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Phenoptin

Phase 2

Tetrahydrobiopterin Deficiencies | Small molecule | Other |BioMarin Pharmaceutical Inc.|Last Updated: Sep 25, 2020

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
UNCONTROLLEDBiomarker
Total Trials1
Total Enrollment12
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00355264Safety and Efficacy Study of Phenoptin in Subjects With Hyperphenylalaninemia Due to BH4 DeficiencyPHASE2 COMPLETED 12Aug 1, 2006Jun 1, 2009Sep 25, 202010 United States, Germany
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Study Endpoints
Primary Endpoints
Blood Phenylalanine(Phe) Levels Measured at Specified Timepoints
At Baseline, Week 4 through Extension Week 130

Baseline blood phenylalanine(Phe) value is the latest measurement taken prior to initiation of Phenoptin treatment. The ideal range for blood Phe levels is approximately 120-360 µmol/L.

Percentage of Subjects With Blood Phenylalanine (Last Observation Carried Forward) < 360 μmol/L
At Baseline, Week 4 through Extension Week 130

Baseline blood phenylalanine(Phe) value is the latest measurement taken prior to initiation of Phenoptin treatment. The objective of this outcome was to compare to Phe levels achieved using previous treatment regimens.

Secondary Endpoints
Subjects Experiencing Adverse Events(AEs)
Up to 35 Months
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Single Arm on Active DrugEXPERIMENTAL5mg/kg/day orally, dose may be adjusted to between 5-20 mg/kg/day by investigator at week 6 to control blood Phe levels Outcomes were also evaluated by the subject's type of BH4 deficiency either defects in the genes encoding the enzymes involved in biosynthesis or defects in the genes encoding the enzymes involved in recycling.
Interventions
NameTypeDescription
PhenoptinDRUG5mg/kg/day orally, dose may be adjusted to between 5-20 mg/kg/day by investigator at week 6 to control blood Phe levels
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Eligibility Criteria
SexALL
Healthy VolunteersNo
Study Sites10

Inclusion Criteria: * Documented history of blood Phe level \> 180 µmol/L on at least one occasion * Established diagnosis of hyperphenylalaninemia (HPA) due to primary BH4 deficiency with a documented defect in biopterin metabolism with blood or urine tests * Willing and able to provide written in...

Countries:United StatesGermany
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