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Ikke-interventionel undersøgelse af patienter med transthyretin (ATTR) amyloidose (MaesTTRo)

22. september 2026 opdateret af: AstraZeneca

En ikke-interventionel, prospektiv, multi-lande undersøgelse, der indsamler data fra den virkelige verden om karakteristika, behandlingsmønstre og resultater af patienter med transthyretin (ATTR) amyloidose

The MaesTTRo study aims to enroll a global cohort of patients with transthyretin (ATTR) amyloidosis to longitudinally observe the natural course of the disease and describe real-world treatment patterns and outcomes. In addition, information on the effectiveness of ATTR amyloidosis treatments, including eplontersen, which is a ligand-conjugated antisense oligonucleotide gene silencing treatment targeting activity against both the mutant and wild-type TTR protein, will be collected.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

MaesTTRo is an international, longitudinal, non-interventional study of adult patients with transthyretin (ATTR) amyloidosis.

The study plans to enroll a minimum of 1850 patients with ATTR amyloidosis, including a minimum of 850 patients with ATTR cardiomyopathy (ATTR-CM), and a minimum of 100 patients with ATTRv-PN hereditary polyneuropathy.

The enrollment period is expected to last approximately 4 years. The duration of follow-up for each patient will be at least 3 years and up to 7 years depending on the date when the patient is enrolled.

This study design will include both primary and secondary data. Primary data will consist of patient-reported outcome (PRO) questionnaires. Patients will be asked to complete electronic PRO questionnaires at enrollment and every 6 months (±3 months) only during routine visits. Secondary data will consist of demographic, clinical, and treatment information, and will be collected as per routine clinical practice. These data will be abstracted directly from the electronic health record or review of paper charts for each patient and entered in the electronic data capture system. No site visits are required for this study, and patients will not be contacted for data collection outside of routine clinic visits.

For patients enrolled in the United States, a tokenization process (creation of a unique, encrypted identifier called a token, in place of personal identifiable information) will be used to collect additional de-identified data (e.g., healthcare resource use, healthcare costs) from other sources that are part of patients' routine medical care (electronic medical, hospital, or pharmacy records). Only de-identified data will be analyzed. Patients will be given a choice within the informed consent form to opt in or opt out of participating in the tokenization process.

Undersøgelsestype

Observationel

Tilmelding (Anslået)

