italy | 
 
| Japan | 
 
| Korea, Democratic People's Republic of | 
 
| Korea, Republic of | 
 
| Malaysia | 
 
| Martinique | 
 
| Peru | 
 
| Romania | 
 
| Russian Federation | 
 
| Saudi Arabia | 
 
| Singapore | 
 
| Spain | 
 
| Sweden | 
 
| Switzerland | 
 
| Taiwan | 
 
| Thailand | 
 
| Turkey | 
 
| United Arab Emirates | 
 
| United Kingdom | 
 
| United States | 
 
 
 | 
| 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
                     | 
| The end of the Trial is defined as completion of the End of Study / Early Termination Visit by all patients | 
 
 
 | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 3 | 
| E.8.9.1 | In the Member State concerned months | 0 | 
| E.8.9.1 | In the Member State concerned days | 0 | 
| E.8.9.2 | In all countries concerned by the trial years | 3 | 
| E.8.9.2 | In all countries concerned by the trial months | 0 | 
| E.8.9.2 | In all countries concerned by the trial days | 0 |