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ENERGY 3 研究：评估 INZ-701 对 ENPP1 缺乏儿童的疗效和安全性

2026年9月28日 更新者：Inozyme Pharma

ENERGY 3 研究：一项随机、对照、开放标签的 3 期研究，旨在评估 INZ-701 对外核苷酸焦磷酸酶/磷酸二酯酶 1 (ENPP1) 缺乏症儿童的疗效和安全性

The primary purpose of Study INZ701-106 (The ENERGY 3 Study) is to assess the efficacy and safety of INZ-701 in children with ENPP1 Deficiency.

研究概览

地位

终止

条件

干预/治疗

详细说明

INZ-701 is an ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) enzyme replacement therapy (ERT) in development for the treatment of ENPP1 Deficiency, an ultra-rare genetic disorder with an incidence of 1 in 64,000 pregnancies.

Study INZ701-106 (The ENERGY 3 Study) is a multi-center, randomized in a 2:1 ratio, controlled, open-label Phase 3 study to evaluate the efficacy and safety of INZ-701 in children with ENPP1 Deficiency.

The study will consist of a Screening Period of up to 52 days (including a washout period of up to 7 days for prohibited medications post-Randomization) and a Randomized Treatment Period (INZ-701 or control) of 52 weeks, followed by an Open-label Extension Period during which all study participants may receive INZ-701, and an End of Study (EOS) Safety visit 30 days after the last dose of INZ-701.

研究类型

介入性

注册 (实际的)

27

阶段

  • 第三阶段

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

  • 加拿大
      • Montreal、加拿大、H3T 1C5
        • Centre Hospitalier Universitaire (CHU) Sainte-Justine
  • 土耳其（türkiye）
      • Istanbul、土耳其（türkiye）、34764
        • Umraniye Training and Research Hospital
      • Sarıçam、土耳其（türkiye）、01330
        • Cukurova Universitesi Tip Fakultesi
  • 沙特阿拉伯
      • Riyadh、沙特阿拉伯、12713
        • King Faisal Specialist Hospital and Research Centre
  • 法国
      • Le Kremlin-Bicêtre、法国、94270
        • Hôpital Bicêtre, Service d'endocrinologie et diabète de l'enfant (Childhood Endocrinology and Diabetes Department)
  • 澳大利亚
      • South Brisbane、澳大利亚、4101
        • Queensland Children's Hospital
  • 美国
    • Illinois
      • Chicago、Illinois、美国、60611
        • Ann & Robert H. Lurie Children's Hospital
    • Pennsylvania
      • Philadelphia、Pennsylvania、美国、19104
        • The Children's Hospital of Philadelphia
    • Texas
      • Fort Worth、Texas、美国、76104
        • Cook Children's Medical Center
  • 英国
      • Manchester、英国、M13 9WL
        • Royal Manchester Children's Hospital
  • 阿拉伯联合酋长国
      • Dubai、阿拉伯联合酋长国、30726
        • Al Jalila Children's Specialty Hospital

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

1年 至 12年 (孩子)

接受健康志愿者

不

有资格学习的性别

全部

描述

Inclusion Criteria

Study participants must meet all of the following inclusion criteria:

  1. Caregiver's written informed consent after the nature of the study has been explained, and prior to any research-related procedures, per International Conference on Harmonisation (ICH) Good Clinical Practice (GCP)
  2. Study participant's assent in accordance with local regulations
  3. A confirmed postnatal molecular genetic diagnosis of ENPP1 Deficiency with biallelic mutations (ie, homozygous or compound heterozygous) performed by a College of American Pathologists/Clinical Laboratory Improvement Amendments (CAP/CLIA) certified laboratory or regional equivalent
  4. Males and females ≥1 year and <13 years of age at Study Day 1
  5. Open growth plates of the distal femur and proximal tibia in both legs
  6. Plasma PPi concentration of <1400 nM at Screening
  7. 25(OH)D levels of ≥12 ng/mL at Screening
  8. Radiographic evidence of skeletal abnormalities based on an RSS ≥2
  9. Women of childbearing potential (WOCBP, as defined in Clinical Trials Coordination Group [CTCG 2024]) must have a negative serum pregnancy test at Screening and must not be breastfeeding
  10. Males who are sexually active must agree to use condoms from the period following first dose of INZ-701 through 30 days after the last dose of INZ-701
  11. WOCBP and partners of fertile males who are WOCBP must be using or must agree to use a highly effective form of (as per CTCG) from at least 1 month before the first dose of INZ-701 through 30 days after the last dose of INZ-701 (greater than 5 half-lives of INZ-701)
  12. In the opinion of the Investigator, able to complete all aspects of the study

Exclusion Criteria

Study participants meeting any of the following exclusion criteria will not be eligible to participate in the study:

  1. In the opinion of the Investigator, has clinically significant disease or laboratory abnormality not associated with ENPP1 Deficiency that will preclude study participation and/or may confound the interpretation of study results
  2. If receiving any of the following prohibited medications as indicated in the protocol: systemic corticosteroids (>5 mg prednisone equivalent per day), anti-FGF23 and oral and/or IV bisphosphonates
  3. Unable or unwilling to discontinue calcitriol or other active forms of vitamin D3 (or analogs) within 7 days prior to Study Day 1 and/or oral phosphate supplements within 36 hours prior to Study Day 1 if randomized to the INZ-701 arm
  4. Planned orthopedic surgery or other procedures that may confound the interpretation of study results during the 52-week RTP
  5. Known intolerance to INZ-701 or any of its excipients
  6. A positive COVID-19 test within 5 days prior to Randomization, only if required as per local regulations or institutional policy
  7. Previous treatment with INZ-701
  8. Concurrent participation in another interventional clinical study and/or has received an investigational drug within 5 half-lives of the last dose or within 4 weeks prior to the first dose of INZ-701, whichever is longer, or use of an investigational device

