| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| subarachnoid hemorrhage |  
| subarachnoïdale bloeding |  | 
| E.1.1.1 | Medical condition in easily understood language | 
| bleeding from a weak spot in a cerebral artery |  
| bloeding uit een zwakke plek in een hersenarterie |  | 
| E.1.1.2 | Therapeutic area | Diseases [C] - Nervous System Diseases [C10] | 
| MedDRA Classification | 
| 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 | 
| To evaluate whether a group of patients with subarachnoid hemorrhage (SAH) treated by standard, state-of-the-art SAH management with additional ultra-early and short-term tranexamic acid (TXA) administration (TXA group) has a significantly higher percentage of patients with a favourable outcome after six months (score 0-3 on the Modified Rankin Scale) compared to a group treated by standard, state-of-the-art SAH management without additional TXA administration (control group). |  
| Om te evalueren of een groep van patiënten met een subarachnoïdale bloeding (SAB) die behandeld worden door middel van een standaard, up-to-date protocol met toevoeging van ultra-vroege en kortdurende toediening van tranexaminezuur (TXA) (TXA groep) een significant hoger percentage van patiënten met een gunstige uitkomst na zes maanden (score 0-3 op de Modified Rankin Scale) heeft, vergeleken met een groep van patiënten met een SAB die behandeld worden door middel van een standaard, up-to-date protocol zonder toevoeging van TXA (controlegroep). |  | 
| E.2.2 | Secondary objectives of the trial | 
| To evaluate significant differences between the TXA group and the control group in: • case fatality rate at discharge and 6 months after SAH
 • rebleed rate before or during treatment
 • thromboembolic complications during endovascular treatment
 • delayed cerebral ischemia rate
 • complications, such as hydrocephalus, extracranial thrombosis or hemorrhagic complications, during admission and at 6 months after SAH
 • (micro)infarctions on MR imaging at 6 months after endovascular treatment
 • care costs 6 months after SAH
 • quality of life 6 months after SAH
 
 • To evaluate whether there is a significant association between favourable outcome at six months after SAH and time between ictus and TXA administration
 • To evaluate whether there is a significant difference in rebleeds and favourable outcome between females and males and between patients in different WFNS groups at admittance
 • To evaluate the cause of poor outcome
 
 |  
| Om te evalueren of er significante verschillen zijn tussen de TXA groep en de controle groep in: • mortaliteit bij ontslag en 6 maanden na de SAB
 • aantal rebleeds voor of tijdens behandeling
 • tromboembolische complicaties tijdens endovasculaire behandeling
 • aantal gevallen van late cerebrale ischemie
 • complicaties, zoals hydrocefalus, extracraniële trombose of hemorragische complicaties, tijdens opname en 6 maanden na de SAB
 • (micro)infarcten op MRI 6 maanden na endovasculaire behandeling
 • zorgkosten 6 maanden na SAB
 • kwaliteit van leven 6 maanden na SAB
 
 • Om te evalueren of er een significante associatie is tussen een gunstige uitkomst 6 maanden na de SAB en de tijd tussen de ictus en TXA toediening
 • Om te evalueren of er een significant verschil is in rebleeds en gunstige uitkomst tussen vrouwen en mannen en tussen patiënten met een verschillende WFNS gradering bij binnenkomst
 • Om de oorzaak van een slechte uitkomst te evalueren
 
 |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| • Admission to one of the study centers or their referring hospitals • CT-confirmed SAH with most recent ictus less than 24 hours ago
 • Age 18 years and older
 
 
 |  
| • Opname bij één van de studiecentra of diens verwijzende ziekenhuizen • Met CT bevestigde subarachnoïdale bloeding met de meest recente ictus minder dan 24 uur geleden
 • Leeftijd 18 jaar of ouder
 
