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Tafamidis free acid

Phase 1

Healthy | Small molecule | Other |Pfizer, Inc.|Last Updated: May 28, 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
RandomizedCONTROLLEDBiomarker
Total Trials5
Total Enrollment91
FDA Designations
No designations recorded
Clinical Trials (5)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06705569A Study to Compare Two Forms of Study Medicine Tafamidis in the Blood in Healthy AdultsPHASE1 COMPLETED 22Dec 20, 2024Apr 4, 2025May 28, 20251 Belgium
NCT06273839A Study to Learn How Different Forms of Study Medicine Tafamidis Are Taken Up Into The Blood in Healthy AdultsPHASE1 COMPLETED 12Feb 27, 2024May 27, 2024Jun 26, 20241 Belgium
NCT05498701A Study Comparing Two Forms of Tafamidis Without Food and the Amount of Tafamidis in the Blood With FoodPHASE1 COMPLETED 22Sep 29, 2022Dec 19, 2022Jun 3, 20241 Canada
NCT05482308A Study to Compare Two Tablet Forms of Tafamidis in Healthy ParticipantsPHASE1 COMPLETED 12Aug 29, 2022Oct 28, 2022May 23, 20241 Belgium
NCT04575116A Study to Determine the Bioequivalence of Two Doses of TafamidisPHASE1 COMPLETED 23Sep 17, 2020Feb 23, 2021Mar 8, 20211 United States
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Study Endpoints
Primary Endpoints
Area under the concentration-time curve (AUCinf)
Hour 0, 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168

Area under the plasma concentration time profile from time zero extrapolated to infinite time

Maximum observed plasma concentration (Cmax)
Hour 0, 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168

Peak or maximum observed concentration

Pharmacokinetics(PK) Parameter - Area Under the Concentration-time Curve to Infinity (AUCinf) of PF-06291826
Predose and 0.5, 1,2,3,4,6,8,12,24 (Day 2),48 (Day 3),72 (Day 4),96 (Day 5),120 (Day 6),144 (Day 7), and 168 (Day 8) hours post dose

AUCinf is defined as area under the concentration-time curve from time 0 to infinity, and calculated by AUC(0-tlast) + (Clast\*/kel), where Clast\* is the estimated plasma concentration at the last quantifiable time point (Clast) estimated form the log-linear regression analysis Clast\* = Clast x e\^(-kel x tlast)

PK Parameter - Maximum Observed Concentration (Cmax) of PF-06291826
Predose and 0.5, 1,2,3,4,6,8,12,24 (Day 2),48 (Day 3),72 (Day 4),96 (Day 5),120 (Day 6),144 (Day 7), and 168 (Day 8) hours post dose

Cmax is defined as maximum observed concentration.

Area Under the Plasma Concentration-time Profile From Time Zero Extrapolated to Infinite Time (AUCinf) of Tafamidis (Both Variant 12.2 mg Tafamidis Free Acid Tablet and Proposed Commercial 12.2 mg Tafamidis Free Acid Tablet)
Days 1 (Pre-dose,0.5,1,2,3,4,6,8,12 hours post dose),2,3,4,5,6,7 and 8 in both Periods 1 and 2.

The AUCinf was determined by AUClast+ (Clast\*/kel), where Clast\* is the predicted plasma concentration at the last quantifiable time point estimated from the log-linear regression analysis; kel is the terminal phase rate constant calculated by a linear regression of the log-linear concentration-time curve.

Maximum Plasma Concentration (Cmax) of Tafamidis (Both Variant 12.2 mg Tafamidis Free Acid Tablet and Proposed Commercial 12.2 mg Tafamidis Free Acid Tablet)
Days 1 (Pre-dose,0.5,1,2,3,4,6,8,12 hours post dose),2,3,4,5,6,7 and 8 in both Periods 1 and 2.

Cmax was observed directly from data.