1850

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Canada
    • British Columbia
      • Vancouver, British Columbia, Canada, V5Z 1M9
        • Rekruttering
        • Research Site
      • Vancouver, British Columbia, Canada, V6Z 1Y6
        • Rekruttering
        • Research Site
    • Nova Scotia
      • Halifax, Nova Scotia, Canada, B3RIV9
        • Rekruttering
        • Research Site
    • Ontario
      • London, Ontario, Canada, N6A 5A5
        • Rekruttering
        • Research Site
      • Toronto, Ontario, Canada, M2J 4W8
        • Rekruttering
        • Research Site
    • Quebec
      • Montreal, Quebec, Canada, H2X 0A9
        • Ikke rekrutterer endnu
        • Research Site
      • Rimouski, Quebec, Canada, G5L 5T1
        • Ikke rekrutterer endnu
        • Research Site
  • Det Forenede Kongerige
      • Glasgow, Det Forenede Kongerige, G51 4TF
        • Rekruttering
        • Research Site
      • London, Det Forenede Kongerige, NW3 2QG
        • Rekruttering
        • Research Site
    • West Midlands
      • Birmingham, West Midlands, Det Forenede Kongerige, B15 2GW
        • Rekruttering
        • Research Site
  • Forenede Stater
    • California
      • La Jolla, California, Forenede Stater, 92037
        • Rekruttering
        • Research Site
      • Los Angeles, California, Forenede Stater, 90095
        • Rekruttering
        • Research Site
      • San Francisco, California, Forenede Stater, 94143
        • Rekruttering
        • Research Site
      • San Francisco, California, Forenede Stater, 94025
        • Rekruttering
        • Research Site
    • Connecticut
      • New Haven, Connecticut, Forenede Stater, 06510
        • Rekruttering
        • Research Site
    • District of Columbia
      • Washington D.C., District of Columbia, Forenede Stater, 20010
        • Rekruttering
        • Research Site
    • Illinois
      • Chicago, Illinois, Forenede Stater, 60637
        • Rekruttering
        • Research Site
    • Indiana
      • Indianapolis, Indiana, Forenede Stater, 06200
        • Rekruttering
        • Research Site
    • Maryland
      • Baltimore, Maryland, Forenede Stater, 21218
        • Rekruttering
        • Research Site
    • Massachusetts
      • Boston, Massachusetts, Forenede Stater, 02111
        • Rekruttering
        • Research Site
      • Boston, Massachusetts, Forenede Stater, 02114
        • Ikke rekrutterer endnu
        • Research Site
      • Boston, Massachusetts, Forenede Stater, 02115
        • Rekruttering
        • Research Site
    • Minnesota
      • Rochester, Minnesota, Forenede Stater, 55905
        • Rekruttering
        • Research Site
    • Missouri
      • Kansas City, Missouri, Forenede Stater, 64111
        • Rekruttering
        • Research Site
      • St Louis, Missouri, Forenede Stater, 63110
        • Rekruttering
        • Research Site
    • New Jersey
      • New Brunswick, New Jersey, Forenede Stater, 08901
        • Rekruttering
        • Research Site
    • New York
      • Manhasset, New York, Forenede Stater, 11030
        • Rekruttering
        • Research Site
      • New York, New York, Forenede Stater, 10029
        • Rekruttering
        • Research Site
      • New York, New York, Forenede Stater, 10016
        • Ikke rekrutterer endnu
        • Research Site
      • New York, New York, Forenede Stater, 10027
        • Rekruttering
        • Research Site
    • North Carolina
      • Durham, North Carolina, Forenede Stater, 27710
        • Rekruttering
        • Research Site
    • Oregon
      • Portland, Oregon, Forenede Stater, 97239
        • Rekruttering
        • Research Site
    • Pennsylvania
      • Danville, Pennsylvania, Forenede Stater, 17822
        • Rekruttering
        • Research Site
      • Philadelphia, Pennsylvania, Forenede Stater, 19104
        • Rekruttering
        • Research Site
      • Philadelphia, Pennsylvania, Forenede Stater, 19107
        • Rekruttering
        • Research Site
    • South Carolina
      • Greenville, South Carolina, Forenede Stater, 29607
        • Rekruttering
        • Research Site
    • Tennessee
      • Germantown, Tennessee, Forenede Stater, 38138
        • Rekruttering
        • Research Site
      • Nashville, Tennessee, Forenede Stater, 037214
        • Rekruttering
        • Research Site
    • Texas
      • Dallas, Texas, Forenede Stater, 75246
        • Rekruttering
        • Research Site
      • Houston, Texas, Forenede Stater, 77030
        • Ikke rekrutterer endnu
        • Research Site
    • Virginia
      • Richmond, Virginia, Forenede Stater, 23298
        • Rekruttering
        • Research Site
    • Washington
      • Seattle, Washington, Forenede Stater, 98915
        • Rekruttering
        • Research Site
    • Wisconsin
      • Milwaukee, Wisconsin, Forenede Stater, 53226
        • Rekruttering
        • Research Site
  • Kina
