AzTrials
AzTrials

Melanoma (Skin Cancer)MelafitNCT07680452

Clinical Study on High-fiber Diet and Short-term Fasting in Melanoma Under Immunotherapy With Checkpoint Inhibition

A study testing High-Fiber Diet and High-Fiber Diet and Short-Term Fasting in people with Melanoma (Skin Cancer), run by Charite University, Berlin, Germany at 1 site in Germany.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

The treatment of melanoma has improved significantly in recent years. A modern form of cancer treatment known as immunotherapy with checkpoint inhibitors plays a key role in this. These drugs help the immune system better recognize and fight cancer cells. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Melanoma (Skin Cancer)
What is being tested?
High-Fiber Diet and High-Fiber Diet and Short-Term Fasting
Could I receive a placebo?
No, everyone receives an active treatment
How many people
60 participants
Where
1 siteGermany
Study dates
28 Jul 2026to 5 Dec 2028
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Histologically or cytologically confirmed stage IIB-IIIC melanoma
  • Indication for immune checkpoint inhibition as monotherapy as determined by the tumor board
  • No prior systemic melanoma therapy
  • ECOG 0 or 1
  • ≥ 18 years of age

Who cannot join

  • Pregnancy or breastfeeding
  • Underweight (BMI ≤19.5)
  • Pre-existing eating disorder
  • Severe internal medical conditions (e.g., renal insufficiency with creatinine > 2 mg/dL) or secondary malignancy
  • Current vegan diet or prolonged fasting (≤ 4 days) within the last 6 months
  • Use of antibiotics within 4 weeks prior to the start of the study intervention

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Anika Rajput, MD/PhD contact

004930450618599

melafit@charite.de

Thomas Eigentler, Prof. Dr. contact

Germany1 site, 1 recruiting
  • Charité - Universitätsmedizin Berlin

    Berlin, State of Berlin, 10117

    Recruiting

Other trials in Germany

About this study

Official title: Exploratory Clinical Study on High-fiber Diet and Short-term Fasting in Melanoma Under Immunotherapy With Checkpoint Inhibition

The treatment of melanoma has improved significantly in recent years. A modern form of cancer treatment known as immunotherapy with checkpoint inhibitors plays a key role in this. These drugs help the immune system better recognize and fight cancer cells. Nevertheless, it remains a challenge to maximize treatment effectiveness while minimizing side effects.

One possible approach to influencing treatment efficacy and tolerability is diet. A high-fiber diet, as recommended by the German Nutrition Society, increases the effectiveness of immunotherapy, in part through its influence on gut bacteria (the gut microbiota). Initial studies also show that short-term fasting (i.e., eating nothing or very little for a limited period) reduces the side effects of immunotherapy in mouse models and improves the tolerability of chemotherapy in humans.

Read more

This study investigates the feasability of a study on short-term fasting, in addition to a high-fiber diet in patiens with melanoma undergoing immunotherapy.

40 participants will follow a high-fiber diet based on the recommendations of the German Nutrition Society. Additionally, half of the participants will undergo periodic cycles of short-term fasting of 72h with each immunotherapy. Another 20 participants will not undergo any intervention and serve as a control group.

The goal is to determine whether this study concept is feasible. Exploratory outcomes include, quality of life, fatigue, tolerability of the therapy, impact on disease progression, immune system (flow cytometry) and gut bacteria (microbiome).

The results are intended to help understand whether targeted dietary measures can support the effectiveness of modern cancer treatments.

Being tested
High-Fiber Diet, High-Fiber Diet and Short-Term Fasting
Keywords
fasting, diet, fiber, high-fiber, melanoma, STF, short-term fasting, microbiome, checkpoint-inhibitor, checkpoint-inhibition, immunotherapy
Medical subject headings
Melanoma, Fasting, Intermittent Fasting

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • High-Fiber DietBehavioural

    High-Fiber Diet (>35g/day) according to the German Nutrition Society (Deutsche Gesellschaft für Ernährung, DGE) for 6 months.

  • High-Fiber Diet and Short-Term FastingBehavioural

    High-Fiber Diet (>35g/day) according to the German Nutrition Society (Deutsche Gesellschaft für Ernährung, DGE) and 72 hours of short-term fasting (max 400kcal/day) with every immunetherapy cycle for 6 months.

