A Study to Assess the Efficacy and Safety of Treprostinil Palmitil Inhalation Powder (TPIP) in Participants With Progressive Pulmonary Fibrosis (PPF)

NCT07805785 | Not Yet Recruiting Phase 3 DMC FDA Drug

• 2 other identifiers: INS1009-3312026-525924-37-00
• Study Type: interventional
• Target: 800
• Locations: 0 countries
• Sites: N/A

Brief Summary

The primary objective of this study is to evaluate the effect of 52 weeks of once daily treatment with TPIP compared with placebo on lung function in adults with PPF.

Conditions

Progressive Pulmonary Fibrosis; Interstitial Lung Disease

Outcome Measures

Primary Outcomes (1)

• Change From Baseline in Absolute Forced Vital Capacity (FVC) at Week 52

  Baseline, Week 52

Secondary Outcomes (7)

• Time to First Clinical Worsening Event

  Up to 104 weeks

• Time to First Acute Exacerbation of Interstitial Lung Disease (ILD)

  Up to 104 weeks

• Absolute Change From Baseline in Diffusing Capacity of the Lungs for Carbon Monoxide (DLCO) % Predicted Corrected for Hemoglobin at Week 52

  Baseline, Week 52

• Time to Death

  Up to 104 weeks

• Change in Living With Pulmonary Fibrosis (L-PF) Total Symptom Domain Score From Baseline at Week 52

  Baseline, Week 52

Study Arms (2)

Treprostinil Palmitil Inhalation Powder (TPIP)

EXPERIMENTAL

Participants will receive TPIP, once daily (QD), at a starting dose of 80 micrograms (μg) to the maximum tolerated dose (up to 1280 μg) for up to 104 weeks.

Drug: Treprostinil Palmitil Inhalation Powder

Placebo

PLACEBO COMPARATOR

Participants will receive a TPIP-matching placebo, QD for up to 104 weeks.

Drug: Placebo

Interventions

Treprostinil Palmitil Inhalation Powder DRUG

Oral inhalation using a capsule-based dry powder inhaler device.

Also known as: INS1009

Treprostinil Palmitil Inhalation Powder (TPIP)

Placebo DRUG

Oral inhalation using a capsule-based dry powder inhaler device.

Placebo

Eligibility Criteria

• Age: 18 Years - 85 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Radiologic evidence of pulmonary fibrosis of \>10% extent on high-resolution computed tomography (HRCT) in the previous 12 months.
• Diagnosis of interstitial lung disease (ILD) (other than idiopathic pulmonary fibrosis \[IPF\]) that fulfills at least 1 of the following criteria for progression within 24 months of screening despite standard treatment of ILD, as assessed by the Investigator:
• Clinically significant decline in % predicted Forced Vital Capacity (FVC) based on ≥10% relative decline
• Decline in % predicted FVC based on ≥5% to \<10% relative decline combined with worsening of respiratory symptoms
• Decline in % predicted FVC based on ≥5% to \<10% relative decline combined with an increasing extent of fibrotic changes on chest imaging
• Worsening of respiratory symptoms and increasing extent of fibrotic changes on chest imaging
• Forced Vital Capacity ≥45% predicted at Screening.
• Diffusing Capacity of the Lungs for Carbon Monoxide (DLCO) ≥25% of predicted normal corrected for hemoglobin at Screening.
• Participants may be either:
• On stable therapy (defined as no dose changes in the prior 12 weeks) with an approved antifibrotic agent (eg, nintedanib or nerandomilast) for at least 12 weeks prior to Screening and during the screening period and are planning to stay on this background treatment throughout the study. Combination therapy with more than 1 approved antifibrotic agent is not allowed. Or
• Not on treatment with an approved antifibrotic agent (eg, nintedanib or nerandomilast) for at least 8 weeks prior to Screening and during the screening period (ie, either antifibrotic-treatment-naïve or previously discontinued) and do not plan to start or restart antifibrotic treatment during the study.
• If treated with rituximab, must be on it for at least 6 months before Screening and in the Investigator's clinical opinion must be refractory to the current regimen. If treated with other immunosuppressive agents (eg, mycophenolate, methotrexate, azathioprine, oral corticosteroids), need to be on treatment for at least 12 weeks before Screening and in the investigator's clinical opinion must be refractory to the current regimen.

You may not qualify if:

• Prebronchodilator Forced Expiratory Volume in 1 second (FEV1)/Forced Vital Capacity (FVC) \<0.7 and less than the age-adjusted lower limit of normal at Screening.
• Diagnosis of idiopathic pulmonary fibrosis (IPF).
• Diagnosis of combined pulmonary fibrosis and emphysema.
• Extent of emphysema greater than fibrosis on HRCT within 1 year prior to Screening or during the screening period confirmed by central overread.
• Acute ILD exacerbation within 90 days prior to Screening or during the screening period (investigator-determined). If hospitalized for a respiratory indication, participants must have been discharged more than 90 days prior to Screening to be eligible.
• Acute respiratory infection (eg, COVID-19, influenza, pneumonia) within 30 days prior to Screening or during the Screening period.
• Acute pulmonary embolism within 90 days prior to Screening.
• Prior TPIP exposure or participation in other clinical trials involving the study drug, TPIP.
• Known hypersensitivity or contraindication to treprostinil or TPIP or TPIP formulation excipients (eg, mannitol, leucine).
• History of clinically significant pulmonary hypertension (PH) (ie, pulmonary hypertension requiring medical treatment) or the participant has received any PH-approved therapy, including prostacyclin analogs (eg, beraprost, epoprostenol, iloprost, or treprostinil; except for acute vasoreactivity testing), prostacyclin receptor (IP receptor) agonists (eg, selexipag), endothelin receptor antagonists (eg, ambrisentan, bosentan, or macitentan), activin signaling inhibitors (eg, sotatercept), phosphodiesterase type 5 inhibitors (PDE5-Is; eg, sildenafil, tadalafil), or soluble guanylate cyclase stimulators (eg, riociguat) within 60 days prior to Screening or during the screening period. As needed use of a PDE5-I for erectile dysfunction is permitted, provided that no doses are taken within 48 hours prior to any study-related efficacy assessments.
• Any physical limitation that would impair the participant's use of the inhaler device or ability to participate in spirometry and/or DLCO assessment.

Sponsors & Collaborators

• Insmed Incorporated: lead

MeSH Terms

Conditions

Lung Diseases, Interstitial

Condition Hierarchy (Ancestors)

Lung Diseases; Respiratory Tract Diseases

Study Officials

• Study Director

  Insmed Incorporated

  STUDY DIRECTOR

Central Study Contacts

Insmed Medical Information

CONTACT

18444467633; medicalinformation@insmed.com

Study Design

• Study Type: interventional
• Phase: phase 3
• Allocation: RANDOMIZED
• Masking: QUADRUPLE
• Who Masked: PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: September 1, 2026
• First Posted: September 4, 2026
• Study Start (Estimated): December 1, 2026
• Primary Completion (Estimated): August 31, 2030
• Study Completion (Estimated): August 31, 2030
• Last Updated: September 4, 2026

Record last verified: 2026-09

Data Sharing

• IPD Sharing: Will not share