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Recruiting Phase 2 NCT06991257

NCT06991257 A Study to Learn About the Study Medicine Called PF-07328948 in Adults With Heart Failure (BRANCH-HF)

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Clinical Trial Summary
NCT ID NCT06991257
Status Recruiting
Phase Phase 2
Sponsor Pfizer
Condition Heart Failure
Study Type INTERVENTIONAL
Enrollment 620 participants
Start Date 2025-06-19
Primary Completion 2027-11-16

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age 79 Years
Study Type INTERVENTIONAL
Interventions
PlaceboLow Dose PF-07328948Medium Dose PF-07328948

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

In Phase 2, researchers evaluate early signs of effectiveness. You may be randomized to receive the active treatment or a comparator. Monitoring continues closely.

This trial targets 620 participants in total. It began in 2025-06-19 with a primary completion date of 2027-11-16.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

The purpose of this study is to learn about the safety and effects of the study medicine (PF-07328948) for the possible treatment of heart failure (HF).

Eligibility Criteria

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% * Kansas City Cardiomyopathy Questionnaire-23 Total Symptom Score \< 85 * Six-minute walking distance greater than 75 meters Key Exclusion Criteria include: * Type 1 diabetes mellitus, liver cirrhosis or any condition that can possibly affect how the medicine is absorbed into the body. * Major surgery scheduled for the duration of the study, affecting walking ability in the opinion of the study doctor. * History of heart transplantation, or currently listed for a heart transplant, or current planned use of IV vasodilators and/ or inotropes * Prior intolerance/known hypersensitivity to an SGLT2 inhibitor or contraindication to an SGLT2 inhibitor

Contact & Investigator

Central Contact

Pfizer CT.gov Call Center

✉ ClinicalTrials.gov_Inquiries@pfizer.com

📞 1-800-718-1021

Principal Investigator

Pfizer CT.gov Call Center

STUDY DIRECTOR

Pfizer

Frequently Asked Questions

Who can join the NCT06991257 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, up to 79 Years, studying Heart Failure. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT06991257 trial and what does that mean for participants?

Phase 2 trials evaluate whether the treatment shows signs of effectiveness while continuing to monitor safety. More participants are enrolled than in Phase 1 to help refine the treatment protocol.

Is NCT06991257 currently recruiting?

Yes, NCT06991257 is actively recruiting participants. Contact the research team at ClinicalTrials.gov_Inquiries@pfizer.com for enrollment information.

Where is the NCT06991257 trial being conducted?

This trial is being conducted at Beverly Hills, United States, Lake Forest, United States, Santa Maria, United States, Santa Maria, United States and 11 additional locations.

Who is sponsoring the NCT06991257 clinical trial?

NCT06991257 is sponsored by Pfizer. The principal investigator is Pfizer CT.gov Call Center at Pfizer. The trial plans to enroll 620 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: July 2026  ·  Data Methodology