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：无（打开标签）

武器和干预

参与者组/臂
干预/治疗
实验性的：INZ-701

Subjects randomized to the INZ-701 arm will be administered a 2.4 mg/kg once weekly dose by subcutaneous (SC) injection for the duration of the 52-week Randomized Treatment Period (RTP). RTP will be followed by a Low-dose Open-label Extension Period during which all study participants will receive INZ-701 at a dose of 2.4 mg/kg QW while the primary analysis is pending. If dose escalation criteria are met, all participants will transition to the Randomized Extension Period (REP) where participants who were originally randomized to INZ-701 during RTP will transition to a higher dose regimen of INZ-701 at 1.8 mg/kg twice weekly. Participants who were originally randomized to the active control arm during RTP will continue receiving INZ-701 at 2.4 mg/kg QW in the REP.
药品：INZ-701

Recombinant fusion protein that contains the extracellular domains of human ENPP1 coupled with an Fc fragment from an immunoglobulin gamma-1 (IgG1) antibody.

其他名称：
  • (rhENPP1-Fc)。
有源比较器：Control Arm (Conventional Therapy)

Subjects randomized to the control arm will continue taking their conventional therapy as clinically indicated by their treating physician for the duration of the 52-week Randomized Treatment Period.
药品：Control Arm (Conventional Therapy)

Conventional therapy is defined as oral phosphate supplements and calcitriol or other active forms of vitamin D3 (or analogs). No other agents for treatment of ENPP1 Deficiency are allowed in the control arm.

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
Change from Baseline in Plasma Inorganic Pyrophosphate (PPi) concentration through Week 52
大体时间：52 weeks (Baseline through Week 52)

For each subject, plasma PPi will be measured via a series of blood samples obtained throughout the study, comparing the subject's baseline value over time.
52 weeks (Baseline through Week 52)
Change from Baseline in skeletal abnormalities as measured by the Radiographic Global Impression of Change (RGI-C) global score through Week 52
大体时间：52 weeks (Baseline through Week 52)

The RGI-C is an overall radiographic score which can be used to monitor response to a therapeutic intervention comparing scores from 2 time points. A determination of healing on a scale of 0 to +3 with 0 being no change or healing and +3 being complete healing; worsening is also measured on a scale of 0 to -3 with 0 being no change and -3 being severe worsening.
52 weeks (Baseline through Week 52)

次要结果测量

结果测量
措施说明
大体时间
Change from Baseline in rickets as measured by Rickets Severity Score (RSS) total score through Week 52
大体时间：Baseline, Week 26, Week 52

The RSS assesses rickets severity by utilizing a scoring system that uses a scale from 0 to 4 for the wrists and 0 to 6 for the knees, to generate a total score of 0 to 10, where 0 is normal and 10 is the worst score possible ie, most severe skeletal abnormalities observed radiographically.
Baseline, Week 26, Week 52
Change from Baseline in growth Z-score (height/body length and weight) through Week 52
大体时间：Baseline, Day 29, Week 8, Week 13, Week 26, Week 39, Week 52

A Z-score represents the degree to which that particular measurement for that individual differs from the reference value in the general population.

(height/body length and weight) through Week 52
Baseline, Day 29, Week 8, Week 13, Week 26, Week 39, Week 52
Area under the Plasma Concentration versus Time Curve (AUC) of INZ-701
大体时间：52 weeks (Randomized Treatment Period)

For each subject, variation of concentration of INZ-701 in the plasma will be measured via a series of blood samples obtained throughout the study, comparing the subject's baseline value over time.
52 weeks (Randomized Treatment Period)
Maximum Plasma Concentration (Cmax) of INZ-701
大体时间：52 weeks (Randomized Treatment Period)

For each subject, the maximum concentration of INZ-701 in the plasma will be measured via a series of blood samples obtained throughout the study, comparing the subject's baseline value over time.
52 weeks (Randomized Treatment Period)
Change from Baseline in ENPP1 activity (µM/min) through week 52
大体时间：52 weeks (Randomized Treatment Period)

For each subject, the activity of INZ-701 (µM/min) in the serum will be assessed through hydrolysis of a substrate to the enzyme, via a series of blood samples obtained throughout the study, comparing the subject's baseline value over time.
52 weeks (Randomized Treatment Period)

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

Inozyme Pharma

合作者

BioMarin Pharmaceutical

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)

2023年11月5日

初级完成 (实际的)

2026年1月29日

研究完成 (实际的)

2026年8月19日

研究注册日期

首次提交

2023年8月28日

首先提交符合 QC 标准的

2023年9月18日

首次发布 (实际的)

2023年9月21日

研究记录更新

最后更新发布 (实际的)

2026年10月1日

上次提交的符合 QC 标准的更新

2026年9月28日

最后验证

2026年9月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • INZ701-106

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

在美国制造并从美国出口的产品

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.

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