Secondary Endpoints
Number or percentage of patients with abnormal physical examination findings
Baseline up to Day 25
Number or percentage of patients with change from baseline in Clinical Laboratory parameters
Baseline up to Day 25
Number or percentage of patients with change from baseline in Vital sign measurements
Baseline up to Day 25
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelCROSSOVER
PurposeBASIC_SCIENCE
Treatment Arms
ArmTypeDescription
Test tablet followed by Reference capsuleEXPERIMENTALOn Day 1 of each period, participants will receive a single dose of 1 of the tafamidis formulations. Each period is separated by a washout of at least 16 days between administration of study drug
Reference capsule followed by Test tabletEXPERIMENTALOn Day 1 of each period, participants will receive a single dose of 1 of the tafamidis formulations. Each period is separated by a washout of at least 16 days between administration of study drug
Test 1 tablet followed by Test 2 tablet followed by Reference capsuleEXPERIMENTALOn Day 1 of each period, participants will receive a single dose of 1 of the tafamidis formulations. Each period is separated by a washout of at least 16 days between administration of study drug
Test 1 tablet followed by Reference capsule followed by Test 2 tabletEXPERIMENTALOn Day 1 of each period, participants will receive a single dose of 1 of the tafamidis formulations. Each period is separated by a washout of at least 16 days between administration of study drug
Test 2 tablet followed by Reference capsule followed by Test 1 tabletEXPERIMENTALOn Day 1 of each period, participants will receive a single dose of 1 of the tafamidis formulations. Each period is separated by a washout of at least 16 days between administration of study drug
Test 2 tablet followed by Test 1 tablet followed by Reference capsuleEXPERIMENTALOn Day 1 of each period, participants will receive a single dose of 1 of the tafamidis formulations. Each period is separated by a washout of at least 16 days between administration of study drug
Reference capsule followed by Test 1 tablet followed by Test 2 tabletEXPERIMENTALOn Day 1 of each period, participants will receive a single dose of 1 of the tafamidis formulations. Each period is separated by a washout of at least 16 days between administration of study drug
Reference capsule followed by Test 2 tablet followed by Test 1 tabletEXPERIMENTALOn Day 1 of each period, participants will receive a single dose of 1 of the tafamidis formulations. Each period is separated by a washout of at least 16 days between administration of study drug
Test tablet (fasted) followed by Reference capsule (fasted) followed by Test tablet (fed)EXPERIMENTALOn Day 1 of each period, participants will receive a single dose of one of the tafamidis formulations under fasted or fed conditions. Each period is separated by a washout of at least 16 days between administration of study drug.
Reference capsule (fasted) followed by Test tablet (fasted) followed by Test tablet (fed)EXPERIMENTALOn Day 1 of each period, participants will receive a single dose of one of the tafamidis formulations under fasted or fed conditions. Each period is separated by a washout of at least 16 days between administration of study drug.
Test tablet followed by Reference tabletEXPERIMENTALOn Day 1 of each period, participants will receive a single dose of 1 of the tafamidis formulations. Each period is separated by a washout of at least 16 days between administration of study drug.
Reference tablet followed by Test tabletEXPERIMENTALOn Day 1 of each period, participants will receive a single dose of 1 of the tafamidis formulations. Each period is separated by a washout of at least 16 days between administration of study drug
Tafamidis Free acid tablet then tafamidis meglumine capsuleEXPERIMENTALOn Day 1 of each period, participants will receive a single dose of 1 of tafamidis formulations. Each period is separated by a washout of at least 16 days between administration of study drug.
Tafamidis meglumine capsule then Tafamidis Free acid tabletEXPERIMENTALOn Day 1 of each period, participants will receive a single dose of 1 of tafamidis formulations. Each period is separated by a washout of at least 16 days between administration of study drug.
Interventions
NameTypeDescription
Tafamidis 61 mg free acid tablet (Test)DRUGTafamidis 61 mg free acid tablet (Test)
Tafamidis 61 mg free acid capsule (Reference)DRUGTafamidis 61 mg free acid capsule (Reference)
Tafamidis 61 mg free acid tablet (Test 1)DRUGTafamidis 61 mg free acid tablet (Test 1)
Tafamidis 70 mg free acid tablet (Test 1)DRUGTafamidis 61 mg free acid tablet (Test 1)
Tafamidis free acid tablet (Test)DRUG12.2 mg tafamidis free acid tablet (Test)
Tafamidis meglumine capsule (Reference)DRUGCommercial 20 mg tafamidis meglumine capsule (Reference)
Tafamidis free acid tablet (Reference)DRUGProposed commercial 12.2 mg tafamidis free acid tablet (Reference)
Tafamidis free acid tabletDRUG12.2 mg tafamidis free acid tablet
Tafamidis meglumine capsuleDRUG20 mg tafamidis meglumine soft gelatin capsule
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: Age and Sex: 1. Participants aged 18 years or older (or the minimum age of consent in accordance with local regulations) at screening. 2. Healthy female participants of nonchildbearing potential and/or male participants who are overtly healthy as determined by medical evaluatio...

Countries:BelgiumCanadaUnited States
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