Dietary Fiber to Induce Gut Microbiota-mediated Response to Immunotherapy in Melanoma. (FIGURE-IM)
2026年7月24日 更新者:Radboud University Medical Center
Previous research has shown that a higher fiber intake may have a beneficial effect on the intestinal health and improve the effectiveness of immunotherapy, but this is not certain.
The objective of this double-blinded randomized clinical trial is to analyze, whether increased dietary fiber intake by patients with metastatic melanoma will increase the relative amount of Bifidobacterium, which in turn stimulates immune cell activity and improves the response to immunotherapy.
調査の概要
状態
募集
研究の種類
介入
入学 (推定)
70
段階
- フェーズ2
連絡先と場所
このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。
研究連絡先
- 名前:Kalijn Bol, dr.
- 電話番号:+31 243618800
- メール:Kalijn.Bol@radboudumc.nl
研究連絡先のバックアップ
- 名前:Isabel Ossekoppele, MS
- メール:isabel.ossekoppele@radboudumc.nl
研究場所
-
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Gelderland
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Nijmegen、Gelderland、オランダ、6525GA
- 募集
- Medical oncology
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コンタクト:
- Isabel Ossekoppele, MS
- メール:isabel.ossekoppele@radboudumc.nl
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コンタクト:
- Kalijn Bol, dr.
- メール:Kalijn.Bol@radboudumc.nl
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主任研究者:
- Kalijn Bol, dr.
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副調査官:
- Carla van Herpen, Prof.
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副調査官:
- Isabel Ossekoppele, MS.
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Provincie Groningen
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Groningen、Provincie Groningen、オランダ、9713GZ
- まだ募集していません
- Universitair Medisch Centrum Groningen
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コンタクト:
- Kalijn Bol, dr.
- メール:Kalijn.Bol@radboudumc.nl
-
主任研究者:
- Kalijn Bol, dr.
-
副調査官:
- Isabel Ossekoppele, MS.
-
コンタクト:
- Sjoukje Lubberts, dr.
- メール:s.lubberts@umcg.nl
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主任研究者:
- Sjoukje Lubberts, dr.
-
-
参加基準
研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。
適格基準
就学可能な年齢
- 大人
- 高齢者
健康ボランティアの受け入れ
いいえ
説明
Inclusion Criteria:
- Histologically confirmed cutaneous melanoma classified as irresectable stage III or stage IV disease
- Measurable disease according to RECIST 1.1 criteria
- Age ≥ 18 years
- Starting standard-of-care treatment with ICI in first line
- Written informed consent must be given
- Able to read and understand Dutch or English
- Able to comply with study procedures (e.g. willing to provide fecal samples)
Exclusion Criteria:
- Symptomatic brain metastases
- Received prior immunotherapy; previous (neo)adjuvant treatment is allowed if the last administration is at least 6 months ago
- Use of systemic immunosuppressive medications
- Use of laxatives up to 1 week prior to start of ICI
- Use of supplements that alter bowel function or gut microbiota such as fibers/prebiotics, probiotics, synbiotics, or postbiotics up to 1 month prior to start of ICI
- Use of antibiotics up to 1 months prior to start of ICI
- Use of proton pumps inhibitors (PPI's) up to 3 months prior to start of ICI
- Pregnant or lactating
- Current participation in another clinical trial requiring the use of study medication
- Has a known allergy to plants such as lettuce, sage, tarragon, chicory, artichoke, chamomile, daisy, or sunflower.
- Has a medical history of gastrointestinal resection (appendectomy is allowed)
- Has active inflammatory bowel disease
研究計画
このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:4倍
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
実験的:Fiber intervention arm
Dried chicory roots
|
The dried chicory roots are implemented using a dosage of 22.5 gram/day resulting in 18.5 gram additional fibers a day.
他の名前:
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プラセボコンパレーター:Placebo arm
iso-caloric placebo (rice-puffs)
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The control arm will receive 12.4 grams of placebo a day, isocaloric to the intervention.
他の名前:
|
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
An increase in the relative abundance of Bifidobacterium in fecal samples.
時間枠:From baseline (T0) to 3-4 weeks (T1) after start ICI
|
The primary endpoint of this study is defined as a ≥5% (e.g. from 3% to 8%) increase in the relative abundance of Bifidobacterium in fecal samples between baseline (T0) and follow-up (T1) and significant differences between the experimental arm and the control arm.
|
From baseline (T0) to 3-4 weeks (T1) after start ICI
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Fecal microbiota composition
時間枠:Measurement at baseline (T0), 3-4 weeks (T1), 3-4 months (T2), and 6-7 months (T3) after start ICI
|
Study the baseline and on-treatment gut microbiota composition of patients with melanoma treated with ICI +/- additional dietary fiber.
|
Measurement at baseline (T0), 3-4 weeks (T1), 3-4 months (T2), and 6-7 months (T3) after start ICI
|
|
Radiological response rate to ICI
時間枠:From baseline (T0) to the first date of documented progression or date of death from any cause, wichever came first, assesed up to 5 year.
|
Evaluate radiological response rates to ICI +/- additional dietary fiber, assessed by CT/PET scan per RECIST 1.1 defined as; the date of randomization to the date of disease progression or death, respectively.
