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ARCT-032

Phase 2

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

Target and mechanism

Molecular targetCFTR
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials2
Total Enrollment72

FDA Designations

No designations recorded

Clinical trial landscape

ARCT-032 · 2 trials · 2 indications

Phase 2 1Phase 1 1
NCT06747858Safety, Tolerability and Efficacy Study of ARCT-032 in People With Cystic FibrosisCystic Fibrosis
RECRUITING33 Analytics
PHASE2RECRUITING
Safety, Tolerability and Efficacy Study of ARCT-032 in People With Cystic Fibrosis
Cystic FibrosisUnlock trial analytics

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 to 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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Frequently asked questions about ARCT-032

What is ARCT-032 used for in Cystic Fibrosis?

ARCT-032 is an investigational small molecule being developed for the treatment of Cystic Fibrosis, a genetic condition caused by CFTR gene mutations. It is currently in Phase 2 clinical development and is not yet approved by regulatory authorities.

What does ARCT-032 target?

ARCT-032 targets the CFTR protein, which is defective in people with Cystic Fibrosis due to mutations in the CFTR gene. By modulating CFTR function, the drug aims to address the underlying cause of the disease.

Who makes ARCT-032?

ARCT-032 is being developed by Arcturus Therapeutics Holdings Inc., a biopharmaceutical company listed on the stock exchange under the ticker symbol ARCT.

What phase is ARCT-032 in?

ARCT-032 is currently in Phase 2 clinical development for Cystic Fibrosis. It is an investigational drug, meaning it has not been approved by the FDA or other regulatory agencies and is still undergoing clinical trials to assess its safety and efficacy.

What clinical trials is ARCT-032 in?

ARCT-032 has two clinical trials. The active Phase 2 trial, NCT06747858, is recruiting 33 participants with Cystic Fibrosis in the United States. A completed Phase 1 trial, NCT05712538, enrolled 39 healthy adults and adults with Cystic Fibrosis in New Zealand.

Is ARCT-032 the same as other CFTR modulators?

ARCT-032 is a distinct investigational small molecule targeting CFTR. It is not the same as other CFTR modulators, as it is being developed specifically by Arcturus Therapeutics for Cystic Fibrosis and is in early-stage clinical trials.