A Phase III Study to Investigate the Efficacy and Safety of Baxdrostat in Combination With Dapagliflozin on CKD Progression in Participants With CKD and High Blood Pressure.

Description

The purpose of this study is to measure the efficacy and safety of baxdrostat/dapagliflozin in participants ≥ 18 years of age with CKD and HTN. This study consists of a screening, a 4-week dapagliflozin run-in period for participants naïve to SGLT2i at baseline; a 24-month double-blind period in which participants will receive either baxdrostat/dapagliflozin or dapagliflozin; and a 6-week open-label period in which all participants will discontinue baxdrostat/placebo and receive dapagliflozin alone. Site visits will take place at 2-, 4-, 8-, and 16- weeks following randomisation. Thereafter visits will occur approximately every 4 months, until the 24-month visit at which time baxdrostat/placebo will be discontinued. Participants will continue open-label dapagliflozin for another 6-weeks (approximately), where reassessment of GFR will occur for the primary efficacy endpoint. In the event of premature discontinuation of blinded study intervention, participants will continue in the study and receive open-label dapagliflozin monotherapy, unless the participant meets dapagliflozin specific discontinuation criteria, in which case all study interventions will be discontinued.

Conditions

Chronic Kidney Disease and Hypertension

Study Overview

Study Details

Study overview

The purpose of this study is to measure the efficacy and safety of baxdrostat/dapagliflozin in participants ≥ 18 years of age with CKD and HTN. This study consists of a screening, a 4-week dapagliflozin run-in period for participants naïve to SGLT2i at baseline; a 24-month double-blind period in which participants will receive either baxdrostat/dapagliflozin or dapagliflozin; and a 6-week open-label period in which all participants will discontinue baxdrostat/placebo and receive dapagliflozin alone. Site visits will take place at 2-, 4-, 8-, and 16- weeks following randomisation. Thereafter visits will occur approximately every 4 months, until the 24-month visit at which time baxdrostat/placebo will be discontinued. Participants will continue open-label dapagliflozin for another 6-weeks (approximately), where reassessment of GFR will occur for the primary efficacy endpoint. In the event of premature discontinuation of blinded study intervention, participants will continue in the study and receive open-label dapagliflozin monotherapy, unless the participant meets dapagliflozin specific discontinuation criteria, in which case all study interventions will be discontinued.

A Phase III, Randomised, Double-Blind Study to Assess the Efficacy, Safety and Tolerability of Baxdrostat in Combination With Dapagliflozin Compared With Dapagliflozin Alone on Chronic Kidney Disease (CKD) Progression in Participants With CKD and High Blood Pressure

A Phase III Study to Investigate the Efficacy and Safety of Baxdrostat in Combination With Dapagliflozin on CKD Progression in Participants With CKD and High Blood Pressure.

Condition
Chronic Kidney Disease and Hypertension
Intervention / Treatment

-

Contacts and Locations

Fairhope

Research Site, Fairhope, Alabama, United States, 36532

Phoenix

Research Site, Phoenix, Arizona, United States, 85016

Surprise

Research Site, Surprise, Arizona, United States, 85374

Tucson

Research Site, Tucson, Arizona, United States, 85710

Searcy

Research Site, Searcy, Arkansas, United States, 72143

Beverly Hills

Research Site, Beverly Hills, California, United States, 90211

Canyon Country

Research Site, Canyon Country, California, United States, 91351

Fremont

Research Site, Fremont, California, United States, 94538

Fullerton

Research Site, Fullerton, California, United States, 92835

Huntington Park

Research Site, Huntington Park, California, United States, 90255

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

For general information about clinical research, read Learn About Studies.

Eligibility Criteria

  • 1. Participants of any sex and gender must be ≥ 18 years old, or older, at the time of signing the informed consent.
  • 2. Participants with CKD and eGFR ≥ 30 and \< 90 mL/min/1.73 m2 at screening
  • 3. Urine albumin creatinine ratio \> 200 mg/g (22.6 mg/mmol) and \< 5000 mg/g (565 mg/mmol) at screening
  • 4. Participants with history of HTN and a SBP ≥ 130 mmHg at screening and ≥ 120 mmHg at the randomisation visit
  • 5. Stable and maximum tolerated dose of an ACE inhibitor or an ARB (not both) for at least 4 weeks prior to Screening Visit
  • 6. Central laboratory serum potassium must meet the following criteria at the Screening Visit, based on screening eGFR:
  • * for participants with screening eGFR ≥ 45 mL/min/1.73 m2, potassium must be ≥ 3.0 and ≤ 4.8 mmol/L at the Screening Visit
  • * for participants with screening eGFR \< 45 mL/min/1.73 m2, potassium must be ≥ 3.0 and ≤ 4.5 mmol/L at the Screening Visit
  • 1. Systolic blood pressure \> 180 mmHg, or DBP \> 110 mmHg at screening.
  • 2. Known hyperkalaemia, defined as potassium of ≥ 5.5 mmol/L within 3 months at screening.
  • 3. Serum sodium \< 135 mmol/L at the Screening Visit, determined as per central laboratory.
  • 4. Diabetes mellitus:
  • 5. New York Heart Association functional HF class IV at screening.
  • 6. Stroke, transient ischaemic cerebral attack, valve implantation or valve replacement, carotid surgery, or carotid angioplasty, acute coronary syndrome, or hospitalisation for worsening heart failure within previous 3 months prior to randomisation.
  • 7. Any dialysis (including for acute kidney injury) within 3 months prior to Screening Visit.
  • 8. Any acute kidney injury within 3 months prior to the Screening Visit
  • 9. History of organ transplant or bone marrow transplant, or planned organ transplant within 6 months following randomisation (including kidney transplant).
  • 10. History or ongoing allergy/hypersensitivity, as judged by the investigator, to SGLT2 inhibitor (eg, empagliflozin) or ASI.
  • 11. Any clinical condition requiring systemic immunosuppression therapy other than stable maintenance therapy for at least 3 months prior to Visit 1.
  • 12. Any use of mineralocorticoid receptor antagonists (such as spironolactone, eplerenone, or finerenone), potassium-sparing diuretics (such as triamterene or amiloride), or potassium binders (such as sodium zirconium cyclosilicate, patiromer, or sodium polystyrene sulfonate) within 4 weeks prior to screening.

Ages Eligible for Study

18 Years to 130 Years

Sexes Eligible for Study

ALL

Accepts Healthy Volunteers

No

Collaborators and Investigators

AstraZeneca,

Study Record Dates

2027-12-09