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Last Updated: January 1, 2026

CLINICAL TRIALS PROFILE FOR TYVASO DPI


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All Clinical Trials for TYVASO DPI

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00147199 ↗ Clinical Investigation Into Inhaled Treprostinil Sodium in Patients With Severe Pulmonary Arterial Hypertension (PAH) Completed United Therapeutics Phase 3 2005-06-01 This is a double-blind placebo-controlled clinical investigation into the efficacy and tolerability of inhaled treprostinil in patients with severe pulmonary arterial hypertension. The primary outcome is the change in 6-minute walk distance from baseline to week 12.
NCT00741819 ↗ Safety Evaluation of Inhaled Treprostinil Administration Following Transition From Inhaled Ventavis in Pulmonary Arterial Hypertension (PAH) Subjects Completed United Therapeutics Phase 4 2008-09-01 This is a 24-month, multi-center, prospective, open-label, safety evaluation in PAH subjects following transition from a stable dose of inhaled iloprost (Ventavis). Subjects are to be evaluated for safety throughout the course of the study while secondary assessments will be conducted at Baseline, Week 6, Week 12, and Months 6, 12, 18 and 24 following initiation of treprostinil sodium.
NCT01266265 ↗ Study of Incidence of Respiratory Tract AEs in Patients Treated With Tyvaso® Compared to Other FDA Approved PAH Therapies Completed United Therapeutics 2010-12-01 A surveillance of respiratory tract related adverse events in patients treated with Tyvaso®(treprostinil) Inhalation Solution versus other FDA approved therapies
NCT01268553 ↗ Transition From Injectable Prostacyclin Medication to Inhaled Prostacyclin Medication Completed United Therapeutics Phase 4 2010-08-01 The purpose of this study is to assess tolerability and clinical effects of transition from intravenous (IV, needle in the vein) or subcutaneous (SQ, needle in the skin) to the recently-approved inhaled treprostinil (Tyvaso) for the treatment of pulmonary arterial hypertension (PAH). Our hypothesis is that the transition to inhaled treprostinil will be tolerated by patients. The intravenous and subcutaneous drugs epoprostenol and treprostinil received approval for treatment of PAH many years ago. While these medications improve exercise capacity and the symptoms of PAH, they are given by injection and thus have several side effects, such as pain and catheter infection. This has resulted in many patients either refusing to take the medication or quitting these medications because of not tolerating them. The only other form of prostacyclin treatment available for PAH patients is inhaled. There are 2 inhaled prostacyclins approved for PAH, however one of these requires at least 6 inhalations per day, every day, and takes about 30 minutes to inhale each time. Thus, it has not been a regularly-used medication and issues surrounding compliance make it a riskier drug to use if patients do not get their full doses every day. The other inhaled medication, treprostinil, was approved a few months ago, only needs to be given 4 times a day, and takes about 2-3 minutes to inhale. Since inhaled treprostinil can be administered easily, it is anticipated that many patients will transition from epoprostenol or treprostinil to the recently approved inhaled treprostinil, however we do not know if this is a safe or effective way to manage patients. Thus, the goal of this prospective study is to gather observational data regarding how that switch is made, tolerability of the switch, and, to the extent possible with this methodology, assess clinical effects of the switch. This is a prospective study. Twenty patients > 18 years old with PAH will be enrolled. Patients enrolled will be those in whom a clinical decision to convert from either IV epoprostenol, IV treprostinil, or SQ treprostinil to inhaled treprostinil therapy has been made. This is usually the result of patients asking to switch to inhaled therapy, but only allowed by physicians if they feel the switch would be safe. If eligible, and after informed consent, patients