Synbiotics and Gastrointestinal Function Related Quality of Life After Colectomy for Cancer

Study Overview
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Brief Summary
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The aim of this double-blinded prospective randomised trial is to explore the potential benefits of early postoperative administration of Synbiotics (combination of prebiotics and probiotics) to patients who have undergone colectomy for cancer. The patients are randomised to either synbiotics or placebo administration at the day they are able to tolerate po liquid diet and for 15 days thereafter. Primary end points of the study will be: Assessment of gastrointestinal function-related quality of life at 1, 3 and 6 months postoperatively by the use of the validated questionnaire GIQLI (Gastrointestinal Quality of Life Index) Secondary end points will be: -Assessment of functional bowel disorders (diarrhea, constipation, etc) at 1, 3 and 6 months postoperatively based on the respective domains of the validated instrument EORTC QLQ-C30

Detailed Description
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The study patients are randomized before surgery to receive either synbiotics (Synbiotics group) or placebo (Control group). Equal randomization is accomplished using a computer-generated random allocation schedule. The method of allocation concealment is sequentially numbered sealed opaque envelopes technique. Both synbiotics and placebo preparations are in foil-sealed sachets stored in identical numbered containers. Both study products are white powders, identical in weight, smell, and taste. Thus, the identity of the specific product is blind to participants, support staff and investigators for the entire duration of the study period.

Official Title
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Synbiotics and Gastrointestinal Function Related Quality of Life After Colectomy for Cancer

Conditions
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Colorectal Neoplasms

Intervention / Treatment
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* Dietary Supplement: Synbiotics
* Dietary Supplement: Placebo


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Colectomy for histologically proven colorectal adenocarcinoma Exclusion Criteria: Pregnancy, hereditary cancer, history of inflammatory bowel disease, metastatic disease at presentation, emergency operation, major postoperative complications

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Supportive Care
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Synbiotics<br>A specific multistrain/multifi ber synbiotic composition of prebiotics and probiotics (Synbiotic Forte™, IONIA Pharmaceuticals, Athens, Greece) was administered at the active comparator arm of the study. It contained 10 [11] of each of four lactic acid bacteria (LAB): Pediococcus pentosaceus 5-33:3, Leuconostoc mesenteroides 32-77:1, Lactobacillus paracasei ssp. paracasei 19, and Lactobacillus plantarum 2362, and 2.5 g of each of the four fermentable fibers (prebiotics): b-glucan, inulin, pectin and resistant starch. The synbiotics were delivered in sachets and then mixed with water (12 g in 250 mLof water once daily). Th e treatment started on the day patients tolerated per os liquid intake (2nd-4th POD). The intervention period lasted 15 days. | Dietary Supplement: Synbiotics<br>* 12 gr in 250 cc of water once daily X 15 days<br>|
| Placebo Comparator: Placebo<br>The patients belonging to the placebo comparator arm received only the 4 fi bers and no LAB (12 gin 250 mLof water once daily for 15 days). All the subjects were interviewed by a dedicated research fellow (KP) and reactions to the product, and any adverse events occurring in the 15-day period were recorded. | Dietary Supplement: Placebo<br>* 12 gr in 250 cc of water once daily X 15 days<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Assessment of gastrointestinal function-related quality of life at 1, 3 and 6 months postoperatively |  | 2 years |