| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated  | 
| Treatment of excessive daytime sleepiness associated to obstructive sleep apnea | 
 
 
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| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| E.1.2 | Version  | 12.1 | 
 
| E.1.2 | Level  | LLT | 
 
| E.1.2 | Classification code  | 10055577 | 
 
| E.1.2 | Term  | Obstructive sleep apnea syndrome | 
 
 
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| E.1.3 | Condition being studied is a rare disease  |  No  | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial  | 
| To evaluate the efficacy and the safety of BF2.649 on the excessive daytime sleepiness in OSA patients and to determine the minimum effective dose (MED) | 
 
 
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| E.2.2 | Secondary objectives of the trial  | 
- To assess the percentage of responders to treatment - To evaluate the reduction of sleepiness and sleep episodes on the sleep diary - To assess the Improvement in CGI (Assessment of illness severity) 
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| E.2.3 | Trial contains a sub-study  |  No  | 
| E.3 | Principal inclusion criteria  | 
- Patients having been submitted to nCPAP therapy for a minimum period of 3 months, and still complaining of Excessive Daytime Sleepiness despite the efforts made beforehand to obtain an efficient nCPAP therapy on Excessive Daytime Sleepiness (EDS) (group A) - Patients with OSA, complaining of Excessive Daytime Sleepiness but refusing to be treated by nCPAP therapy (group B) - Epworth score ≥ 11 - Patients having signed the informed consent form 
 
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| E.4 | Principal exclusion criteria | 
- Patient suffering from chronic severe insomnia in accordance with the International Classification of Sleep Disorders, but without OSA (ICSD 2005): Patient with narcolepsy - sleep debt not due to OSA (according to the physician‘s judgment) – non respiratory sleep fragmentation (Periodic legs movement…) - Patient suffering from a psychiatric disease - Severe comorbid medical or biological conditions that may jeopardize study participation at the discretion of the investigator - Positive beta HCG pregnant test or breast-feeding women - Women with child-bearing potential and no efficient birth-control method - Patient unable to understand and comply with the study protocol -Positive serology testes – HCV – HBsAg and HIV (optional) 
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| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Epworth Sleepiness Scale scores (ESS) on the 14-day treatment period | 
 
 
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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 |  No  | 
| E.6.7 | Pharmacodynamic |  No  | 
| E.6.8 | Bioequivalence |  No  | 
| E.6.9 | Dose response |  Yes  | 
| 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) |  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 |  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.8.3 | 
                                The trial involves single site in the Member State concerned
                             |  Yes  | 
| E.8.4 |  The trial involves multiple sites in the Member State concerned  |  No  | 
| E.8.5 | The trial involves multiple Member States |  No  | 
| 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
                     | 
| The last visit for the last patient included in the trial or the last visit before withdrawal for premature discontinuation | 
 
 
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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 | 0 | 
| E.8.9.1 | In the Member State concerned months | 9 | 
| E.8.9.1 | In the Member State concerned days | 0 | 
| E.8.9.2 | In all countries concerned by the trial years | 0 | 
| E.8.9.2 | In all countries concerned by the trial months | 9 | 
| E.8.9.2 | In all countries concerned by the trial days | 0 |