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Heart FailurePhase 2Cycle-1-REFNCT06215911

A Study to Assess Safety & Effectiveness of Tovinontrine in Chronic Heart Failure With Reduced Ejection Fraction (Cycle-1-REF)

A Phase 2 study testing Tovinontrine (CRD-750) in people with Heart Failure and Heart Failure With Reduced Ejection Fraction, run by Cardurion Pharmaceuticals, Inc. at 139 sites in 19 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

The purpose of this study is to evaluate the safety and effectiveness of tovinontrine compared to placebo to lower NT-proBNP in patients with chronic heart failure with reduced ejection fraction. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Tovinontrine (CRD-750)
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
557 participants
Where
139 sitesin 19 countries
Study dates
13 Feb 2024to 10 Oct 2025
Phase
Phase 2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Is an adult male or female patient ≥18 years of age
  • Has evidence in the medical history supporting a diagnosis of clinical HF syndrome, NYHA functional class II to III, with the duration of at least 6 months prior to the time of Screening. The HF syndrome is defined by documentation of 1 or more of the following:
  • At least 1 of the typical symptoms due to HF such as dyspnea and/or fatigue limiting exercise capacity;
  • At least 1 of the typical signs of HF such as peripheral edema, elevated jugular venous pressure, pulmonary crackles; or
  • Hospitalization, emergency department visit, or outpatient visit for HF requiring intravenous (IV) or subcutaneous (SQ) diuresis within the past 12 months.
  • Has ejection fraction (EF) ≤ 40% by transthoracic echocardiogram (TTE) performed and interpreted locally at the time of Screening;
Show all 9Show fewer
  • Has NT-proBNP level ≥ 600 pg/mL at the time of Screening. Patients with atrial fibrillation or flutter at the time of Screening are required to have an NT-proBNP level of ≥ 1000 pg/mL at the time of Screening;
  • Is on stable optimized doses of guideline-directed HF therapy, per Investigator's clinical judgement, for a minimum of 4 weeks prior to the time of Screening and during Screening, with no planned changes after randomization.
  • Has had no addition of new guideline-directed HF therapy within the 3 months prior to the time of Screening or during the Screening Period;

Who cannot join

  • Has a documented EF >40% by TTE within 6 months of the time of Screening or during the Screening Period;
  • Has evidence of recent HF exacerbation defined by hospitalization or requirement for IV or SQ diuretics within 60 days of the time of Screening or during the Screening Period;
  • Has a requirement for routine, scheduled outpatient IV infusions for HF (ie, inotropes, vasodilators, or diuretics) or routinely scheduled ultrafiltration;
  • Has elective interventions (eg, percutaneous coronary intervention, device implantations, percutaneous structural heart disease interventions, cardiac and non-cardiac surgery) planned to occur during involvement in this study;
  • Has acute coronary syndrome, stroke, transient ischemic attack, cardiac, carotid or other major cardiovascular surgery, or carotid angioplasty within 60 days of the time of Screening or during the Screening Period;
  • Has had a prior or planned orthotopic heart transplantation;
  • Has presence of or plan for mechanical circulatory support;
  • Note: Other protocol defined Inclusion/Exclusion criteria may apply.

Trial locations and contacts

139 sites in 19 countries.

