E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Virus Diseases [C02] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10019763 |
E.1.2 | Term | Hepatitis delta |
E.1.2 | System Organ Class | 100000004862 |
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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 |
The primary objective of this study is to evaluate the efficacy of bulevirtide administered subcutaneously at a dose of 2 mg or 10 mg in combination with pegylated interferon alfa-2a once weekly relative to 10 mg bulevirtide monotherapy in subjects with chronic hepatitis delta. |
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E.2.2 | Secondary objectives of the trial |
To assess the safety of bulevirtide. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Provision of signed and dated informed consent form. 2. Male or female, aged 18-65 years (inclusive). 3. Positive serum HDV antibody results or PCR results for serum/ plasma HDV RNA for at least 6 months before Screening. 4. Positive PCR results for serum/ plasma HDV RNA at Screening. 5. Alanine transaminase level >1 x ULN, but less than 10 x ULN. 6. Serum albumin >2.8 g/L. 7. Thyroid stimulating hormone (TSH) within normal ranges (including on medication for control of thyroid function) 8. Negative urine pregnancy test for females of childbearing potential. 9. Inclusion criteria for female subjects: • Postmenopausal for at least 2 years, or • Surgically sterile (total hysterectomy or bilateral oophorectomy, bilateral tubal ligation, staples, or another type of sterilization), or • Abstinence from heterosexual intercourse throughout the treatment period, or • Willingness to use highly effective contraception (double barrier method or barrier contraception in combination with hormonal or intrauterine contraceptive) throughout the treatment period and for 6 months after the last dose of the study medication. 10. Male subjects must agree to use a highly effective contraception (double barrier method or barrier contraception in combination with hormonal or intrauterine contraceptive used by female partners) and not to donate sperm throughout the treatment period and for 6 months after the last dose of the study medication. |
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E.4 | Principal exclusion criteria |
1. Child-Pugh hepatic insufficiency score of B-C or over 6 points. NOTE: Child-Pugh hepatic insufficiency score of 6 points is allowed. Only patients with compensated cirrhosis are allowed. Uncomplicated oesophageal varices allowed; Subjects with current bleeding or ligation, or history of bleeding or ligation within the last 2 years are excluded. 2. HCV or HIV coinfection. Subjects with HCV antibodies can be enrolled, if screening HCV RNA test is negative. 3. Creatinine clearance < 60 mL/min as estimated using Cockcroft-Gault formula. 4. Total bilirubin ≥ 34.2 µmol/L. [Patients with higher total bilirubin values may be included after the consultation with the Study Medical Monitor, if such elevation can be clearly attributed to Gilbert’s syndrome associated with low-grade hyperbilirubinemia.] 5. Evidence of an active or suspected malignancy, or an untreated pre-malignancy disorder, or a history of malignancy within the last 5 years (with the exception of successfully treated carcinoma of the cervix in situ and successfully treated basal cell carcinoma and squamous cell carcinoma not less than 1 year prior to screening [and no more than 3 excised skin cancer within the last 5 years prior to screening]) or history of hepatic carcinoma. 6. Systemic connective tissue disorders. 7. NYHA (New York Heart Association) class III-IV congestive heart failure. 8. Patients with uncontrolled arterial hypertension: systolic blood pressure > 150 mm Hg and/ or diastolic blood pressure > 100 mm Hg at Screening. 9. Previous or unstable concurrent diseases or conditions that prevent subject’s enrolment into the study. 10. Patients with mental disorders or social circumstances that preclude them from following protocol requirements. 11. Current or previous decompensated liver disease, including coagulopathy, hepatic encephalopathy and esophageal varices hemorrhage. 12. One or more additional known primary or secondary causes of liver disease, other than hepatitis B (e.g., alcoholism, autoimmune hepatitis, malignancy with hepatic involvement, hemochromatosis, alpha-1 antitrypsin deficiency, Wilson’s Disease, other congenital or metabolic conditions affecting the liver, congestive heart failure or other severe cardiopulmonary disease, etc.). Gilbert’s syndrome, a benign disorder associated with low-grade hyperbilirubinemia, will not exclude patients from participation in this trial. Autoimmune hepatitis stigmata attributed to HDV infection in the opinion of the investigator are allowed. 13. White blood cells (WBC) count < 3000 cells/mm3 (<1500 if African patients). 14. Absolute neutrophil count < 1500 cells/mm3 (<1000 if African patients). 15. Platelet count < 90,000 cells/mm3. 16. Haemoglobin < 12 g/dL. 17. Use of prohibited psychotropic agents at Screening. 18. Use of interferons within 6 months before Screening. 19. History of solid organ transplantation. 20. Current alcohol abuse or alcohol abuse within 6 months prior to enrolment in this study; current drug addict or history of drug use within 2 years prior to Screening. 21. History of disease requiring regular use of systemic glucocorticosteroids (inhalative glucocorticosteroids are allowed) or other immunosuppressants. 22. Pregnant or breast-feeding females. 23. Participation in another clinical study with investigational drugs within 30 days prior to randomization. 24. Receipt of bulevirtide previously, e.g. in clinical trials. 25. Inability to follow protocol requirements and undergo all protocol procedures. NOTE: Patients with medical contraindication for liver biopsy are allowed to participate in this study. Such patients will exempt from liver biopsy requirements in this study. Patients receiving prohibited treatment at Screening cannot be included into the study unless this treatment is withdrawn prior to randomization. 26. Contraindications, intolerance or hypersensitivity to interferons alfa, genetically engineered E.coli medications, polyethylene glycol or other components of peginterferon alfa-2а. 27. Presence or history of severe retinopathy, significant diabetic or hypertensive retinopathy. 28. Uncontrolled diabetes mellitus. 29. Uncontrolled cardiovascular disorders within 6 months before screening. 30. History of autoimmune disorder (e.g. myositis, hepatitis, thrombotic thrombocytopenic purpura, idiopathic thrombocytopenic purpura, severe psoriasis, rheumatoid arthritis, interstitial nephritis, thyroiditis, and systemic lupus erythematosus) 31. Presence or history of significant psychiatric disorder (e.g. severe depression, suicide attempt, severe neurosis or cognitive disorder). 32. Presence or history of chronic lung disease with respiratory malfunction. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Sustained virological response 24 (SVR 24) defined as undetectable HDV RNA (HDV RNA <LoD) at week 24 after the scheduled end of treatment (study week 120 for arms B, C and D). |
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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) |
Secondary efficacy endpoints: • Undetectable HDV RNA at week 48 (all arms), 96 (arms B, C and D). • Combined sustained response at week 24 and 48 after the scheduled end of treatment where combined response is defined as fulfilment of two conditions simultaneously: - Undetectable HDV RNA or decrease by ≥ 2 log10 IU/ml from baseline. - ALT normalization • Sustained virological response 48 (SVR 48) defined as undetectable HDV RNA at week 48 after the scheduled end of treatment. • Change from baseline in liver stiffness as measured by elastography at week 48, 96, and 144. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
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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 | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | Yes |
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 | Yes |
E.8.1.1 | Randomised | Yes |
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 | Yes |
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) | Yes |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 4 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 9 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 14 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Moldova, Republic of |
Russian Federation |
France |
Romania |
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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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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 3 |
E.8.9.1 | In the Member State concerned months | 1 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 3 |
E.8.9.2 | In all countries concerned by the trial months | 5 |