E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Late-onset Pompe disease (LOPD) in subjects receiving standard-of-care enzyme replacement therapy (ERT) |
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E.1.1.1 | Medical condition in easily understood language |
A change in the genetic material resulting in lower levels of an enzyme called acid alpha-glucosidase (GAA). The GAA enzyme helps the body to break down glycogen, a type of stored sugar. |
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E.1.1.2 | Therapeutic area | Diseases [C] - Congenital, Hereditary, and Neonatal Diseases and Abnormalities [C16] |
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 | 10075702 |
E.1.2 | Term | Pompe's disease late onset |
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 |
The purpose of the study is to evaluate changes in key clinical outcome measures (eg, motor, respiratory, fatigue) in adult subjects with late-onset Pompe disease (LOPD) receiving standard-of-care enzyme replacement therapy (alglucosidase alfa; ERT). Additionally, information gained may be used in the design and conduct of future studies in LOPD subjects |
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E.2.2 | Secondary objectives of the trial |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Subject has a diagnosis of Pompe disease based on documented deficiency of acid α-glucosidase (GAA) activity and a documented GAA mutation(s) (the gene that encodes GAA).
2. Male and female subjects between 18 years and 75 years, inclusive and >= 50kg.
3. Subject must provide signed informed consent prior to performing any study-related procedures.
4. Subject must be currently receiving standard-of-care ERT (alglucosidase alfa) at the recommended dose (approximately 20 mg/kg dose) every other week and for the past 2 years or more.
5. Subject must be able to perform pulmonary testing and muscle function testing in a seated position.
6. Subject must have an upright forced vital capacity (FVC) within 35 to 90% of predicted normal (NHANES III reference values), based on the higher of the screening or baseline value, if their 6 minute walk distance (6MWD) is > 200 m. Subject must have an upright FVC within 40 to 90% of predicted normal (NHANES III reference values), based on the higher of the screening or baseline value, if their 6MWD is ≤ 200 m. If FVC is between 80 and 90% of predicted normal, the subject may enter the study if the percent predicted FVC value drops by 10% predicted or more in supine position.
7. Subject is able to walk at least 100m in the 6MWT and the assessment is noted as valid. |
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E.4 | Principal exclusion criteria |
1. Subject has received any investigational therapy or pharmacological treatment for Pompe disease, other than alglucosidase alfa, within 30 days or 5 half lives, whichever is shorter, prior to the Baseline Visit or is anticipated to do so during the course of the study.
2. Subject is on any of the following prohibited medications within 30 days or 5 half lives, whichever is shorter, prior to baseline, or is anticipated to do so during the course of the study:
• miglitol (eg, Glyset)
• miglustat (eg, Zavesca)
• acarbose (eg, Precose, Glucobay)
• voglibose (eg, Volix, Vocarb, Volibo)
3. Subject requires use of invasive or non-invasive ventilatory support for > 6 hours a day while awake.
4. Subject has a medical or any other extenuating condition or circumstance that may, in the opinion of the investigator, pose an undue safety risk to the subject or compromise his/her ability to comply with protocol requirements. This includes clinical depression (as diagnosed by a psychiatrist or other mental health professional) with uncontrolled or poorly controlled symptoms.
5. Subject is breastfeeding, or is pregnant or planning to become pregnant within the next 2 years.
6. Other exclusion criteria according to the Lumizyme/Myozyme instructions for use. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Evaluation of changes in key clinical outcome measures (eg, motor, respiratory, fatigue) in adult late-onset Pompe disease (LOPD) subjects receiving standard-of-care enzyme replacement therapy (alglucosidase alfa; ERT). |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Parameters throughout the study. Historical data for these parameters will also be collected |
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E.5.2 | Secondary end point(s) |
Gained information gained may be used in the design and conduct of future studies in LOPD subjects. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Parameters throughout the study. Historical data for these parameters will also be collected |
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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 | No |
E.6.5 | Efficacy | No |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
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 | Yes |
E.6.13.1 | Other scope of the trial description |
Evaluation of disease-related characteristics of patients with LOPD, analyze predictors of response, and the change over time of disease-relevant measures including endurance, pulmonary function, motor function, muscle strength, patient-reported outcomes, and biomarkers of muscle injury and disease substrate. |
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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) | No |
E.7.4 | Therapeutic use (Phase IV) | Yes |
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 | Yes |
E.8.1.7.1 | Other trial design description |
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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.8.3 |
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 | 3 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 45 |
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 |
Australia |
Belgium |
Brazil |
Bulgaria |
Canada |
Denmark |
France |
Germany |
Hungary |
Italy |
Japan |
Korea, Democratic People's Republic of |
Netherlands |
Poland |
Romania |
Slovakia |
Spain |
Sweden |
Taiwan |
United Kingdom |
United States |
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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 | 1 |
E.8.9.1 | In the Member State concerned months | 3 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 3 |
E.8.9.2 | In all countries concerned by the trial days | 0 |