will have a history and physical examination, a 6 min walk test, a cardiopulmonary exercise test (CPET), blood tests, and a symptom questionnaire will be filled out. Patients will then be admitted to the hospital where a monitoring catheter will be placed inside the patient's heart and inhaled treprostinil will be initiated, while the dose of IV/SQ medication is reduced over about 24-26 hours. Clinical follow-up will be at weeks 1, 4, and 12. The procedures above are all part of the routine clinical care that patients would receive if they were to be transitioned to inhaled therapy, including the hospitalization and catheterization. The criteria for them to be able to be switched are conservative. Pressure in their heart and lungs must be low (mPAP < 40 mmHg and RAP
NCT01268553 ↗ Transition From Injectable Prostacyclin Medication to Inhaled Prostacyclin Medication Completed Los Angeles Biomedical Research Institute Phase 4 2010-08-01 The purpose of this study is to assess tolerability and clinical effects of transition from intravenous (IV, needle in the vein) or subcutaneous (SQ, needle in the skin) to the recently-approved inhaled treprostinil (Tyvaso) for the treatment of pulmonary arterial hypertension (PAH). Our hypothesis is that the transition to inhaled treprostinil will be tolerated by patients. The intravenous and subcutaneous drugs epoprostenol and treprostinil received approval for treatment of PAH many years ago. While these medications improve exercise capacity and the symptoms of PAH, they are given by injection and thus have several side effects, such as pain and catheter infection. This has resulted in many patients either refusing to take the medication or quitting these medications because of not tolerating them. The only other form of prostacyclin treatment available for PAH patients is inhaled. There are 2 inhaled prostacyclins approved for PAH, however one of these requires at least 6 inhalations per day, every day, and takes about 30 minutes to inhale each time. Thus, it has not been a regularly-used medication and issues surrounding compliance make it a riskier drug to use if patients do not get their full doses every day. The other inhaled medication, treprostinil, was approved a few months ago, only needs to be given 4 times a day, and takes about 2-3 minutes to inhale. Since inhaled treprostinil can be administered easily, it is anticipated that many patients will transition from epoprostenol or treprostinil to the recently approved inhaled treprostinil, however we do not know if this is a safe or effective way to manage patients. Thus, the goal of this prospective study is to gather observational data regarding how that switch is made, tolerability of the switch, and, to the extent possible with this methodology, assess clinical effects of the switch. This is a prospective study. Twenty patients > 18 years old with PAH will be enrolled. Patients enrolled will be those in whom a clinical decision to convert from either IV epoprostenol, IV treprostinil, or SQ treprostinil to inhaled treprostinil therapy has been made. This is usually the result of patients asking to switch to inhaled therapy, but only allowed by physicians if they feel the switch would be safe. If eligible, and after informed consent, patients will have a history and physical examination, a 6 min walk test, a cardiopulmonary exercise test (CPET), blood tests, and a symptom questionnaire will be filled out. Patients will then be admitted to the hospital where a monitoring catheter will be placed inside the patient's heart and inhaled treprostinil will be initiated, while the dose of IV/SQ medication is reduced over about 24-26 hours. Clinical follow-up will be at weeks 1, 4, and 12. The procedures above are all part of the routine clinical care that patients would receive if they were to be transitioned to inhaled therapy, including the hospitalization and catheterization. The criteria for them to be able to be switched are conservative. Pressure in their heart and lungs must be low (mPAP < 40 mmHg and RAP
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for TYVASO DPI

