| 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 | PT |  
| E.1.2 | Classification code | 10061256 |  
| E.1.2 | Term | Ischaemic stroke |  
| E.1.2 | System Organ Class | 10029205 - Nervous system disorders |  | 
| 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 demonstrate the superiority of at least one of the two doses of S 44819 versus placebo on functional recovery from ischemic stroke measured with the modified Rankin Scale (mRS) after 90 days of treatment. |  | 
| E.2.2 | Secondary objectives of the trial | 
| - To assess the efficacy of the two doses of S 44819 versus placebo in stroke recovery using neurological evaluation (NIHSS), activities of daily living test (BI) and cognitive performance tests (Moca, TMT) - To assess the safety and tolerability of S 44819.
 |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| - Patients aged between 18 and 80 years (both inclusive) - Acute ischemic stroke that occured at least 72 hours (3 days) and less than 144 hours (6 days) (both inclusive) before inclusion.
 |  | 
| E.4 | Principal exclusion criteria | 
| - Any non-selection criteria, which could have occurred after the selection visit - Positive urinary or blood pregnancy test (for female patients of child bearing potential)
 - Any clinically significant findings from the local laboratory test likely to interfere with the ability to participate in the study and / or with the study outcome
 - Severe renal impairment
 - Severe hepatic impairment or liver enzymes abnormalities found in the local laboratory test
 - Stroke due to cerebral venous thrombosis
 - Brain MRI showing a severe microangiopathy
 - Brain MRI showing an acute lesion in brain stem or cerebellum
 - Brain imaging showing an acute haemorrhagic stroke or a symptomatic haemorrhagic transformation of the brain infarct
 - Qualifying ischemic cerebral event older than 144 hours at inclusion
 - Any clinically relevant abnormalities detected during the examinations likely to interfere with study procedures or study outcome,
 - Repeated prolongation of ECG QTcF
 - Patient or authorised representative refusing to attend study visits or to take part in the study
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Modified Rankin Scale (mRS) after 90 days treatment |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point |  | 
| E.5.2 | Secondary end point(s) | 
| - National Institutes of Health Stroke Scale (NIHSS) total score - Barthel Index (BI) total score
 - Montreal Cognitive Assessment scale (Moca) total score
 - Trail Making Test (TMT) time for part A and time for part B
 - Safety criteria: adverse events, suicidal ideation and suicidal behaviour using the C-SSRS, body weight, BMI, vital signs (supine for Systolic and Diastolic Blood Pressure), 12 lead-ECG, laboratory parameters (haematology and biochemistry)
 |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| NIHSS: ASSE D0 D5 D30 D60 D90 D105 BI: D30 D60 D90 D105
 Moca/TMT: D30 D90
 Adverse events: all over the study
 C-SSRS: D5 D30 D60 D90 D105
 Physical examination: ASSE D0 D5 D30 D60 D90 D105
 Supine vital signs (SBP/DBP): ASSE D0 D5 D30 D60 D90 D105
 12-lead ECG: D0 D5 D30 D60 D90 D105
 Body weight: ASSE D30 D60 D90 D105
 Local biochemistry + haematology : D0
 Central biochemistry + haematology: D0 D30 D60 D90 D105
 |  | 
| 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 | No | 
| E.6.4 | Safety | Yes | 
| E.6.5 | Efficacy | Yes | 
| E.6.6 | Pharmacokinetic | Yes | 
| E.6.7 | Pharmacodynamic | No | 
| E.6.8 | Bioequivalence | No | 
| E.6.9 | Dose response | No | 
| E.6.10 | Pharmacogenetic | No | 
| E.6.11 | Pharmacogenomic | Yes | 
| 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.8.2.4 | Number of treatment arms in the trial | 3 | 
| 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 | 6 | 
| 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 | 
| Australia |  
| Belgium |  
| Brazil |  
| Canada |  
| Czech Republic |  
| France |  
| Germany |  
| Hungary |  
| Italy |  
| Netherlands |  
| Poland |  
| Spain |  
| Sweden |  
| United Kingdom |  | 
| 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 | 
| Last visit Last Participant as stated in the protocol |  | 
| 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 | 8 | 
| E.8.9.1 | In the Member State concerned days | 0 | 
| E.8.9.2 | In all countries concerned by the trial years | 1 | 
| E.8.9.2 | In all countries concerned by the trial months | 8 | 
| E.8.9.2 | In all countries concerned by the trial days | 0 |