    • Anhui
      • Hefei, Anhui, Kina, 230001
        • Ikke rekrutterer endnu
        • Research Site
    • Beijing Municipality
      • Beijing, Beijing Municipality, Kina, 100191
        • Rekruttering
        • Research Site
      • Beijing, Beijing Municipality, Kina, 100730
        • Rekruttering
        • Research Site
      • Beijing, Beijing Municipality, Kina, 100034
        • Rekruttering
        • Research Site
      • Beijing, Beijing Municipality, Kina, 100029
        • Rekruttering
        • Research Site
    • Chongqing Municipality
      • Chongqing, Chongqing Municipality, Kina, 400000
        • Rekruttering
        • Research Site
    • Fujian
      • Fuzhou, Fujian, Kina, 350005
        • Ikke rekrutterer endnu
        • Research Site
      • Xiamen, Fujian, Kina, 361016
        • Rekruttering
        • Research Site
    • Guangdong
      • Guangzhou, Guangdong, Kina, 510515
        • Rekruttering
        • Research Site
      • Guangzhou, Guangdong, Kina, 510080
        • Rekruttering
        • Research Site
    • Guizhou
      • Guiyang, Guizhou, Kina, 550004
        • Ikke rekrutterer endnu
        • Research Site
    • Hebei
      • Shijiazhuang, Hebei, Kina, 050000
        • Ikke rekrutterer endnu
        • Research Site
    • Hubei
      • Wuhan, Hubei, Kina, 430000
        • Rekruttering
        • Research Site
      • Wuhan, Hubei, Kina, 430030
        • Rekruttering
        • Research Site
    • Hunan
      • Changsha, Hunan, Kina, 410013
        • Rekruttering
        • Research Site
      • Changsha, Hunan, Kina, 410011
        • Rekruttering
        • Research Site
    • Jiangsu
      • Nanjing, Jiangsu, Kina, 210029
        • Rekruttering
        • Research Site
      • Suzhou, Jiangsu, Kina, 215006
        • Ikke rekrutterer endnu
        • Research Site
    • Jiangxi
      • Nanchang, Jiangxi, Kina, 330000
        • Rekruttering
        • Research Site
    • Liaoning
      • Dalian, Liaoning, Kina, 116011
        • Ikke rekrutterer endnu
        • Research Site
    • Shandong
      • Jinan, Shandong, Kina, 250012
        • Rekruttering
        • Research Site
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, Kina, 200040
        • Rekruttering
        • Research Site
      • Shanghai, Shanghai Municipality, Kina, 200025
        • Rekruttering
        • Research Site
      • Shanghai, Shanghai Municipality, Kina, 200031
        • Rekruttering
        • Research Site
    • Shanxi
      • Taiyuan, Shanxi, Kina, 030001
        • Ikke rekrutterer endnu
        • Research Site
    • Sichuan
      • Chengdu, Sichuan, Kina, 610041
        • Rekruttering
        • Research Site
      • Chengdu, Sichuan, Kina, 610072
        • Rekruttering
        • Research Site
    • Xi'An
      • Shaanxi, Xi'An, Kina, 710061
        • Rekruttering
        • Research Site
    • Zhejiang
      • Hangzhou, Zhejiang, Kina, 310009
        • Ikke rekrutterer endnu
        • Research Site
  • Spanien
    • Andalusia
      • Huelva, Andalusia, Spanien, 21005
        • Rekruttering
        • Research Site
    • Basque Country
      • Bilbao, Basque Country, Spanien, 48013
        • Rekruttering
        • Research Site
    • Canary Islands
      • Las Palmas de Gran Canaria, Canary Islands, Spanien, 35010
        • Rekruttering
        • Research Site
    • Castille and León
      • Salamanca, Castille and León, Spanien, 37007
        • Rekruttering
        • Research Site
    • Catalu A
      • Barcelona, Catalu A, Spanien, 08035
        • Rekruttering
        • Research Site
      • Barcelona, Catalu A, Spanien, 8036
        • Ikke rekrutterer endnu
        • Research Site
      • Cataluna, Catalu A, Spanien, 08907
        • Ikke rekrutterer endnu
        • Research Site
    • Madrid
      • Majadahonda, Madrid, Spanien, 28222
        • Rekruttering
        • Research Site
    • Palma de Mallorca
      • Islas Baleares, Palma de Mallorca, Spanien, 07198
        • Rekruttering
        • Research Site
  • Tyskland
      • Berlin, Tyskland, 10117
        • Rekruttering
        • Research Site
    • Bavaria
      • Würzburg, Bavaria, Tyskland, DE-97072
        • Ikke rekrutterer endnu
        • Research Site
    • Hesse
      • Frankfurt am Main, Hesse, Tyskland, 60590
        • Rekruttering
        • Research Site
    • Lower Saxony
      • Hanover, Lower Saxony, Tyskland, 30625
        • Rekruttering
        • Research Site
    • North Rhine-Westphalia
      • Aachen, North Rhine-Westphalia, Tyskland, 52074
        • Rekruttering
        • Research Site
      • Cologne, North Rhine-Westphalia, Tyskland, 50937
        • Rekruttering
        • Research Site
    • Rhineland-Palatinate
      • Mainz, Rhineland-Palatinate, Tyskland, 55131
        • Rekruttering
        • Research Site
    • Saarland
      • Homburg, Saarland, Tyskland, 66421
        • Rekruttering
        • Research Site

