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SHIELD: Surveillance of HR+/HER2- : Implementing ESR1m Long-term Monitoring and Detection in 1L aBC (SHIELD)

2026年7月8日 更新者:AstraZeneca

A Multicenter Study to Describe the Frequency and Emergence of ESR1 Mutations in Patients With Hormone Receptor-Positive Human Epidermal Growth Factor Receptor 2-Negative Advanced Breast Cancer Receiving First-Line Endocrine Based Therapy

This is a multicountry, multicenter, observational study in patients with hormone receptor-positive, human epidermal growth factor receptor 2-negative advanced breast cancer receiving first-line endocrine-based therapy with an aromatase inhibitor in combination with a CDK4/6 inhibitor. The study aims to describe the prevalence of ESR1 mutations at baseline and the emergence of ESR1 mutations over time using circulating tumor DNA testing in routine clinical practice.

Patients receiving first-line treatment for at least 6 months and no more than 18 months, without evidence of disease progression at study entry, may undergo baseline ESR1 mutation testing. Patients with a negative baseline result may undergo longitudinal monitoring approximately every 3 months, for up to 18 months or 6 testing timepoints, to assess emergence of ESR1 mutations. The study will also describe mutation subtypes, testing methods used in routine practice, selected clinical characteristics, and treatment patterns across participating countries.

調査の概要

状態

まだ募集していません

条件

介入・治療

詳細な説明

This is a multicountry, multicenter, observational study designed to determine the prevalence of ESR1 mutations at baseline and to assess the emergence of ESR1 mutations during longitudinal surveillance in patients with hormone receptor-positive, human epidermal growth factor receptor 2-negative advanced breast cancer (HR+/HER2- aBC) receiving first-line treatment with an aromatase inhibitor (AI) in combination with a cyclin-dependent kinase 4/6 (CDK4/6) inhibitor.

Eligible patients are adults with histologically or cytologically confirmed HR+/HER2- advanced breast cancer who have been receiving first-line AI plus CDK4/6 inhibitor therapy for at least 6 months and no more than 18 months, without evidence of disease progression according to investigator assessment, and who are willing and able to provide blood samples for circulating tumor DNA (ctDNA) testing at predefined intervals.

Following informed consent, baseline data will be collected in electronic case report forms and will include sociodemographic characteristics, clinical and tumor history, testing methods, and treatment patterns. A baseline blood sample will be collected for ctDNA-based ESR1 mutation testing using testing methods applied in routine clinical practice, including but not limited to quantitative polymerase chain reaction (qPCR), digital polymerase chain reaction (dPCR), and next-generation sequencing (NGS), according to local availability and site capability. Testing will be performed in validated laboratories in accordance with local standard operating procedures.

Patients who are negative for ESR1 mutation at baseline will undergo longitudinal ctDNA monitoring approximately every 12 weeks (+/-4 weeks), for up to 18 months or 6 testing time points from initial testing, whichever occurs first. Patients who test positive for ESR1 mutation at baseline or during follow-up will discontinue further study surveillance and will continue to receive routine clinical care as determined by the treating physician. The date of first ESR1 mutation detection will be recorded.

The primary objectives are to determine the prevalence of ESR1 mutations at baseline and the emergence rate and time to emergence of ESR1 mutations during the surveillance period among patients who are ESR1 negative at initial testing. Secondary objectives include assessment of ESR1 mutation frequency by duration of first-line therapy and by testing method, distribution of specific ESR1 mutation subtypes, co-mutations with other clinically relevant biomarkers when available, patient clinical and sociodemographic characteristics, testing and treatment patterns, and associations between ESR1 mutation status and relevant patient or treatment factors.

Approximately 3,000 patients are planned to be enrolled at about 30 sites in 15 countries across Asia, Latin America, and the Middle East and Africa. The estimated recruitment period is 12 months.

研究の種類

観察的

入学 (推定)

3000

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

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

サンプリング方法

非確率サンプル

調査対象母集団

Adults with HR-positive/HER2-negative advanced breast cancer (aBC), receiving first-line aromatase inhibitor (AI) plus CDK4/6 inhibitor therapy for 6-18 months, without disease progression, and with unknown ESR1 status at baseline.

説明

Inclusion Criteria:

  • Age 18 years or older at the time of informed consent and willing and able to provide informed consent before any study-related procedures.
  • Histologically- or cytologically-confirmed hormone receptor-positive (ER- and/or progesterone receptor-positive), human epidermal growth factor receptor 2-negative (HER2-negative) advanced breast cancer.
  • Receiving first-line therapy with an aromatase inhibitor in combination with a CDK4/6 inhibitor for at least 6 months and no more than 18 months, with no evidence of disease progression at study entry, as assessed by the investigator.
  • Able and willing to provide a blood sample for circulating tumour DNA testing for ESR1 mutation assessment at approximately quarterly intervals.

