E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Facioscapulohumeral muscular dystrophy (FSHD) |
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E.1.1.1 | Medical condition in easily understood language |
FSHD is a group of heritable diseases that cause degeneration of muscle and progressive weakness, in which the muscles of the face, shoulder blades, and upper arms are among the most affected. |
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E.1.1.2 | Therapeutic area | Diseases [C] - Musculoskeletal Diseases [C05] |
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 |
• To evaluate the pharmacodynamic effects of RO7204239 compared with placebo, using magnetic resonance imaging (MRI) • To evaluate the safety of RO7204239 compared with placebo
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E.2.2 | Secondary objectives of the trial |
• To evaluate additional pharmacodynamic effects of RO7204239 compared to placebo, using serum samples and MRI • To evaluate pharmacokinetics (PK) parameters for RO7204239 • To evaluate immune response to RO7204239
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
• Age >=18 and <=65 years at the time of signing the Informed Consent Form • Genetic confirmation of FSHD1 or FSHD2 • Clinical findings consistent with FSHD according to the investigator’s clinical judgment • Ability to walk unassisted 10 meters (Timed 10-Meter Walk Test [10MWT]) • Ricci Clinical Severity Scale score ≥2.5 and ≤ 4 • Agreement to maintain the same frequency and intensity of physiotherapy, occupational therapy, and other forms of exercise during the clinical study • Ability and willingness to comply with the study protocol and to complete all study procedures, measurements, and visits • For female participants of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraception, during treatment with study drug and for 17 months after the final dose of RO7204239 • For male participants: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive methods, and agree to refrain from donating sperm, during treatment with study drug and for 4 months after the final dose of RO7204239 |
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E.4 | Principal exclusion criteria |
• Pregnancy or breastfeeding, or intention of becoming pregnant during the study or within 17 months after the final dose of RO7204239 • Current or previous treatment (or receipt) of anti-myostatin therapies • Treatment with any investigational therapy within 90 days prior to screening, or 5 drug-elimination half-lives of the drug, whichever is longer • Contraindications to MRI scans, difficulties maintaining a prolonged supine position, or any other clinical history or examination finding that would pose a potential hazard in combination with MRI • Presence of clinically significant ECG abnormalities from average of triplicate measurement at screening indicating a safety risk for participants • Presence of clinically significant cardiovascular disease indicating a safety risk for participants • Presence of clinically significant abnormal findings in echocardiography at screening, with the exception of mitral valve prolapse, which does not exclude participants from the study • Any major illness within 1 month before screening • Ascertained or presumptive hypersensitivity to RO7204239, or to the constituents of its formulation • Concurrent disease or a medical condition or abnormality in clinical laboratory tests that could interfere with, or treatment of which might interfere with, the conduct of the study, or that would pose an unacceptable risk to the participant in this study • History of malignancy • Any clinically relevant history of anaphylactic reaction requiring inotropic support • Any abnormal skin conditions, pigmentation, or lesions in the area intended for SC injection (abdomen) and that would prevent visualization of potential injection-site reactions to RO7204239 • Immobilization, surgical procedures, fracture, or trauma to the upper or lower limbs within 90 days prior to screening or longer, if judged by the investigator that it may affect motor function assessment • Any planned surgery that may affect a participant’s motor function assessment, including participants who have had surgery of scapular fixation within the 12 months preceding screening or that are planned during the study • Substance abuse within 12 months prior to screening or are at risk of substance abuse per investigator’s judgment • Use of the following medications within 90 days prior to enrollment: – Salbutamol or another β2-adrenergic agonist taken orally – Creatine – Recombinant human growth hormone – Recombinant human insulin growth factor-1 – Testosterone, oxandrolone or other anabolic steroid – Chronic oral or parenteral use of corticosteroids (inhaled corticosteroid use is allowed) unless required to manage injection reactions – Agents anticipated to increase or decrease muscle volume or strength |
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E.5 End points |
E.5.1 | Primary end point(s) |
1. Percent change from baseline in contractile muscle volume (CMV) of quadriceps femoris muscles, as assessed by MRI bilaterally 2. Incidence, severity, and causal relationship of adverse events, with severity determined according to National Cancer Institute Common Terminology Criteria for Adverse Events v5.0 3. Change from baseline in vital signs, physical findings, ECG, echocardiogram, and clinical laboratory results 4. Incidence of local and systemic injection reactions 5. Incidence of abnormal laboratory findings 6. Incidence of abnormal ECG parameters 7. Incidence of abnormal echocardiographic parameters 8. Incidence of abnormal vital signs |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
1. At Week 52 2-8. Up to approximately 2.5 years
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E.5.2 | Secondary end point(s) |
1. Change from baseline in serum concentrations of total and free latent myostatin, and mature myostatin 2. Percent change from baseline in CMV of 36 muscles based on whole body MRI (excluding muscles with severe fat replacement) 3. Change from baseline in fat fraction of 36 muscles based on whole body MRI (excluding muscles with severe fat replacement) 4. Percent change from baseline in CMV of quadriceps femoris muscles, as assessed by MRI bilaterally, at Week 28 of treatment 5. Change from baseline in fat fraction of quadriceps femoris muscles, as assessed by MRI bilaterally 6. Percent change from baseline in CMV of tibialis anterior muscles, as assessed by MRI bilaterally 7. Change from baseline in fat fraction of tibialis anterior muscles, as assessed by MRI bilaterally 8. Percent change from baseline in CMV of biceps brachii muscles, as assessed by MRI bilaterally 9. Change from baseline in fat fraction of biceps brachii muscles, as assessed by MRI bilaterally 10. Percent change from baseline in the contractile cross-sectional area (CSA) of skeletal muscle in the proximal lower limb muscles, as assessed by MRI bilaterally 11. Change from baseline in the fat fraction of proximal lower limb muscles, as assessed at a single mid femur slice by MRI bilaterally 12. Serum concentrations of RO7204239 at specified timepoints 13. Cmax of RO7204239 at specified timepoints 14. Area under the concentration-time curve (AUC) of RO7204239 at specified timepoints 15. Ctrough of RO7204239 at specified timepoints 16. Prevalence of anti-drug antibodies (ADAs) at baseline and incidence of ADAs during the study |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
1. Through 2 years 2-3. At Weeks 28 and 52 4. At Week 28 5-11. At Weeks 28 and 52 12-15. Through 2 years 16. Baseline up to approximately 2 years
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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 | Yes |
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 | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
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) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
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 | Information not present in EudraCT |
E.8.4.1 | Number of sites anticipated in Member State concerned | 1 |
E.8.5 | The trial involves multiple Member States | No |
E.8.5.1 | Number of sites anticipated in the EEA | 3 |
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 |
United States |
Denmark |
Italy |
United Kingdom |
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E.8.7 | Trial has a data monitoring committee | Yes |
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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The end of this study is defined as the date of the last visit of the last participant in the study or the date at which the last data point required for statistical analysis (i.e., for the final analysis) or safety follow-up is received from the last participant in the study, whichever occurs later. |
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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 | 2 |
E.8.9.1 | In the Member State concerned months | 11 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 11 |