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Study of Treprostinil Administered Via Soft Mist Inhaler (SMI) in Participants With Pulmonary Hypertension Associated With Chronic Obstructive Pulmonary Disease (PH-COPD) (SUMMIT 201)

2026年11月2日 更新者:United Therapeutics

A Multicenter, Randomized, Double-blind, Placebo-controlled, Phase 2 Study to Evaluate the Safety and Tolerability of Treprostinil Administered Via a Soft Mist Inhaler (SMI) in Participants With Pulmonary Hypertension Associated With Chronic Obstructive Pulmonary Disease (PH-COPD)

The primary purpose of this study is to evaluate the safety and tolerability of treprostinil administered with a soft mist inhaler (SMI) over 16 weeks in approximately 40 participants with PH-COPD.

調査の概要

詳細な説明

SMI-PH-201 is a Phase 2, randomized, double-blind, placebo-controlled, parallel-group, multicenter, safety and tolerability study with secondary endpoints evaluating the efficacy of the study drug on exercise capacity and NT-proBNP.

Eligible participants will be randomly assigned 1:1 to treprostinil SMI or placebo at the Baseline Visit and receive study drug over a 16-week period. Participants will return to the clinic for follow-up visits at Weeks 4, 8, 12, 15, and 16.

Study drug will be administered via a combination drug-device product that consists of the SMI with an associated cartridge containing a propellant-free, liquid-based formulation of treprostinil inhalation spray. Participants will receive study drug in multi-use cartridges containing either treprostinil (in concentrations of 1.34, 2.68, 4.02, and 5.36 mg/mL) or placebo.

研究の種類

介入

入学 (推定)

40

段階

  • フェーズ2

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

研究場所

    • Alabama
      • Birmingham、Alabama、アメリカ、35233
        • University of Alabama at Birmingham, Lung Health Center
    • Arizona
      • Phoenix、Arizona、アメリカ、85006
        • Banner University Medical Center Phoenix
      • Tucson、Arizona、アメリカ、85719
        • University of Arizona/Banner Health
    • California
      • Palo Alto、California、アメリカ、94305
        • Stanford Health Care
      • San Francisco、California、アメリカ、94143
        • University of California San Francisco Medical Center
    • Illinois
      • Chicago、Illinois、アメリカ、60637
        • University of Chicago Medical Center
    • Kentucky
      • Lexington、Kentucky、アメリカ、40536
        • University of Kentucky
    • Massachusetts
      • Boston、Massachusetts、アメリカ、02115
        • Brigham and Women's Hospital
      • Boston、Massachusetts、アメリカ、02114
        • Massachusetts General Hospital
    • Michigan
      • Detroit、Michigan、アメリカ、48202
        • Henry Ford Health System
    • North Carolina
      • Chapel Hill、North Carolina、アメリカ、27514
        • University of North Carolina at Chapel HIll
    • Pennsylvania
      • Philadelphia、Pennsylvania、アメリカ、19140
        • Temple University Hospital
      • Pittsburgh、Pennsylvania、アメリカ、15213
        • University of Pittsburgh Medical Center
    • South Carolina
      • Charleston、South Carolina、アメリカ、29425
        • Medical University of South Carolina
    • Texas
      • Dallas、Texas、アメリカ、75246
        • Baylor University Medical Center
    • Virginia
      • Falls Church、Virginia、アメリカ、22042
        • Inova Fairfax Hospital

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:

  1. Give voluntary informed consent to participate in the study

  2. Are ≥18 years of age, inclusive, at the time of signing informed consent

  3. Willing to undergo right heart catheterization (RHC) during Screening. A RHC performed within 12 months prior to the Baseline Visit is acceptable for determining eligibility, even if done without oxygen or vasodilator challenge, and repeat RHC is not required. The following parameters must be documented for eligibility:

    1. Pulmonary vascular resistance ≥4 Wood units
    2. Pulmonary capillary wedge pressure or left ventricular end diastolic pressure ≤15 mmHg
  4. Diagnosis of PH-COPD (WHO Group 3) with the following documented parameters at Screening:

    1. FEV1 ≥35%
    2. FEV1/FVC <70%
  5. Resting SpO2 ≥90%, with or without supplemental oxygen by any mode of delivery and supplemental O2 ≤8 L/min at rest at Screening

  6. If on chronic COPD medication, must be on a stable and optimized dose for ≥45 days prior to the Baseline Visit

  7. Women of childbearing potential (WOCBP) must be nonpregnant (as confirmed by a pregnancy test at Screening and Baseline) and nonlactating and agree to use 1 of the following:

