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Harmony-HHT: ATV-1601 in Participants With Hereditary Hemorrhagic Telangiectasia (HHT)

2026年10月28日 更新者:Atavistik Bio, Inc

A Randomized, Placebo-Controlled, Double-Blind, Proof-of-Concept Study of ATV-1601 in Participants With Hereditary Hemorrhagic Telangiectasia (HHT)

This is a 2-part study evaluating ATV-1601 in participants with moderate to severe HHT. Part 1 is a randomized, double-blind, placebo-controlled study evaluating 3 dosing regimens of ATV-1601. Patients completing Part 1 may participate in the Part 2 open-label extension to receive ATV-1601.

研究概览

详细说明

Part 1: This is a Phase 1/2 proof-of-concept, double-blind, multicenter, placebo-controlled study to evaluate the safety, pharmacokinetics and efficacy of 3 oral dosing regimens of ATV-1601. Participants who meet eligibility requirements will be randomized in a double-blind manner to one of 3 doses of ATV-1601 or placebo. Participants will receive double-blind study treatment for a 16-week period.

Part 2: Eligible participants who complete Part 1 may enroll in an open-label extension study to receive up to 2 years of additional treatment. All participants in the open-label extension will receive ATV-1601. Once the recommended Phase 2 dose (RP2D) is determined based on Part 1, all participants in Part 2 will have the option to switch to the RP2D.

研究类型

介入性

注册 (估计的)

100

阶段

  • 阶段2
  • 阶段1

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。

学习地点

    • Arizona
      • Phoenix、Arizona、美国、85013
    • Georgia
      • Augusta、Georgia、美国、30912
    • Indiana
      • Indianapolis、Indiana、美国、46260
    • Massachusetts
      • Boston、Massachusetts、美国、02114
    • Minnesota
      • Rochester、Minnesota、美国、55905
    • Missouri
      • St Louis、Missouri、美国、63110
    • North Carolina
      • Chapel Hill、North Carolina、美国、27599
    • Utah
      • Salt Lake City、Utah、美国、84132
        • 招聘中
        • University of Utah Health Sciences Center
        • 接触:

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

是的

有资格学习的性别

全部

描述

Inclusion Criteria:

  • Ability to provide informed consent prior to any study-specific procedures
  • Confirmed diagnosis of hereditary hemorrhagic telangiectasia (HHT) based on Curaçao criteria
  • Moderate to severe HHT with an ESS ≥ 4
  • Anemia at Screening and/or requirement for at least 1 red-cell unit (RUE) in the previous 6 months
  • Adequate hematologic, renal, and hepatic function per protocol-defined laboratory criteria
  • Use highly effective contraception during the study and for a protocol-defined period after last dose

Exclusion Criteria:

  • Clinically significant abnormalities of glucose metabolism including diagnosed Type 1 or uncontrolled Type 2 diabetes
  • Chronic cardiac disease, or cardiac rhythm abnormalities
  • History of significant cardiovascular, hepatic, renal, or hematologic disease not related to HHT that may confound study results
  • Use of prohibited concomitant medications within a protocol-defined washout period prior to first dose (including strong CYP modulators and certain herbal supplements)
  • Recent (within 6 weeks) major surgery or local ablative procedures, or procedures on nasal telangiectasias
  • Prior AKT inhibitor
  • Pregnant or breastfeeding women

Additional Criteria for Open-Label Extension:

  • Participants must complete the double-blind treatment period (Part 1)

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:治疗
  • 分配:随机化
  • 介入模型:并行分配
  • 屏蔽:四人间

武器和干预

参与者组/臂
干预/治疗
实验性的:Part 1: 60 mg QD

Active drug, once daily

Administered orally, daily

其他名称:
  • Active drug, capsule
实验性的:Part 1: 100 mg QD

Active drug, once daily

Administered orally, daily

其他名称:
  • Active drug, capsule
实验性的:Part 1: 60 BID

Active drug, twice daily

Administered orally, daily

其他名称:
  • Active drug, capsule
实验性的:Part 1: Placebo

Control Arm

Administered orally, daily

其他名称:
  • Inactive, Placebo

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
Part 1: Safety and tolerability
大体时间:16 weeks

Number and severity of treatment-emergent adverse events (TEAEs) and study drug-related TEAEs

16 weeks
Part 2: Safety and tolerability
大体时间:24 months

Type, incidence, severity, timing, seriousness and relatedness of AEs and laboratory abnormalities

