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転移性がん患者におけるオピオイド誘発性便秘の予防 (OMAMA)

2026年9月30日 更新者：Lia van Zuylen、Amsterdam UMC, location VUmc

OMAMA研究 - 転移性癌患者におけるオピオイド誘発性便秘の予防

More than 70% of patients with cancer in the palliative phase have pain that often requires treatment with opioids (morphine-like agents). Constipation occurs in 59% of patients treated with opioids. Opioid-induced constipation (OIC) has consequences that range from daily discomfort with social insecurity and disability to intestinal obstruction. It leads to limitations in self-management, a reduced quality of life and a risk of the need for more care. In the guideline "Diagnosis and treatment of pain in patients with cancer" it is recommended to start preventively with an osmotic laxative such as macrogol/electrolytes or magnesium hydroxide when starting opioids. Macrogol/electrolytes has been proven to be effective for OIC, but is sometimes perceived by patients as unpleasant due to its taste. Magnesium hydroxide, which is less commonly prescribed for OIC, has a neutral taste. Although it is mentioned in the guideline, it is not studied for the treatment of OIC and also not officially registered for this. To support the advice of the guideline and to prove that a choice is possible, it is important to investigate whether there are differences in effectiveness and/or side effects between macrogol/electrolytes and magnesium hydroxide in the prevention of OIC.

The aim of this study is to compare macrogol/electrolytes with magnesium hydroxide in the prevention of opioid-induced constipation in patients with cancer in the palliative (incurable) phase, who start opioids because of pain. The choice of laxative is determined by drawing lots (randomisation). After two weeks, its effect will be assessed and will be presented as the percentage of patients who have not developed constipation after starting opioids. If the laxative, as assigned by lot, is described as satisfactory by the patient, the patient can continue with the drug that the patient used, after the study through regular prescription.

The investigators will ask the patients in the study about their satisfaction with the laxative used, any side effects and the degree of pain. Furthermore, the appeal to care for possible constipation will be examined. Because the best attainable quality of life in the palliative phase is the objective of all care, the investigators will also measure this perceived quality with a questionnaire in this study. The results of this study will lead to the best achievable prevention of opioid constipation in patients with cancer in the palliative phase.

調査の概要

状態

募集

条件

介入・治療

研究の種類

介入

入学 (推定)

258

段階

  • フェーズ 4

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

研究連絡先のバックアップ

研究場所

  • オランダ
    • Flevoland
      • Almere Stad、Flevoland、オランダ、1315 RA
    • Gelderland
      • Arnhem、Gelderland、オランダ、6815 AD
      • Nijmegen、Gelderland、オランダ、6525 GA
        • 募集
        • Radboud university Medical center Nijmegen
        • コンタクト：
        • コンタクト：
    • North Brabant
      • 's-Hertogenbosch、North Brabant、オランダ、5223 GZ
        • 募集
        • Jeroen Bosch Ziekenhuis
        • コンタクト：
    • North Holland
      • Amsterdam、North Holland、オランダ、1081 HV
        • 募集
        • Amsterdam UMC, location VUmc
        • コンタクト：
      • Hoofddorp、North Holland、オランダ、2134 TM
    • Provincie Groningen
      • Groningen、Provincie Groningen、オランダ、9713 GZ
        • 募集
        • University Medical Center Groningen
        • コンタクト：
      • Groningen、Provincie Groningen、オランダ、9728 NT
        • 募集
        • Martini Hospital Groningen
        • コンタクト：
    • South Holland
      • Gouda、South Holland、オランダ、2803 HH
        • 募集
        • Groene Hart Hospital
        • コンタクト：
      • Leiden、South Holland、オランダ、2333 ZA
        • 募集
        • Leiden University Medical Center
        • コンタクト：
      • Rotterdam、South Holland、オランダ、3015 GD
      • The Hague、South Holland、オランダ、2512 VA
    • Utrecht
      • Utrecht、Utrecht、オランダ、3584 CX
        • 募集
        • University Medical Center Utrecht
        • コンタクト：
        • コンタクト：

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

18年歳以上 (大人、高齢者)

健康ボランティアの受け入れ

いいえ

受講資格のある性別

全て

説明

Inclusion criteria:

In order to be eligible to participate in this study, a subject must meet all of the following criteria:

  • Patients with advanced cancer (≥18 years);
  • Starting with slow release or transdermal opioids for pain;
  • Able to complete a Dutch questionnaire. Previous treatment with opioids is allowed, if discontinued more than 4 weeks ago.