    1. Abstain from penile-vaginal intercourse (when it is in line with their preferred and usual lifestyle) OR
    2. Use medically acceptable, highly effective contraception for the duration of the study and at least 30 days after discontinuing study drug. Medically acceptable, highly effective forms of contraception include approved hormonal contraceptives (oral, injectable, transdermal, intravaginal, and implantable), hormonal or non-hormonal intrauterine devices or systems, or monogamous intercourse with a partner who has undergone vasectomy. Barrier methods alone or with spermicide may be considered with Sponsor approval if they have a proven track record of excellent compliance. Note: Women who are successfully sterilized (including hysterectomy, bilateral salpingectomy, bilateral tubal occlusion, or bilateral oophorectomy) or postmenopausal (defined as amenorrhea for at least 12 consecutive months and >50 years of age or in the documented clinical opinion of a Women's Health Specialist) are not considered to be WOCBP for study purposes.
  8. Males with a partner of childbearing potential must agree to use a condom for the duration of treatment and for at least 48 hours after discontinuing study drug

  9. In the opinion of the Investigator, able to communicate effectively with study site staff, and considered reliable, willing, and likely to be cooperative with protocol requirements, including attending all study visits

Exclusion Criteria:

  1. 6MWD <150 meters during Screening

  2. DLCO ≤25% during Screening

  3. Pregnant or lactating

  4. Known intolerance or significant lack of efficacy to a prostacyclin or prostacyclin analogue that resulted in discontinuation or inability to effectively titrate that therapy

  5. Confirmed diagnosis of PAH or PH for any reason other than associated with COPD

  6. Received any PAH-approved therapy within 60 days prior to Baseline. As needed (PRN) use of a PDE5-I (eg, sildenafil, tadalafil, vardenafil) for erectile dysfunction is permitted. Daily use of a PDE5-I, even if for an indication other than PH, is not allowed.

  7. Unable or unwilling to use Sponsor-provided devices (eg, SMI)

  8. Confirmed diagnosis of idiopathic pulmonary fibrosis, combined pulmonary fibrosis and emphysema, diffuse parenchymal lung disease, or interstitial lung disease. Redacted computed tomography scan results conducted within 6 months prior to Baseline must be provided to the Sponsor's Medical Monitor with the Pre Baseline Form to confirm eligibility.

  9. Previous diagnosis of homozygous alpha-1 antitrypsin deficiency

  10. Myocardial infarction within 6 months prior to Baseline or unstable angina within 30 days prior to Baseline

  11. Evidence of clinically significant left-sided heart disease (including, but not limited to, left ventricular ejection fraction <40% and/or left ventricular hypertrophy) or clinically significant cardiologic conditions, such as congestive heart failure, coronary artery disease, or valvular heart disease. Note: Participants with abnormal left ventricular function attributable to the effects of right ventricular overload will not be excluded, but a discussion with and approval by the Sponsor's Medical Monitor is required.

  12. Any form of congenital heart disease (repaired or unrepaired) other than a patent foramen ovale

  13. Recent exacerbation of COPD and/or active pulmonary or upper respiratory infection that required hospitalization, symptomatic treatment, or treatment with antibiotics and/or corticosteroids:

    1. If hospitalized, within 180 days prior to Baseline
    2. If not hospitalized, within 90 days prior to Baseline
  14. Initiation of pulmonary rehabilitation within 12 weeks prior to Baseline or, in the opinion of the Investigator, pulmonary rehabilitation is likely to be needed during the Treatment Period

  15. Use of any other investigational drug/device or participation in any investigational study in which the participant received a medical intervention (ie, procedure, device, medication/supplement) within 30 days prior to Baseline. Participation in non-interventional, observational, or registry studies is permitted.

  16. In the opinion of the Investigator, the participant has any condition that would interfere with the interpretation of study assessments, study participation or cooperation, or has any disease or condition (ie, peripheral vascular disease, musculoskeletal disorder, morbid obesity) that would likely be the primary limit to ambulation (as opposed to PH)

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:処理
  • 割り当て:ランダム化
  • 介入モデル:並列代入
  • マスキング:トリプル

武器と介入

参加者グループ / アーム
介入・治療
実験的:treprostinil SMI

Inhaled treprostinil administered via a SMI at concentrations of 1.34, 2.68, 4.02, and 5.36 mg/mL

Inhaled treprostinil administered via a SMI four times daily in concentrations of 1.34, 2.68, 4.02, and 5.36 mg/mL

プラセボコンパレーター:placebo

Inhaled placebo administered via a SMI

Placebo administered via a SMI

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
Incidence of serious adverse events, severe adverse events, cardiopulmonary hospitalizations, and deaths
時間枠:16 weeks

Number and type of serious adverse events, severe adverse events, cardiopulmonary hospitalizations, and deaths observed in participants during and after use of inhaled treprostinil and placebo.

