| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| Prophylaxis of venous thromboembolism. |  
| Profilassi del tromboembolismo venoso |  | 
| E.1.1.1 | Medical condition in easily understood language | 
| Prevention of blood clots |  
| Prevenzione della formazione di coaguli di sangue. |  | 
| E.1.1.2 | Therapeutic area | Diseases [C] - Cardiovascular Diseases [C14] | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 14.1 |  
| E.1.2 | Level | LLT |  
| E.1.2 | Classification code | 10049909 |  
| E.1.2 | Term | Venous thromboembolism prophylaxis |  
| E.1.2 | System Organ Class | 10042613 - Surgical and medical procedures |  | 
| 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 | 
| Demonstrate the superiority of extended duration (35 days + 7 day  window, i.e. 35-42 days allowed) anticoagulation with betrixaban as  compared to the standard of care (10 ± 4 days) with enoxaparin for  prevention of VTE in patients who are at risk due to acute medical illness. |  
| Dimostrare la superiorita' dell’anticoagulazione di durata estesa (35 giorni + finestra di 7 giorni, ossia sono ammessi 35-42 giorni) con betrixaban rispetto allo standard di cura (10 ± 4 giorni) con enoxaparina nella prevenzione del TEV in pazienti a rischio a causa di patologia medica acuta. |  | 
| E.2.2 | Secondary objectives of the trial |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| Male or female (non-pregnant, non-breastfeeding women) ages 40 years and older anticipated to be severely immobilized for at least 24 hours after randomization hospitalized  with one of the following:    o congestive heart failure,    o acute respiratory failure,    o acute infection without septic shock,    o acute rheumatic disorders,    o acute ischemic stroke with lower extremity hemiparesis or  hemiparalysis. |  
| Uomini o donne (non in gravidanza o allattamento) di eta' superiore o uguale ai 40 anni, avvisati che saranno fortemente immobilizzati per almeno 24 ore dopo la randomizzazione, ospedalizzati per una delle seguenti condizioni:  o Insufficienza cardiaca;  o Insufficienza respiratoria acuta;  o Infezione acuta senza shock settico;   o Disturbi reumatici acuti;  o Ictus ischemico acuto con emiparesi degli arti inferiori o emi-paralisi. |  | 
| E.4 | Principal exclusion criteria | 
| o A condition requiring prolonged anticoagulation or anti-platelets;  o Active bleeding or at high risk of bleeding;  o Unable to take oral medication;  o ontraindication to anticoagulant therapy;  o General conditions in which subjects are not suitable to participate in the  study. |  
| o Condizioni che richiedono prolungata terapia anticoagulante o antipiastrinica.  o Sanguinamento attivo o rischio di sanguinamento.  o Incapacita' di assumere farmaci per via orale.  o Controindicazioni alla terapia anticoagulante.  o Condizioni generali per le quali il soggetto non e' in grado di partecipare allo studio. |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Efficacy:  The primary (composite) outcome is the occurrence of any of the  following events through the Day 35 visit:  Asymptomatic proximal DVT (as detected by ultrasound), symptomatic  DVT (proximal or distal), non-fatal PE, or VTE related death  Safety:  The primary safety outcome will be the occurrence of major bleeding  through 7 days after discontinuation of all study medication. |  
| EFFICACIA  L’outcome primario (composito) e' l’occorrenza di uno qualsiasi dei seguenti eventi fino alla visita del Giorno 35:   TVP prossimale asintomatica (rilevata con ecografia), TVP sintomatica (prossimale o distale), EP non fatale o decesso legato a TEV.    SICUREZZA  L’outcome di sicurezza primario sara' l’occorrenza di sanguinamento maggiore fino a 7 giorni dopo l’interruzione di tutti i farmaci dello studio. |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| There will be a single interim efficacy and futility analysis of  the primary and secondary outcomes when approximately 50% of the  primary-endpoint evaluable patients have data (i.e., 2568 patients with  an evaluable primary outcome).  Efficacy and safety outcomes will be reviewed by the IDMC at the  following defined intervals:  • After 250 patients have completed follow-up  • After 750 patients have completed follow-up  • After 1500 patients have completed follow-up  • After 3000 patients have completed follow-up  • After 4500 patients have completed follow-up  • After 2568 patients have evaluable primary outcome data. This may  occur simultaneously with one of the above meetings if the meeting  criteria coincide. |  
| Sara' effettuata una sola analisi ad interim di efficacia e futilita' degli outcome primari e secondari quando sara' disponibile circa il 50% dei pazienti valutabili per l’endpoint primario (vale a dire 2568 pazienti con un outcome primario valutabile).  Gli outcome di efficacia e sicurezza saranno esaminati dal IDMC ai seguenti intervalli definiti: -Dopo che 250 pazienti avranno completato il follow-up (f-up),-Dopo che 750 pazienti avranno completato il f-up, -Dopo che 1500 pazienti avranno completato il f-up, -Dopo che 3000 pazienti avranno completato il f-up, -Dopo che 4500 pazienti avranno completato il f-up, -Dopo che 2568 pazienti disporranno di dati per l’outcome primario valutabile. Cio' potra' anche verificarsi in contemporanea ad uno dei sopra menzionati incontri. |  | 
| E.5.2 | Secondary end point(s) | 
