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Efficacy and Tolerability of a Simethicone-containing Evacuating Solution for Colorectal Cancer Screening Colonoscopy (CLEAN+)

6. juli 2026 opdateret af: Fundacion Clinic per a la Recerca Biomédica

Efficacy and Tolerability of a Simethicone-containing Evacuating Solution for Colorectal Cancer Screening Colonoscopy: a Randomized Parallel Comparative Trial CLEAN+

Study to evaluate the efficacy and tolerability of a simethicone-containing evacuating solution for colorectal cancer screening colonoscopy.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

818

Fase

  • Fase 4

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

  • Spanien
    • Barcelona
      • Barcelona, Barcelona, Spanien, 08036
        • Rekruttering
        • Hospital Clínic de Barcelona
        • Ledende efterforsker:
          • Maria Pellisé
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  1. Men and women aged 50 to 69.
  2. Have participated in the early detection program for colorectal cancer.
  3. Positive result in the fecal occult blood test (≥20 μg Hb/g feces).
  4. Scheduled screening colonoscopy at Hospital Clínic de Barcelona.
  5. Signed informed consent form.

Exclusion Criteria:

  1. Severe renal failure (grade IV or V) (Annex 6, Stages of Renal Impairment) and/or congestive heart failure (New York Heart Association Scale Class III and IV) (Annex 7, NYHA Scale).
  2. Colonoscopy within the last year.
  3. Barthel Index of <20 (Annex 5, Barthel Index) and who also meet the Rome IV Criteria for the diagnosis of functional constipation (Annex 8, Rome IV Criteria).
  4. Mental disability or severe mental disorder (schizophrenia and other psychotic disorders, recurrent severe major depressive disorders, severe obsessive-compulsive disorder, severe personality disorders, and bipolar disorders).
  5. Do not understand spoken or written Catalan or Spanish.
  6. Partial or total colon resection.
  7. Personal history of CRC or colorectal pathology that requires specific follow-up (ulcerative colitis, Crohn's disease, or colorectal adenomas).
  8. Terminal illness or serious illness/disability that contraindicates subsequent colon study.
  9. Gastrointestinal disorders that contraindicate the use of study products (gastric emptying disorders, gastrointestinal perforation or obstruction, ileus, toxic megacolon).
  10. Hypermagnesemia.
  11. Rhabdomyolysis.
  12. Phenylketonuria.
  13. Glucose-6-phosphate dehydrogenase deficiency.
  14. Hypersensitivity to the active ingredients of excipients.
  15. Pregnancy or breastfeeding.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Diagnostisk
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Clensia®
Clensia®, powder for oral solution in sachet. To be taken in two doses, 4 sachets dissolved in 200cc of water 9-12 hours before the examination and 4 sachets dissolved in 200cc of water 4 hours before the examination.
Medicin: Clensia®
Participants will take the treatment in two doses, 4 sachets dissolved in 200cc of water 9-12 hours before the examination and 4 sachets dissolved in 200cc of water 4 hours before the examination.
Eksperimentel: Citrafleet®
Citrafleet®, powder for oral solution in sachet. To be taken in two doses, 1 sachet dissolved in 200cc of water 9-12 hours before the examination and 1 sachet dissolved in 200cc of water 4 hours before the examination.
Medicin: Citrafleet®
Participants will take the treatment in two doses, 1 sachet dissolved in 200cc of water 9-12 hours before the examination and 1 sachet dissolved in 200cc of water 4 hours before the examination.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Adenoma detection rate
Tidsramme: week 2 (Colonoscopy visit)
Adenoma detection rate, defined as the proportion of patients with at least one adenoma in relation to the total number of subjects in each study group (Clensia® Group (Group A); Citrafleet® Group (Group B)).
week 2 (Colonoscopy visit)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Lesion detection rate
Tidsramme: week 2 (Colonoscopy visit)
Lesion detection rate, defined as the proportion of patients with at least one polyp in relation to the total number of subjects in each group.
week 2 (Colonoscopy visit)
Adenomas per colonoscopy
Tidsramme: week 2 (Colonoscopy visit)
Adenomas per colonoscopy, defined as the mean number of adenomas detected by colonoscopy in the subjects in each group.
week 2 (Colonoscopy visit)
Presence of foam
Tidsramme: week 2 (Colonoscopy visit)
The presence of foam using the CEBuS (Colon Endoscopic Bubble Scale), in which each colonic segment (right colon, transverse colon, left colon) is scored from 0 to 2 (0=no or minimal number of bubbles; 1=moderate amount of bubbles affecting 5-50% of the circumference, affecting the vision of the mucosa and requiring additional time to wash; 2=abundant bubbles occupying >50% of the circumference, obscuring the mucosa and require ring additional time to washing).
week 2 (Colonoscopy visit)
Presence of bubbles
Tidsramme: week 2 (Colonoscopy visit)
