Experimental drug shows promise for stiff heart disease
NCT ID NCT05442047
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested an experimental drug called NNC6019-0001 in 105 people with transthyretin amyloid cardiomyopathy, a condition where abnormal proteins build up in the heart, causing heart failure. Participants received either the drug or a placebo by infusion every 4 weeks for about 64 weeks. The goal was to see if the drug could improve walking distance and reduce markers of heart strain.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- NNC6019-0001 (an experimental drug given by infusion)
- What this could lead to
- If it works, this could point toward a new treatment to manage heart failure symptoms in people with ATTR amyloid cardiomyopathy.
- What could go wrong
- This is an early Phase 2 trial with only 105 participants, so results may not apply to everyone. The drug is still experimental and not yet approved.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
-
105 people
The number who actually took part.
- Started
-
Aug 2022
- Finished
-
May 2025
- Lead sponsor
-
A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 85 years
- Sex
-
Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Male or female. * Age greater than or equal to (\>=) 18 to less than (\<) 85 years at the time of signing informed consent. * Have an established diagnosis of Transthyretin amyloid cardiomyopathy (ATTR CM) with either wild-type transhyretin (TTR) or hereditary transthyretin (TTR) genotype as per local standards. * Expected to be on stable doses of cardiovascular medical therapy 6 weeks prior to the randomisation visit. * Known end-diastolic interventricular septal wall thickness greater than or equal to (\>=) 12 millimeters (mm). * Presently classified as New York Heart Association (NYHA) Class II-III. * N-terminal-pro brain natriuretic peptide (NT-proBNP) concentration greater than or equal to (\>=) 650 picograms per milliliter (pg/mL) in sinus cardiac rhythm and greater than (\>) 1000 pg/mL in atrial fibrillation at screening. * Completed greater than or equal to (\>=) 150 meters to less than or equal to (\<=) 450 meters on the 6-minute walk test (MWT) at screening. * Estimated glomerular filtration rate (eGFR) greater than or equal to (\>=) 25 milliliter per minute per 1.73 meter square (mL/min/1.73 m\^2) at screening. Exclusion Criteria: * Cardiomyopathy not primarily caused by transthyretin amyloid cardiomyopathy transthyretin amyloid cardiomyopathy (ATTR CM), for example, cardiomyopathy due to hypertension, valvular heart disease, or ischemic heart disease. * A prior solid organ transplant. * Planned solid organ transplant during the study. * Presence or history of malignant neoplasm (other than basal or squamous cell skin cancer, insitu carcinomas of the cervix, or in-situ/high grade prostatic intraepithelial neoplasia (PIN) or low-grade prostate cancer) within 5 years before screening. * Current treatment with calcium channel blockers with conduction system effects (example \[e.g.\], verapamil, diltiazem). The use of dihydropyridine calcium channel blockers is allowed. The use of digoxin will only be allowed if required for management of atrial fibrillation with rapid ventricular response. * Acute coronary syndrome, unstable angina, stroke, transient ischemic attack (TIA), coronary revascularization, cardiac valve repair, or major surgery within 3 months of screening. * Body weight \>120 kilogram (kg) (264.6 pounds \[lb\]) at screening. * History of contrast allergy or adverse reactions to gadolinium-containing agents.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Transthyretin amyloid cardiomyopathy (attr-CM) are added.
Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Ap-Hp-Hopital Henri Mondor
Créteil, 94000, France
-
Cedars-Sinai Medical Center_Los Angeles
Beverly Hills, California, 90211, United States
-
Centre Hospitalier Universitaire de Toulouse-Hopital Rangueil
Toulouse, 31059, France
-
Centre Hospitalier Universitaire de Toulouse-Hopital Rangueil-1
Toulouse Cedex 9 TSA 50032, 31059, France
-
Centro per lo Studio e la Cura delle Amiloidosi Sistemiche Fondazione IRCCS Policlinico San Matteo
Pavia, PV, 27100, Italy
-
Ctr for Cardiovascular Innovation
Vancouver, British Columbia, V5Z 1M9, Canada
-
Fondazione Toscana Gabriele Monasterio - Dipartimento Cardiotoracico - UOC Cardiologia e Medicina Cardiovascolare
Pisa, Pi, 56124, Italy
-
Hiroshima University hospital, Cardiovascular Medicine
Hiroshima, 734-8551, Japan
-
Hiroshima University hospital_Cardiovascular Medicine
Hiroshima, 734-8551, Japan
-
Hospital Universitario Puerta de Hierro Majadahonda
Majadahonda, Madrid, 28222, Spain
-
Hospital Universitario Puerta de Hierro Majadahonda
Madrid, 28222, Spain
-
Hospital da Senhora da Oliveira - Guimarães
Guimarães, 4835-044, Portugal
-
Hospital of the University of Occupational and Environmental Health
Fukuoka, 807-8556, Japan
-
Hospital of the University of Occupational and Environmental Health, Cardiology, Nephrology
Fukuoka, 807-8556, Japan
-
II. interni klinika VFN - Kardiologie a angiologie
Prague, 12808, Czechia
-
Kumamoto University Hospital, Cardiovascular Medicine
Kumamoto-shi, Kumamoto, 860-8556, Japan
-
LMU Klinikum München Klinik und Poliklinik 1
München, 81377, Germany
-
Mayo Clinic Arizona
Phoenix, Arizona, 85054, United States
-
Mayo Clinic Jacksonville
Jacksonville, Florida, 32224, United States
-
Mayo Clinic Rochester
Rochester, Minnesota, 55905, United States
-
NW Univ-Bluhm Cardiovasc Inst
Evanston, Illinois, 60208, United States
-
Nagasaki University Hospital, Cardiovascular Medicine
Nagasaki, 852-8501, Japan
-
Okayama University Hospital_Cardiovascular Medicine
Okayama-shi, Okayama, 700-8558, Japan
-
Oregon Hlth Sci Univ-Portland
Portland, Oregon, 97239-4501, United States
-
Shinshu University Hospital, Department of Neurology
Nagano, 390-8621, Japan
-
Stanford Hlth Cre-Boswell Clin
Stanford, California, 94305, United States
-
ULS De Tras-Os-Montes E Alto Douro E.P.E. - Unidade Hospitalar de Vila Real
Vila Real, 5000-508, Portugal
-
ULS Do Alto Ave, E.P.E. - Hospital Senhora da Oliveira - Guimarães
Guimarães, 4835-044, Portugal
-
UMC Groningen
Groningen, 9713 GZ, Netherlands
-
UMC Groningen afdeling Cardiologie
Groningen, 9713 GZ, Netherlands
-
Unidade Local de Saude do Alto Ave, E.P.E.
Guimarães, 4835-044, Portugal
-
UniklinikHeidelberg - Innere Med. III - Kardiologie, Angiologie, Pneumologie
Heidelberg, 69120, Germany
-
Univ of MD Schl of Med
Baltimore, Maryland, 21201, United States
-
Universitair Medisch Centrum Utrecht
Utrecht, 3584 CX, Netherlands
-
Universitatsklinikum Wurzburg AöR
Würzburg, 97078, Germany
-
Universitatsklinikum Würzburg - Zentrum für Herzinsuffizienz
Würzburg, 97078, Germany
-
University of Calgary_Cardiology
Calgary, Alberta, T2N 4Z6, Canada
-
University of Maryland School of Medicine
Baltimore, Maryland, 21201, United States
-
Universitätsklinikum Münster - Klinik für Kardiologie I
Münster, 48149, Germany
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a new infusion slow a heart disease caused by protein clumps?
- Can acoramidis improve daily life for heart amyloidosis patients?
- New drug duo aims to stop rare heart disease in its tracks
- Can a smartphone app keep heart patients out of the hospital? new study aims to find out.
- New heart drug acoramidis tested in Real-World setting
- New drug aims to cut heart deaths in rare heart condition