E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Patients with cardiac amyloidosis. |
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E.1.1.1 | Medical condition in easily understood language |
Patients with cardiac amyloidosis. |
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E.1.1.2 | Therapeutic area | Diseases [C] - Cardiovascular Diseases [C14] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
Primary objective: Assess impact of dapagliflozin on NT-proBNP levels in patients with optimally treated cardiac ATTR amyloidosis |
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E.2.2 | Secondary objectives of the trial |
The secondary objectives of this study are: • determine whether dapagliflozin reduces patient-reported HF symptoms in patients with optimally treated cardiac ATTR amyloidosis. • assess whether dapagliflozin improves walking distance at 6MWT in patients with cardiac ATTR amyloidosis
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
Inclusion criteria: • Established diagnosis of ATTRv or ATTRwt amyloidosis verified by either: 1. Tissue biopsy with ATTR amyloid deposits OR 2. DPD scintigraphy with Perugini scale grade II or III cardiac uptake and absence of monoclonal bands in serum and urine electrophoresis and normal free light chain assay ruling out AL amyloidosis. • Clinical diagnosis of HF according to ESC criteria for diagnosing HF with symptoms of heart failure and a left ventricular ejection fraction of <50%, or echocardiographic signs of diastolic dysfunction according to ESC criteria. • NYHA-class II-IV • Intraventricular septum diameter >12 mm • DPD scintigraphy uptake in the myocardium Perugini scale grade II or III • Optimal treated and stable HF and ATTR amyloidosis for at least four weeks, according to the treating physician. • Genetic testing is performed on all patients to determine diagnosis of ATTRwt or ATTRv • Age ≥ 18 • TTE performed withing 12 months of screening visit. • Women of Childbearing Capacity (WOCBC) must comply to use of highly effective contraception methods during the trial. Acceptable methods according to CTFG guidelines are combined hormonal contraception (oral, dermal, intravaginal), progesterone-only hormonal contraception associated with inhibition of ovulation (oral, injectable, implantable), an intrauterine device, an intrauterine hormone-releasing system or by refraining from heterosexual intercourse during the entire period of risk.
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E.4 | Principal exclusion criteria |
Exclusion criteria: 1. Expected survival < 9 months 2. Estimated glomerular filtration rate <25 ml/ min 3. Karnofsky performance status <60% 4. Diabetes mellitus treated with insulin or sulfonylureas 5. Acute cardiac hospitalization or procedure within 4 weeks (HF hospitalization, myocardial infarction, pacemaker implantation, cardioversion, coronary angioplasty) 6. Participation in other clinical trial not approved for co-enrollment 7. Inability or unwillingness to comply with the study requirements 8. Current SGLT2-inhibitor use or previous discontinuation due to side effects 9. History of ketoacidosis 10. Systolic blood pressure <90 mmHg 11. Uncontrolled hypertension 12. Severe hepatic impairment, unstable or rapidly progressing hepatic disease at the time of randomization as judged by the investigator.
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary endpoint is change in level or slope of NTproBNP during the treatment period compared to the non-treatment periods. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
• Change in Kansas City Cardiomyopathy Questionnaire total symptom score during the treatment period compared to the non-treatment period • Change in 6-minute walking distance during the treatment period compared to the non-treatment period • Safety endpoints: -Blood pressure -Diuretic intake -Any patient-reported side effect during treatment period with dapagliflozin .
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
KCCQ - 3 times per period 6 MWT - 3 times per period |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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Last visit of the last subject undergoing the trial |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | 0 |