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From baseline (T0) to the first date of documented progression or date of death from any cause, wichever came first, assesed up to 5 year.
|
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Progression free survival (PFS)
時間枠:From baseline (T0) to the first date of documented progression or date of death from any cause, wichever came first, assesed up to 5 year.
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Evaluate progression-free survival defined as; the date of randomization to the date of disease progression or death, respectively.
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From baseline (T0) to the first date of documented progression or date of death from any cause, wichever came first, assesed up to 5 year.
|
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Overall survival (OS)
時間枠:From baseline (T0) on, survival follow-up will be continued after study completion for a maximal of 5 years in accordance with standard-of-care follow-up.
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Evaluate overall survival to ICI +/- additional dietary fiber defined as; the date from randomization to date of death, respectively.
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From baseline (T0) on, survival follow-up will be continued after study completion for a maximal of 5 years in accordance with standard-of-care follow-up.
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Evaluate the gastro-intestinal side effects of additional dietary fiber intake
時間枠:From start intervention at baseline (T0) until the end of wash-out period at 6-7 months (T3) after start ICI.
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Evaluate the gastro-intestinal side effects of additional dietary fiber intake, according to CTCAE common criteria v 5.0.
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From start intervention at baseline (T0) until the end of wash-out period at 6-7 months (T3) after start ICI.
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その他の成果指標
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Habitual dietary intake (Food Frequency Questionnaire)
時間枠:At baseline (T0) and at 3-4 months (T2)
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Nutritional intake is measured using a semi-quantitative Food Frequency Questionnaire (FFQ).
Scores are calculated using the Dutch National Food Consumption tables.
The FFQ will be used to evaluate habitual diet and fiber intake.
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At baseline (T0) and at 3-4 months (T2)
|
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Physical activity level (Short QUestionnaire to ASsess Health-enhancing physical activity)
時間枠:At baseline (T0) and at 3-4 months (T2)
|
Physical activity is measured using the Short QUestionnaire to ASsess Health-enhancing physical activity (SQUASH).
The questions in the SQUASH are pre-structured in commuting, leisure time, household and work/school activities.
Scores will be assigned to the different reported activities base on intensities in MET and translated to minutes of physical activity.
|
At baseline (T0) and at 3-4 months (T2)
|
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Sleep quality and duration (Pittsburgh Sleep Quality Index)
時間枠:At baseline (T0) and at 3-4 months (T2)
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Sleep quality is measured with the Pittsburgh Sleep Quality Index (PSQI), a 19-item questionnaire with scores ranging from 0-21.
A score above 5 indicates bad sleep quality.
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At baseline (T0) and at 3-4 months (T2)
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Bristol Stool Scale (BSS)
時間枠:Measurement at baseline (T0), 3-4 weeks (T1), 3-4 months (T2), and 6-7 months (T3) after start ICI
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Stool consistency is measured using the Bristol Stool Scale (BSS)
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Measurement at baseline (T0), 3-4 weeks (T1), 3-4 months (T2), and 6-7 months (T3) after start ICI
|
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Circulating tumor DNA (ctDNA)
時間枠:Measurement at baseline (T0), 3-4 weeks (T1), 3-4 months (T2), and 6-7 months (T3) after start ICI
|
ctDNA levels will be analysed to evaluate circulating tumor DNA.
|
Measurement at baseline (T0), 3-4 weeks (T1), 3-4 months (T2), and 6-7 months (T3) after start ICI
|
|
Short-Chain Fatty Acids
時間枠:Measurement at baseline (T0), 3-4 weeks (T1), 3-4 months (T2), and 6-7 months (T3) after start ICI
|
Fecal and Plasma SCFA's levels will be evaluated.
|
Measurement at baseline (T0), 3-4 weeks (T1), 3-4 months (T2), and 6-7 months (T3) after start ICI
|
|
Sequencing mRNA in circulating immune cells
時間枠:Measurement at baseline (T0), 3-4 weeks (T1), 3-4 months (T2), and 6-7 months (T3) after start ICI
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(m)RNA will be sequenced to evaluate the transcription/gene expression in circulating immune cells.
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Measurement at baseline (T0), 3-4 weeks (T1), 3-4 months (T2), and 6-7 months (T3) after start ICI
|
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Tumor infiltration
時間枠:Pretreatment
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Archived tumor tissue, previous to baseline (T0): Pre-interventional tumor tissue will be requested for immune cell analyses using multiplex immunohistochemistry. |
Pretreatment
|
協力者と研究者
ここでは、この調査に関係する人々や組織を見つけることができます。
研究記録日
これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。
主要日程の研究
研究開始 (推定)
2026年7月31日
一次修了 (推定)
2028年5月1日
研究の完了 (推定)
2029年4月30日
試験登録日
最初に提出
2026年6月4日
QC基準を満たした最初の提出物
2026年6月29日
最初の投稿 (実際)
2026年7月7日
学習記録の更新
投稿された最後の更新 (実際)
2026年7月27日
QC基準を満たした最後の更新が送信されました
2026年7月24日
最終確認日
2026年7月1日
詳しくは
本研究に関する用語
キーワード
追加の関連 MeSH 用語
その他の研究ID番号
- R0007807A
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
未定
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
いいえ
米国FDA規制機器製品の研究
いいえ
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