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PTI-125

Phase 1

Alzheimer Disease, Early Onset | Small molecule | Neurology |Cassava Sciences, Inc.|Last Updated: May 10, 2021

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 Enrollment24
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03784300A Safety Study of PTI-125 in Healthy VolunteersPHASE1 COMPLETED 24Aug 18, 2017Mar 27, 2018May 10, 20211 United States
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Study Endpoints
Primary Endpoints
Maximum Plasma Concentration (Cmax)
Blood samples will be drawn on Day 1 after dosing at 20, 40, and 60 minutes and at 2, 3, 4, 6, 8, 12, 24, 36, 48 and 72 hours.

The peak drug concentration will be obtained directly from the data without interpolation.

Time to Maximum Plasma Concentration (Tmax) (Tmax)
Blood samples will be drawn on Day 1 after dosing at 20, 40, and 60 minutes and at 2, 3, 4, 6, 8, 12, 24, 36, 48 and 72 hours.

The time to peak drug concentration will be obtained directly from the data without interpolation

Time to Last Quantifiable Plasma Concentration (Tlast)
Blood samples will be drawn on Day 1 after dosing at 20, 40, and 60 minutes and at 2, 3, 4, 6, 8, 12, 24, 36, 48 and 72 hours.

The time to the last quantifiable drug concentration will be obtained directly from the data without interpolation.

Last Quantifiable Plasma Concentration (Clast)
Blood samples will be drawn on Day 1 after dosing at 20, 40, and 60 minutes and at 2, 3, 4, 6, 8, 12, 24, 36, 48 and 72 hours.

The concentration of the last quantifiable drug will be obtained directly from the data without interpolation concentration

Elimination Rate Constant (λz)
Blood samples will be drawn on Day 1 after dosing at 20, 40, and 60 minutes and at 2, 3, 4, 6, 8, 12, 24, 36, 48 and 72 hours.

The elimination rate constant (λz) will be calculated.

Termination Elimination Half-Life (T1/2)
Blood samples will be drawn on Day 1 after dosing at 20, 40, and 60 minutes and at 2, 3, 4, 6, 8, 12, 24, 36, 48 and 72 hours.

The terminal elimination half-life (T1/2) will be calculated.

Area Under the Curve (AUC)
Blood samples will be drawn on Day 1 after dosing at 20, 40, and 60 minutes and at 2, 3, 4, 6, 8, 12, 24, 36, 48 and 72 hours.

The AUC from time zero to the time of the last quantifiable concentration (AUClast) will be calculated.

Area Under the Curve to Infinity (AUCinf)
Blood samples will be drawn on Day 1 after dosing at 20, 40, and 60 minutes and at 2, 3, 4, 6, 8, 12, 24, 36, 48 and 72 hours.

The AUC from time zero extrapolated to infinity (AUCinf) will be calculate.

Percent Extrapolated of Area Under the Curve to Infinity (AUCextrap[%]).
Blood samples will be drawn on Day 1 after dosing at 20, 40, and 60 minutes and at 2, 3, 4, 6, 8, 12, 24, 36, 48 and 72 hours.

The percentage of AUCinf based on extrapolation (AUCextrap\[%\]).

Oral Clearance (Cl/F)
Blood samples will be drawn on Day 1 after dosing at 20, 40, and 60 minutes and at 2, 3, 4, 6, 8, 12, 24, 36, 48 and 72 hours.

The apparent oral clearance will be calculated.

Volume of Distribution (Vz/F)
Blood samples will be drawn on Day 1 after dosing at 20, 40, and 60 minutes and at 2, 3, 4, 6, 8, 12, 24, 36, 48 and 72 hours.

Vz/F, apparent volume of distribution will be calculated.

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Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
50 mg PTI-125ACTIVE_COMPARATORSix (6) subjects will receive a single orally administered dose of 50 mg PTI-125 in this cohort.
50 mg PTI-125 PlaceboPLACEBO_COMPARATORTwo (2) subjects will receive a single orally administered dose of 50 mg Placebo PTI-125 in this cohort.
100 mg PTI-125ACTIVE_COMPARATORSix (6) subjects will receive a single orally administered dose of 100 mg PTI-125 in this cohort.
100 mg PTI-125 PlaceboPLACEBO_COMPARATORTwo (2) subjects will receive a single orally administered dose of 100 mg Placebo PTI-125 in this cohort.
200 mg PTI-125ACTIVE_COMPARATORSix (6) subjects will receive a single orally administered dose of 200 mg PTI-125 in this cohort.
200 mg PTI-125 PlaceboPLACEBO_COMPARATORTwo (2) subjects will receive a single orally administered dose of 200 mg Placebo PTI-125 in this cohort.
Interventions
NameTypeDescription
50 mg PTI-125DRUGPTI-125 50 mg Oral Solution
100 mg PTI-125DRUGPTI-125 100 mg Oral Solution
200 mg PTI-125DRUGPTI-125 200 mg Oral Solution
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Eligibility Criteria
Age Range18 Years — 45 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Male or female subjects between 18 and 45 years of age, inclusive. * The subject has a body mass index (BMI) within 18-30 kg/m2 (inclusive). * The subject is in good health as determined by medical history and physical examination and clinical laboratory parameters. * The subj...

Countries:United States
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