E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Pompe disease (acid alpha-glucosidase deficiency) |
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E.1.1.1 | Medical condition in easily understood language |
Treatment of enzyme deficiency in glycogen storage disease type II (Pompe disease)
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E.1.1.2 | Therapeutic area | Diseases [C] - Nutritional and Metabolic Diseases [C18] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 24.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10036143 |
E.1.2 | Term | Pompe's disease |
E.1.2 | System Organ Class | 100000004850 |
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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 |
To determine the effect of avalglucosidase alfa treatment on respiratory muscle strength measured by percent predicted forced vital capacity (% FVC) in the upright position, as compared to alglucosidase alfa. |
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E.2.2 | Secondary objectives of the trial |
To determine the safety and effect of avalglucosidase alfa treatment on functional endurance (6-minute walk test [6MWT], inspiratory muscle strength (maximum inspiratory pressure [MIP]), expiratory muscle strength (maximum expiratory pressure [MEP]), lower extremity muscle strength (hand-held dynamometry [HHD]), motor function (Quick Motor Function Test [QMFT]), and health-related quality of life (SF-12).
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
-The patient has confirmed GAA enzyme deficiency from any tissue source and/or 2 confirmed GAA gene mutations. -The patient must provide signed, informed consent prior to performing any study related procedures. Consent of a legally authorized guardian(s) is (are) required for legally minor patients as defined by local regulation. If the patient is legally minor, signed written consent shall be obtained from parent(s)/legal guardian and assent obtained from patients, if applicable. |
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E.4 | Principal exclusion criteria |
-The patient is <3 years of age. -The patient has known Pompe specific cardiac hypertrophy. -The patient is wheelchair dependent. -The patient is not able to ambulate 40 meters (approximately 130 feet) without stopping and without an assistive device. -The patient requires invasive-ventilation (non-invasive ventilation is allowed). -The patient is not able to successfully perform repeated forced vital capacity (FVC) measurements in upright position of ≥30% predicted and ≤85% predicted. -The patient (and patient’s legal guardian if patient is legally minor as defined by local regulation) is (are) not able to comply with the clinical protocol. -The patient has had previous treatment with alglucosidase alfa or any investigational therapy for Pompe disease. -The patient has prior or current use of immune tolerance induction therapy - The patient, if female and of childbearing potential, has a positive pregnancy test (beta-human chorionic gonadotropin) at baseline. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Change from baseline in percent predicted forced vital capacity (%FVC) in upright position |
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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 from baseline in six-minute walk test scores
- Change from baseline in maximal inspiratory pressure in upright position
- Change from baseline in maximal expiratory pressure in upright position
- Change from baseline in hand-held dynamometry measurement
- Change from baseline in Quick Motor Function Test scores
- Change from baseline in 12- Item Short-form health survey scores
- Number of participants with adverse events
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
- Baseline to 49 weeks
- Baseline to 49 weeks
- Baseline to 49 weeks
- Baseline to 49 weeks
- Baseline to 49 weeks
- Baseline to 49 weeks
- Baseline to 49 weeks and up to 6 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 | Yes |
E.6.12 | Pharmacoeconomic | Yes |
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) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
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) | Yes |
E.8.2.2 | Placebo | No |
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 | No |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 50 |
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 |
Argentina |
Australia |
Brazil |
Canada |
Colombia |
Japan |
Korea, Republic of |
Mexico |
Taiwan |
United States |
Austria |
France |
Poland |
Sweden |
Bulgaria |
Netherlands |
Spain |
Switzerland |
Czechia |
Germany |
Italy |
Belgium |
Denmark |
Portugal |
Russian Federation |
Turkey |
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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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 8 |
E.8.9.1 | In the Member State concerned months | |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 8 |