Exclusion Criteria:

  • Evidence of disease progression during first-line aromatase inhibitor plus CDK4/6 inhibitor therapy, based on investigator assessment.
  • Known ESR1 mutation status at study entry.

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

コホートと介入

グループ/コホート
介入・治療
Participants with HR-positive, HER2-negative advanced breast cancer
Adults with HR-positive, HER2-negative advanced breast cancer receiving first-line therapy with an aromatase inhibitor plus a CDK4/6 inhibitor for 6 to 18 months without disease progression at study entry. Participants undergo baseline ESR1 mutation testing using circulating tumour DNA; those with a negative baseline result may undergo follow-up testing approximately every 3 months for up to 18 months.
Blood sampling for ctDNA-based ESR1 mutation testing, which are associated with minimal additional risk and burden compared with routine clinical practice

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
Prevalence of ESR1 mutations in circulating tumour DNA
時間枠:At baseline, approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Number and proportion of patients with at least one ESR1 mutation
At baseline, approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Emergence of ESR1 mutations during longitudinal ctDNA surveillance
時間枠:At approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Number and proportion of patients who are detected with ESR1 mutation
At approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Time to first detection of an ESR1 mutation
時間枠:From first-line AI plus CDK4/6 inhibitor initiation to first ESR1 mutation detection
Time in months from initiation of first-line treatment with AI and CDK4/6 inhibitors to first detection of ESR1mutation
From first-line AI plus CDK4/6 inhibitor initiation to first ESR1 mutation detection

二次結果の測定

結果測定
メジャーの説明
時間枠
Prevalence of ESR1 mutations by duration of ongoing first-line AI plus CDK4/6 inhibitor therapy
時間枠:At baseline and at approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Number and proportion of participants with ESR1 mutations by duration of ongoing first-line therapy with an aromatase inhibitor plus a CDK4/6 inhibitor
At baseline and at approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Frequency of ESR1 mutation-positive results by testing method
時間枠:At baseline and at approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Number and proportion of participants with ESR1 mutation-positive results according to the circulating tumour DNA testing method used.
At baseline and at approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Distribution of ESR1 mutation subtypes and allele frequency
時間枠:At baseline and at approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Number and proportion of participants with specific ESR1 mutation subtypes detected by circulating tumour DNA testing.
At baseline and at approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Frequency of additional co-mutations among ESR1 mutation-positive participants
時間枠:At baseline and approximately every 3 months through study completion, up to approximately 18 months after initial ESR1 testing
Number and proportion of participants with ESR1 mutations who have at least 1 additional clinically relevant co-mutation detected, where available.
At baseline and approximately every 3 months through study completion, up to approximately 18 months after initial ESR1 testing
Baseline and follow-up characteristics of the study population
時間枠:At baseline and at approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Summary of selected sociodemographic, clinical, tumour, and testing characteristics of the study population.
At baseline and at approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Relationship between ESR1 mutation status and selected participant and treatment characteristics
時間枠:At baseline and at approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Assessment of the relationship between ESR1 mutation status and selected participant, disease, testing, and treatment characteristics.
At baseline and at approximately 3, 6, 9, 12, 15, and 18 months after initial testing
Treatment patterns for advanced breast cancer
時間枠:From enrolment through study completion, up to approximately 18 months after initial ESR1 testing
Summary of first-line treatment regimens for advanced breast cancer, including endocrine therapy and CDK4/6 inhibitor use, and duration of therapy.
From enrolment through study completion, up to approximately 18 months after initial ESR1 testing
Prior treatment patterns for early-stage breast cancer
時間枠:At baseline
Summary of prior therapies received for early-stage breast cancer in participants who later developed advanced breast cancer, including duration of therapy and reasons for discontinuation, where available.
At baseline

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

協力者

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9月30日

一次修了 (推定)

2029年3月30日

研究の完了 (推定)

2029年3月30日

試験登録日

最初に提出

2026年7月8日

QC基準を満たした最初の提出物

2026年7月8日

最初の投稿 (実際)

2026年7月14日

学習記録の更新

投稿された最後の更新 (実際)

2026年7月14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8日

最終確認日

2026年6月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • D9673L00023

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

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal Vivli.org. All requests will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

Yes, indicates that AZ are accepting requests for IPD, but this does not mean all requests will be shared

IPD 共有時間枠

AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA PhRMA Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

IPD 共有アクセス基準

When a request has been approved AstraZeneca will provide access to the anonymized individual patient-level data via secure research environment Vivli.org.

Signed Data Usage Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information.

IPD 共有サポート情報タイプ

  • STUDY_PROTOCOL
  • SAP

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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

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