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 130 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Patients with a diagnosis of amyloid transthyretin (ATTR) amyloidosis

Beskrivelse

Inclusion Criteria:

  • Patient willing and able to provide written informed consent to participate in the study
  • Confirmed diagnosis of amyloid transthyretin (ATTR) amyloidosis
  • Aged ≥18 years at the time of signing the informed consent
  • Patient willing and able to participate in collection of electronic patient reported outcomes (PROs)

Exclusion Criteria:

  • Concurrent participation in any interventional trial for ATTR amyloidosis
  • Involvement in the planning and/or conduct of the current study
  • Patients with evidence of primary or light chain amyloidosis (AL) or serum protein A amyloidosis (AA)
  • Asymptomatic patients with ATTR amyloidosis and asymptomatic ATTR mutation carriers

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Observationsmodeller: COHORT
  • Tidsperspektiver: PROSPECTIVE

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
ATTR cardiomyopathy (ATTR-CM)

Patients with ATTR-CM at enrollment
Medicin: Treatment of transthyretin (ATTR) amyloidosis in observational study setting

Data will be collected on patients with ATTR amyloidosis in a real-world setting
Hereditary polyneuropathy (ATTRv-PN)

Patients with ATTRv-PN at enrollment
Medicin: Treatment of transthyretin (ATTR) amyloidosis in observational study setting

Data will be collected on patients with ATTR amyloidosis in a real-world setting
ATTR-Mixed

Patients with a mixed ATTR amyloidosis phenotype
Medicin: Treatment of transthyretin (ATTR) amyloidosis in observational study setting

Data will be collected on patients with ATTR amyloidosis in a real-world setting

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Demographic characteristics (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years
  • Age
  • Sex as determined by the investigator (male/female)
  • Race and ethnicity, where allowed
From time of enrollment for up to 7 years
Treatment patterns (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address this objective, the following treatments will be assessed:

  • ATTR amyloidosis treatment: Tafamidis, Diflunisal, Acoramidis, Vutrisiran, Patisiran, Inotersen, Eplontersen, Doxycycline and taurodesoxycholic acid, Liver transplant
  • Heart failure/arrhythmia-related treatment: Diuretics, Angiotensin converting enzyme inhibitor, Angiotensin receptor blocker, Angiotensin receptor-neprilysin inhibitor, Anticoagulation, Beta-blockers, Sodium-glucose co-transporter-2 inhibitor, Mineralocorticoid receptor antagonist, Digoxin, Pacemaker use, Implantable cardioverter-defibrillator, Left ventricular assist device, Cardiac transplant, Transcatheter aortic valve replacement, Surgical aortic valve replacement
  • Polyneuropathy-related treatment: Antiepileptics (gabapentin, pregabalin, carbamazepine, phenytoin), Antidepressants, Topical pain treatments, Opioids, Tetrahydrocannabinol
  • Other: Medications for gastrointestinal symptoms, Vitamin A supplementation, Dialysis
From time of enrollment for up to 7 years
Clinical characteristics (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address this objective, the following clinical characteristics will be assessed:

  • Modified body mass index (mBMI)
  • Medical history
  • TTR genetic test results
  • Family history of ATTR
  • Time period between the first symptoms to date of diagnosis of ATTR
  • Time since diagnosis of ATTR
From time of enrollment for up to 7 years
Findings from biopsy (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address this objective, the following biopsy information will be collected:

  • Type of biopsy
  • Amyloid identification result (Positive, Negative, Inconclusive for amyloid)
  • Method of amyloid typing
  • Result of the biopsy (Normal/Abnormal)
  • Reason for considering the biopsy result abnormal
From time of enrollment for up to 7 years
Findings from Cardiovascular magnetic resonance imaging (CMR) (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address this objective, the following information will be collected: extracellular volume (ECV), contrast use, left ventricular (LV) end-diastolic volume, LV end-systolic volume, LV ejection fraction, LV Mass Index, interventricular wall thickness, right ventricular Free Wall Thickness, LV Free Wall Thickness, left Atrial Volume Index, native T1 mapping, CMR result (Normal/Abnormal), reason for considering the result abnormal.
From time of enrollment for up to 7 years
Findings from Bone tracer cardiac scintigraphy (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address this objective, the following information will be collected: Type of tracer, Heart to contralateral lung ratio (H/CL), Perugini grade, scintigraphy result (Normal/Abnormal), reason for considering the result abnormal.
From time of enrollment for up to 7 years
Findings from Echocardiography (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address this objective, the following information will be collected: LV ejection fraction, LV End Diastolic Volume, LV End Systolic Volume LV End Diastolic Dimension, LV End Systolic Dimension, Interventricular Septal Thickness End Diastole, Posterial Wall Thickness End Diastole, Left Ventricular Mass Index, Left Atrial Volume, Left Atrial Volume Index, Mitral valve regurgitation, Aortic valve regurgitation, Tricuspid valve regurgitation, Pulmonic valve regurgitation, LV Outflow Gradient, Stroke Volume, Lateral early diastolic myocardial velocity (e' lateral), Medial early diastolic myocardial velocity (e' medial), Mitral E/e' Ratio, Early diastolic mitral inflow velocity (E), Late diastolic mitral inflow velocity (A), Mitral Peak E/A Ratio, Global LV longitudinal strain, Pulmonary artery systolic pressure, RV Free Wall Thickness Severity of Aortic stenosis, Severity of Mitral stenosis.
From time of enrollment for up to 7 years
ECG variables (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address this objective, the following ECG information will be collected:

  • Interpretation of the ECG (Normal/Abnormal/Borderline)
  • Heart rhythm
  • Presence of extrasystoles
  • Presence of conduction abnormalities
  • Evidence of left ventricular hypertrophy (LVH)
From time of enrollment for up to 7 years
Sural nerve and tibial nerve amplitude (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