The presence of bubbles using the CEBuS (Colon Endoscopic Bubble Scale), in which each colonic segment (right colon, transverse colon, left colon) is scored from 0 to 2 (0=no or minimal number of bubbles; 1=moderate amount of bubbles affecting 5-50% of the circumference, affecting the vision of the mucosa and requiring additional time to wash; 2=abundant bubbles occupying >50% of the circumference, obscuring the mucosa and require ring additional time to washing).
week 2 (Colonoscopy visit)
Quality of colon cleansing
Tidsramme: week 2 (Colonoscopy visit)
The quality of colon cleansing using the Boston Scale, in which each colonic segment (right colon, transverse colon, and left colon) is scored from 0 to 3 (0=poor, 1=fair, 2=good, 3=excellent). A total score greater than or equal to 6 and greater than or equal to 2 in each segment will be considered adequate.
week 2 (Colonoscopy visit)
Need for washing tools during colonoscopy
Tidsramme: week 2 (Colonoscopy visit)
Need for washing tools during colonoscopy. The amount of wash water used during the colonoscopy to complete the test satisfactorily is counted. Likewise, the volume of simethicone used will be counted if it is considered necessary.
week 2 (Colonoscopy visit)
Cecal intubation rate
Tidsramme: week 2 (Colonoscopy visit)
Cecal intubation rate. The colonoscopy will be considered complete if the cecum has been reached; otherwise, it will be considered incomplete.
week 2 (Colonoscopy visit)
Cecal intubation time
Tidsramme: week 2 (Colonoscopy visit)
Cecal intubation time. Defined as the time elapsed between the introduction of the endoscope and reaching the cecal fundus.
week 2 (Colonoscopy visit)
Endoscope removal time
Tidsramme: week 2 (Colonoscopy visit)
Endoscope removal time. Defined as the time elapsed between reaching the cecal fundus and completion of the endoscopy, including the time spent cleaning the colon and excluding endoscopic treatment of lesions.
week 2 (Colonoscopy visit)
Requires repeat colonoscopy due to poor preparation
Tidsramme: week 2 (Colonoscopy visit)
Proportion of patients who, after undergoing colonoscopy, require repeat colonoscopy due to poor preparation, defined as a total score of less than 6 or less than 2 in one of the three segments according to the Boston Scale
week 2 (Colonoscopy visit)
Adherence to the intake of the preparation
Tidsramme: week 2 (Colonoscopy visit)
Adherence to the intake of the preparation assessed by compliance with the intake in three degrees: completely, more than 50%, less than 50% or not at all (Tolerability and satisfaction questionnaire).
week 2 (Colonoscopy visit)
Ease of taking the preparation
Tidsramme: week 2 (Colonoscopy visit)
Ease of taking the preparation assessed with a numerical assessment scale from 0=very difficult to 10=very easy (Tolerability and satisfaction questionnaire).
week 2 (Colonoscopy visit)
Palatability of the preparation
Tidsramme: week 2 (Colonoscopy visit)
Palatability of the preparation assessed with a numerical assessment scale from 0=very bad to 10=excellent (Tolerability and satisfaction questionnaire).
week 2 (Colonoscopy visit)
Willingness to repeat the intake of the preparation
Tidsramme: week 2 (Colonoscopy visit)
Willingness to repeat the intake of the preparation assessed as yes or no (Tolerability and satisfaction questionnaire).
week 2 (Colonoscopy visit)
Overall satisfaction with the intake of the preparation
Tidsramme: week 2 (Colonoscopy visit)
Overall satisfaction with the intake of the preparation assessed with a numerical rating scale from 0=very bad to 10=very good (Tolerability and satisfaction questionnaire).
week 2 (Colonoscopy visit)
Endoscopist's satisfaction with the cleaning of faecal remains and bubbles
Tidsramme: week 2 (Colonoscopy visit)
Endoscopist's satisfaction with the cleaning of faecal remains and bubbles, assessed with a numerical assessment scale from 0 = very dissatisfied to 10 = very satisfied (Data collection form).
week 2 (Colonoscopy visit)
Rate of adverse events
Tidsramme: week 2 (Colonoscopy visit) and week 4 (visit 2)
Rate of adverse events including symptoms such as nausea, vomiting, abdominal pain, abdominal bloating, headache, chills, dizziness and dry mouth, which will be assessed in the Tolerability and Satisfaction Questionnaire (Tolerability and Satisfaction Questionnaire).
week 2 (Colonoscopy visit) and week 4 (visit 2)

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Fundacion Clinic per a la Recerca Biomédica

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

18. maj 2026

Primær færdiggørelse (Anslået)

1. maj 2028

Studieafslutning (Anslået)

1. maj 2028

Datoer for studieregistrering

Først indsendt

26. september 2025

Først indsendt, der opfyldte QC-kriterier

6. juli 2026

Først opslået (Faktiske)

10. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

10. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

6. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 2025-523748-11-00

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Studerer et amerikansk FDA-reguleret enhedsprodukt

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