Study groups in NCT07680452
Study groupRoleWhat they receive
High-Fiber DietActive comparatorNot described
Receives: Behavioral: High-Fiber Diet
High-Fiber Diet and Short-Term FastingExperimentalNot described
Receives: Behavioral: High-Fiber Diet and Short-Term Fasting
ObservationalNo interventionNot described

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Study feasability, measured by adequacy and efficiency of recruitment strategies

    Number of participants recruited per month (at least 2 per month)

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  2. Study feasability, measured by adherence to the intervention and dropout rate

    Adherence to the Intervention for intervention groups (at least 70% of the fasting cycles)

    Measured: After 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  3. Study feasability, measured by acceptability of study outcome measures

    Patient acceptability of study assessments (number of completed study visits)

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  4. Feasibility of the study procedures

    Feasibility of study procedures, e.g. in terms of patient and provider acceptance of randomisation and outcome measures (percentage of eligible participants who explicitly refuse to participate because of the randomization process, missing item-level data, completion rates of questionnaires)

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  5. Feasibility of the intervention procedures

    Feasibility of the intervention methods (including patient acceptance of video and telephone consultations measured by no-show rate, patient safety in terms of number of adverse events)

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

Secondary outcomes (20)
  1. Adverse events

    Frequency and severity of treatment-emergent adverse events during the study

    Measured: After 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  2. Hospitalizations rate

    Number of hospital admissions occurring during the study period

    Measured: After 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  3. Dose Interruption or reduction

    Frequency of dose interruption or reduction

    Measured: After 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  4. Cumulative dose

    Total cumulative dose of study treatment administered during the study period

    Measured: After 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  5. Treatment discontinuation

    Frequency of treatment discontinuation and the reasons for it

    Measured: After 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  6. Subjective Severity of the main symptom

    Patient-reported severity of the main symptom assessed using a Visual Analog Scale (VAS) ranging from 0 (no symptoms) to 100 (worst imaginable symptom severity)

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  7. Distress Thermometer

    Psychological distress assessed using the Distress Thermometer, a self-report scale ranging from 0 (no distress) to 10 (extreme distress). The DT is accompanied by a Problem list that identifies practical, family, emotional, spiritual/religious, and physical concerns

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  8. Health status (EQ-5D-5L)

    Health status assessed using the EQ-5D-5L questionnaire. It evaluates five dimensions (mobilty, self-care, usual activities, pain/discomfort, and anxiety/depression, each rated at five levels (no problems, slight problems, moderate problems, severe problems and extreme problems).

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  9. Short Form 36

    Change in health-related quality of life assessed using the Short Form-36 (SF-36). The instrument evaluates eight domains of physical and mental health, with higher scores indicating better quality of life (scale 0-100).

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  10. Quality of life of cancer patients (EORTC QLQ-C30)

    Quality of life of cancer patients assessed using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQ-C30). The instrument comprises 30 items evaluating global health status/quality of life, functional domains (physical, role, emotional, cognitive, and social functioning), and symptom domains. Higher scores on functional and global health status scales indicate better functioning and quality of life, whereas higher symptom scores indicate greater symptom burden.

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  11. Nutrition

    Dietary intake assessed using a 3-day food diary and using a validated Food Frequency Questionnaire (FFQ). The questionnaire evaluates the usual frequency of consumption of a range of food and beverage items over the specified recall period. Data are used to characterize dietary patterns and estimate intake of major food groups and nutrients.

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  12. Differential blood count

    Analysis of differential blood count to determine the distribution of leukocyte subtypes, including neutrophils, lymphocytes, monocytes, eosinophils, and basophils." Unit of Measure: cells/µL

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  13. C-reactive protein (CRP)

    CRP (C-reactive protein) as a marker of inflammatory conditions is used to assess acute inflammation and monitor the effects of prolonged fasting and plant-based nutrition. Higher scores indicate more inflammation.

    Serum CRP, unit of Measure: CRP in milligram per liter (mg/L)

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  14. Alanine aminotransferase (ALT/ALAT)

    Alanine aminotransferase (ALT/ALAT), Unit of Measure: U/L

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  15. Aspartate aminotransferase (AST/ASAT)

    Aspartate aminotransferase (AST/ASAT), unit of Measure: U/L

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  16. Electrolytes

    calcium in millimol per liter (mmol/L), potassium (mmol/L), sodium (mmol/L)

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  17. Creatinine

    Creatinine in µmol per liter (µmol/L), Biomarker of renal function and muscle metabolism

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  18. Glucose

    Glucose, unit of Measure: mg/dL oder mmol/L

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  19. Lactate dehydrogenase (LDH)

    Lactate dehydrogenase (LDH), unit of Measure: U/L

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

  20. S100 protein

    S100 protein, unit of Measure: µg/L or ng/mL

    Measured: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Jul 2026
  2. Study start28 Jul 2026
  3. Primary completion5 Jul 2028 (estimated)
  4. Study completion5 Dec 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Other
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
60 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07680452
Sponsor's protocol ID
MelaFit
Acronym
Melafit
Status last verified
Jul 2026
First submitted
3 Jun 2026
Last updated
29 Jul 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: IPD will be shared upon request.

Questions about this trial

What is this clinical trial studying?

A study testing High-Fiber Diet and High-Fiber Diet and Short-Term Fasting in people with Melanoma (Skin Cancer), run by Charite University, Berlin, Germany at 1 site in Germany.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 29 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Germany. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Anika Rajput, MD/PhD (004930450618599, melafit@charite.de), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Study feasability, measured by adequacy and efficiency of recruitment strategies (time frame: Baseline, after 6 weeks, after 3 months, after 6 months, optional follow-ups at 12 and 18 months). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Jul 2026.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in