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PF-07905428

Phase 1

Acne Vulgaris | Small molecule | Dermatology |Pfizer, Inc.|Last Updated: Dec 30, 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
RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment52
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06671834A Study to Learn About the Study Medicine Called PF-07905428 in Healthy Participants and Participants With Acne VulgarisPHASE1 COMPLETED 52Nov 22, 2024Dec 4, 2025Dec 30, 20251 Canada
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Study Endpoints
Primary Endpoints
Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
Through study completion, approximately 2 months

An adverse event (AE) was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. TEAEs were events between first dose of study drug and up to 37 days after last dose that were absent before treatment or that worsened relative to pretreatment state. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. TEAEs included SAEs and all non-SAEs that occurred during the study.

Number of Participants With Clinical Laboratory Abnormalities
Through study completion, approximately 2 months

Evaluation of participants with clinically meaningful changes from baseline in laboratory test results

Number of Participants With Abnormalities in Vital Signs
Through study completion, approximately 2 months

Any untoward vital sign findings that are identified during the active collection period and meet the definition of an AE or SAE.

Number of Participants With Clinically Significant Changes From Baseline in 12-Lead Electrocardiogram (ECG) Parameters
Through study completion, approximately 2 months

12-lead ECG were performed after the participant had rested quietly for at least 10 minutes in a supine position. ECG parameters included RR interval, PR interval, QRS complex, QT interval, corrected QT (QTc) interval, Bazett's correction QT (QTcB) interval, Heart Rate and Fridericia's correction (QTcF) interval. Clinical significance of 12-Lead ECG was judged by investigator.

Secondary Endpoints
Maximum plasma concentration (Cmax) of PF-07905428
Day 14 (Cohorts 1, 2, and 4) Day 28 (Cohorts 3 and 4)
Time to maximum plasma concentration (Tmax) of PF-07905428
Day 14 (Cohorts 1, 2, and 4) Day 28 (Cohorts 3 and 4)
Area Under the Serum Concentration-Time Curve Over the Dosing Interval (AUCtau) of PF-07905428
Day 14 (Cohorts 1, 2, and 4) Day 28 (Cohorts 3 and 4)
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
PF-07905428 Low StrengthEXPERIMENTALParticipants may receive 0.08% PF-07905428 QD. Area of application will be increased as the study proceeds from one cohort to the next.
PF-07905428 High StrengthEXPERIMENTALParticipants may receive 0.24% PF-07905428 QD. Area of application will be increased as the study proceeds from one cohort to the next.
PlaceboPLACEBO_COMPARATORAll participants will receive Placebo QD. Area of application will be increased as the study proceeds from one cohort to the next.
Interventions
NameTypeDescription
PF-07905428DRUGTopical solution of PF-07905428 0.08% or PF-07905428 0.24%
PlaceboDRUGTopical solution of placebo
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Eligibility Criteria
Age Range18 Years — 40 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Participants who are overtly healthy as determined by medical evaluation. * Only for participants who are enrolling with acne vulgaris: diagnosis of acne vulgaris for 3 months or greater * For participants enrolling in Cohort 1-3 with acne vulgaris (optional): mild to moderate...

Countries:Canada
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