139 sites in 19 countries

United States26 sites
  • Cardurion Investigative Site

    Alexandria, Louisiana, 71301

  • Cardurion Investigative Site

    Baltimore, Maryland, 21201

  • Cardurion Investigative Site

    Beverly Hills, California, 90211

  • Cardurion Investigative Site

    Birmingham, Alabama, 35233

  • Cardurion Investigative Site

    Buffalo, New York, 14215

  • Cardurion Investigative Site

    Burlington, Vermont, 05401

  • Cardurion Investigative Site

    Cleveland, Ohio, 44195

  • Cardurion Investigative Site

    Covington, Louisiana, 70433

  • Cardurion Investigative Site

    Dallas, Texas, 75226

  • Cardurion Investigative Site

    Hazel Crest, Illinois, 60429

  • Cardurion Investigative Site

    Jacksonville, Florida, 32216

  • Cardurion Investigative Site

    Little Rock, Arkansas, 72204

  • Cardurion Investigative Site

    Madison, Wisconsin, 53792

  • Cardurion Investigative Site

    McKinney, Texas, 75069

  • Cardurion Investigative Site

    Miami, Florida, 33137

  • Cardurion Investigative Site

    Nashville, Tennessee, 37232

  • Cardurion Investigative Site

    New York, New York, 10025

  • Cardurion Investigative Site

    Oklahoma City, Oklahoma, 73135

  • Cardurion Investigative Site

    Omaha, Nebraska, 68198

  • Cardurion Investigative Site

    Orange, California, 92868

  • Cardurion Investigative Site

    Peoria, Illinois, 61636

  • Cardurion Investigative Site

    Rapid City, South Dakota, 57701

  • Cardurion Investigative Site

    Seattle, Washington, 98195

  • Cardurion Investigative Site

    St Louis, Missouri, 63110

  • Cardurion Investigative Site

    Torrance, California, 90502

  • Cardurion Investigative Site

    Van Nuys, California, 91405

Other trials in United States

Poland13 sites
  • Cardurion Investigative Site

    Grodzisk Mazowiecki, 05-825

  • Cardurion Investigative Site

    Krakow, 31-216

  • Cardurion Investigative Site

    Lodz, 92-213

  • Cardurion Investigative Site

    Lodz, 94-255

  • Cardurion Investigative Site

    Lodz

  • Cardurion Investigative Site

    Lublin, 20-011

  • Cardurion Investigative Site

    Lublin, 20-049

  • Cardurion Investigative Site

    Sopot, 81-717

  • Cardurion Investigative Site

    Szczecin

  • Cardurion Investigative Site

    Torun, 87-100

  • Cardurion Investigative Site

    Warsaw, 04-628

  • Cardurion Investigative Site

    Wroclaw, 50-556

  • Cardurion Investigative Site

    Wroclaw, 50-981

Other trials in Poland

Bulgaria11 sites
  • Cardurion Investigative Site

    Burgas, 8008

  • Cardurion Investigative Site

    Gabrovo, 5300

  • Cardurion Investigative Site

    Pazardzhik, 4400

  • Cardurion Investigative Site

    Plovdiv, 4002

  • Cardurion Investigative Site

    Plovdiv, 4003

  • Cardurion Investigative Site

    Rousse, 7000

  • Cardurion Investigative Site

    Sofia, 1000

  • Cardurion Investigative Site 2

    Sofia, 1233

  • Cardurion Investigative Site

    Sofia, 1233

  • Cardurion Investigative Site

    Stara Zagora, 6000

  • Cardurion Investigative Site

    Veliko Tarnovo, 5006

Other trials in Bulgaria

United Kingdom10 sites
  • Cardurion Investigative Site

    Bridgend, CF31 1RQ

  • Cardurion Investigative Site

    Chichester, PO19 6SE

  • Cardurion Investigative Site

    Dundee, DD1 9SY

  • Cardurion Investigative Site

    Glasgow, G81 4DY

  • Cardurion Investigative Site

    Harrow, HA1 3UJ

  • Cardurion Investigative Site

    Isleworth, TW7 6AF

  • Cardurion Investigative Site

    London, NW1 2BU

  • Cardurion Investigative Site

    London, SE5 9RS

  • Cardurion Investigative Site

    Southampton, SO16 6YD

  • Cardurion Investigative Site

    Wythenshawe, Manchester, M23 9QZ

Other trials in United Kingdom

Belgium8 sites
  • Cardurion Investigational Site

    Bruges, 8000

  • Cardurion Investigative Site

    Brussels, 1070

  • Cardurion Investigative Site

    Brussels

  • Cardurion Investigative Site

    Genk

  • Cardurion Investigative Site

    Ghent, 9000

  • Cardurion Investigative Site

    Hasselt, 3500

  • Cardurion Investigative Site

    Kortrijk, 8500

  • Cardurion Investigative Site

    Sint-Niklaas, 9100

Other trials in Belgium

Hungary8 sites
  • Cardurion Investigative Site

    Balatonfüred, 8230

  • Cardurion Investigative Site

    Budapest, 1148

  • Cardurion Investigative Site

    Budapest, H-1122

  • Cardurion Investigative Site

    Gyöngyös, 3200

  • Cardurion Investigative Site

    Hatvan, 3000

  • Cardurion Investigative Site

    Kaposvár, 7400

