此页面是自动翻译的,不保证翻译的准确性。请参阅 英文版 对于源文本。

Prospective Study to Evaluate the Clinical Utility of ctDNA Tumor Fraction (TF) for Detection of Estrogen Receptor 1 (ESR1) Mutations in (Human Epidermal Growth Factor Receptor) HR+/HER2- Metastatic Breast Cancer (MBC)

2026年11月2日 更新者:Yale University

Prospective Study to Evaluate the Clinical Utility of ctDNA Tumor Fraction (TF) for Detection of ESR1 Mutations in HR-positive HER2-negative Metastatic Breast Cancer (MBC)

This is a prospective, single center, single-arm interventional study to evaluate the clinical utility of protocol-mandated diagnostic testing algorithm incorporating liquid biopsy and reflex tissue biopsy NGS for detection of ESR1 mutations in HR+/HER- metastatic breast cancer.

研究概览

地位

尚未招聘

条件

干预/治疗

详细说明

Participants are prospectively assigned to undergo ctDNA testing with FoundationOne® Liquid CDx (F1LCDx) at protocol-defined clinical decision points. Participants with an indeterminate negative F1LCDx result (ctDNA TF <1% and negative for ESR1mut) are assigned to undergo reflex tissue biopsy NGS unless deemed medically unsafe. The protocol does not mandate treatment selection; treating clinicians retain full discretion regarding therapy.All research-related procedures will be performed at the time of standard of care clinical visits. No extra visits outside of routine care are required. For participants with algorithm-detected ESR1 mutations, serial Electronic Medical Record review will be performed for up to 2 years to track subsequent treatment patterns, progression events, and survival status to assess other clinical outcomes associated with subsequent SERD-based regimens compared with historical clinical trial benchmarks.

This study will guide clinical decision-making for acquiring new tissue specimens following an indeterminate negative ESR1mut result from liquid biopsy, which is a critical step to ensure accurate detection of actionable mutations and enable the selection of the most appropriate targeted therapy

研究类型

介入性

注册 (估计的)

155

阶段

  • 不适用

联系人和位置

本节提供了进行研究的人员的详细联系信息,以及有关进行该研究的地点的信息。

学习联系方式

学习地点

    • Connecticut
      • New Haven、Connecticut、美国、06520
        • Yale New Haven Hospital - Yale Cancer Center

参与标准

研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

18年 及以上 (成人、年长者)

接受健康志愿者

不

有资格学习的性别

全部

描述

Inclusion Criteria:

  • Diagnosis of metastatic breast cancer that is hormone receptor-positive (ER≥10%), HER2 low or negative (defined as HER2 Imunohistochemistry (IHC) 0, 1+ or IHC 2+/In Situ Hybridization (ISH)-).
  • Progression of metastatic breast cancer that is hormone receptor-positive (ER≥10%), HER2 low or negative (defined as HER2 IHC 0, 1+ or IHC 2+/ISH-) while on systemic therapy.
  • Currently receiving or have previously received aromatase inhibitor therapy.

Exclusion Criteria:

  • Patients with locally or regionally recurrent breast cancer without evidence of metastatic disease.
  • De novo metastatic breast cancer.
  • Presence of symptomatic metastatic visceral crisis.
  • Participants with inflammatory breast cancer.
  • Intact uterus with a history of endometrial intraepithelial neoplasia (atypical endometrial hyperplasia or higher-grade lesion).
  • Diagnosis of any other malignancy within 5 years before enrollment, except for adequately treated basal cell or squamous cell skin cancer, superficial bladder cancer, carcinoma in situ of the cervix, or second primary breast cancer.
  • Other conditions that, in the opinion of the treating investigator, would preclude the patient from meeting the study requirements or interfere with interpretation of study results.
  • Pregnant and breastfeeding women are excluded from the study

学习计划

本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。

研究是如何设计的?

设计细节

  • 主要用途:诊断
  • 分配:不适用
  • 介入模型:单组作业
  • 屏蔽:无(打开标签)

武器和干预

参与者组/臂
干预/治疗
实验性的:HR+/HER- metastatic breast cancer at diagnosis or experiencing disease progression

Participants with ESR1 mutations in HR+/HER- metastatic breast cancer undergoing tissue biopsy for ctDNA Tumor Fraction (TF) testing using next-generation sequencing (NGS) after an indeterminate negative result in liquid biopsy (F1LCDx).