Sural nerve and tibial nerve amplitude will be measured in overall and in patients initiating a treatment with eplontersen
From time of enrollment for up to 7 years
Biomarker results (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address this objective, the following biomarker results will be collected:

  • Serum TTR levels
  • Complete blood count
  • Hemoglobin
  • Troponin I
  • Cystatin
  • Creatinine
  • Reported glomerular filtration rate (GFR)
  • Albumin
  • Liver enzymes: alkaline phosphatase (ALP), alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyl transferase (GGT), total bilirubin
  • N-terminal pro B-type natriuretic peptide (NT-proBNP)
  • Vitamin A level
  • Neurofilament light chain (NfL)
  • International normalized ratio (INR) test
From time of enrollment for up to 7 years
Urine test results (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address this objective, the following test results will be collected:

  • Urine albumin-creatinine ratio (UACR)
  • Urine protein creatinine ratio (UPCR)
From time of enrollment for up to 7 years
Clinical manifestations (signs and symptoms) of ATTR amyloidosis (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address this objective, the following clinical manifestations will be assessed:

ischemic heart disease, acute myocardial infarction, heart failure, atrial fibrillation, arrhythmias, conduction system disease, aortic valve stenosis polyneuropathy, carpal tunnel syndrome, autonomic neuropathy, nephrotic syndrome, subnephrotic proteinuria, gastrointestinal dysfunction, chronic kidney disease / acute kidney injury, spinal stenosis, spinal stenosis surgery, hepatomegaly, ascites, oedema, other amyloidosis related manifestations (e.g., Popeye's sign, tendon rupture)
From time of enrollment for up to 7 years
36-Item Short Form Health Survey Version 2 (SF-36v2) Physical Component Summary score (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

The SF-36v2 is a 36-item, generic health survey that provides scores for eight health domains (physical functioning, role-physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health) and two summary scores; the physical component summary (PCS) score and the mental component summary (MCS) score. Higher scores indicate a better health state.
From time of enrollment for up to 7 years
Norfolk Quality of Life-Diabetic Neuropathy total score (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

The Norfolk QOL-DN is a 35-item, disease-specific instrument that provides scores for five domains (symptoms, large fiber neuropathy, small fiber neuropathy, autonomic neuropathy, and activities of daily living) and a total score. Higher scores indicate a worse health state.
From time of enrollment for up to 7 years
Kansas City Cardiomyopathy Questionnaire (KCCQ) overall summary score (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

The KCCQ is a 23-item, disease-specific questionnaire that assesses seven domains (physical limitations, symptom stability, symptom frequency, symptom burden, self-efficacy, quality of life, and social limitation) and provides three summary scores (total symptom score, clinical summary score, and overall summary score). Higher scores indicate a better health state.
From time of enrollment for up to 7 years
New York Heart Association (NYHA) classification (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

I=No symptoms; II=Symptoms with ordinary physical activity; III=Symptoms with less than ordinary physical activity; IV=Symptoms at rest.
From time of enrollment for up to 7 years
National Amyloidosis Centre (NAC) ATTR staging or Mayo staging (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

For NAC staging, Stage I: N-terminal pro-brain natriuretic peptide (NT-proBNP) ≤3000 ng/L and estimated glomerular filtration rate (eGFR) ≥45 ml/min; Stage III: NT-proBNP >3000 ng/L and eGFR <45 ml/min; Stage IV:NT-proBNP ≥10,000 ng/L; Stage II: remainder of patients

For Mayo staging, Stage I: Both and biomarker values are below the established thresholds; Stage II: Either troponin T or NT-proBNP is above the threshold; Stage III: Both troponin T and NT-proBNP biomarker values are above the threshold.

Biomarker Thresholds: Troponin T: >0.05 mg/mL and NT-proBNP: >3000 pg/mL.
From time of enrollment for up to 7 years
Familial amyloid polyneuropathy (FAP) (Coutinho) staging (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

Stage 0: No symptoms; Stage I: Unimpaired ambulation; mostly mild sensory, motor and autonomic neuropathy in the lower limbs; Stage II: Assistance with ambulation required, mostly moderate impairment progression to the lower limbs, upper limbs, and trunk; Stage III: Wheelchair-bound or bedridden; severe sensory, motor, and autonomic involvement of all limbs.
From time of enrollment for up to 7 years
Polyneuropathy disability (PND) score (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