Exclusion Criteria:

A potential subject who meets any of the following criteria will be excluded from participation in this study:

  • Patients with contra-indications for laxatives
  • Maintenance treatment with laxatives during the last 14 days
  • Severely impaired renal function (serum creatinine >180 umol/l)
  • Estimated life expectancy <1 month

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：防止
  • 割り当て：ランダム化
  • 介入モデル：並列代入
  • マスキング：なし（オープンラベル）

武器と介入

参加者グループ / アーム
介入・治療
アクティブコンパレータ：Macrogol/electrolytes

Macrogol/electrolytes is started at a dose of 1 sachet once a day orally, based on the current guideline 'Diagnosis and treatment of pain in patients with cancer' (www.pallialine.nl). The dose of macrogol/electrolytes may be increased to 2 sachets a day during the study period.

The effect of laxatives will be judged after 14 days.
薬：Macrogol Only Product in Oral Dose Form

Information already included in arm/group description.

他の名前：
  • マクロゴール/電解質
アクティブコンパレータ：Magnesium hydroxide

Magnesium hydroxide is started at a dose of 724 mg three times a day orally, based on the current guideline 'Diagnosis and treatment of pain in patients with cancer' (www.pallialine.nl). The dose of magnesium hydroxide may be increased to 1448 mg three times a day during the study period. The effect of laxatives will be judged after 14 days.
薬：Magnesium hydroxide 724mg

Information already included in arm/group description.

他の名前：
  • 酸化マグネシウム

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
The percentage of patients with a score of <30 of the Bowel Function Index
時間枠：On day 14

A clinician-administered patient-reported questionnaire to assess clinically significant constipation, validated in patients receiving opioids for chronic non-malignant pain and for malignant pain (Abramovitz 2013, Rentz 2009 and 2011). It consists of three questions, assessing ease of defecation, feeling of incomplete bowel evacuation and personal judgement of the patient regarding constipation, each during the last 7 days and each rated on a scale of 0 (best possible outcome) to 100 (worst possible outcome). A total score ≥30 (mean of the three separate scores) indicates clinically significant constipation. A change of the total score of >12 is regarded as clinically meaningful. It has been used in a large observational study in cancer patients receiving opioids (Davies 2021) and in randomised trials of opioid antagonists for OIC (Ahmedzai 2012, Dupoiron 2017, Leng 2020, Poelaert 2015). It has been recommended as the assessment tool of choice for OIC (Argoff 2015, Farmer 2019).
On day 14

二次結果の測定

結果測定
メジャーの説明
時間枠
The EQ5D
時間枠：On day 0 and day 14

A self-administered, generic assessment tool developed by the EuroQol Group, a network of international research teams, and consists of questions on five dimensions of health (i.e., mobility, self-care, pain/discomfort, usual activities, and anxiety/depression) (Pickard 2007). It has been used in cost-effectiveness studies on OIC (Dunlop 2012, Hjalte 2016, Lawson 2016).
On day 0 and day 14
Rome IV criteria for opioid-induced constipation
時間枠：On day 0 and day 14

Rome IV criteria for opioid-induced constipation as judged by professional care givers (Davies 2021, Drossman 2016), including:

