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OPtimizing Aldosterone Receptor Antagonist Therapy by Sodium Zirconium Cyclosili-cate in Heart Failure -Extension (OPRA-HF Extension)

OPtimizing Aldosterone Receptor Antagonist Therapy by Sodium Zirconium Cyclosili-cate in Heart Failure -Extension (OPRA-HF Extension)

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07576257
Acronym
OPRA-HF Extens
Enrollment
110
Registered
2026-05-08
Start date
2026-09-01
Completion date
2030-06-30
Last updated
2026-05-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Heart Failure

Keywords

effect

Brief summary

A multicenter, randomized, controlled study in Sweden (n=110). This study consists of 2 phases: 1) open-label run-in within approximately 2 months, and 2) randomized, double-blinded and placebo-controlled treatment for 6 months. The open-label phase, in turn, consists of three periods: up-titration (normally 1 - 2 weeks, and longer in some cases), correction (maximum 72 hours) and maintenance (4 - 7 weeks).

Detailed description

A multicenter, randomized, controlled study in Sweden (n=110). This study consists of 2 phases: 1) open-label run-in within approximately 2 months, and 2) randomized, double-blinded and placebo-controlled treatment for 6 months. The open-label phase, in turn, consists of three periods: up-titration (normally 1 - 2 weeks, and longer in some cases), correction (maximum 72 hours) and maintenance (4 - 7 weeks). Eligible study population: 1. \>70 yrs. 2. Regardless of LVEF but EF measured within past 2 years. For HFpEF echo criteria defined by ≥2 of: LV wall thickness ≥ 12 mm; LV mass index (BSA indexed LVH): male \>115 g/m2, female \>95 g/m2; relative wall thickness ≥0.42; E/e' ≥15 in sinus rhythm (or \> 11 in the setting of atrial fibrillation); tricuspid regurgitation velocity \>2.8 m/s; Left atrial volume index \>34 ml/m2. 3. GFR ≥ 20 mL/min/1,73 m². 4. NYHA II-IV. 5. On optimal treatment as per physician´s judgement including ACE/ARB/ARNI, beta blockers, SGLT2 inhibitor för HFrEF/HFmrEF, and SGLT2 inhibitors in HFpEF 6. Suboptimal treatment with MRA (defined as: no use or ≤ 25 mg daily 7. And one of following: 1\) Prior hyperkalemia (S-K\> 5.0 mmol/L or P-K\> 4.8 mmol/L\*) during MRA treatment within last 24 months, and current S-K ≤ 5.0 or P-K ≤ 4.8 mmol/L 2) Current S-K 4.5-5.0 mmol/L or P-K 4.3-4.8 mmol/L, and potential risk of hyperkalemia as indicated by eGFR 30-45 ml/min/1,73 m2 3) Current S-K 5.1-5.9 mmol/L or P-K 4.9-5.7 mmol/L * Corresponding plasma K (P-K) level is 0.2 mmol lower than serum K(S-K). Hyperkalemia is defined as P-K \> 4,8 mmol/L or S-K \>5,0 mmol/L. Detailed inclusion and exclusions are described in Clinical Trial Org (NCT 047809239)

Interventions

DRUGpotassium binder

Sodium Zirconium Cyclosilicate

Sponsors

Sahlgrenska University Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

randomized, but open control

Eligibility

Sex/Gender
ALL
Age
70 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* 1\. \>70 yrs. 2. Regardless of LVEF but EF measured within past 2 years. For HFpEF echo criteria defined by ≥2 of: LV wall thickness ≥ 12 mm; LV mass index (BSA indexed LVH): male \>115 g/m2, female \>95 g/m2; relative wall thickness ≥0.42; E/e' ≥15 in sinus rhythm (or \> 11 in the setting of atrial fibrillation); tricuspid regurgitation velocity \>2.8 m/s; Left atrial volume index \>34 ml/m2. 3\. GFR ≥ 20 mL/min/1,73 m². 4. NYHA II-IV. 5. On optimal treatment as per physician´s judgement including ACE/ARB/ARNI, beta blockers, SGLT2 inhibitor för HFrEF/HFmrEF, and SGLT2 inhibitors in HFpEF 6. Suboptimal treatment with MRA (defined as: no use or ≤ 25 mg daily 7. And one of following: 1. Prior hyperkalemia (S-K\> 5.0 mmol/L or P-K\> 4.8 mmol/L\*) during MRA treatment within last 24 months, and current S-K ≤ 5.0 or P-K ≤ 4.8 mmol/L 2. Current S-K 4.5-5.0 mmol/L or P-K 4.3-4.8 mmol/L, and potential risk of hyperkalemia as indicated by eGFR 30-45 ml/min/1,73 m2 3. Current S-K 5.1-5.9 mmol/L or P-K 4.9-5.7 mmol/L * Corresponding plasma K (P-K) level is 0.2 mmol lower than serum K(S-K). Hyperkalemia is defined as P-K \> 4,8 mmol/L or S-K \>5,0 mmol/L.

Design outcomes

Primary

MeasureTime frameDescription
% of optimizing MRA between Sodium Zirconium Cyclosilicate treated vs controlFrom enrollment to the end of treatment at 6 monthsThe efficacy will be assessed by difference in the proportion of patients who may or may not maintain MRA at a dose ≥ 25 mg da
To demonstrate the efficacy of Sodium Zirconium Cyclosilicate (SZC) on optimizing MRA in HF, SZC vs control.6 mopnthsThe efficacy will be assessed by difference in the proportion of patients who may or may not maintain MRA at a dose ≥ 25 mg da

Contacts

CONTACTMichael Liangxiong Fu
michael.fu@gu.se0739228176

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 9, 2026