| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated  | 
| Prevention of thromboembolic events in ESRD patients on hemodialysis who are at risk for thromboembolic events | 
 
| Prevenzione di eventi tromboembolici in Pazienti ESRD in emodialisi, a rischio per eventi tromboembolici. | 
 
 
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| E.1.1.1 | Medical condition in easily understood language  | 
| Prevention of blood clots in end-stage renal disease patients | 
 
| Prevenzione di coaguli di sangue in Pazienti con malattia renale allo stadio terminale | 
 
 
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| E.1.1.2 | Therapeutic area  | Diseases [C] - Cardiovascular Diseases [C14] | 
| MedDRA Classification | 
| 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 clinically assess the safety of different doses of osocimab administered subcutaneously once a month as compared to placebo | 
 
| Valutare clinicamente la sicurezza di dosi diverse di Osocimab, somministrato per via sottocutanea una volta al mese durante la fase di trattamento principale, rispetto a placebo | 
 
 
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| E.2.2 | Secondary objectives of the trial  | 
| To assess the change of key pharmacodynamic parameter from baseline | 
 
| Valutare la variazione del principale parametro PD rispetto al basale | 
 
 
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| E.2.3 | Trial contains a sub-study  |  No  | 
| E.3 | Principal inclusion criteria  | 
• Participants must be at least 18 years of age • Patients with end-stage renal disease on hemodialysis (including hemodiafiltration) for =3 months, receiving dialysis at least 9 hours a week and stable in the view of the investigator • Body weight of at least 50 kg • Male and/or female. Contraceptive use by men or women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies. | 
 
I partecipanti sono ritenuti eleggibili per lo studio soltanto se si applicano tutti i seguenti criteri: Età 1.	I partecipanti devono avere almeno 18 anni Tipologia del partecipante e caratteristiche della malattia 2.	Pazienti con malattia renale allo stadio terminale in emodialisi (inclusa emodiafiltrazione) da =3 mesi, sottoposti a dialisi per almeno 9 ore a settimana e considerati stabili dallo sperimentatore Peso 3.	Peso corporeo di almeno 50 kg Sesso 4.	Pazienti di sesso maschile e/o femminile Il metodo contraccettivo utilizzato dai pazienti di sesso maschile o femminile deve essere conforme alle normative locali in materia di contraccezione per i partecipanti a studi clinici. Per maggiori informazioni consultare la sezione 10.4. Consenso informato 5.	Capacità di fornire il consenso informato firmato, descritto nella sezione 10.1.3, che include la conformità ai requisiti e alle restrizioni elencati nel consenso informato stesso (ICF) e in questo protocollo | 
 
 
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| E.4 | Principal exclusion criteria | 
• Recent (<6 months before screening) clinically significant bleeding • Hemoglobin (Hb) < 9.0 g/dL at screening • Platelet count < 100 x 109/L • aPTT or PT > ULN (upper limit of normal) • Hepatic disease associated with ALT > 3x ULN, or total bilirubin >2x ULN with direct bilirubin > 20% of the total • Sustained uncontrolled hypertension (diastolic blood pressure =100 mmHg and/or systolic blood pressure = 180 mmHg) • Known intracranial neoplasm, arteriovenous malformation or aneurysm • Known bleeding disorders e.g. von-Willebrand disease or Hemophilia A, B or C • Recent (<3 months before screening) thromboembolic event, e.g. acute coronary syndrome, stroke or VTE (except dialysis access thrombosis) • Recent (<3 months before screening) major surgery or scheduled major surgery during study participation • Scheduled living donor renal transplant during study participation • Persistent heart failure as classified by the New York Heart Association (NYHA) classification of 3 or higher • Receiving antiplatelet therapy except daily ASA = 150 mg/day • Receiving anticoagulation in therapeutic doses, other than standard anticoagulation during the hemodialysis procedure | 
 
