Influence of a High-fiber Diet on the Microbiota and the Response to Immunotherapy in Patients Treated for Melanoma.
FIBIOME
2 other identifiers
observational
60
0 countries
N/A
Brief Summary
The underlying hypothesis of the study is that melanoma patients treated with immunotherapy, whether in an adjuvant or curative setting, who consume more fiber would respond better to immunotherapy: either no recurrence in the case of adjuvant treatments, or no progression (disease stability, partial or complete response) in the case of curative treatments. The primary objective is to evaluate the association between total dietary fiber intake quantified using the FiberTAG questionnaire and response to immunotherapy treatment in patients treated for melanoma in a curative or adjuvant setting
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for all trials
Started Feb 2026
Shorter than P25 for all trials
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
February 20, 2026
CompletedStudy Start
First participant enrolled
February 25, 2026
CompletedFirst Posted
Study publicly available on registry
February 27, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 15, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
February 1, 2027
February 27, 2026
February 1, 2026
3 months
February 20, 2026
February 20, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Association between total dietary fiber intake based on the FiberTAG questionnaire and response to immunotherapy treatment in patients treated for melanoma in a curative or adjuvant setting
Objective response rate to immunotherapy according to RECIST 1.1 criteria
follow-up imaging at 3 and 6 months in curative and adjuvant settings
Secondary Outcomes (10)
association between a high-fiber diet and the occurrence of immunotoxicity
during 6 months of immunotherapy initiation
association between muscle surface index on L3 CT scan using ODIASP software (Automated Computerized Muscle Surface Determination Tool at the Psoas Level) and response to immunotherapy
follow-up imaging at 3 and 6 months in curative and adjuvant settings
association between the presence of malnutrition at the start of treatment and response to immunotherapy
follow-up imaging at 3 and 6 months in curative and adjuvant settings
association between high physical activity (GPAQ (Global Physical Activity Questionnaire) score) and response to immunotherapy
follow-up imaging at 3 and 6 months in curative and adjuvant settings
association between uncontrolled diabetes (HbA1c > 7%) and response to immunotherapy
follow-up imaging at 3 and 6 months in curative and adjuvant settings
- +5 more secondary outcomes
Eligibility Criteria
Patients treated by immunotherapy for melanoma in curative or adjuvant settings for less than one year in the dermatology day hospital at Grenoble Alpes University Hospital
You may qualify if:
- Melanoma treated with curative immunotherapy (IPILIMUMAB + NIVOLUMAB or NIVOLUMAB or PEMBROLIZUMAB or NIVOLUMAB + RELATLIMAB) or adjuvant immunotherapy (NIVOLUMAB or PEMBROLIZUMAB)
- Patients monitored and treated at the dermatology day hospital at Grenoble Alpes University Hospital
- Obtaining the patient's consent
- Subject affiliated with social security system
You may not qualify if:
- Recurrence of the disease within 6 months or less after a first line of adjuvant treatment with immunotherapy for 1 year
- Immunotherapy as a third line of treatment in metastatic situations
- Squamous cell carcinoma or basal cell carcinoma treated with immunotherapy
- Inability to complete the FiberTAG and GPAQ questionnaires (advanced neurocognitive disorders, memory loss, etc.)
- Immunotherapy in a neoadjuvant situation
- Persons referred to in Articles L1121-5 to L1121-8 of the CSP (corresponds to all protected persons: pregnant women, women in labor, breastfeeding mothers, persons receiving psychiatric care under Articles L. 3212-1 and L. 3213-1 who are not covered by the provisions of Article L. 1121-8, persons admitted to a health or social care institution for purposes other than research, minors, persons subject to legal protection measures or unable to give their consent). persons subject to legal protection measures)
Contact the study team to confirm eligibility.
Sponsors & Collaborators
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Julie Charles, MD, PhD
University Grenoble Alpes Hospital
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- RETROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
February 20, 2026
First Posted
February 27, 2026
Study Start
February 25, 2026
Primary Completion (Estimated)
May 15, 2026
Study Completion (Estimated)
February 1, 2027
Last Updated
February 27, 2026
Record last verified: 2026-02