Stage 0=No symptoms; Stage I=Sensory disturbances but preserved walking capabilities; Stage II=Impaired walking capacity, but ability to walk without a stick or crutches; Stage IIIA=Walking with help of 1 stick or crutch; Stage IIIB=Walking with the help of 2 sticks or crutches; Stage IV=confined to wheel chair or bedridden.
From time of enrollment for up to 7 years
Left Ventricular Ejection Fraction (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

Left Ventricular Ejection Fraction will be measured in overall and in patients initiating a treatment with eplontersen
From time of enrollment for up to 7 years
6-minute walk test (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

To address this objective, the distance walked in 6 minutes will be measured.
From time of enrollment for up to 7 years
Charlson comorbidity index (CCI) and CCI components (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address CCI, most recent score and all CCI componenet will be measured

  • Myocardial infarction
  • Congestive heart failure
  • Peripheral vascular disease
  • Cerebrovascular disease
  • Dementia
  • Chronic pulmonary disease
  • Rheumatic disease
  • Peptic ulcer disease
  • Diabetes (None, Without chronic complications, With chronic complications)
  • Hemiplegia or paraplegia
  • Renal disease
  • Any malignancy, including lymphoma and leukemia, except malignant neoplasm of skin (None, Localized, Metastatic)
  • Liver disease (None, Mild, Moderate, Severe)
  • Metastatic solid tumor
  • Acquired immune deficiency syndrome (AIDS) / Human immunodeficiency virus (HIV)
From time of enrollment for up to 7 years
Other comorbidities of interest (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address this objective, the following information will be collected:

  • Percentage of patients with depression
  • Percentage of patients with fibromyalgia
  • Percentage of patients with paraproteinemia
From time of enrollment for up to 7 years
Healthcare resource utilization (overall and in patients initiating a treatment with eplontersen)
Tidsramme: From time of enrollment for up to 7 years

In order to address this objective, the following information will be collected:

  • Number of emergency department visits
  • Number of outpatient visits
  • Inpatient care/hospitalization general ward (non-intensive): number of inpatient stays, number of bed days
  • Inpatient care/hospitalization intensive ward: number of inpatient stays, number of bed days
From time of enrollment for up to 7 years
Mortality (overall and in patients initiating a treatment with eplontersen)
Tidsramme: Throughout study follow-up (up to 7 years)

Mortality during study follow-up (all-cause, related to ATTR amyloidosis), overall and by NYHA/NAC or Mayo/FAP stage
Throughout study follow-up (up to 7 years)
Liver Disease and Live Transplant
Tidsramme: From time of Enrollment for up to 7 Years
  • Liver disease (for patients with mild, moderate or severe liver disease: Child Pugh score, Child Pugh class, ascites, encephalopathy)
  • Liver transplantation (reason for transplant, type of transplant)
From time of Enrollment for up to 7 Years

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Comparison of demographic and clinical characteristics of patients prescribed eplontersen at any time during the observation period to patients on other ATTR treatments
Tidsramme: Up to 7 years

The following outcomes will be compared between patients treated with eplontersen and patients on other ATTR treatments:

  • Demographics
  • mBMI
  • Medical history
  • Family history of ATTR amyloidosis
  • Time period between the first symptoms to date of diagnosis of ATTR amyloidosis
  • Time since diagnosis of ATTR amyloidosis
Up to 7 years
Comparison of findings from biopsy in patients prescribed eplontersen at any time during the observation period to patients on other ATTR treatments
Tidsramme: Up to 7 years

The following outcomes will be compared between patients treated with eplontersen and patients on other ATTR treatments:

  • Type of biopsy
  • Amyloid identification result (Positive, Negative, Inconclusive for amyloid)
  • Method of amyloid typing
  • Result of the biopsy (Normal/Abnormal)
  • Reason for considering the biopsy result abnormal
Up to 7 years
Comparison of findings from Cardiovascular magnetic resonance imaging (CMR) in patients prescribed eplontersen at any time during the observation period to patients on other ATTR treatments
Tidsramme: Up to 7 years

The following outcomes will be compared between patients treated with eplontersen and patients on other ATTR treatments: extracellular volume (ECV), contrast use, left ventricular (LV) end-diastolic volume, LV end-systolic volume, LV ejection fraction, LV Mass Index, interventricular wall thickness, right ventricular Free Wall Thickness, LV Free Wall Thickness, left Atrial Volume Index, native T1 mapping, CMR result (Normal/Abnormal), reason for considering the result abnormal.
Up to 7 years
Comparison of findings from Echocardiography in patients prescribed eplontersen at any time during the observation period to patients on other ATTR treatments
Tidsramme: Up to 7 years