16 weeks

二次結果の測定

結果測定
メジャーの説明
時間枠
Change in peak 6-Minute Walk Distance (6MWD) from baseline to Week 16
時間枠:16 weeks

The intent of the 6MWD test is to evaluate exercise capacity associated with carrying out activities of daily living. Change in 6MWD from baseline to Week 16 correlates with the current clinical standard for assessing patient functional status in the treatment of PH and is considered an objective measure of patient functional status. Participants will be instructed to walk down a corridor at a comfortable speed as far as they can manage for six minutes. Peak exposure 6MWD will occur by conducting the 6-minute walk test within 10 to 60 minutes after the most recent dose of study drug.

16 weeks
Change in trough 6MWD from baseline to Week 15
時間枠:15 weeks

The intent of the 6MWD test is to evaluate exercise capacity associated with carrying out activities of daily living. Change in 6MWD from baseline to Week 15 correlates with the current clinical standard for assessing patient functional status in the treatment of PH and is considered an objective measure of patient functional status. Participants will be instructed to walk down a corridor at a comfortable speed as far as they can manage for six minutes. Trough exposure 6MWD will occur by conducting 6-minute walk test at least four hours after the most recent study drug dose.

15 weeks
Change in N-terminal pro-brain natriuretic peptide (NT-proBNP) from baseline to Week 16
時間枠:16 weeks

The NT-proBNP serum concentration is a useful biomarker associated with changes in right heart morphology and function. NT-proBNP serum concentration will be assessed to compare the severity of heart failure at baseline and Week 16.

16 weeks
Change in overall adverse events
時間枠:16 weeks

The incidence of adverse events among participants throughout the 16-week study will be measured by the number of participants analyzed and the percentage of those participants who experienced an adverse event.

16 weeks
Change in Forced Expiratory Volume in One Second (FEV1) as % predicted
時間枠:16 weeks

FEV1 is a standard indicator of lung function and measures the maximal amount of air forcefully exhaled in 1 second.

16 weeks
Change in Forced Vital Capacity (FVC) in mL
時間枠:16 weeks

FVC is a standard indicator of lung function and measures the amount of air a person can forcefully and quickly exhale after taking a deep breath.

16 weeks
Change in FEV1/FVC ratio
時間枠:16 weeks

The FEV1/FVC ratio measures how much air is exhaled in one second compared to a full breath. This helps determine if the lung condition is restrictive or obstructive and its severity.

16 weeks
Change in Total Lung Capacity (TLC) in mL
時間枠:16 weeks

TLC is a standard indicator of lung function and measures the maximum volume of lung capacity after very deep inhalation.

16 weeks
Change in Lung Diffusion Capacity (DLCO) as % predicted
時間枠:16 weeks

DLCO is a standard indicator of lung function and measures how well oxygen moves from the lungs to the blood.

16 weeks
Change in the saturation of peripheral capillary oxygenation (SpO2)
時間枠:16 weeks

Pulse oximetry will measure SpO2 as a percentage, indicating hypoxemia and respiratory distress.

16 weeks
Change in supplemental oxygen use
時間枠:16 weeks

Supplemental oxygen use, as measured in L, indicates chronic hypoxemia.

16 weeks
Change in 12-lead electrocardiogram (ECG)
時間枠:16 weeks

The 12-lead ECG measures electrical cardiac activity, including heart rate and rhythm (PR interval, QT interval, QT interval corrected for heart rate by Fridericia's formula, and QRS duration).

16 weeks
Incidence of acute exacerbations of COPD
時間枠:16 weeks

An acute exacerbation of COPD is defined as an event characterized by increased dyspnea and/or cough and sputum that worsens in <14 days, which may be accompanied by tachypnea and/or tachycardia, and is often associated with increased local and systemic inflammation caused by infection, pollution, or other insult to the airways. For this study, the following diagnostic criteria will be used to support a diagnosis of acute COPD exacerbation:

  • Previous or concurrent diagnosis of COPD
  • Acute worsening or development of dyspnea typically of less than 14-day duration
  • Deterioration not fully explained by heart failure, pneumonia, or pulmonary embolism
16 weeks

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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11月1日

一次修了 (推定)

2028年5月1日

研究の完了 (推定)

2028年5月1日

試験登録日

最初に提出

2026年10月19日

QC基準を満たした最初の提出物

2026年11月2日

最初の投稿 (実際)

2026年11月6日

学習記録の更新

投稿された最後の更新 (実際)

2026年11月6日

QC基準を満たした最後の更新が送信されました

2026年11月2日

最終確認日

2026年11月1日

詳しくは

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