 |  | 
| E.4 | Principal exclusion criteria | 
| • No proficiency of the Dutch or English language No loss of consciousness after the hemorrhage with World Federation of Neurological Surgeons (WFNS) grade 1 or 2 on admission in combination with a perimesencephalic hemorrhage
 • Bleeding pattern on CT compatible with a traumatic SAH
 • Treatment for deep vein thrombosis
 • History of blood coagulation disorder
 • Pregnancy
 • Severe renal (serum creatinin >150 mmol/L) or liver failure (AST > 150 U/l or ALT > 150 U/l or AF > 150 U/l or γ-GT > 150 U/l)
 • Imminent death within 24 hours
 
 |  
| • No proficiency of the Dutch or English language Geen bewustzijnsverlies na de bloeding met een World Federation of Neurological Surgeons (WFNS) graad 1 of 2 bij opname in combinatie met een perimesencephale bloeding
 • Bloedingspatroon op de CT scan passend bij een traumatische SAB
 • Behandeling voor diep veneuze trombose
 • Bloedstollingsproblemen in de voorgeschiedenis
 • Zwangerschap
 • Ernstig nier- (serum creatinine >150 mmol/L) of leverfalen (AST > 150 U/l of ALT > 150 U/l of AF > 150 U/l of γ-GT > 150 U/l)
 • Dreigend overlijden binnen 24 uur
 
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Clinical outcome assessed by the Modified Rankin Scale Score dichotomized as a favourable (0-3) or unfavourable (4-6) outcome. |  
| Klinische uitkomst beoordeeld met de Modified Rankin Scale Score gedichotomiseerd als een gunstige (0-3) of ongunstige (4-6) uitkomst. |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| 6 months after SAH |  
| 6 maanden na de SAB |  | 
| E.5.2 | Secondary end point(s) | 
| 1: case fatality rate 2: rebleed rate
 3: thromboembolic complications
 4: delayed cerebral ischemia rate
 5: complications (hydrocephalus, extracranial thrombosis or hemorrhagic complications)
 6: (micro)infarctions on MR imaging
 7: care costs
 8: quality of life
 
 
 |  
| 1: mortaliteit 2: aantal rebleeds
 3: tromboembolische complicaties
 4: aantal gevallen van late cerebrale ischemie
 5: complicaties (hydrocefalus, extracraniële trombose of hemorragische complicaties)
 6: (micro)infarcten op MRI
 7: zorgkosten
 8: kwaliteit van leven
 
 
 
 |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| 1: six months after SAH 2: before or during aneurysm treatment
 3: during endovascular treatment
 4: during admission
 5: during admission and at six months after SAH
 6: six months after endovascular treatment
 7: six months after SAH
 8: six months after SAH
 |  
| 1: 6 maanden na de SAB 2: voor of tijdens behandeling van het aneurysma
 3: tijdens endovasculaire behandeling
 4: tijdens opname
 5: tijdens opname en 6 maanden na de SAB
 6: 6 maanden na endovasculaire behandeling
 7: 6 maanden na SAB
 8: 6 maanden na SAB
 
 |  | 
| 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 | No | 
| E.6.5 | Efficacy | No | 
| E.6.6 | Pharmacokinetic | No | 
| 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 | 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 | Yes | 
| E.8.1.3 | Single blind | No | 
| E.8.1.4 | Double blind | No | 
| E.8.1.5 | Parallel group | Yes | 
| E.8.1.6 | Cross over | No | 
| E.8.1.7 | Other | Yes | 
| E.8.1.7.1 | Other trial design description | 
| geblindeerde eindpunt meting |  
| blinded endpoint assessment |  | 
| 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 | 
| standaard, up-to-date behandeling (die de TXA groep ook krijgt) |  
| standard, up-to-date management (which is also received by the TXA group) |  | 
| 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 | 30 | 
| 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 | No | 
| E.8.6.2 | Trial being conducted completely outside of the EEA | No | 
| 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 endpoint assessment of last subject |  
| Laatste eindpuntmeting van laatste proefpersoon |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 6 | 
| E.8.9.1 | In the Member State concerned months | 0 | 
| E.8.9.1 | In the Member State concerned days | 0 |