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 | 10010331 - Congenital, familial and genetic disorders |
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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.
-The patient (and patient's legal guardian if patient is legally minor as defined by local regulation) must have the ability to comply with the clinical protocol.
-The patient, if female and of childbearing potential, must have a negative pregnancy test (beta-human chorionic gonadotropin) at baseline.
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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 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
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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.8.4.1 | Number of sites anticipated in Member State concerned | 1 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 36 |
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 |
Colombia |
Switzerland |
Taiwan |
Brazil |
Canada |
Japan |
Korea, Republic of |
Mexico |
Russian Federation |
United Kingdom |
United States |
Austria |
Belgium |
Czechia |
Denmark |
France |
Germany |
Italy |
Netherlands |
Spain |
Sweden |
Türkiye |
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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 |