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AskBio009

Phase 1

Hemophilia B | Monoclonal antibody | Hematology |Takeda Pharmaceutical Company Limited|Last Updated: Mar 20, 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
UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment30
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT01687608Open-Label Single Ascending Dose of Adeno-associated Virus Serotype 8 Factor IX Gene Therapy in Adults With Hemophilia BPHASE1 ACTIVE NOT_RECRUITING 30Feb 11, 2013Jan 17, 2030Mar 20, 202615 United States
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Study Endpoints
Primary Endpoints
Number of patients experiencing treatment-related adverse events by dose group
Infusion to Week 3 and Infusion to end of study
Change from baseline in clinical laboratory evaluations
Change from baseline at week 3 and change from baseline at the end of study
Secondary Endpoints
Changes from Baseline in FIX activity levels, FIX protein levels, and Bleeding Episode Severity & Frequency
At multiple timepoints from pre-dose through up to 5 years post-dose
Immune Response to AskBio009
At multiple timepoints from pre-dose through up to 5 years post-dose
Detection of AskBio009 genomes in blood, saliva, urine, stool, and semen
At multiple timepoints from pre-dose through up to 1 years post-dose
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
AskBio009 Dose EscalationEXPERIMENTALSingle Dose of a Self-Complementing Optimized Adeno-associated Virus (AAV) Serotype 8 Factor IX Gene Therapy
Interventions
NameTypeDescription
AskBio009BIOLOGICALSingle dose IV injection
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Eligibility Criteria
Age Range18 Years — 75 Years
SexMALE
Healthy VolunteersNo
Study Sites15

Inclusion Criteria: * Males age 18-75 years, inclusive * Established hemophilia B with ≥3 hemorrhages per year requiring treatment with exogenous FIX OR use of FIX prophylaxis because of history of frequent bleeding episodes * Plasma FIX activity ≤2% (\<1% for first cohort; then per protocol) * Neg...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT01687608primaryCompletionDate: changed
LOWMay 24, 2026NCT01687608studyFirstPostDate: changed