  • Cardurion Investigative Site

    Orosháza, 5900

  • Cardurion Investigative Site

    Zalaegerszeg, 8900

Other trials in Hungary

Netherlands8 sites
  • Cardurion Investigative Site

    Goes, 4462 RA

  • Cardurion Investigative Site

    Groningen, 9713 GZ

  • Cardurion Investigative Site

    Hardenberg, 7772 SE

  • Cardurion Investigative Site

    Sneek, 8601 ZR

  • Cardurion Investigative Site

    The Hague, 2545 AA

  • Cardurion Investigative Site

    Utrecht, 3582 KE

  • Cardurion Investigative Site

    Veldhoven, 5504 DB

  • Cardurion Investigative Site

    Zutphen, 7207 AE

Other trials in Netherlands

Slovakia8 sites
  • Cardurion Investigative Site

    Bardejov

  • Cardurion Investigative Site

    Bratislava

  • Cardurion Investigative Site

    Handlová, 972 51

  • Cardurion Investigative Site

    Košice, 040 022

  • Cardurion Investigative Site

    Košice

  • Cardurion Investigative Site

    Nitra, 949 01

  • Cardurion Investigative Site

    Prešov, 080 01

  • Cardurion Investigative Site

    Žilina

Other trials in Slovakia

Spain8 sites
  • Cardurion Investigative Site

    Alicante, 03010

  • Cardurion Investigative Site

    Córdoba, 14004

  • Cardurion Investigative Site

    El Palmar, Murcia, 30120

  • Cardurion Investigative Site

    Madrid, 28041

  • Cardurion Investigative Site

    Málaga, 29010

  • Cardurion Investigative Site

    Santiago de Compostela, 15706

  • Cardurion Investigative Site

    Seville, 41009

  • Cardurion Investigative Site

    Valencia, 46026

Other trials in Spain

Georgia7 sites
  • Cardurion Investigative Site

    Tbilisi, 0102

  • Cardurion Investigative Site

    Tbilisi, 0131

  • Cardurion Investigative Site

    Tbilisi, 0141

  • Cardurion Investigative Site 2

    Tbilisi, 0159

  • Cardurion Investigative Site

    Tbilisi, 0159

  • Cardurion Investigative Site

    Tbilisi, 0160

  • Cardurion Investigative Site

    Tbilisi, 0186

Other trials in Georgia

Canada6 sites
  • Cardurion Investigative Site

    Cambridge, Ontario, N1R 6V6

  • Cardurion Investigative Site

    Chicoutimi, Quebec, G7H 7K9

  • Cardurion Investigative Site

    Hamilton, Ontario, L8L 2X2

  • Cardurion Investigative Site

    Montreal, Quebec

  • Cardurion Investigative Site

    Sherbrooke, J1G 2E8

  • Cardurion Investigative Site

    Trois-Rivières, G9B 2N3

Other trials in Canada

Germany5 sites
  • Cardurion Investigative Site

    Berlin, Brandenburg, 10787

  • Cardurion Investigative Site

    Dresden, 01067

  • Cardurion Investigative Site

    Elsterwerda, Brandenburg, 04910

  • Cardurion Investigative Site

    Magdeburg, 39120

  • Cardurion Investigative Site

    Papenburg, Lower Saxony, 26871

Other trials in Germany

Taiwan5 sites
  • Cardurion Investigative Site

    Kaohsiung City, 80756

  • Cardurion Investigative Site

    New Taipei City, 243

  • Cardurion Investigative Site

    Taichung, 407219

  • Cardurion Investigative Site

    Taipei, 100225

  • Cardurion Investigative Site

    Taipei, 10507

Other trials in Taiwan

Italy4 sites
  • Cardurion Investigative Site

    Bergamo

  • Cardurion Investigative Site

    Milan, 20138

  • Cardurion Investigative Site

    Naples

  • Cardurion Investigative Site

    Rozzano

Other trials in Italy

Australia3 sites
  • Cardurion Investigative Site

    Chermside, 4032

  • Cardurion Investigative Site

    Perth

  • Cardurion Investigative Site

    Southport, Queensland, 4222

Other trials in Australia

Czechia3 sites
  • Cardurion Investigative Site

    Hradec Králové, 500 02

  • Cardurion Investigative Site

    Hradec Králové, 500 05

  • Cardurion Investigative Site

    Prague, 128 08

Other trials in Czechia

Lithuania3 sites
  • Cardurion Investigative Site

    Kaunas

  • Cardurion Investigative Site

    Klaipėda

  • Cardurion Investigative Site

    Panevezys

Other trials in Lithuania

New Zealand2 sites
  • Cardurion Investigative Site

    Christchurch

  • Cardurion Investigative Site

    Dunedin

Other trials in New Zealand

Latvia1 site
  • Cardurion Investigative Site

    Riga

Other trials in Latvia

About this study

Official title: A Phase 2, Randomized, Double-Blind, Placebo-Controlled, Dose Finding Study to Assess the Safety and Effectiveness of Tovinontrine in Patients With Chronic Heart Failure With Reduced Ejection Fraction

The purpose of this study is to evaluate the safety and effectiveness of tovinontrine compared to placebo to lower NT-proBNP in patients with chronic heart failure with reduced ejection fraction.

