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Low Dose PF-07328948

Phase 2

Heart Failure | Small molecule | Cardiovascular |Pfizer, Inc.|Last Updated: May 27, 2026

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 Enrollment620
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06991257A Study to Learn About the Study Medicine Called PF-07328948 in Adults With Heart Failure (BRANCH-HF)PHASE2 RECRUITING 620Jun 19, 2025Dec 14, 2027May 27, 2026142 United States, Brazil +11
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Study Endpoints
Primary Endpoints
Number of Participants with Clinical Events
over 36 weeks

Adjudicated cardiovascular death and worsening heart failure events through 36 weeks.

Change From Baseline in 6-Minute Walk Test (6MWD)
Baseline, week 36 post-dose

A submaximal exercise test that measures the distance the participant can walk within prescribed time of 6 minutes. Participants are asked to perform the test at a pace comfortable to them with as many breaks as needed. The total distance walked is recorded.

Change From Baseline in Kansas City Cardiomyopathy Questionnaire Overall Total Symptom Score (KCCQ-23 TSS)
Baseline, week 36

KCCQ is a 23-item heart-failure specific questionnaire quantified into the following scores: symptom frequency, symptom burden, symptom stability, physical limitations, social limitations, quality of life, and self-efficacy, total symptom score, overall summary score, and clinical summary score. To facilitate interpretation, all scores are presented on a scale of 0 to 100 points, with lower scores indicating more severe symptoms and/or limitations, and a score of 100 indicating no symptoms, no limitations, and excellent quality of life.

Secondary Endpoints
Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Treatment Emergent Serious Adverse Events (TESAEs)
Baseline, up to week 40
Change From Baseline in Kansas City Cardiomyopathy Questionnaire Overall Symptom Score (KCCQ-23 TSS) and physical limitation in participants taking PF-07328948 vs. placebo on HF disease-specific health status related to HFmrEF/HFpEF.
Baseline, week 36
Change From Baseline in 6-minute walk test distance (6MWD) in participants taking PF-07328948 vs. placebo on HF disease-specific health status related to HFmrEF/HFpEF.
Baseline, week 36
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
ARM 1PLACEBO_COMPARATORPlacebo Participants will receive Placebo for up to 36 weeks
ARM 2EXPERIMENTALLow dose PF-07328948 Participants will receive PF-07328948 for up to 36 weeks
ARM 3EXPERIMENTALMedium dose PF-07328948 Participants will receive PF-07328948 for up to 36 weeks
ARM 4EXPERIMENTALHigh dose PF-07328948 Participants will receive PF-07328948 for up to 36 weeks
Interventions
NameTypeDescription
PlaceboDRUGARM 1
Low Dose PF-07328948DRUGARM 2
Medium Dose PF-07328948DRUGARM 3
High Dose PF-07328948DRUGARM 4
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Eligibility Criteria
Age Range18 Years — 79 Years
SexALL
Healthy VolunteersNo
Study Sites142

This study is seeking participants who are: Key Inclusion Criteria include: * aged 18 years to \< 80 years * clinically confirmed to have a diagnosis of heart failure for at least 3 months * New York Heart Association Class II-IV symptoms * left ventricular ejection fraction greater than 40% * Kan...

Countries:United StatesBrazilBulgariaCanadaChinaCzechiaFranceHungaryJapanPolandPuerto RicoSpainUnited Kingdom
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Recent Changes (Last 90 Days)
LOWMay 28, 2026NCT06991257lastUpdatePostDate: changed
LOWMay 28, 2026NCT06991257lastUpdatePostDate: changed
LOWMay 26, 2026NCT06991257primaryCompletionDate: changed
LOWMay 24, 2026NCT06991257studyFirstPostDate: changed