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FX201

Phase 1

Osteoarthritis, Knee | Monoclonal antibody | Musculoskeletal |Pacira BioSciences, Inc.|Last Updated: Mar 17, 2025

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
CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment72
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04119687Study to Evaluate the Safety and Tolerability of FX201 in Patients with Osteoarthritis of the KneePHASE1 ACTIVE NOT_RECRUITING 72Mar 2, 2020Nov 28, 2026Mar 17, 20256 United States
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Study Endpoints
Primary Endpoints
Primary Outcome Measure: Incidence of treatment emergent adverse events after a single intra-articular (IA) injection of FX201 (safety and tolerability)
Baseline to Week 104

Incidence of treatment emergent adverse events after a single intra-articular (IA) injection of FX201

Secondary Endpoints
Secondary Outcome Measure: Characterization of the systemic biodistribution of FX201 as seen through the percentage of patients positive for FX201 at Baseline, Day 1, Day 2, Week 1, Week 2, Week 3, and Week 4
Baseline, Day 1, Day 2, Week 1, Week 2, Week 3, Week 4
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Low Dose FX201EXPERIMENTALSingle low dose FX201 injection
Mid Dose FX201EXPERIMENTALSingle mid dose FX201 injection
High Dose FX201EXPERIMENTALSingle high dose FX201 injection
Interventions
NameTypeDescription
FX201BIOLOGICALFX201, humantakinogene hadenovec, is a novel interleukin-1 receptor antagonist (IL-1Ra) gene therapy for IA administration that is being developed for the treatment of patients with OAK.
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Eligibility Criteria
Age Range30 Years — 80 Years
SexALL
Healthy VolunteersNo
Study Sites6

Inclusion Criteria: * Written consent to participate in the study * Male or female 30 to 80 years of age, inclusive, on the day of enrollment (Day 1) * Body mass index (BMI) ≤ 40 kilograms per meters squared (kg/m2) * Clinical diagnosis of OA of the knee on the American College of Rheumatology crit...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT04119687primaryCompletionDate: changed
LOWMay 24, 2026NCT04119687studyFirstPostDate: changed