The following outcomes will be compared between patients treated with eplontersen and patients on other ATTR treatments: LV ejection fraction, LV End Diastolic Volume, LV End Systolic Volume LV End Diastolic Dimension, LV End Systolic Dimension, Interventricular Septal, Thickness Diastole, Posterial Wall Thickness Diastole, Left Ventricular Mass Index, Left Atrial Volume, Left Atrial Volume Index, Mitral valve regurgitation, Aortic valve regurgitation, Tricuspid valve regurgitation, Pulmonic valve regurgitation, LV Outflow Gradient, Stroke Volume, Lateral early diastolic myocardial velocity (e' lateral), Medial early diastolic myocardial velocity (e' medial), Mitral E/e' Ratio, Early diastolic mitral inflow velocity (E), Late diastolic mitral inflow velocity (A), Mitral Peak E/A Ratio, Global LV longitudinal strain, Pulmonary artery systolic pressure, RV Free Wall Thickness Severity of Aortic stenosis, Severity of Mitral stenosis.
Up to 7 years
Comparison of ECG variables of patients prescribed eplontersen at any time during the observation period to patients on other ATTR treatments
Tidsramme: Up to 7 years

The following outcomes will be compared between patients treated with eplontersen and patients on other ATTR treatments:

  • Interpretation of the ECG (Normal/Abnormal/Borderline)
  • Heart rhythm
  • Presence of extrasystoles
  • Presence of conduction abnormalities
  • Evidence of left ventricular hypertrophy (LVH)
Up to 7 years
Comparison of findings from Bone tracer cardiac scintigraphyin patients prescribed eplontersen at any time during the observation period to patients on other ATTR treatments
Tidsramme: Up to 7 years

The following outcomes will be compared between patients treated with eplontersen and patients on other ATTR treatments: Type of tracer, Heart to contralateral lung ratio (H/CL), Perugini grade, scintigraphy result (Normal/Abnormal), reason for considering the result abnormal.
Up to 7 years
Comparison of sural nerve and tibial nerve amplitude in patients prescribed eplontersen at any time during the observation eriod to patients on other ATTR treatments
Tidsramme: Up to 7 years

Sural nerve and tibial nerve amplitude will be compared in patients prescribed eplontersen at any time during the observation period to patients on other ATTR treatments
Up to 7 years
Comparison of biomarker results in patients prescribed eplontersen at any time during the observation eriod to patients on other ATTR treatments
Tidsramme: Up to 7 years

The following outcomes will be compared between patients treated with eplontersen and patients on other ATTR treatments:

  • Serum TTR levels
  • Complete blood count
  • Hemoglobin
  • Troponin I
  • Cystatin
  • Creatinine
  • Reported glomerular filtration rate (GFR)
  • Albumin
  • Liver enzymes: alkaline phosphatase (ALP), alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyl transferase (GGT), total bilirubin
  • N-terminal pro B-type natriuretic peptide (NT-proBNP)
  • Vitamin A level
  • Neurofilament light chain (NfL)
  • International normalized ratio (INR) test
Up to 7 years
Comparison of urine test results in patients prescribed eplontersen at any time during the observation eriod to patients on other ATTR treatments
Tidsramme: Up to 7 years

The following outcomes will be compared between patients treated with eplontersen and patients on other ATTR treatments:

  • Urine albumin-creatinine ratio (UACR)
  • Urine protein creatinine ratio (UPCR)
Up to 7 years
Comparison of Clinical manifestations (signs and symptoms) of ATTR amyloidosis in patients prescribed eplontersen to patients on other ATTR treatments
Tidsramme: Up to 7 years

The following outcomes will be compared between patients treated with eplontersen and patients on other ATTR treatments: ischemic heart disease, acute myocardial infarction, heart failure, atrial fibrillation, arrhythmias, conduction system disease, aortic valve stenosis polyneuropathy, carpal tunnel syndrome, autonomic neuropathy, nephrotic syndrome, subnephrotic proteinuria, gastrointestinal dysfunction, chronic kidney disease / acute kidney injury, spinal stenosis, spinal stenosis surgery, hepatomegaly, ascites, oedema, other amyloidosis related manifestations (e.g., Popeye's sign, tendon rupture)
Up to 7 years
Comparison of 36-Item Short Form Health Survey Version 2 (SF-36v2) Physical Component Summary score in patients prescribed eplontersen to patients on other ATTR treatments
Tidsramme: Up to 7 years

SF-36v2, physical component summary scores will be compared between patients treated with eplontersen and patients on other ATTR treatments.
Up to 7 years
Comparison of Norfolk Quality of Life-Diabetic Neuropathy total score in patients prescribed eplontersen to patients on other ATTR treatments
Tidsramme: Up to 7 years

