Palmitoleic Acid Combined With Infliximab for Promoting Intestinal Mucosal Healing in Crohn's Disease

February 11, 2026 updated by: Sheng-hong Zhang, Chinese Medical Association

A Randomized, Controlled Trial Investigating the Efficacy of Palmitoleic Acid Combined With Infliximab in Promoting Intestinal Mucosal Healing in Patients With Crohn's Disease

This study aims to evaluate whether the combination of palmitoleic acid with infliximab can improve intestinal mucosal healing in patients with Crohn's disease compared with infliximab alone.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

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

This is a prospective, randomized, controlled, open-label clinical study designed to evaluate the efficacy of palmitoleic acid combined with infliximab in patients with Crohn's disease.

Eligible patients will be randomly assigned to receive either intravenous infliximab at standard clinical doses plus daily oral palmitic acid supplementation, or intravenous infliximab alone. The primary endpoint is complete mucosal healing at Week 26. Secondary endpoints include endoscopic remission, endoscopic response, clinical remission and clinical response at Week 26.

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.
400

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.
  • Phase 4

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:

  1. Adult patients aged 18 to 75 years.
  2. Established diagnosis of Crohn's disease confirmed by radiologic, histologic, or endoscopic evidence.
  3. Active Crohn's disease at screening, defined as a Crohn's Disease Activity Index (CDAI) score between 220 and 450 (inclusive).
  4. Adequate cardiac, renal, and hepatic function, as assessed by the investigator based on screening laboratory tests, physical examination, and medical history, without findings that would pose an undue risk for study participation.
  5. Willingness and ability to provide written informed consent.
  6. Agreement to undergo all scheduled study procedures, including up to 3 endoscopic evaluations.

Exclusion Criteria:

  1. Use of any biologic therapy (e.g., infliximab, adalimumab, ustekinumab, vedolizumab) within 8 weeks prior to screening.
  2. Use of supplements containing fish oil or other lipid supplements (e.g., macadamia oil, krill oil, flaxseed, primrose oil, sea buckthorn oil) within 8 weeks prior to screening.
  3. History of any intestinal resection or other Crohn's disease-related surgery.
  4. History of or active chronic or recurrent infectious disease.
  5. History of or current malignancy.
  6. Pregnancy, lactation, or intention to become pregnant during the study period.
  7. Known hypersensitivity to infliximab or palmitoleic acid preparations.

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

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: Infliximab alone
Drug: Infliximab
Patients will receive infliximab alone administered intravenously at the standard dose of 5 mg/kg at Weeks 0, 2, and 6, followed by every 8 weeks thereafter.
Experimental: Palmitoleic Acid + Infliximab
Drug: Palmitoleic Acid + Infliximab

Patients will be administered oral palmitoleic acid at a dose of 720 mg once daily for 26 consecutive weeks, starting at Week 0.

Concurrent infliximab will be administered intravenously at the standard dose of 5 mg/kg at Weeks 0, 2, and 6, followed by every 8 weeks thereafter.

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
Complete mucosal healing
Time Frame: From enrollment to the end of treatment at 26 weeks
Complete mucosal healing is defined as the absence of ulceration, as determined by ileocolonoscopic examination.
From enrollment to the end of treatment at 26 weeks

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
Endoscopic remission
Time Frame: From enrollment to the end of treatment at 26 weeks
Endoscopic remission is defined as a simple endoscopic score for Crohn's Disease (SES-CD) score of <=4. The SES-CD evaluates 4 endoscopic variables-ulcer size, proportion of the surface area that is ulcerated, proportion of the surface area affected, and stenosis-in 5 segments evaluated during ileocolonoscopy (ileum, right colon, transverse colon, left colon, and rectum). The score for each endoscopic variable is the sum of values obtained for each segment. The SES-CD total is the sum of the 4 endoscopic variable scores from 0 to 56, where higher scores indicate more severe disease.
From enrollment to the end of treatment at 26 weeks
Endoscopic response
Time Frame: From enrollment to the end of treatment at 26 weeks
Endoscopic response is defined as a reduction in SES-CD from Baseline by >=50%.
From enrollment to the end of treatment at 26 weeks
Clinical remission
Time Frame: From enrollment to the end of treatment at 26 weeks
Clinical remission is defined as Crohn's Disease Activity Index (CDAI) of <=150 points. CDAI is a scoring system for the assessment of Crohn's Disease Activity, index values of 150 and below are associated with quiescent disease; values above that indicate active disease and values above 450 are seen with extremely severe disease.
From enrollment to the end of treatment at 26 weeks
Clinical response
Time Frame: From enrollment to the end of treatment at 26 weeks
Clinical response is defined as CDAI decrease from Baseline of >=100 points.
From enrollment to the end of treatment at 26 weeks

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.
Chinese Medical Association

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.
First Affiliated Hospital, Sun Yat-Sen University
Sixth Affiliated Hospital, Sun Yat-sen University
Shenzhen University General Hospital
Guangxi Hospital Division of The First Affiliated Hospital, Sun Yat-sen University

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 (Estimated)

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.
April 1, 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.
March 31, 2029

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.
March 31, 2029

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).
February 11, 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.
February 11, 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.
February 18, 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.
February 18, 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.
February 11, 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.
February 1, 2026

More Information

Terms related to this study

Keywords

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.
  • POA-IFX-CD-2026

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

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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