| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| Recurrence after resection for colon cancer |  | 
| E.1.1.1 | Medical condition in easily understood language | 
| Recurrence after resection for colon cancer |  | 
| E.1.1.2 | Therapeutic area | Diseases [C] - Cancer [C04] | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 20.0 |  
| E.1.2 | Level | PT |  
| E.1.2 | Classification code | 10009944 |  
| E.1.2 | Term | Colon cancer |  
| E.1.2 | System Organ Class | 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps) |  | 
| 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 | 
| The proportion of patients with peritoneal recurrence on contrast enhanced CT of the thorax and abdomen 36 months after resection of high-risk colon cancer. |  | 
| E.2.2 | Secondary objectives of the trial | 
| • The number of conversions from positive to negative peritoneal lavage cytology after one PIPAC procedure.
 • Completion rate of two adjuvant PIPAC treatments
 • Treatment related toxicity and complication rate
 • 1- and 2-year peritoneal recurrence free survival, based on CT of the thorax and abdomen.
 • 1-, 2- and 3-year recurrence free survival, based on CT of the thorax and abdomen
 • 1-, 3- and 5-year overall survival rate
 |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| • Radically resected colon cancer patients with adeno- or signet ring cell carcinomas with high-risk tumors defined as: perforated / pT4NanyM0 (UICC 8th edition) / pTanyNanyM1
 with radically resected PM including ovarian metastases
 • Performance status 0-1
 • Fertile women must use approved contraceptives (see below)
 Version 1, 18.06.2017 7
 • Age > 18 years
 • Written informed consent
 |  | 
| E.4 | Principal exclusion criteria | 
| Radiologically or clinically proven relapse. • Previous cytoreductive surgery (CRS) with HIPEC
 • Other malignant diagnosis within the last 2 years
 • Contraindications to laparoscopy (e.g. severe adhesions, peritonitis)
 • A history of allergic reaction to oxaliplatin or other platinum containing compounds
 • Renal impairment, defined as GFR < 50 ml/min, (Cockcroft-Gault Equation).
 • Myocardial insufficiency, defined as NYHA class > 2.
 • Impaired liver function defined as bilirubin ≥ 1.5 x UNL (upper normal limit).
 • Inadequate haematological function defined as ANC ≤ 1.5 x 109/l and platelets ≤ 100 x
 109/l.
 • Any other condition or therapy, which in the investigator’s opinion may pose a risk to the
 patient or interfere with the study objectives.
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| An estimated 25 % of patients with a pT4 or perforated primary colon tumor are expected to develop PM. Based on the preliminary results of PIPAC we expect an absolute risk reduction of 15% in an adjuvant setting. |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| 36 months from colon resection |  | 
| E.5.2 | Secondary end point(s) | 
| 1. Peritoneal recurrence free survival 2. Overall survival
 |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| 1. 12 and 24 months 2. 60 months
 |  | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis | Yes | 
| E.6.2 | Prophylaxis | Yes | 
| 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 | 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) | 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 | Yes | 
| 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 | Yes | 
| E.8.1.7.1 | Other trial design description |  | 
| 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 | No | 
| E.8.3 | The trial involves single site in the Member State concerned | Yes | 
| E.8.4 | The trial involves multiple sites in the Member State concerned | No | 
| 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 | 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 | 
| End of trial will be 5 years after colon resection, where survival data will be analysed. LVLS will be earlier, as this will be the CT 36 months after resection. |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 7 | 
| E.8.9.1 | In the Member State concerned months |  | 
| E.8.9.1 | In the Member State concerned days |  |