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ARCT-032

Phase 2

Cystic Fibrosis | Small molecule | Respiratory |Arcturus Therapeutics Holdings Inc.|Last Updated: May 8, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials2
Total Enrollment72
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06747858Safety, Tolerability and Efficacy Study of ARCT-032 in People With Cystic FibrosisPHASE2 RECRUITING 33Dec 12, 2024Jun 1, 2027May 8, 202613 United States
NCT05712538Safety, Tolerability, and Pharmacokinetics of ARCT-032 in Healthy Adult Subjects and Adults With Cystic Fibrosis.PHASE1 COMPLETED 39Feb 15, 2023Jul 29, 2024Nov 13, 20241 New Zealand
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Study Endpoints
Primary Endpoints
Incidence, severity and dose relationship of adverse events
Cohorts 1-3: 16 weeks and Cohort 4: 24 weeks

Safety and tolerability of ARCT-032 assess by determining incidence, severity and dose-relationship of AEs by dose level

Incidence, severity and dose-relationship of AEs
4 weeks

Safety and tolerability of ARCT-032 assessed by determining the incidence, severity and dose-relationship of AEs by dose

Secondary Endpoints
Pharmacokinetics - Plasma Concentration
Up to 6 weeks
Pharmacodynamics--Lung Function
4 weeks
Pharmacodynamics--Cystic Fibrosis Quality of Life Questionnaire-Revised (CFQ-R)
4 weeks
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Cohort 1EXPERIMENTALDose Level A of ARCT-032, inhaled daily for 28 days
Cohort 2EXPERIMENTALDose Level B of ARCT-032, inhaled daily for 28 days
Cohort 3EXPERIMENTALDose Level C of ARCT-032, inhaled daily for 28 days
Cohort 4EXPERIMENTALDose level B or C of ARCT-032, inhaled once daily for 12 weeks
ARCT-032, Healthy AdultsEXPERIMENTALAscending single doses of ARCT-032 administered to healthy adults via nebulizer
Placebo, Healthy AdultsPLACEBO_COMPARATORSingle doses of 0.9% Saline administered to healthy adults via nebulizer
ARCT-032,. Adults with Cystic FibrosisEXPERIMENTALTwo doses of ARCT-032 administered to adults with Cystic Fibrosis via nebulizer
Interventions
NameTypeDescription
ARCT-032BIOLOGICALCFTR mRNA formulated in lipid nanoparticles
PlaceboOTHERNormal saline
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites13

Key Inclusion Criteria: 1. Confirmed diagnosis of Cystic Fibrosis 2. Not eligible for CFTR modulator therapy or not taking CFTR modulators for at least 60 days prior to dosing (e.g. due to intolerance, poor response, or lack of access to modulators) 3. FEV1 between 40% to 100% (cohorts 1-3) and 45%...

Countries:United StatesNew Zealand
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Recent Changes (Last 90 Days)
MEDIUMMay 26, 2026NCT06747858Enrollment: 12 → 33
LOWMay 24, 2026NCT06747858studyFirstPostDate: changed