A Phase-1 Trial to Investigate the Use of Pulsed Low-dose Rate Radiotherapy in Diffuse Midline Gliomas. (BABY-PULSAR)
Over the past decades, advances in radiation therapy technology have significantly reduced treatment-related toxicity. In patients with diffuse midline glioma (DMG), these improvements have enhanced the tolerability of radiotherapy but have not improved disease control. Pulsed low-dose-rate radiotherapy (pLDRT) may offer additional advantages by further reducing treatment-related toxicity, preserving tumor vascularization to facilitate the delivery and efficacy of subsequent chemotherapy, and exploiting the low-dose hyper-radiosensitivity phenomenon. To the best of our knowledge, no clinical studies have evaluated pLDRT in patients with DMG. Therefore, the primary objective of this phase I study is to evaluate the tolerability of pLDRT in this predominantly pediatric population and to determine a safe dose level for future clinical investigation.
調査の概要
状態
状態
条件
条件
介入・治療
介入・治療
詳細な説明
Over the past decades, advances in radiation therapy technology have significantly reduced treatment-related toxicity. In patients with diffuse midline glioma (DMG), these improvements have enhanced the tolerability of radiotherapy but have not improved disease control. Pulsed low-dose-rate radiotherapy (pLDRT) may offer additional advantages by further reducing treatment-related toxicity, preserving tumor vascularization to facilitate the delivery and efficacy of subsequent chemotherapy, and exploiting the low-dose hyper-radiosensitivity phenomenon. To the best of our knowledge, no clinical studies have evaluated pLDRT in patients with DMG. Therefore, the primary objective of this phase I study is to evaluate the tolerability of pLDRT in this predominantly pediatric population and to determine a safe dose level for future clinical investigation.
研究の種類
研究の種類
入学 (推定)
入学
段階
段階
- 適用できない
連絡先と場所
研究連絡先
研究連絡先
- 名前:Elisa Coassin, MD
- 電話番号:+39 0434 659632
- メール:ecoassin@cro.it
研究場所
-
-
Pordenone
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Aviano、Pordenone、イタリア、33081
- 募集
- Centro di Riferimento Oncolgico -IRCCS
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コンタクト:
- Elisa Coassin
- 電話番号:0434659632
- メール:ecoassin@cro.it
-
主任研究者:
- Elisa Coassin
-
-
参加基準
適格基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Radiological and/or histological diagnosis of diffuse midline glioma (DMG).
- Ability to maintain the treatment position or undergo sedation, if required.
- Written informed consent provided by the parent(s) or legal guardian(s), or by the patient if aged ≥18 years.
Exclusion Criteria:
- Refusal to undergo radiotherapy (i.e., lack of signed informed consent).
- Concurrent chemotherapy.
- Leptomeningeal dissemination of disease.
- Ongoing pregnancy (for post-pubertal female patients).
- Previous radiotherapy to the brainstem.
研究計画
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:なし
- 介入モデル:単一グループの割り当て
- マスキング:なし(オープンラベル)
アーム数
武器と介入
参加者グループ / アーム参加者グループ / アーム |
介入・治療介入・治療 |
|---|---|
|
実験的:Determination of the safe dose level of pulsed low-dose-rate radiotherapy (pLDRT)
|
The radiotherapy treatment will preferably be delivered using volumetric modulated arc therapy (VMAT) with high-energy photons (6 MV), including 6 MV flattening filter-free (FFF) beams when appropriate. In selected cases, intensity-modulated radiotherapy (IMRT) may be used. |
この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Determination of the safe dose level of pulsed low-dose-rate radiotherapy (pLDRT)
時間枠:Up to 5 years
|
Incidence of grade ≥3 toxicities, as defined according to the CTCAE v5.0 scale |
Up to 5 years
|
二次結果の測定
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
To evaluate the median time to local disease progression.
時間枠:Up to 5 years
|
Median progression-free survival (PFS) defined as the time from treatment initiation to the first documented disease progression or death from any cause. Disease progression will be defined according to the RAPNO criteria for pediatric patients and the RANO criteria for adult patients. |
Up to 5 years
|
|
To evaluate median overall survival.
時間枠:Up to 5 years
|
Median overall survival (OS), defined as the time from treatment initiation to death from any cause. |
Up to 5 years
|
|
To assess the incidence of treatment-related toxicities other than dose-limiting toxicities.
時間枠:Up to 5 years
|
Frequency of neurological toxicities |
Up to 5 years
|
|
To assess changes in neurological symptoms compared with baseline.
時間枠:Up to 5 years
|
Change in frequencies of neurological symptoms |
Up to 5 years
|
|
To evaluate corticosteroid use during radiotherapy.
時間枠:Up to 5 years
|
Dexamethasone dose (mg/day) mean |
Up to 5 years
|
|
To evaluate circulating prognostic and predictive biomarkers of response to pLDRT.
時間枠:Up to 5 years
|
Relation between PFS (defined as the time from treatment initiation to the first documented disease progression or death from any cause) and levels of circulating biomarkers will be evaluated with Kaplan-Meyer method |
Up to 5 years
|
|
To evaluate circulating prognostic and predictive biomarkers of response to pLDRT.
時間枠:Up to 5 years
|
Relation between OS (defined as the time from treatment initiation to death from any cause) and levels of circulating biomarkers will be evaluated with Kaplan-Meyer method |
Up to 5 years
|
|
To evaluate tissue biomarkers of response to pLDRT.
時間枠:Up to 5 years
|
Relation between PFS (defined as the time from treatment initiation to the first documented disease progression or death from any cause) and levels of tissue biomarkers will be evaluated with Kaplan-Meyer method |
Up to 5 years
|
|
To evaluate tissue biomarkers of response to pLDRT.
時間枠:Up to 5 years
|
Relation between OS (defined as the time from treatment initiation to death from any cause) and levels of tissue biomarkers will be evaluated with Kaplan-Meyer method |
Up to 5 years
|
|
To characterize the inflammatory and immune profile induced by the pLDRT treatment schedule.
時間枠:Up to 5 years
|
Mean of median levels of biomarkers of inflammatory and immune profile |
Up to 5 years
|
協力者と研究者
研究記録日
主要日程の研究
研究開始 (実際)
研究開始
一次修了 (推定)
一次修了
研究の完了 (推定)
研究の完了
試験登録日
最初に提出
最初に提出
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
最初の投稿 (実際)
最初の投稿
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
QC基準を満たした最後の更新が送信されました
QC基準を満たした最後の更新が送信されました
最終確認日
最終確認日
詳しくは
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