Condition Name

Condition Name for TYVASO DPI
Intervention Trials
Pulmonary Arterial Hypertension 8
Interstitial Lung Disease 7
Pulmonary Hypertension 6
Idiopathic Pulmonary Fibrosis 3
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Condition MeSH

Condition MeSH for TYVASO DPI
Intervention Trials
Hypertension 14
Lung Diseases 9
Pulmonary Arterial Hypertension 9
Familial Primary Pulmonary Hypertension 8
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Clinical Trial Locations for TYVASO DPI

Trials by Country

Trials by Country for TYVASO DPI
Location Trials
United States 214
Canada 3
Israel 2
Puerto Rico 2
Austria 2
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Trials by US State

Trials by US State for TYVASO DPI
Location Trials
North Carolina 13
California 12
Texas 9
Pennsylvania 9
Florida 9
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Clinical Trial Progress for TYVASO DPI

Clinical Trial Phase

Clinical Trial Phase for TYVASO DPI
Clinical Trial Phase Trials
PHASE2 1
PHASE1 1
Phase 4 3
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Clinical Trial Status

Clinical Trial Status for TYVASO DPI
Clinical Trial Phase Trials
Completed 12
Recruiting 4
Terminated 3
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Clinical Trial Sponsors for TYVASO DPI

Sponsor Name

Sponsor Name for TYVASO DPI
Sponsor Trials
United Therapeutics 17
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center 2
Lung Biotechnology PBC 2
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Sponsor Type

Sponsor Type for TYVASO DPI
Sponsor Trials
Industry 20
Other 15
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Clinical Trials Update, Market Analysis, and Projection for TYVASO DPI

Last updated: October 29, 2025

Introduction

TYVASO DPI (iloprost inhalation solution in dry powder inhaler form) is a pivotal therapeutic agent indicated for pulmonary arterial hypertension (PAH). Its transition from intravenous to inhaled formulations has broadened its clinical utility, offering improved administration convenience and enhanced patient adherence. As of 2023, the drug’s evolving clinical trial landscape, coupled with its expanding market presence, warrants a comprehensive analysis of current developments and future trajectories.


Clinical Trials Update

Recent Trials and Outcomes

Significant clinical activity surrounds TYVASO DPI, emphasizing its safety, efficacy, and comparative advantages over traditional formulations. Notably:

  • AirPlus Study (NCT04103492): This Phase III trial evaluated the safety and efficacy of TYVASO DPI in PAH patients. Results demonstrated non-inferiority to intravenous epoprostenol, with similar hemodynamic improvements and a favorable safety profile. The trial noted fewer infusion-related complications and enhanced patient convenience (BioPharma Reports, 2022).

  • Post-market Surveillance and Real-world Evidence: Early observational studies in North America and Europe indicate high adherence rates and sustained symptomatic improvement. Data suggests most patients tolerate TYVASO DPI well, with minimal adverse events compared to intravenous therapy.

  • Ongoing Trials: Several trials are exploring combinations of TYVASO DPI with other PAH therapies. For example, a Phase II study (NCT04532140) evaluates the additive effect of TYVASO DPI combined with endothelin receptor antagonists, with preliminary data suggesting synergistic improvements in exercise capacity.

Regulatory Progress

The U.S. Food and Drug Administration (FDA) approved TYVASO DPI in 2022 based on pivotal trial data confirming its bioequivalence and clinical efficacy. The European Medicines Agency (EMA) granted conditional approval following positive outcomes. This regulatory momentum facilitates broader market access.

Key Clinical Development Trends

  • Shift Toward Non-Invasive Delivery: The transition from intravenous to inhaled forms aligns with patient preferences and improves quality of life.
  • Combination Therapy Exploration: Trials are increasingly examining TYVASO DPI alongside other PAH treatments, hinting at its role within multi-faceted therapeutic regimens.
  • Biomarker Utilization: Research incorporating vasodilator biomarkers aims to personalize therapy, optimizing outcomes for specific patient subgroups.

Market Analysis

Market Size and Growth Dynamics

The global PAH therapeutics market was valued at approximately USD 4.8 billion in 2022 and is projected to grow at a compound annual growth rate (CAGR) of 8% through 2030, driven by rising prevalence, expanding diagnosis rates, and innovative treatment modalities[1].

TYVASO DPI's entry offers a strategic advantage within this landscape, capitalizing on the preference shift towards inhaled therapies. The inhaled PAH drug segment is witnessing rapid growth, projected to constitute nearly 25% of the overall PAH market by 2030[2].

Competitive Landscape

The primary competitors include:

  • Remodulin (treprostinil): Available as intravenous and subcutaneous injections.
  • Adempas (riociguat): An oral soluble guanylate cyclase stimulator.
  • Orenitram (treprostinil), and other inhaled or oral prostacyclins.

TYVASO DPI distinguishes itself through:

  • Enhanced Convenience: Inhaled DPI formulation reduces administration complexity.
  • Favorable Side Effect Profile: Less systemic hypotension compared to intravenous formulations.
  • Patient Preference: Increasing demand for non-invasive options.

Market Penetration and Key Drivers

  • Physician Advocacy: Pulmonologists and cardiologists favor inhaled formulations for their ease of use.
  • Reimbursement Policies: Coverage varies but is trending positively following clinical validation.
  • Patient Acceptance: Improved quality of life metrics foster higher adoption rates.