Norfolk Quality of Life-Diabetic Neuropathy total scores will be compared between patients treated with eplontersen and patients on other ATTR treatments.
Up to 7 years
Comparison of Kansas City Cardiomyopathy Questionnaire (KCCQ) overall summary score in patients prescribed eplontersen to patients on other ATTR treatments
Tidsramme: Up to 7 years

Kansas City Cardiomyopathy Questionnaire (KCCQ) overall summary score will be compared in patients prescribed eplontersen to patients on other ATTR treatments
Up to 7 years
Comparison of New York Heart Association (NYHA) classification in patients prescribed eplontersen to patients on other ATTR treatments
Tidsramme: Up to 7 years

New York Heart Association (NYHA) classification will be compared in patients prescribed eplontersen to patients on other ATTR treatments
Up to 7 years
Comparison of Familial amyloid polyneuropathy (FAP) (Coutinho) staging in patients prescribed eplontersen to patients on other ATTR treatments
Tidsramme: Up to 7 years

FAP staging:

Stage 0: No symptoms; Stage I: Unimpaired ambulation; mostly mild sensory, motor and autonomic neuropathy in the lower limbs; Stage II: Assistance with ambulation required, mostly moderate impairment progression to the lower limbs, upper limbs, and trunk; Stage III: Wheelchair-bound or bedridden; severe sensory, motor, and autonomic involvement of all limbs.
Up to 7 years
Comparison of Left Ventricular Ejection Fraction in patients prescribed eplontersen to patients on other ATTR treatments
Tidsramme: Up to 7 years

Left Ventricular Ejection Fraction will be compared in patients prescribed eplontersen to patients on other ATTR treatments
Up to 7 years
Comparison of Charlson comorbidity index (CCI) and CCI components in patients prescribed eplontersen to patients on other ATTR treatments
Tidsramme: Up to 7 years

Charlson comorbidity index (CCI) and CCI components will be compared in patients prescribed eplontersen to patients on other ATTR treatments
Up to 7 years
Comparison of other comorbidities of interest in patients prescribed eplontersen to patients on other ATTR treatments
Tidsramme: Up to 7 years

The following outcomes will be compared between patients treated with eplontersen and patients on other ATTR treatments:

  • Percentage of patients with depression
  • Percentage of patients with fibromyalgia
  • Percentage of patients with paraproteinemia
Up to 7 years
Comparison of healthcare resource utilization in patients prescribed eplontersen to patients on other ATTR treatments
Tidsramme: Up to 7 years

The following outcomes will be compared between patients treated with eplontersen and patients on other ATTR treatments:

  • Number of emergency department visits
  • Number of outpatient visits
  • Inpatient care/hospitalization general ward (non-intensive): number of inpatient stays, number of bed days
  • Inpatient care/hospitalization intensive ward: number of inpatient stays, number of bed days
Up to 7 years
Comparison of mortality in patients prescribed eplontersen to patients on other ATTR treatments
Tidsramme: Up to 7 years

Mortality will be compared in patients prescribed eplontersen to patients on other ATTR treatments
Up to 7 years

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Risk factors for worsening ATTR progression
Tidsramme: up to 7 years

Factors associated with changes in clinical manifestations of ATTR amyloidosis, NYHA classification, NAC ATTR staging or Mayo staging, FAP (Coutinho) staging, PND score, LVEF, CCI and CCI components, and other comorbidities of interest will be identified.
up to 7 years
Healthcare costs in patients with ATTR amyloidosis
Tidsramme: Up to 7 years

Average annual costs will be calculated based on available data in the different countries.
Up to 7 years
Serious adverse events in patients treated with ATTR amyloidosis treatments
Tidsramme: Up to 7 years

Serious adverse events in patients treated with ATTR amyloidosis treatments will be measured
Up to 7 years

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

AstraZeneca

Samarbejdspartnere

ICON plc

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

25. juni 2024

Primær færdiggørelse (Anslået)

31. december 2031

Studieafslutning (Anslået)

31. december 2031

Datoer for studieregistrering

Først indsendt

13. maj 2024

Først indsendt, der opfyldte QC-kriterier

13. juni 2024

Først opslået (Faktiske)

20. juni 2024

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

23. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

22. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • D8450R00003

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

Plan to share only the redacted CSR synopsis

IPD-delingstidsramme

AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA/PhRMA Data-Sharing Principles. For details of our timelines, please refer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

IPD-delingsadgangskriterier

When a request has been approved AstraZeneca will provide access to the anonymized individual patient-level data via secure research environment Vivli.org. A Signed Data Usage Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information.

IPD-deling Understøttende informationstype

  • CSR

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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