24 months

次要结果测量

结果测量
措施说明
大体时间
Part 1: Change in Epistaxis duration
大体时间:16 weeks

28-day total duration compared to baseline

16 weeks
Part 1: Epistaxis frequency
大体时间:16 weeks

28-day frequency of nosebleeds compared to baseline

16 weeks
Part 1: Epistaxis intensity
大体时间:16 weeks

28-day average epistaxis intensity (6-point scale) of nosebleeds compared to baseline

16 weeks
Part 1: Intensity-weighted epistaxis duration
大体时间:16 weeks

28-day intensity-weighted duration of nosebleeds

16 weeks
Part 1: Epistaxis Severity Score (ESS)
大体时间:16 weeks

The Epistaxis Severity Score (ESS) is a validated 6-question instrument with scores ranging from 0 to 10, where higher scores indicate more severe epistaxis symptoms.

16 weeks
Part 1: Change in Hemoglobin
大体时间:16 weeks

Hemoglobin levels compared to baseline

16 weeks
Part 1: Change in Parenteral iron use
大体时间:16 weeks

Amount of parenteral iron administered compared to 16-weeks prior to treatment initiation

16 weeks
Part 1: Change in Blood transfusion requirements
大体时间:16 Weeks

Amount of packed red blood cell (PRBC) transfusions and rate of transfusion independence compared to 16-weeks prior to treatment initiation

16 Weeks
Part 1: Pharmacokinetics - Maximum observed concentration (Cmax)
大体时间:16 Weeks

Maximum plasma concentration

16 Weeks
Part 1: Pharmacokinetics - Area under the concentration-time curve over the dosing interval (AUCtau)
大体时间:16 Weeks

Systemic exposure of ATV-1601 over the dosing interval

16 Weeks
Part 1: Pharmacokinetics - Area under the concentration-time curve extrapolated to infinity (AUCinf)
大体时间:16 Weeks

Total systemic exposure of ATV-1601 extrapolated to infinite time

16 Weeks
Part 1: Pharmacokinetics - Time to maximum concentration (Tmax)
大体时间:16 Weeks

Time to reach maximum plasma concentration

16 Weeks
Part 1: Pharmacokinetics - minimum concentration (Cmin)
大体时间:16 Weeks

Pre-dose trough plasma concentration

16 Weeks
Part 1: Pharmacokinetics - Half-life (t½)
大体时间:16 Weeks

Time required for plasma concentration to decrease by half

16 Weeks
Part 2: Epistaxis duration
大体时间:Up to 2 years

28-day total duration every 4 weeks

Up to 2 years
Part 2: Epistaxis frequency
大体时间:Up to 2 years

Total number of nosebleeds every 4 weeks

Up to 2 years
Part 2: Epistaxis Severity Score (ESS)
大体时间:At 12 weeks and every 12 weeks thereafter up to study completion

Severity of nosebleeds using a score of 0-10 automatically calculated based on responses to 6 questions.

At 12 weeks and every 12 weeks thereafter up to study completion
Part 2: Change in Hemoglobin
大体时间:Monthly during Part 2

Hemoglobin levels compared to baseline

Monthly during Part 2
Part 2: Parenteral iron use
大体时间:At 12 weeks and every 12 weeks thereafter up to study completion

Total amount of parenteral iron infused (mg) compared to baseline (12 weeks prior to treatment initiation

At 12 weeks and every 12 weeks thereafter up to study completion
Part 2: Blood transfusion requirements
大体时间:At 12 weeks and every 12 weeks thereafter during part 2

Total number of packed red blood cell (PRBC) transfusions (units) compared to baseline

At 12 weeks and every 12 weeks thereafter during part 2
Part 2: Transfusion independence
大体时间:At 12 weeks and every 12 weeks thereafter during part 2

Proportion of participants who do not require PRBC transfusions

At 12 weeks and every 12 weeks thereafter during part 2

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。

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 (实际的)

2026年7月27日

初级完成 (估计的)

2027年12月1日

研究完成 (估计的)

2030年3月1日

研究注册日期

首次提交

2026年5月12日

首先提交符合 QC 标准的

2026年5月15日

首次发布 (实际的)

2026年5月22日

研究记录更新

最后更新发布 (实际的)

2026年10月29日

上次提交的符合 QC 标准的更新

2026年10月28日

最后验证

2026年8月1日

更多信息

与本研究相关的术语

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

是的

研究美国 FDA 监管的设备产品

不

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