| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| Advanced and pre-treated Ewing’s Sarcoma |  | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 9.1 |  
| E.1.2 | Level | LLT |  
| E.1.2 | Classification code | 10015562 |  
| E.1.2 | Term | Ewing's sarcoma metastatic |  | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 9.1 |  
| E.1.2 | Level | LLT |  
| E.1.2 | Classification code | 10015564 |  
| E.1.2 | Term | Ewing's sarcoma recurrent |  | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 9.1 |  
| E.1.2 | Level | PT |  
| E.1.2 | Classification code | 10015562 |  
| E.1.2 | Term | Ewing's sarcoma metastatic |  | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 9.1 |  
| E.1.2 | Level | PT |  
| E.1.2 | Classification code | 10015564 |  
| E.1.2 | Term | Ewing's sarcoma recurrent |  | 
| 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 | 
| The main objective of this trial is to determine the effectiveness of oral treosulfan in patients with advanced pre-treated Ewing's Sarcoma. |  | 
| E.2.2 | Secondary objectives of the trial | 
| The secondary objectives include: 1. Event-free survival
 2. Overall survival
 3. Toxicity
 4. Duration of response
 5. Time to progression/relapse
 6. Assessment of the correlation between the formation and repair of treosulfan-induced DNA interstrand crosslinks (ICL) on response and toxicity
 
 |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| 1. Age 3 - 50 years 2. Histologically proven Ewing’s sarcoma/Peripheral Neuroectodermal Tumour
 3. Patients with advanced, refractory disease who have failed at least one course of conventional chemotherapy and for whom no curative option exists.
 4 .Measurable disease, defined by RECIST
 5. Evidence of disease progression within the preceding 8 weeks
 6. Adequate blood counts and biochemical profile
 7. WHO Performance status 0-2 (patients > =16 years); or Lansky Performance Status > =30. (n.b. patients with WHO performance status 3 due to spinal disease will be eligible provided they are otherwise medically well)
 8. Patient able to comply with protocol treatment (swallow capsules) and follow up
 9. Life expectancy of 3 months or greater
 10. Written informed consent of patient or parent/legal guardian.
 |  | 
| E.4 | Principal exclusion criteria | 
| 1. Newly diagnosed, or resectable Ewing’s sarcoma 2. Pregnant/lactating women, or women of child bearing potential unless using effective contraception
 3. Concurrent treatment with any other anti-cancer therapy, except palliative radiotherapy to non-target lesions
 4. Concurrent treatment with other experimental drugs
 5. Concurrent treatment with growth factors
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Primary endpoint: Objective response rate achieved using RECIST |  | 
| 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 | Yes | 
| E.6.5 | Efficacy | Yes | 
| E.6.6 | Pharmacokinetic | No | 
| E.6.7 | Pharmacodynamic | No | 
| 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 | No | 
| E.8.1.1 | Randomised | No | 
| E.8.1.2 | Open | No | 
| E.8.1.3 | Single blind | No | 
| E.8.1.4 | Double blind | No | 
| E.8.1.5 | Parallel group | No | 
| 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) | Information not present in EudraCT | 
| E.8.2.2 | Placebo | Information not present in EudraCT | 
| E.8.2.3 | Other | Information not present in EudraCT | 
| 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 | 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 | Information not present in EudraCT | 
| 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 | 2 | 
| E.8.9.1 | In the Member State concerned months | 0 | 
| E.8.9.1 | In the Member State concerned days | 0 |