Efficacy and Safety of mAnnitol in Bowel Preparation During Elective Colonoscopy and Comparison With Moviprep®

The purpose of this dose finding/comparative efficacy study is to first single out the most appropriate dose of mannitol for bowel preparation (phase II) and, subsequently, demonstrate the non-inferiority of the efficacy of single dose mannitol vs standard split 2L PEG ASC (Moviprep®) (phase III) in bowel preparation for colonoscopy .

Study Start and Study Completion dates relative to the Phase II/III are reported here:

Phase II (Patients n. 183)

* Date of first enrolment: 22 June 2020
* Date LPLV: 12 November 2020

Phase III (Patients n. 703)

* Date of first enrolment: 2 March 2021
* Date LPLV: 16 July 2021

Date on which the study was entered in the EudraCT database: 13 October 2020

Eligibility Criteria:
Inclusion Criteria:

1. Ability of patient to consent and provide signed written informed consent
2. Age ≥ 18 years
3. Males and females scheduled for elective (screening, surveillance or diagnostic) colonoscopy to be prepared and performed according to the European Society of Gastrointestinal Endoscopy (ESGE) Guideline
4. Patients willing and able to complete the entire study and to comply with instructions

Exclusion Criteria:

1. Pregnancy or breastfeeding. Females of childbearing potential must have a negative pregnancy test at Visit 2 and must practice one of the following methods of birth control throughout the study period (unless postmenopausal or surgically sterile, or whose sole sexual partner has had a successful vasectomy): oral, implantable, or injectable contraceptives (for a minimum of three months before study entry) in combination with a condom; intrauterine device in combination with a condom; double barrier method (condom and occlusive cap with spermicidal foam/gel/film/cream/suppository).
2. Severe renal failure: glomerular filtration rate (eGFR) \< 30 ml/min/1.73 m2 estimated by means of simplified MDRD equation.
3. Severe heart failure: NYHA Class III-IV.
4. Severe anaemia (Hb ≤ 8 g/dl).
5. Severe acute and chronically active Inflammatory Bowel Disease; patients in clinical remission (Crohn's Disease Activity Index - CDAI \< 150 for Crohn Disease and Partial Mayo Score ≤ 2 for Ulcerative Colitis) are allowed.
6. Chronic liver disease Child-Pugh class B or C.
7. Electrolyte disturbances (Na, Cl, K, Ca or P out of normal ranges).
8. Recent (\< 6 months) symptomatic acute ischemic heart disease.
9. History of significant gastrointestinal surgeries, including colon resection, sub-total colectomy, abdominoperineal resection, de-functioning colostomy or ileostomy, Hartmann's procedure and other surgeries involving the structure and function of the colon.
10. Use of laxatives, colon motility altering drugs and/or other substances (e.g. simethicone) that can affect bowel cleansing or visibility during colonoscopy within 24 hours prior to colonoscopy.
11. Suspected bowel obstruction or perforation.
12. Indication for partial colonoscopy.
13. Patients who have received an investigational drug or therapy within 5 half-lives of the first visit.
14. Patients previously screened for participation in this study.
15. Hypersensitivity to the active ingredients or to any of the excipients of the study drugs.
16. Contraindication to Moviprep® (only for phase III).