  • straining during >25% of defecations
  • lumpy or hard stools in >25% of defecations
  • sensation of incomplete evacuation in >25% of defecations
  • sensation of anorectal obstruction/blockage in >25% of defecations
  • manual manoeuvres to facilitate >25% of defecations
  • <3 spontaneous defecations per week At least two of these criteria have to be fulfilled in order to diagnose constipation, to be judged by the treating physician or clinical nurse specialists/nurse practitioners
On day 0 and day 14
Cancer pain score
時間枠：On day 0 and day 14

Numeric Rating SDcale, ranging from 0 to 10
On day 0 and day 14
Patient satisfaction with laxative
時間枠：On day 14

A single four-item question, ranging from unsatisfied to very satisfied.
On day 14
Side effects of laxatives
時間枠：On day 14

All side-effects are scored on a four-point Likert scale (not at all, a bit, rather, very much):

  • Bad taste
  • Problems with swallowing
  • Abdominal cramps
  • Nausea
  • Flatulence
  • Diarrhea
  • Other (to be specified by the patient)
On day 14
Cost-effectiveness of macrogol/electrolytes compared to magnesium hydroxide
時間枠：On day 14

We aim to perform a comparative cost-effectiveness of the laxatives. This requires data collection on healthcare procedures and QOL in responders, non-responders and patients with side-effects of laxatives for the follow-up period of the study. These healthcare procedures will be extracted from hospital databases and healthcare use outside the hospital will be collected with the iMCQ at 4 weeks. All individual health care procedures will be linked to their unit costs. Reimbursement prices issued by the Dutch Healthcare Authority and national reference prices will be used for this assessment as outlined in current Dutch pharmaco-economic guidance. The cost-effectiveness analysis will be performed using a decision tree including different branches for initial therapy and responders and non-responders. The costs and QOL of the patients in the trial will be used as input for this decision tree. Total costs and effects will be calculated by summing the costs and effects of each branch.
On day 14

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。

スポンサー

Amsterdam UMC, location VUmc

協力者

Radboud University Medical Center
University Medical Center Groningen
UMC Utrecht
Erasmus Medical Center
Leiden University Medical Center
Rijnstate Hospital
Groene Hart Ziekenhuis
Flevoziekenhuis
Spaarne Gasthuis
Jeroen Bosch Ziekenhuis
Isala
Martini Hospital Groningen
Bernhoven Hospital
Haaglanden Medical Centre
Antoni van Leeuwenhoek Hospital

捜査官

  • 主任研究者：Lia van Zuylen, Prof.dr.、Amsterdam UMC, location VUmc

出版物と役立つリンク

研究に関する情報を入力する責任者は、自発的にこれらの出版物を提供します。これらは、研究に関連するあらゆるものに関するものである可能性があります。

一般刊行物

便利なリンク

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 (実際)

2022年12月2日

一次修了 (推定)

2027年1月1日

研究の完了 (推定)

2027年6月1日

試験登録日

最初に提出

2022年1月19日

QC基準を満たした最初の提出物

2022年1月19日

最初の投稿 (実際)

2022年1月31日

学習記録の更新

投稿された最後の更新 (実際)

2026年10月5日

QC基準を満たした最後の更新が送信されました

2026年9月30日

最終確認日

2026年9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

  • 08440012010002

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?

はい

IPD プランの説明

Due to the sensitivity of the data, the underlying data sets will not be shared publicly but will be made available for verification/ inspection purposes. Additional sharing conditions will be considered (e.g. via the Personal Health Train initiative from Health-RI, which is currently under development) while respecting the type of informed consent provided by the subjects and discussed with the support of Legal/Privacy/RDM experts where appropriate. For descriptive documentation (protocol, data dictionary, syntax/script, etc.) the study team will collaborate with RDM, to ensure such data can be found and made available to other researchers. Providing information in an online (metadata) catalogue that is certified holds preference.

We are considering using a DANS repository or similar. DANS EASY is commonly used, uses the Dublin Core Metadata standard, provides a PID and holds a Core Trust Seal. However, DANS is initiatiating Data Stations, with a specific one for the Life Sciences and

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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

米国で製造され、米国から輸出された製品。

いいえ

この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。

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