Blood test that analyzes cancer-related genes from a single blood draw

Reflex tissue biopsy using an Next-generation sequencing (NGS) test

研究衡量的是什么?

主要结果指标

结果测量
措施说明
大体时间
Number of participants with ESR1 mutations detected by reflex tissue NGS
大体时间:From enrollment through study completion (up to 5 years)

Among participants with an indeterminate-negative liquid biopsy result (negative for ESR1 mutations and ctDNA tumor fraction below 1%), measure the number of participants with an ESR1 mutation detected by reflex tissue NGS performed according to the study algorithm.

From enrollment through study completion (up to 5 years)

次要结果测量

结果测量
措施说明
大体时间
Progression-free survival (PFS)
大体时间:Up to 2 years after positive ESR1 mutation detection

Time from initiation of the first selective estrogen receptor degrader (SERD) after ESR1 mutation detection until objective disease progression, assessed using RECIST version 1.1 when available, or death from any cause, whichever occurs first.

Up to 2 years after positive ESR1 mutation detection
Rate of ESR1 mutation detection by liquid biopsy and ctDNA tumor fraction
大体时间:Throughout the study, up to 5 years

Rate of ESR1 mutation detection by FoundationOne Liquid CDx (F1LCDx), stratified by ctDNA tumor fraction below 1% versus 1% or greater.

Throughout the study, up to 5 years
Reflex Tissue NGS testing rate
大体时间:Within the reflex testing time frame during the study, up to 5 years

Number of participants with an indeterminate-negative liquid biopsy result who undergo reflex tissue biopsy and NGS within the protocol-defined timeframe.

Within the reflex testing time frame during the study, up to 5 years
Number participants initiating Selective Estrogen Receptor Degraders (SERD) therapy
大体时间:Throughout the study, up to 5 years

Number participants initiating SERD therapy after ESR1 mutation detection

Throughout the study, up to 5 years
Number participants SERD therapy by SERD agent
大体时间:Throughout the study, up to 5 years

Number participants initiating SERD therapy after ESR1 mutation detection. Report counts by SERD agent, with FDA-approved SERDs grouped by class as applicable.

Throughout the study, up to 5 years
Actionable genomic alterations detected by liquid biopsy and tissue NGS.
大体时间:Throughout the study, up to 5 years

Rtes of actionable genomic alterations detected by F1LCDx and tissue NGS.

Throughout the study, up to 5 years
Other genomic alterations detected at disease progression
大体时间:At disease progression during the study, up to 5 years

Rates of driver and acquired genomic alterations detected at progression by F1LCDx or tissue NGS that were absent from prior tissue comprehensive genomic profiling (CGP). Acquired alterations are those absent from tissue CGP at diagnosis but newly detected at progression.

At disease progression during the study, up to 5 years
Correlation of HRR gene findings with variant origin and germline confirmation
大体时间:During the study, when the relevant genomic and confirmatory testing results are available, up to 5 years

Assess the relationship between homologous recombination repair (HRR) gene detection, variant origin prediction, germline banner classification when F1LCDx is performed, and confirmation of germline alterations by orthogonal testing.

During the study, when the relevant genomic and confirmatory testing results are available, up to 5 years
Correlation of HER2 status with ERBB2 copy number
大体时间:During the study, when the relevant HER2 status and genomic results are available, up to 5 years

Assess the relationship between HER2-low or HER2-negative status and ERBB2 copy number results when F1CDx is performed.

During the study, when the relevant HER2 status and genomic results are available, up to 5 years

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

合作者

调查人员

  • 首席研究员:Jing Du, MD、Yale University

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (估计的)

2026年11月1日

初级完成 (估计的)

2031年10月1日

研究完成 (估计的)

2031年10月1日

研究注册日期

首次提交

2026年10月26日

首先提交符合 QC 标准的

2026年10月26日

首次发布 (实际的)

2026年11月2日

研究记录更新

最后更新发布 (实际的)

2026年11月5日

上次提交的符合 QC 标准的更新

2026年11月2日

最后验证

2026年11月1日

更多信息

与本研究相关的术语

其他研究编号

  • 2000038562

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)?

不

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

不

此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.