Impact of Supplementation With Synbiotics and Prebiotics on Cognitive Decline Associated With Neoadjuvant Chemotherapy in First-line Patients With Breast Cancer

March 6, 2026 updated by: Jose Alfonso Cruz-Ramos, Instituto Jalisciense de Cancerologia

Impact of Supplementation With Synbiotics and Prebiotics on Cognitive Decline Associated With Neoadjuvant Chemotherapy in First-line Patients With Breast Cancer at Stages IB to IIIC of Any Molecular Subtype.

The goal of this research protocol is to evaluate whether supplementation with: synbiotics (probiotics with agave inulin), synbiotics with vitamid D or prebiotics (agave inulin) can reduce cognitive decline in patients with breast cancer undergoing neoadjuvant chemotherapy. It will also assess the safety of these supplements. The main questions it aims to answer are:

Does supplementation with synbiotics and prebiotics decrease cognitive decline in participants? What adverse effects do participants experience while taking these supplements? Are there significant changes in inflammation markers (calprotectin and C-reactive protein) before and after treatment?

Participants will:

Receive either synbiotics, prebiotics or none daily for 4 months. Undergo cognitive assessments using the CERAD neuropsychological battery at the beginning and end of the study.

Provide blood and stool samples for analysis of inflammation markers. Report any adverse effects experienced during the supplementation period.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Enrolling by invitation

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The primary aim of this research is to investigate the effects of supplementation with synbiotics and prebiotics on cognitive decline in patients diagnosed with breast cancer who are undergoing neoadjuvant chemotherapy.

This study will utilize a double-blind, randomized design. Group 1: synbiotics (Lactobacillus acidophilus (LA3) Lactobacillus delbrueckii subsp. bulgaricus (SP 96) Lactobacillus casei (BGP 93) Lactobacillus plantarum (BG 112) Lactobacillus sporogenes, Lactobacillus rhamnosus and Agave Inulin) Group 2: synbiotics with D-vitamin (Inulin, Lactobacillus rhamnosus, Lactobacillus plantarum, D3 Vitamin/Colecalciferol, Lactobacillus bulgaricus, Lactobacillus paracasei, Lactobacillus lactis) Group 3: prebiotics (agave inulin) Group 4: None

Duration: The intervention will last for a total of 4 months, coinciding with the chemotherapy treatment period.

At the beginning of the study and at the end of the 4-month period, participants will undergo cognitive assessments using the CERAD neuropsychological battery. Additionally, blood and stool samples will be collected to analyze inflammation markers.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
80

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Mexico
    • Jalisco
      • Zapopan, Jalisco, Mexico, 44660
        • Instituto Oncológico Nacional

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age: Participants must be between 18 and 75 years old.
  • Diagnosis: Must have a confirmed diagnosis of breast cancer at stages IB to IIIC.
  • Treatment Status: Participants should be scheduled to receive neoadjuvant chemotherapy as part of their treatment plan.
  • Cognitive Function: Must demonstrate baseline cognitive function as assessed by the CERAD neuropsychological battery, indicating no severe cognitive impairment.
  • Informed Consent: Participants must provide written informed consent to participate in the study and comply with all study procedures.
  • Health Status: Should not have any significant comorbidities that could interfere with the study outcomes, such as severe psychiatric disorders or neurological conditions.
  • No Previous Probiotic Use: Must not have used probiotics or prebiotics in the month prior to the study

Exclusion Criteria:

  • Severe Cognitive Impairment: Participants with significant cognitive impairment or dementia as assessed by the CERAD neuropsychological battery will be excluded.
  • Severe Comorbidities: Participants with serious comorbid conditions, such as uncontrolled diabetes, severe cardiovascular diseases, or active infections, will be excluded.
  • Psychiatric Disorders: Individuals with a history of severe psychiatric disorders that could affect cognitive function or compliance with the study protocol will be excluded.
  • Neurological Conditions: Participants with neurological disorders such as multiple sclerosis, Parkinson's disease, or other conditions that affect cognitive function will be excluded.
  • Pregnant or Lactating Women: Pregnant or breastfeeding women will not be eligible to participate in the study.
  • Allergies: Individuals with known allergies to any of the components of the synbiotics or prebiotics used in the study will be excluded.
  • Non-compliance Risk: Participants who are deemed at risk of non-compliance with study procedures or follow-up will be excluded.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Supportive Care
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Synbiotic

The intervention will last for a total of 4 months, coinciding with the chemotherapy treatment period. Each participant will take one capsule daily.

Capsule: Lactobacillus acidophilus (LA3) Lactobacillus delbrueckii subsp. bulgaricus (SP 96) Lactobacillus casei (BGP 93) Lactobacillus plantarum (BG 112) Lactobacillus sporogenes, Lactobacillus rhamnosus and Agave Inulin)
Dietary supplement: Synbiotics Blend
Lactobacillus and inulin
Active Comparator: Synbiotic with vitamin D3

The intervention will last for a total of 4 months, coinciding with the chemotherapy treatment period. Each participant will take one capsule daily.

Capsule: Inulin, Lactobacillus rhamnosus, Lactobacillus plantarum, D3 Vitamin/Colecalciferol, Lactobacillus bulgaricus, Lactobacillus paracasei, Lactobacillus lactis)
Dietary supplement: Synbiotics + Vitamin D
Lactobacillus, inulin and colecalciferol.
Active Comparator: Prebiotic

The intervention will last for a total of 4 months, coinciding with the chemotherapy treatment period. Each participant will take one capsule daily.

Capsule: Agave inulin.
Dietary supplement: Prebiotic
Agave Inulin
No Intervention: No synbiotic/prebiotic
Participants in this arm won't have an intervention.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Neuropsychological battery
Time Frame: Before the first cicle of chemotherapy and intervention, and after the four months of cancer treatment and intervention.
Cognitive assessments using the CERAD neuropsychological battery.
Before the first cicle of chemotherapy and intervention, and after the four months of cancer treatment and intervention.

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
C-reactive Protein
Time Frame: Before the first cicle of chemotherapy and intervention, and after the four months of cancer treatment and intervention.
Serum C-reactive Protein
Before the first cicle of chemotherapy and intervention, and after the four months of cancer treatment and intervention.
Calprotectin
Time Frame: Before the first cicle of chemotherapy and intervention, and after the four months of cancer treatment and intervention.
Calprotectine in stool sample
Before the first cicle of chemotherapy and intervention, and after the four months of cancer treatment and intervention.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Instituto Jalisciense de Cancerologia

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
University of Guadalajara
Instituto Tecnológico y de Estudios Superiores de Occidente
Instituto Oncológico Nacional

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
February 27, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
February 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 6, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 6, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 12, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 12, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 6, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • PRO-106-25

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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