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PF-07905428

Phase 1

Acne Vulgaris | Small molecule | Dermatology |Pfizer, Inc.|Last Updated: Dec 30, 2025

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment52

FDA Designations

No designations recorded

Clinical trial landscape

PF-07905428 · 1 trial · 1 indication

Phase 1 1
NCT06671834A Study to Learn About the Study Medicine Called PF-07905428 in Healthy Participants and Participants With Acne VulgarisAcne Vulgaris
COMPLETED52 Analytics
PHASE1COMPLETED
A Study to Learn About the Study Medicine Called PF-07905428 in Healthy Participants and Participants With Acne Vulgaris
Acne VulgarisUnlock trial analytics

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 to 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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Frequently asked questions about PF-07905428

What is PF-07905428 used for?

PF-07905428 is an investigational small molecule being developed for the treatment of acne vulgaris. It is currently in Phase 1 clinical development and is being studied in healthy participants and participants with acne vulgaris.

Who makes PF-07905428?

PF-07905428 is being developed by Pfizer, Inc. (NYSE: PFE). The company is conducting clinical trials to evaluate the safety and efficacy of this investigational drug for acne vulgaris.

What phase is PF-07905428 in?

PF-07905428 is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. A Phase 1 study has been completed to evaluate the drug in healthy participants and those with acne vulgaris.

What clinical trials is PF-07905428 in?

PF-07905428 has one completed Phase 1 clinical trial, identified as NCT06671834. This study enrolled 52 participants and was conducted in Canada. The trial was randomized, double-blind, and placebo-controlled, including healthy volunteers and participants with acne vulgaris.

Is PF-07905428 the same as any other drug?

PF-07905428 is the primary name for this investigational drug. No alternative names have been disclosed in the available clinical trial information. It is a unique small molecule being studied for acne vulgaris.