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L606

Phase 3

Pulmonary Arterial Hypertension | Small molecule | Cardiovascular |Liquidia Corporation|Last Updated: Jun 29, 2026

Success Probability
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Market & Valuation
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Trial Design
UNCONTROLLED
Total Trials1
Total Enrollment28
FDA Designations
No designations recorded
Clinical trial landscape

L606 · 2 trials · 3 indications

Phase 3 2
NCT07285655A Phase 3 Study to Evaluate the Safety and Efficacy L606 in Participants With PH-ILDPulmonary Hypertension Due to Lung Disease (Disorder)
RECRUITING344 Analytics
NCT04691154A Phase 3 Study to Evaluate the Safety and Tolerability of L606 in Subjects With PAH or PH-ILDPulmonary Arterial Hypertension
ACTIVE NOT_RECRUITING28 Analytics
PHASE3RECRUITING
A Phase 3 Study to Evaluate the Safety and Efficacy L606 in Participants With PH-ILD
Pulmonary Hypertension Due to Lung Disease (Disorder)Unlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
A Phase 3 Study to Evaluate the Safety and Tolerability of L606 in Subjects With PAH or PH-ILD
Pulmonary Arterial HypertensionUnlock trial analytics
Study Endpoints
Primary Endpoints
Change from baseline in 6-minute walk distance (6MWD) as evaluated by the 6-minute walk test (6MWT)
16 weeks
Safety/Tolerability assessed by incidence of treatment-emergent AEs/SAEs
2 weeks

(MSP for Cohort A): Proportion of patients with PAH or PH-ILD on a stable Tyvaso dose who would develop treatment-emergent AEs/SAEs after switching to L606 dosing for up to 2 weeks during MSP.

Safety/Tolerability assessed by incidence of treatment-emergent AEs/SAEs (long-term)
48 weeks

(OEP for Cohorts A and B): Proportion of subjects with PAH or PH-ILD, choosing to continue twice daily L606 dosing for up to 48 weeks, who would develop treatment emergent AEs/SAEs up to 48 hours after the last dose.

Secondary Endpoints
Time to first occurrence of: -Death -Hospitalization due to a cardio-pulmonary indication related to underlying disease -Lung transplant -Decrease in 6MWD > 15% from Baseline related to disease under study at 2 consecutive visits >1 week apart
24 weeks
Change from baseline in 6-minute walk distance (6MWD) as evaluated by the 6-minute walk test (6MWT)
16 weeks
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
L606 (in combination with nebulizer)EXPERIMENTAL -
Placebo (in combination with nebulizer)PLACEBO_COMPARATOR -
L606EXPERIMENTAL -
Interventions
NameTypeDescription
L606DRUGL606 is a liposomal version of treprostinil intended for delivery via oral inhalation using a study issued nebulizer.
PlaceboDRUGPlacebo will match L606 but contain no treprostinil.
L606 inhalation suspensionCOMBINATION_PRODUCTL606 inhalation suspension
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Eligibility Criteria
Age Range18 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites16

Inclusion Criteria: * Participant is between 18 years to 80 years old. * Has a confirmed diagnosis of ILD based on High Resolution Computed Tomography (HRCT) chest imaging. * Evidence of PH as demonstrated from Right Heart Catheterization (RHC) with the following hemodynamic parameters: * Pulmonary...

Countries:United StatesAustriaBelgiumFranceGermanyLatviaPortugalSpainUnited Kingdom
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Recent Changes (Last 90 Days)
LOWJun 29, 2026NCT07285655lastUpdatePostDate: changed
LOWJun 29, 2026NCT07285655lastUpdatePostDate: changed
LOWJun 18, 2026NCT07285655lastUpdatePostDate: changed
LOWJun 18, 2026NCT07285655lastUpdatePostDate: changed
LOWJun 18, 2026NCT07285655lastUpdatePostDate: changed
LOWJun 18, 2026NCT07285655lastUpdatePostDate: changed
LOWJun 2, 2026NCT07285655startDate: changed
LOWJun 2, 2026NCT07285655startDate: changed
LOWJun 2, 2026NCT07285655startDate: changed
LOWMay 29, 2026NCT07285655lastUpdatePostDate: changed
LOWMay 29, 2026NCT07285655lastUpdatePostDate: changed
LOWMay 26, 2026NCT07285655Status: NOT_YET_RECRUITING → RECRUITING
LOWMay 26, 2026NCT04691154primaryCompletionDate: changed
LOWMay 24, 2026NCT07285655studyFirstPostDate: changed
LOWMay 24, 2026NCT04691154studyFirstPostDate: changed