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Influence of a High-fiber Diet on the Microbiota and the Response to Immunotherapy in Patients Treated for Melanoma.

Influence of a High-fiber Diet on the Microbiota and the Response to Immunotherapy in Patients Treated for Melanoma.

Status
Not yet recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07437300
Acronym
FIBIOME
Enrollment
60
Registered
2026-02-27
Start date
2026-02-25
Completion date
2027-02-01
Last updated
2026-02-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Melanoma

Keywords

immunotherapy, high-fiber diet

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

Interventions

None listed

Sponsors

University Hospital, Grenoble
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* 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 * Start of immunotherapy less than or equal to 1 year at the time of inclusion * Subject affiliated with social security system

Exclusion criteria

* 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.) * Inclusion in an interventional clinical study * 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)

Design outcomes

Primary

MeasureTime frameDescription
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 settingfollow-up imaging at 3 and 6 months in curative and adjuvant settingsObjective response rate to immunotherapy according to RECIST 1.1 criteria

Secondary

MeasureTime frameDescription
association between a high-fiber diet and the occurrence of immunotoxicityduring 6 months of immunotherapy initiationOccurrence of immunotoxicity with its CTCAE v5.0
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 immunotherapyfollow-up imaging at 3 and 6 months in curative and adjuvant settingsMuscle surface index on L3 CT scan using ODIASP software and objective response rate to immunotherapy
association between the presence of malnutrition at the start of treatment and response to immunotherapyfollow-up imaging at 3 and 6 months in curative and adjuvant settingsPresence of malnutrition at the start of treatment and objective response rate to immunotherapy
association between high physical activity (GPAQ (Global Physical Activity Questionnaire) score) and response to immunotherapyfollow-up imaging at 3 and 6 months in curative and adjuvant settingsHigh physical activity (GPAQ score) and objective response rate to immunotherapy
association between uncontrolled diabetes (HbA1c > 7%) and response to immunotherapyfollow-up imaging at 3 and 6 months in curative and adjuvant settingsUncontrolled diabetes (HbA1c \> 7%) and objective response rate to immunotherapy
association between antibiotic use in the 3 months prior to the start of treatment and response to immunotherapyfollow-up imaging at 3 and 6 months in curative and adjuvant settingsAntibiotic use within 3 months prior to the start of treatment and objective response rate to immunotherapy
association between prebiotic or probiotic use and response to immunotherapyfollow-up imaging at 3 and 6 months in curative and adjuvant settingsPre- or probiotic intake and objective response rate to immunotherapy
ssociation between alcohol consumption and response to immunotherapyfollow-up imaging at 3 and 6 months in curative and adjuvant settingsAlcohol consumption and objective response rate to immunotherapy
association between tobacco consumption and response to immunotherapyfollow-up imaging at 3 and 6 months in curative and adjuvant settingsTobacco consumption and objective response rate to immunotherapy
Association between the presence of a pet in the patient's home and response to immunotherapyfollow-up imaging at 3 and 6 months in curative and adjuvant settingsPresence of a pet in the patient's home and objective response rate to immunotherapy

Contacts

CONTACTJulie Charles, MD, PhD
jcharles@chu-grenoble.fr0476769320
CONTACTStéphane Mouret, PhD
smouret1@chu-grenoble.fr0476767081
PRINCIPAL_INVESTIGATORJulie Charles, MD, PhD

University Grenoble Alpes Hospital

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 28, 2026