| Efficacy:  The key secondary (composite) outcome is the occurrence of any of the  following events through the end of the parenteral treatment period:  Asymptomatic proximal DVT (as detected by ultrasound), symptomatic  DVT (proximal or distal), non-fatal PE, or VTE related death    Other Secondary Efficacy Outcomes:  The following other secondary composite outcomes will be examined:  • Symptomatic VTE: The occurrence of symptomatic VTE through the Day  35 visit (VTE-related death, nonfatal PE or symptomatic DVT).  • The occurrence of asymptomatic proximal DVT, symptomatic DVT  (proximal or distal), non-fatal PE, or allcause mortality through the Day  35 visit.  Safety:  Secondary safety outcomes include the following:  • Occurrence of clinically relevant non-major bleeding (CRNM bleeding)  through 7 days after discontinuation of all study medication.  • Occurrence of major bleeding through the time of parenteral study  medication discontinuation.  • Occurrence of CRNM bleeding through the time of parenteral study  medication discontinuation.  • Occurrence of major bleeding from the time of parenteral study  medication discontinuation through Day 35.  • Occurrence of CRNM bleeding from the time of parenteral study  medication discontinuation through Day 35.  • Occurrence of major bleeding through the time of parenteral study  medication discontinuation in patientswith severe renal insufficiency  (creatinine clearance <  30 ml/min).  • Occurrence of CRNM bleeding through the time of parenteral study  medication discontinuation in patients with severe renal insufficiency.  • Occurrence of major bleeding through 7 days after discontinuation of  all study medication in patients with severe renal insufficiency.  • Occurrence of CRNM bleeding through 7 days after discontinuation of  all study medication in patients with severe renal insufficiency.  • Occurrence of stroke, as adjudicated by the CEC. |  
| EFFICACIA  L’outcome chiave secondario (composito) e' l’occorrenza di uno qualsiasi dei seguenti eventi fino alla fine del trattamento parenterale:   TVP prossimale asintomatica (rilevata con ecografia), TVP sintomatica (prossimale o distale), EP non fatale o decesso legato a TEV.  Altri parametri secondari di efficacia:  • TEV sintomatico:  L’occorrenza di TEV sintomatico fino alla visita del Giorno 35 (decesso legato a TEV, EP non fatale o TVP sintomatica)  • L’occorrenza di TVP prossimale asintomatica, TVP sintomatica (prossimale o distale), EP non fatale o mortalita' per tutte le cause fino alla visita del Giorno 35    SICUREZZA  • L’occorrenza di sanguinamento non maggiore clinicamente rilevante (sanguinamento CRNM) fino a 7 giorni dopo l’interruzione di tutti i farmaci dello studio  • Occorrenza di sanguinamento maggiore fino al momento dell’interruzione del farmaco dello studio per via parenterale  • Occorrenza di sanguinamento CRNM fino al momento dell’interruzione del farmaco dello studio per via parenterale  • Occorrenza di sanguinamento maggiore dal momento dell’interruzione del farmaco dello studio per via parenterale fino al Giorno 35  • Occorrenza di sanguinamento CRNM dal momento dell’interruzione del farmaco dello studio per via parenterale fino al Giorno 35  • Occorrenza di sanguinamento maggiore fino al momento dell’interruzione del farmaco dello studio per via parenterale in pazienti con insufficienza renale grave (clearance della creatinina < 30 ml/min)  • Occorrenza di sanguinamento CRNM fino al momento dell’interruzione del farmaco dello studio per via parenterale in pazienti con insufficienza renale grave   • Occorrenza di sanguinamento maggiore fino a 7 giorni dopo l’interruzione di tutti i farmaci dello studio in pazienti con insufficienza renale grave  • Occorrenza di sanguinamento CRNM fino a 7 giorni dopo l’interruzione di tutti i farmaci dello studio in pazienti con insufficienza renale grave  • Occorrenza di ictus, stabilito dal CEC. |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| There will be a single interim efficacy and futility analysis of  the primary and secondary outcomes when approximately 50% of the  primary-endpoint evaluable patients have data (i.e., 2568 patients with  an evaluable primary outcome).  Efficacy and safety outcomes will be reviewed by the IDMC at the  following defined intervals:  • After 250 patients have completed follow-up  • After 750 patients have completed follow-up  • After 1500 patients have completed follow-up  • After 3000 patients have completed follow-up  • After 4500 patients have completed follow-up  • After 2568 patients have evaluable primary outcome data. This may  occur simultaneously with one of the above meetings if the meeting  criteria coincide. |  
| Sara' effettuata una sola analisi ad interim di efficacia e futilita' degli outcome primari e secondari quando sara' disponibile circa il 50% dei pazienti valutabili per l’endpoint primario (vale a dire 2568 pazienti con un outcome primario valutabile).  Gli outcome di efficacia e sicurezza saranno esaminati dall’IDMC ai seguenti intervalli definiti:  -Dopo che 250 pazienti avranno completato il follow-up (f-up),-Dopo che 750 pazienti avranno completato il f-up, -Dopo che 1500 pazienti avranno completato il f-up, -Dopo che 3000 pazienti avranno completato il f-up, -Dopo che 4500 pazienti avranno completato il f-up, -Dopo che 2568 pazienti disporranno di dati per l’outcome primario valutabile. Cio' potra' anche verificarsi in contemporanea ad uno dei sopra menzionati incontri. |  | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis | No | 
| E.6.2 | Prophylaxis | Yes | 
| 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 | 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 | Yes | 
| E.8.1.7.1 | Other trial design description | 
| doppio mascheramento |  
| double dummy |  | 
| E.8.2 | Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) | Yes | 
| 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 | 10 | 
| E.8.5 | The trial involves multiple Member States | Yes | 
| E.8.5.1 | Number of sites anticipated in the EEA | 136 | 
| 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 |  
| Brazil |  
| Canada |  
| Chile |  
| Croatia |  
| Hong Kong |  
| India |  
| Israel |  
| Korea, Republic of |  
| Mexico |  
| Peru |  
| Russian Federation |  
| Singapore |  
| South Africa |  
| Ukraine |  
| 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 |  | 
| 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 | 22 | 
| 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 | 26 | 
| E.8.9.2 | In all countries concerned by the trial days | 0 |