Being tested
Tovinontrine (CRD-750), Placebo
Keywords
PDE9, PED9 Inhibitor, Heart Failure, CRD-750, Tovinontrine, HFrEF
Medical subject headings
Heart Failure, Cardiovascular Diseases, Heart Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Tovinontrine (CRD-750)Drug

    Tablets administered orally

  • PlaceboDrug

    Tablets administered orally

Study groups in NCT06215911
Study groupRoleWhat they receive
Tovinontrine (CRD-750) - low doseExperimentalNot described
Receives: Drug: Tovinontrine (CRD-750)
Tovinontrine (CRD-750) - medium doseExperimentalNot described
Receives: Drug: Tovinontrine (CRD-750)
Tovinontrine (CRD-750) - high doseExperimentalNot described
Receives: Drug: Tovinontrine (CRD-750)
PlaceboPlacebo comparatorNot described
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in biomarkers from Baseline to Week 12 - NT-proBNP by treatment group

    The percent change in plasma NT-proBNP from Baseline to Week 12.

    Measured: Baseline to Week 12

Secondary outcomes (10)
  1. Change in biomarkers at Week 12 - NT-proBNP

    The percent change in plasma NT-proBNP will be calculated from Baseline to Week 12. The correlation of plasma concentration with percent change in plasma NT-proBNP will be evaluated.

    Measured: Baseline to Week 12

  2. Change in biomarkers at week 12 by treatment group - cGMP

    The percent change in urine and plasma cGMP from Baseline to Week 12.

    Measured: Baseline to Week 12

  3. Change in biomarkers at week 12 by treatment group - BNP

    The percent change in BNP from Baseline to Week 12.

    Measured: Baseline to Week 12

  4. Change in the biomarker ratio at Week 12 - NT-proBNP

    The percent change in the urine and plasma cGMP to NT-proBNP ratio at week 12

    Measured: Baseline to Week 12

  5. Change in the biomarker ratio at Week 12 - BNP

    The percent change in the urine and plasma cGMP to BNP ratio from Baseline to Week 12

    Measured: Baseline to Week 12

  6. The change from baseline in the Kansas City Cardiomyopathy Questionnaire-23-Clinical Summary Score

    Scaled 0 to 100 where lower scores represent worse health status than higher scores

    Measured: Baseline to Week 12

  7. The change from baseline in the Kansas City Cardiomyopathy Questionnaire 23- Overall Summary Score

    Scaled 0 to 100 where lower scores represent worse health status than higher scores

    Measured: Baseline to Week 12

  8. The change from baseline in the Kansas City Cardiomyopathy Questionnaire-23-CSS - Categorical

    The proportion of patients with >=5, 10 and 20-point improvement in the KCCQ-23-CSS.

    Measured: Week 12

  9. New York Heart Association Classification

    Class I to IV are possible with a higher classification representing worsening heart failure status.

    Measured: Week 12

  10. Treatment Emergent Adverse Events (TEAEs)

    The number of participants with TEAEs including drug related AEs, serious AEs (SAEs), and AEs leading to study drug discontinuation.

    Measured: Baseline to Week 12

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted22 Jan 2024
  2. Study start13 Feb 2024
  3. Primary completion10 Oct 2025
  4. Study completion10 Oct 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
557 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06215911
Sponsor's protocol ID
CRD-750-201
Other IDs
2023-508736-62, 2023
Acronym
Cycle-1-REF
Status last verified
Aug 2026
First submitted
13 Dec 2023
Last updated
1 Sep 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Tovinontrine (CRD-750) in people with Heart Failure and Heart Failure With Reduced Ejection Fraction, run by Cardurion Pharmaceuticals, Inc. at 139 sites in 19 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 9 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 1 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 139 sites in United States, Poland, Bulgaria, United Kingdom, Belgium and 14 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in biomarkers from Baseline to Week 12 - NT-proBNP by treatment group (time frame: Baseline to Week 12). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Sep 2026.

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