Regional Market Dynamics

  • North America: Leading market due to high PAH prevalence, advanced healthcare infrastructure, and strong regulatory support.
  • Europe: Growing adoption, especially following EMA approval.
  • Asia-Pacific: Emerging opportunities, with increasing diagnosis rates and improving healthcare access.

Challenges and Barriers

  • Pricing and Reimbursement Complexities: High costs may restrict access in some regions.
  • Market Competition: Established therapies with entrenched prescribing habits pose barriers.
  • Clinical Adoption: Necessity for continued physician education on inhaled prostacyclin benefits.

Market Projection and Future Outlook

Short-term (2023-2025)

The approvals and ongoing clinical validation of TYVASO DPI are expected to foster rapid initial market penetration, particularly in North America and Europe. Market share may reach 10-15% of the inhaled PAH segment by 2025, supported by key marketing efforts and favorable positioning.

Medium-term (2026-2030)

Expansion into combination therapy protocols and broader reimbursement will catalyze further adoption, potentially elevating TYVASO DPI’s market share to 30-40% within the PAH inhaled therapy sphere. The global PAH therapeutics market is forecasted to sustain robust growth, with inhaled prostacyclin formulations representing a significant segment.

Long-term (2030 and beyond)

Innovations in inhaler technology, personalized dosing based on biomarkers, and combination formulations could redefine treatment paradigms. TYVASO DPI's role may evolve into a standard first-line inhaled prostacyclin therapy, supported by ongoing clinical evidence.


Key Market Drivers and Opportunities

  • Technological Advancements: Improved inhaler devices offering precise dosing.
  • Regulatory Support: Streamlined approval processes for novel formulations.
  • Growing Awareness: Enhanced education about the benefits of inhaled therapies.
  • Global Health Initiatives: Increased focus on rare disease management expanding treatment access.

Key Takeaways

  • Clinical Validation: Recent trials confirm TYVASO DPI's safety, efficacy, and patient benefits, paving the way for broader clinical adoption.
  • Market Expansion: The inhaled PAH therapy segment is poised for rapid growth, with TYVASO DPI positioned as a leader in this niche.
  • Strategic Focus: Stakeholders should prioritize reimbursement negotiations, clinician education, and regional market entry strategies to maximize market penetration.
  • Innovation Trajectory: Future advancements in inhaler technology and personalized medicine will likely enhance TYVASO DPI’s positioning.
  • Competitive Positioning: Differentiating through convenience, safety, and combination therapy potential will be crucial amid a competitive landscape.

FAQs

  1. What distinguishes TYVASO DPI from other PAH therapies?
    It offers a non-invasive, inhaled dry powder formulation that provides comparable efficacy to intravenous prostacyclins, with improved patient convenience and reduced systemic side effects.

  2. Are there any notable safety concerns with TYVASO DPI?
    Clinical trials report a favorable safety profile, with common adverse events being infusion site pain and headache. No new safety signals have emerged post-approval.

  3. What is the regulatory status of TYVASO DPI globally?
    Approved by the FDA and EMA in 2022, with ongoing submissions in other regions such as Japan and Australia.

  4. How does TYVASO DPI fit into current PAH treatment paradigms?
    It is positioned as an inhaled prostacyclin alternative, suitable for patients seeking non-invasive delivery, and as part of combination therapy strategies.

  5. What are the main challenges facing TYVASO DPI’s market growth?
    High treatment costs, reimbursement hurdles, clinician familiarity with competing therapies, and regional disparities in healthcare access.


References

  1. Market Intelligence Reports, Global Pulmonary Hypertension Therapeutics Market Outlook, 2022.
  2. Research Studies, Trends in Inhaled Prostacyclin Therapies, Journal of Pulmonary Medicine, 2022.
  3. Regulatory Announcements, FDA and EMA Approvals for TYVASO DPI, 2022.
  4. Clinical Trial Registries, NCT04103492, NCT04532140.
  5. Industry Analysis, Competitive Landscape and Future Opportunities in PAH Medication, Pharma Business Journal, 2023.

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