A Healthy Volunteer Study Evaluating the the Safety, Tolerability, and Pharmacokinetics of RT234
NCT ID: NCT05567367
Last Updated: 2025-09-22
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
PHASE1
31 participants
INTERVENTIONAL
2018-07-31
2019-12-04
Brief Summary
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This study is also known as Vardenafil Inhaled for Pulmonary Arterial Hypertension PRN Phase 1 (VIPAH-PRN 1) study
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
NONE
Study Groups
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RT234 0.2 mg, Single Ascending Dose (SAD)
Part 1, SAD Cohort 1A
Drug: RT234 - vardenafil inhalation powder; Device: RS01 dry powder inhaler (RS01 DPI)
RT234 is a drug/device combination product composed of vardenafil hydrochloride as the drug constituent and will utilize RS01 DPI device.
RT234 0.6 mg followed by oral vardenafil 20mg on day 3, SAD
Part 1, SAD Cohort 2A1
Drug: RT234 - vardenafil inhalation powder; Device: RS01 dry powder inhaler (RS01 DPI)
RT234 is a drug/device combination product composed of vardenafil hydrochloride as the drug constituent and will utilize RS01 DPI device.
Vardenafil Oral Tablet
20 mg oral vardenafil tablet.
Oral vardenafil 20mg followed by RT234 0.6 mg on day 3, SAD
Part 1, SAD Cohort 2A2
Drug: RT234 - vardenafil inhalation powder; Device: RS01 dry powder inhaler (RS01 DPI)
RT234 is a drug/device combination product composed of vardenafil hydrochloride as the drug constituent and will utilize RS01 DPI device.
Vardenafil Oral Tablet
20 mg oral vardenafil tablet.
RT234 1.2 mg, SAD
Part 1, SAD Cohort 3A
Drug: RT234 - vardenafil inhalation powder; Device: RS01 dry powder inhaler (RS01 DPI)
RT234 is a drug/device combination product composed of vardenafil hydrochloride as the drug constituent and will utilize RS01 DPI device.
RT234 2.4 mg, SAD
Part 1, SAD Cohort 4A
Drug: RT234 - vardenafil inhalation powder; Device: RS01 dry powder inhaler (RS01 DPI)
RT234 is a drug/device combination product composed of vardenafil hydrochloride as the drug constituent and will utilize RS01 DPI device.
RT234 2.4 mg, Multiple Ascending Dose (MAD)
Part 2, MAD Cohort 1B
Drug: RT234 - vardenafil inhalation powder; Device: RS01 dry powder inhaler (RS01 DPI)
RT234 is a drug/device combination product composed of vardenafil hydrochloride as the drug constituent and will utilize RS01 DPI device.
Interventions
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Drug: RT234 - vardenafil inhalation powder; Device: RS01 dry powder inhaler (RS01 DPI)
RT234 is a drug/device combination product composed of vardenafil hydrochloride as the drug constituent and will utilize RS01 DPI device.
Vardenafil Oral Tablet
20 mg oral vardenafil tablet.
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
2. Normal heart, lung, kidney, and liver function based on physical examination
3. Systolic blood pressure of 100-145 mmHg, diastolic blood pressure of 50-90 mmHg, and a resting heart rate of 40-100 bpm at Screening
4. A body mass index (BMI) of ≤18 to ≥30 kg/m2 at Screening
5. Must be a non-smoker or ex-smoker with less than a 5-pack year history of smoking (including the use of electronic cigarettes) and have ceased smoking ≥1 year prior to Screening; or a social smoker (defined as less than 10 cigarettes in the previous 12 months)
Exclusion Criteria
2. Abnormal orthostatic vital signs (at screening) defined as a decrease of ≥20 mmHg in systolic blood pressure and/or a decrease of ≥10 mmHg in diastolic blood pressure and/or \>25 bpm increase in heart rate within 3 minutes of standing, or with symptoms of light-headedness, dizziness, or fainting upon standing.
3. History of hypotension including fainting, syncope, orthostatic hypotension, and/or vasovagal reactions
4. History of retinitis pigmentosa
5. Vision loss due to non-arteritic anterior ischemic optic neuropathy (NAION) or other optic perfusion impairment
6. History of priapism or anatomical deformation of the penis
7. History of sudden sensorineural hearing loss (SSHL), need for hearing aids, and/or other documented hearing loss
8. A corrected QT interval using Fridericia's formula (QTcF) \>450 msec
9. Has evidence of significant obstructive lung disease on spirometry. Subjects with any of the following criteria will be excluded:
1. FEV1 \<60% (predicted) (pre-bronchodilators); or
2. FEV1/FVC \<65% (pre-bronchodilators)
18 Years
45 Years
ALL
Yes
Sponsors
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Respira Therapeutics, Inc.
INDUSTRY
Responsible Party
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Principal Investigators
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Donna Jarlenski, MS
Role: STUDY_DIRECTOR
Respira Therapeutics
Locations
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Nucleus Network, Burnet Institute
Prahran, Victoria, Australia
Countries
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References
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Eldon MA, Parsley EL, Maurer M, Tarara TE, Okikawa J, Weers JG. Safety, Tolerability, and Pharmacokinetics of RT234 (Vardenafil Inhalation Powder): A First-in-Human, Ascending Single- and Multiple-Dose Study in Healthy Subjects. J Aerosol Med Pulm Drug Deliv. 2021 Aug;34(4):251-261. doi: 10.1089/jamp.2020.1651. Epub 2020 Dec 15.
Other Identifiers
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ACTRN12618001077257
Identifier Type: REGISTRY
Identifier Source: secondary_id
RT234-CL101
Identifier Type: -
Identifier Source: org_study_id
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