Recent Updates
Recently added Catalysts

SION-451

Phase 1

Cystic Fibrosis (CF) | Small molecule | Respiratory |Sionna Therapeutics, Inc.|Last Updated: Sep 3, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
Premium
Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
Premium
Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDBiomarker
Total Trials1
Total Enrollment144
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07035990Safety, Tolerability, and Pharmacokinetics of Multiple Dose Combinations of SION-451 and Complementary Modulators SION-2222 and SION-109 in Healthy Participants.PHASE1 RECRUITING 144Jul 23, 2025Jun 1, 2026Sep 3, 20252 Australia
Unlock Drug Trial Details
Study Endpoints
Primary Endpoints
To evaluate the incidence of treatment emergent adverse events [Safety and Tolerability] of SION-451 and SION-109 when administered in combination to healthy participants
From Day 1 through day 21

Adverse reactions to the study drug combination SION-451 and SION-109 will be measured.

To evaluate the incidence of treatment emergent adverse events [Safety and Tolerability] of SION-451 and SION-2222 when administered in combination to healthy participants
From Day 1 through day 21

Adverse events to the study drug combination SION-451 and SION-2222 will be measured

Secondary Endpoints
Cmax of SION-451 and SION-2222 in plasma when administered in combination to healthy participants
From Day 1 through day 17
Tmax of SION-451 and SION-2222 in plasma when administered in combination to healthy participants
From Day 1 through day 17
AUC of SION-451 and SION-2222 in plasma when administered in combination to healthy participants
From Day 1 through day 17
Unlock Study Endpoints
Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
SION-451 + SION-2222EXPERIMENTALAll participants who receive SION-451 in combination with SION-2222
Placebo matched to SION-451 and SION-2222PLACEBO_COMPARATOR -
SION 451 + SION 109EXPERIMENTALAll participants who receive SION-451 in combination with SION-109
Placebo matched to SION-451 and SION-109PLACEBO_COMPARATOR -
Interventions
NameTypeDescription
SION-451DRUG* Pharmaceutical form: tablet * Route of administration: oral
SION-2222DRUG* Pharmaceutical form: capsule * Route of administration: oral
SION-109DRUG* Pharmaceutical form: tablet * Route of administration: oral
Placebo SION-451DRUGPlacebo matched to SION-451
Placebo SION-2222DRUGPlacebo matched to SION-2222
Placebo SION-109DRUGPlacebo matched to SION-109
Unlock Study Design Details
Eligibility Criteria
Age Range18 Years — 55 Years
SexALL
Healthy VolunteersYes
Study Sites2

Inclusion Criteria: 1. Healthy male or female adult participants aged 18 to 55 years, inclusive, at the time of consent. 2. Weight of at least 45 kg and body mass index between 18.0 and 32.0 kg/m2, inclusive, at Screening. 3. Participant is willing to abstain from alcohol, caffeine, smoking and nic...

Countries:Australia
Unlock Eligibility Criteria
Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT07035990primaryCompletionDate: changed
LOWMay 24, 2026NCT07035990studyFirstPostDate: changed