| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| Mild to moderate Ulcerative Colitis |  | 
| E.1.1.1 | Medical condition in easily understood language | 
| Ulcerative colitis, a disease of the colon (large intestine), that includes characteristic ulcers, or open sores |  | 
| E.1.1.2 | Therapeutic area | Diseases [C] - Digestive System Diseases [C06] | 
| 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 | 10045365 |  
| E.1.2 | Term | Ulcerative colitis |  
| E.1.2 | System Organ Class | 100000004856 |  | 
| 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 assess the effects of rFXIII on mucosal healing |  | 
| E.2.2 | Secondary objectives of the trial | 
| - To assess effects of rFXIII on clinical disease activity - To assess the safety of rFXIII
 - To assess the pharmacokinetics (PK) of rFXIII by FXIII activity systemically
 |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| - Male and female subjects between 18 and 64 years of age - Diagnosis of ulcerative colitis for at least 3 months from the time of initial diagnosis. The diagnosis must have been confirmed by historical endoscopy and histology. The severity of disease must have been confirmed by endoscopy at screening
 - Currently receiving oral aminosalicylates at approved doses for at least 6 weeks of at least 2 g/day. Doses of oral aminosalicylates should be stable for at least two weeks prior to dosing (Visit 2)
 |  | 
| E.4 | Principal exclusion criteria | 
| - Diagnosis of UC limited to the rectum (ulcerative proctitis only, defined as < 15 cm from the anal verge) - Requiring hospitalisation for current episode of severe UC
 - Use of biologic therapies for the treatment of UC within 12 weeks prior to dosing (Visit 2)
 - Treatment failures to anti-TNF-α agents (e.g. infliximab, adalimumab)
 - Use of immunosuppressant agents (e.g. azathioprine) within 4weeks prior to dosing (Visit 2)
 - Use of corticosteroids (oral, intravenous (i.v.), intramuscular (i.m.), or rectal ) within 14 days prior to dosing (Visit 2)
 - Use of enemas (corticosteroid or aminosalicylate) within 14 days prior to screening (Visit 1)
 - Use of cyclosporine, tacrolimus, D-penicillamine, leflunomide, methotrexate, mycophenolate mofetil, or thalidomide within 4 weeks prior to dosing (Visit 2)
 - Currently receiving total parenteral nutrition
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Endoscopic remission defined as a modified Baron score of 0 |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point |  | 
| E.5.2 | Secondary end point(s) | 
| 1. Disease activity: - Remission (clinical and endoscopic) defined by a UC-DAI score of ≤ 1 with 0 for
 rectal bleeding and 0 for stool frequency and no mucosal friability (modified Baron
 score ≤ 1)
 2.  Safety:
 - Number of adverse events (AEs)
 3. PK of rFXIII (based on the Berichrom® assay):
 - Clearance (CL) and maximal concentration (Cmax) systemically
 |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| 1. Disease activity at trial Week 8 2. Safety through trial Week 10
 3. PK of rFXIII after a single dose
 |  | 
| 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 | Yes | 
| E.6.8 | Bioequivalence | No | 
| E.6.9 | Dose response | No | 
| 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 | 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 | 30 | 
| 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 | 
| European Union |  
| Croatia |  
| Russian Federation |  
| Ukraine |  | 
| E.8.7 | Trial has a data monitoring committee | No | 
| 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 | 1 | 
| E.8.9.1 | In the Member State concerned months | 3 | 
| E.8.9.1 | In the Member State concerned days | 6 | 
| 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 | 3 | 
| E.8.9.2 | In all countries concerned by the trial days | 6 |