Mode
Text Size
Log in / Sign up
Phase 3 N=886 Randomized Single-blind Diagnostic

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

Elective Colonoscopy

Enrolled (actual)
886
Serious AEs
0.5%
Results posted
Dec 2025
Primary outcome: Primary: Phase II - Dose Finding: Proportion of Patients With Adequate Bowel Cleansing — 0.75; 0.94; 0.94 Proportion of patients

Study Design & Population

Study type
Interventional
Phase
Phase 3
Interventions
Phase II: NTC015 low dose (Drug); Phase II: NTC015 medium dose (Drug); Phase II: NTC015 high dose (Drug); Phase III: NTC015 selected dose (Drug); Phase III: Polyethylene glycol plus ascorbate solution (2L PEG ASC) (Drug)
Age
Adult, Older Adult · 18+ yrs
Sex
All
Sponsor
NTC srl
Primary completion
Jul 2021

Outcome Measures

OutcomeResultp-value
PRIMARY
Phase II - Dose Finding: Proportion of Patients With Adequate Bowel Cleansing
0.75; 0.94; 0.94
PRIMARY
Phase III - Non-inferiority: Proportion of Patients With Adequate Bowel Cleansing
0.91; 0.95
SECONDARY
Phase II - Dose Finding: Caecal Intubation Rate
0.92; 1; 1
SECONDARY
Phase II - Dose Finding: Adherence to Bowel Preparation
60; 54; 49
SECONDARY
Phase II - Dose Finding: Ease of Use
9.6; 9.3; 9.1
SECONDARY
Phase II - Dose Finding: Willingness to Reuse the Preparation
60; 51; 46; 0; 3; 3
SECONDARY
Phase II - Dose Finding: Treatment Acceptability
9.2; 8.3; 8.0
SECONDARY
Phase II - Pharmacokinetic Parameter: Peak Plasma Concentration
0.6304; 1.0236; 1.3729
SECONDARY
Phase II - Pharmacokinetic Parameter: Time to Maximum Concentration
1.1173; 1.3636; 1.4488
SECONDARY
Phase II - Pharmacokinetic Parameter: Area Under the Curve
2.2313; 4.1591; 5.8476
SECONDARY
Phase II - Pharmacokinetic Parameter: Terminal Elimination Half Life
2.5838; 2.4186; 2.6782
SECONDARY
Phase III - Non-inferiority: Adenoma Detection Rate
98; 103; 235; 244
SECONDARY
Phase III - Non-inferiority: Ottawa Bowel Preparation Scale (OBPS)
4.4; 3.6
SECONDARY
Phase III - Non-inferiority: Caecal Intubation Rate
327; 345; 6; 2
SECONDARY
Phase III - Non-inferiority: Bowel Cleansing Impact Review (BOCLIR) (Italian Sites Only)
23.5; 31.5
SECONDARY
Phase III - Non-inferiority: Adherence to Bowel Preparation With Mannitol and With Moviprep®.
341; 341; 0; 6
SECONDARY
Phase III - Non-inferiority: Ease of Use
9.3; 8.5
SECONDARY
Phase III - Non-inferiority: Willingness to Reuse the Preparation
331; 272; 10; 75
SECONDARY
Phase III - Non-inferiority: Treatment Acceptability
8.3; 5.6

Summary

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 .

Eligibility Criteria

Inclusion Criteria

  • Ability of patient to consent and provide signed written informed consent
  • Age ≥ 18 years
  • 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
  • Patients willing and able to complete the entire study and to comply with instructions

Exclusion Criteria

  • 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).
  • Severe renal failure: glomerular filtration rate (eGFR) < 30 ml/min/1.73 m2 estimated by means of simplified MDRD equation.
  • Severe heart failure: NYHA Class III-IV.
  • Severe anaemia (Hb ≤ 8 g/dl).
  • 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.
  • Chronic liver disease Child-Pugh class B or C.
  • Electrolyte disturbances (Na, Cl, K, Ca or P out of normal ranges).
  • Recent (< 6 months) symptomatic acute ischemic heart disease.
  • 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.
  • 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.
  • Suspected bowel obstruction or perforation.
  • Indication for partial colonoscopy.
  • Patients who have received an investigational drug or therapy within 5 half-lives of the first visit.
  • Patients previously screened for participation in this study.
  • Hypersensitivity to the active ingredients or to any of the excipients of the study drugs.
  • Contraindication to Moviprep® (only for phase III).
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT04759885). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.

Back to search