Comparison of Bowel Cleansing Regimens Prior to Colonoscopy (PRECOL2011-1)

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
National Cancer Institute, Naples Identifier:
First received: July 23, 2012
Last updated: November 27, 2015
Last verified: November 2015
The purpose of this study is to to compare two bowel preparation regimens of patients who will undergo colonoscopy, in terms of quality of bowel preparation and in terms of patient satisfaction.

Condition Intervention Phase
Patients Undergoing Elective Colonoscopy
Drug: polyethylene glycole (PEG) solution
Drug: sodium picosulphate and magnesium citrate solution
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: PRECOL2011-1: Sodium Picophosphate and Magnesium Citrate Versus Polyethylene Glycol as Evacuating Treatment Prior to Colonoscopy: Phase IV Randomized Trial.

Resource links provided by NLM:

Further study details as provided by National Cancer Institute, Naples:

Primary Outcome Measures:
  • Boston Bowel Preparation Scale value [ Time Frame: at time of colonscopy ] [ Designated as safety issue: No ]
    evaluated by two endoscopists who are blinded to treatment assigned at randomization

  • patient reported acceptability score [ Time Frame: just prior to colonscopy ] [ Designated as safety issue: No ]
    using visual analog scale

Secondary Outcome Measures:
  • percent of bowel cleansing regimen dose assumed as reported by patient [ Time Frame: just prior to colonoscopy ] [ Designated as safety issue: No ]

Estimated Enrollment: 525
Study Start Date: November 2011
Estimated Study Completion Date: December 2016
Estimated Primary Completion Date: July 2016 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: PEG
polyethylene glycol solution 2 liters
Drug: polyethylene glycole (PEG) solution
Active Comparator: NapP
Sodium picosulphate and magnesium citrate solution 300 ml
Drug: sodium picosulphate and magnesium citrate solution


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

• Subjects who are candidate to undergo colonoscopy: Diagnosis Screening Follow-up after previous polypectomy

  • Informed consent
  • Age > 18 years

Exclusion Criteria:

  • Previous colonic resection
  • Severe inflammatory bowel disease (IBD)
  Contacts and Locations
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Please refer to this study by its identifier: NCT01649674

Presidio Ospedaliero Villa d'Agri
Marsicovetere, Italy
AO Fatebenefratelli ed Oftalmico
Milano, Italy
A.O.U. Seconda Universita di Napoli
Napoli, Italy
Clinica Mediterranea
Napoli, Italy
Istituto Nazionale dei Tumori
Napoli, Italy
Presidio Ospedaliero Ascalesi
Napoli, Italy
Presidio Ospedaliero Maresca
Torre del Greco, Italy
Sponsors and Collaborators
National Cancer Institute, Naples
Principal Investigator: Valentina D'Angelo, M.D. National Cancer Institute, Naples
Principal Investigator: Mario de Bellis, M.D. National Cancer Institute, Naples
  More Information

Responsible Party: National Cancer Institute, Naples Identifier: NCT01649674     History of Changes
Other Study ID Numbers: PRECOL2011-1  2011-000587-10 
Study First Received: July 23, 2012
Last Updated: November 27, 2015
Health Authority: Italy: Ethics Committee

Additional relevant MeSH terms:
Citric Acid
Magnesium citrate
Pharmaceutical Solutions
Picosulfate sodium
Calcium Chelating Agents
Chelating Agents
Gastrointestinal Agents
Molecular Mechanisms of Pharmacological Action
Sequestering Agents processed this record on May 26, 2016