Mechanisms of Action on Rectal Motricity of Intrarectal Botulinum Toxin Injections
MECA-TOX
1 other identifier
interventional
21
1 country
1
Brief Summary
Previous studies have demonstrated the efficacy of this treatment in certain patients suffering from fecal incontinence, but it is not yet reimbursed in this indication as it is still in the evaluation phase. Indeed, little is known about botulinum toxin mechanisms of action. The aim of this study is to better understand the mechanisms of action of intra-rectal botulinum toxin injections, so that the investigators can identify the patients most likely to benefit from this treatment in the future.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for phase_3
Started Apr 2025
Typical duration for phase_3
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
August 2, 2023
CompletedFirst Posted
Study publicly available on registry
August 18, 2023
CompletedStudy Start
First participant enrolled
April 15, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
June 1, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
December 1, 2027
January 22, 2026
January 1, 2026
2.1 years
August 2, 2023
January 20, 2026
Conditions
Outcome Measures
Primary Outcomes (1)
high amplitude propagative contractions
The primary endpoint is the time to onset of high amplitude propagative contractions (HAPC) after instillation of DULCOLAX® in the sigmoid and rectum, before and 1 month after intrarectal botulinum toxin injections.
before and 1 month after intrarectal botulinum toxin injections.
Secondary Outcomes (5)
Characteristics of contractions in the rectum and sigmoid
before and 1 month after intrarectal botulinum toxin injections.
Probe expulsion
before and 1 month after intrarectal botulinum toxin injections.
Anal incontinence severity score
before and 1 month after botulinum toxin injections.
Quality of life score
before and 1 month after botulinum toxin injections.
Adverse events
at each visit, during 4 months
Study Arms (1)
intra-rectal botulinum toxin injections
EXPERIMENTALPatients with fecal incontinence who have failed conservative treatments and are candidates for intra-rectal botulinum toxin injections.
Interventions
Patients with fecal incontinence who have failed conservative treatments and are candidates for intra-rectal botulinum toxin injections.
Eligibility Criteria
You may qualify if:
- Active or predominantly active fecal incontinence with failure of 1st-line conservative treatments (normalization of transit, perineal re-education)
- Impairment of quality of life at investigator's discretion
- Patients at least 18 years of age
- Patients who have read and understood the information letter and signed the consent form
- Patients affiliated to the French Social Security system
You may not qualify if:
- General
- Pregnant women, women in labor, breastfeeding women, or women without proven contraception
- Patient deprived of liberty by administrative or judicial decision, or protected adult (under guardianship or trusteeship)
- Exclusive passive fecal incontinence
- Patient suffering from constipation (Rome IV criteria)
- Patient with an evolving inflammatory or cancerous digestive pathology
- Previous rectal surgery
- Linked to botulinum toxin injections
- Hypersensitivity to botulinum toxin or to one of the excipients (human albumin, sodium chloride)
- Neuromuscular junction pathology (myasthenia, Lambert-Eaton syndrome, etc.)
- Presence of infection at injection site(s)
- General anesthesia less than one month ago
- Association with aminoglycosides and anti-cholinesterase agents (risk of increased toxin effects)
- History of neurogenic damage such as polyradiculoneuritis
- History of dysphagia with esophageal or neurological stasis, swallowing disorders, inhalation pneumonitis
- +17 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Univesity Hospital, Rouen
Rouen, France, 76031, France
Related Publications (5)
Rao SS, Bharucha AE, Chiarioni G, Felt-Bersma R, Knowles C, Malcolm A, Wald A. Functional Anorectal Disorders. Gastroenterology. 2016 Mar 25:S0016-5085(16)00175-X 10.1053/j.gastro.2016.02.009. doi: 10.1053/j.gastro.2016.02.009. Online ahead of print.
PMID: 27144630BACKGROUNDXu X, Menees SB, Zochowski MK, Fenner DE. Economic cost of fecal incontinence. Dis Colon Rectum. 2012 May;55(5):586-98. doi: 10.1097/DCR.0b013e31823dfd6d.
PMID: 22513438BACKGROUNDDesprez C, Damon H, Meurette G, Mege D, Faucheron JL, Brochard C, Lambrescak E, Gourcerol G, Mion F, Wyart V, Sielezneff I, Siproudhis L, Etienney I, Ajamie N, Lehur PA, Duflot T, Bridoux V, Leroi AM; Club NEMO. Ten-year Evaluation of a Large Retrospective Cohort Treated by Sacral Nerve Modulation for Fecal Incontinence: Results of a French Multicenter Study. Ann Surg. 2022 Apr 1;275(4):735-742. doi: 10.1097/SLA.0000000000004251.
PMID: 32740249BACKGROUNDBridoux V, Gourcerol G, Kianifard B, Touchais JY, Ducrotte P, Leroi AM, Michot F, Tuech JJ. Botulinum A toxin as a treatment for overactive rectum with associated faecal incontinence. Colorectal Dis. 2012 Mar;14(3):342-8. doi: 10.1111/j.1463-1318.2011.02585.x.
PMID: 21689287BACKGROUNDGourcerol G, Benard C, Melchior C, Touchais JY, Ducrotte P, Menard JF, Bridoux V, Leroi AM. Botulinum toxin: an endoscopic approach for treating fecal incontinence. Endoscopy. 2016 May;48(5):484-8. doi: 10.1055/s-0034-1393242. Epub 2015 Oct 8.
PMID: 26448532BACKGROUND
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Charlotte DESPREZ
University Hospital, Rouen
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
August 2, 2023
First Posted
August 18, 2023
Study Start
April 15, 2025
Primary Completion (Estimated)
June 1, 2027
Study Completion (Estimated)
December 1, 2027
Last Updated
January 22, 2026
Record last verified: 2026-01
Data Sharing
- IPD Sharing
- Will not share