E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Centronuclear myopathies (CNMs) in patients ≥ 16 years of age with mutations in DNM2 or MTM1 |
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E.1.1.1 | Medical condition in easily understood language |
Centronuclear myopathies (CNMs) in patients ≥ 16 years of age with mutations in DNM2 or MTM1 |
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E.1.1.2 | Therapeutic area | Diseases [C] - Nervous System Diseases [C10] |
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 assess the safety and tolerability of 3 single ascending dose (SAD) levels and 3 multiple ascending dose (MAD) levels of DYN101 |
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E.2.2 | Secondary objectives of the trial |
• To assess the pharmacokinetics (PK) of SAD and MAD of DYN101.
• To explore target engagement in muscle of DYN101.
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Male or female aged ≥ 16 years on the date of signing the main ICF.
2. Have a documented mutation in DNM2 or MTM1.
3. Meet the following laboratory criteria at screening:
• Platelet count > 150,000/µL,
• Normal kidney function, as determined by values of blood urea nitrogen, creatinine, cystatin C, and estimated glomerular filtration rate within normal laboratory reference ranges,
• Normal liver function, as determined by values of alanine and aspartate aminotransferase, gamma glutamyltransferase, and bilirubin within normal laboratory reference ranges.
4. Have a symptomatic CNM in the opinion of the investigator, at least mild to moderately affected, i.e. showing clinical symptoms in at least 2 of the domains that will be investigated in this trial (respiratory, muscle strength and function, dysphagia), and be ambulatory, i.e. being able to walk 10 steps, if needed with support/assisted. If a subject is non-ambulatory but highly functioning in the view of the investigator, he/she may be included following discussion with the sponsor.
5. Have an understanding, ability and willingness to fully comply with visit frequency, trial procedures and restrictions, including contraceptive requirements.
6. Able to provide written, signed and dated informed consent/assent to participate in the trial. Parental consent (one or both parents) and an assent for subjects < 18 years may be required per local legislation.
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E.4 | Principal exclusion criteria |
1. Have clinical, laboratory or ultrasound evidence of liver disease.
Note: Liver ultrasound at screening is mandatory for MTM1 subjects.
2. Presence of significant co-morbidities or conditions other than CNM or clinically significant findings during screening of medical history, physical examination, laboratory testing, vital signs or ECG recording for which, in the opinion of the investigator and the medical monitor, participation would not be in the best interest of the subject (e.g. compromise the safety or well-being) or that could prevent, limit, or confound the protocol-specified assessments (e.g. taking a muscle biopsy).
3. For female subjects of child-bearing potential: pregnant or breastfeeding, or planning to become pregnant during the trial.
4. Have a body weight of <34 kg.
5. Current or past abuse of alcohol or recreational/narcotic drugs (with the exception of caffeine and nicotine), which in the investigator’s opinion would compromise the subject’s safety and/or compliance with the trial procedures.
6. Currently enrolled in another investigational trial or scheduled to participate in another trial whilst participating in this trial.
7. Current or relevant history of physical or psychiatric illness, any medical disorder that may require treatment or make the subject unlikely to fully complete the trial, or any condition that presents undue risk from the IMP or procedures.
8. Intake of any disallowed therapies as noted in the protocol within 12 weeks before the planned first IMP administration.
9. Known or suspected intolerance or hypersensitivity to IMP ingredients or closely-related compounds, or history of a significant allergic reaction to IMP ingredients as determined by the investigator, such as anaphylaxis requiring hospitalization.
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E.5 End points |
E.5.1 | Primary end point(s) |
To determine safety and tolerability of SAD and MAD of DYN101, assessed by the number and severity of AEs and SAEs reported from signing of the main ICF onwards until the last trial visit |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
All visits from baseline to W25 visit and safety follow up call 3 months after last dose |
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E.5.2 | Secondary end point(s) |
• To determine PK parameters of DYN101 in plasma following SAD and MAD of DYN101.
• To assess effects of DYN101 (including DNM2 mRNA levels and DYN101 concentration) in muscle biopsies.
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Blood PK: SAD part: Pre-dose (0h), 30 min post start of infusion, 1h, 2h, 4h, 8h, 24h, 48h and 168h post-dose then 2 weeks, 4 weeks, 8 weeks, 12 weeks and 16 weeks post-dose
MAD W1 - Pre-dose (0h), 30 min post start of infusion, 1h, 2h, 4h, 8h, 24h, 48h, 72h ( 72h timepoint pre-loading dose) and 168h post-dose
MAD W12 - Pre-dose, 30 min post start of infusion, 1h, 2h, 4h, 8h, 24h, 48h, 72h and 168h post-dose of Week 12, Day 1
MAD W25 - 168h post-dose of Week 24*
Muscle Biopsies:
2 time points: At SAD baseline (or at MAD baseline for replaced subjects who did not participate in SAD) and At the end of the 12 weeks MAD part (W13) |
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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 | No |
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 | Yes |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | Yes |
E.7.1.1 | First administration to humans | Yes |
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.8.2.4 | Number of treatment arms in the trial | 3 |
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 | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 10 |
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 | 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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last visit of the last subject |
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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 | 2 |
E.8.9.1 | In the Member State concerned days | 0 |
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 | 2 |
E.8.9.2 | In all countries concerned by the trial days | 0 |