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ARO-ALK7

Phase 1

Obesity | Small molecule | Metabolic |Arrowhead Pharmaceuticals, Inc.|Last Updated: Apr 13, 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 Trials1
Total Enrollment138
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06937203A First-In-Human Study of ARO-ALK7 in Adults With Obesity With and Without Type 2 Diabetes MellitusPHASE1 RECRUITING 138May 9, 2025Oct 1, 2026Apr 13, 20268 Australia, New Zealand
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Study Endpoints
Primary Endpoints
Number of Participants with Treatment-Emergent Adverse Events (TEAEs)
Up to Day 253 End of Study (EOS)
Secondary Endpoints
Pharmacokinetics (PK) of ARO-ALK7 (Part 1 Only): Maximum Observed Plasma Concentration (Cmax)
Through 48 hours post-dose
PK of ARO-ALK7 (Part 1 Only): Time to Maximum Observed Plasma Concentration (Tmax)
Through 48 hours post-dose
PK of ARO-ALK7 (Part 1 Only): Area Under the Plasma Concentration Versus Time Curve from Zero to 24 Hours (AUC0-24)
Through 48 hours post-dose
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Part 1 and Part 2 (optional cohort): ARO-ALK7EXPERIMENTALARO-ALK7 in single (Day 1) or multiple (Days 1 and 85) ascending doses
Part 1 and Part 2 (optional cohort): PlaceboPLACEBO_COMPARATORPlacebo in single (Day 1) or multiple (Days 1 and 85) matching doses
Part:2: ARO-ALK7 + TirzepatideEXPERIMENTALARO-ALK7 at ascending doses on Days 1 and 85 plus weekly doses of tirzepatide initiated at D15 through D253
Part 2: Placebo + TirzepatidePLACEBO_COMPARATORPlacebo dose on Days 1 and 85 plus weekly doses of tirzepatide initiated at D15 through D253
Interventions
NameTypeDescription
ARO-ALK7DRUGSC injection
PlaceboDRUGcalculated volume to match active treatment by SC injection
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Eligibility Criteria
Age Range18 Years — 65 Years
SexALL
Healthy VolunteersNo
Study Sites8

Inclusion Criteria: * Obesity, defined as BMI between 30-50 kg/m2, inclusive, with weight at Screening not to exceed 159 kg (350 lbs) * At least one self-reported, unsuccessful attempt at weight loss with lifestyle modification * No abnormal finding of clinical relevance at Screening that could adv...

Countries:AustraliaNew Zealand
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Recent Changes (Last 90 Days)
MEDIUMMay 26, 2026NCT06937203Enrollment: 126 → 138
LOWMay 24, 2026NCT06937203studyFirstPostDate: changed