I partecipanti sono esclusi dallo studio qualora si applichi uno qualsiasi dei seguenti criteri: Condizioni mediche 1.	Emorragia clinicamente significativa recente (<6 mesi prima dello screening) 2.	Emoglobina (Hb) <9,0 g/dl 3.	Conta delle piastrine <100 x 109/l 4.	aPTT o PT > ULN (limite superiore rispetto al normale) 5.	Malattia epatica associata ad ALT >3 x ULN o bilirubina totale >2 x ULN con bilirubina diretta >20% della bilirubina totale 6.	Ipertensione sostenuta non controllata (pressione arteriosa diastolica =100 mmHg e/o pressione arteriosa sistolica =180 mmHg) 7.	Neoplasia intracranica nota, malformazione arterovenosa o aneurisma 8.	Disturbi emorragici noti, ad es. malattia di von Willebrand o emofilia A, B o Cm 9.	Evento tromboembolico recente (<3 mesi prima dello screening), ad es. sindroe coronarica acuta, ictus o TEV (ad esclusione della trombosi dell’accesso dialitico) 10.	Intervento chirurgico maggiore recente (<3 mesi prima dello screening) o programmato durante la partecipazione allo studio 11.	Trapianto renale programmato da donatore vivente durante la partecipazione allo studio 12.	Insufficienza cardiaca persistente di classe III o superiore in base alla classificazione della New York Heart Association (NYHA) 13.	Assunzione di terapia antiaggregante, ad esclusione di trattamento giornaliero con ASA (acido acetilsalicilico) =150 mg/die 14.	Assunzione di anticoagulanti in dosi terapeutiche, diversi da anticoagulanti standard durante la procedura di emodialisi 15.	Aspettativa di vita inferiore a 6 mesi 16.	Tumore maligno in atto che necessita di trattamento durante la partecipazione allo studio (ad esclusione del carcinoma cutaneo non melanoma o del carcinoma cervicale in situ) 17.	Ipersensibilità nota al farmaco sperimentale o ai suoi eccipienti Esperienza precedente/concomitante di studio clinico 18.	Partecipazione a un altro studio clinico con un farmaco sperimentale entro 30 giorni oppure, se di durata superiore, entro 5 emivite dello stesso, prima della randomizzazione e durante lo studio | 
 
 
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| E.5 End points | 
| E.5.1 | Primary end point(s) | 
• Composite of major and clinically-relevant non-major bleeding events (in alignment with ISTH guidelines), as assessed by blinded Central Independent Adjudication Committee (CIAC) • Composite of moderate and severe AEs and SAEs | 
 
•	Composito di eventi emorragici maggiori o non maggiori ma clinicamente rilevanti (in accordo con le linee guida ISTH), in base alla valutazione in cieco del Comitato di Validazione Centrale Indipendente (CIAC) •	Composito di AE e SAE moderati e gravi | 
 
 
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| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| From the first dose at month 1 and up to 6 months | 
 
| Dalla prima dose al mese 1 fino ai 6 mesi | 
 
 
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| E.5.2 | Secondary end point(s) | 
• Activated partial thromboplastin time (aPTT) at trough levels measured by the kaolin-trigger method and analyzed as ratio to baseline  • Factor XIa (FXIa) activity at trough levels assessed with an aPTT-based coagulation test using FXI deficient plasma and analyzed as ratio to baseline | 
 
| •	Tempo di tromboplastina parziale attivata (aPTT), attività del FXIa presente ai livelli di valle del farmaco, dopo 6 mesi | 
 
 
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| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| At baseline and after 6 months | 
 
| Al basale e dopo 6 mesi | 
 
 
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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 |  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 |  Yes  | 
| E.6.8 | Bioequivalence |  No  | 
| E.6.9 | Dose response |  Yes  | 
| E.6.10 | Pharmacogenetic |  Yes  | 
| 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.8.2.4 | Number of treatment arms in the trial | 4 | 
| 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 | 8 | 
| E.8.5 | The trial involves multiple Member States |  Yes  | 
| E.8.5.1 | Number of sites anticipated in the EEA | 93 | 
| 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 | 
| Austria | 
 
| Belgium | 
 
| Bulgaria | 
 
| China | 
 
| Czech Republic | 
 
| France | 
 
| Greece | 
 
| Hungary | 
 
| Israel | 
 
| Italy | 
 
| Japan | 
 
| Lithuania | 
 
| Netherlands | 
 
| Poland | 
 
| Portugal | 
 
| Russian Federation | 
 
| Spain | 
 
| Ukraine | 
 
| United States | 
 
 
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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 end of the study is defined as the date of the last visit of the last subject in the study globally (LVLS) | 
 
| LVLS | 
 
 
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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 | 2 | 
| E.8.9.1 | In the Member State concerned months | 2 | 
| E.8.9.1 | In the Member State concerned days | 15 | 
| E.8.9.2 | In all countries concerned by the trial years | 2 | 
| E.8.9.2 | In all countries concerned by the trial months | 2 | 
| E.8.9.2 | In all countries concerned by the trial days | 15 |