E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
alpha-Mannosidosis is an inborn error of metabolism. |
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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 | 17.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10032658 |
E.1.2 | Term | Other specified disorders of carbohydrate transport and metabolism |
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 overall objective is to evaluate the long-term efficacy of Lamazym i.v. treatment in patients with alpha-Mannosidosis previously enrolled in Lamazym trials and currently receiving the treatment according to the AfterCare Program.
The primary objective of the trial is to evaluate the impact of the long-term treatment with Lamazym upon the level of biomarker oligosaccharides in serum and upon the endurance as measured by the change from baseline in the number of steps climbed in 3 minutes (3MSCT).
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E.2.2 | Secondary objectives of the trial |
As secondary objectives, the long term efficacy of Lamazym will be investigated upon endurance as measured by the change from baseline in the number of meters walked in six minutes (6MWT), upon pulmonary function, motor proficiency by BOT-2 and hearing capability by audiometry. In addition, cognitive development will be assessed by Leiter-R test. CNS involvement will be evaluated with MRI/MRS (for patients who previously participated in rhLAMAN-02 trial), CSF biomarkers (Tau, NFL, GFAp) and CSF biomarkers oligosaccharides. Clearance of oligosaccharides in urine will be measured. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. The subject must have participated in the phase 1 trial (EudraCT number: 2010-022084-36), phase 2a trial (EudraCT number: 2010-022085-26), phase 2b trial (EudraCT number: 2011-004355-40) or phase 3 trial (EudraCT number: 2012-000979-17)
2. The subject must still be receiving weekly intravenous infusions of Lamazym according to the AfterCare Program
3. The Subject or subjects legally authorized guardian(s) must provide signed, informed consent prior to performing any trial-related activities
4. The subject and his/her guardian(s) must have the ability to comply with the protocol |
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E.4 | Principal exclusion criteria |
1. History of bone marrow transplantation
2. Presence of known clinically significant cardiovascular, hepatic, pulmonary or renal disease or other medical conditions that, in the opinion of the Investigator, would preclude participation in the trial. Subjects unable to perform the motor tests independently from support are permitted to participate in the trial and will be evaluated for the remnant non motor endpoints
3. Any other medical condition or serious intercurrent illness, or extenuating circumstance that, in the opinion of the investigator, would preclude participation in the trial
4. Pregnant and/or lactating women cannot participate in the trial. Concerning women of child bearing potential (WOCBP), the investigators will decide whether or not there is a need for contraception. This assessment will be done through interviews with the patient and parents.
5. Participation in other interventional trials testing IMP, including rhLAMAN-07 (EudraCT number: 2013-000336-97) and rhLAMAN-09 (EudraCT number: 2013-000321-31) trials with Lamazym
6. Pause of the IMP for 2 consecutive weeks during the last month. Subjects are allowed to be re-screened |
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E.5 End points |
E.5.1 | Primary end point(s) |
• Oligosaccharides in serum
• 3 Minute Stair Climb Test (3MSCT)
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Endpoints assessed at one evaluation visit only. |
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E.5.2 | Secondary end point(s) |
Clinical parameters:
• 6 Minute Walk Test (6MWT)
• Pulmonary function (FVC, FEV1, PEF)
• Functional capacity according to Bruininks-Oseretsky test of Motor Proficiency (BOT-2)
• Pure Tone Audiometry (PTA)
Cognitive ability:
• Equivalence age measured by Leiter R
CNS parameters:
• Assessment of mannose-rich oligosaccharides in brain tissue as measured by MRS visual score (for patients who previously participated in rhLAMAN-02), MRI diffusion coefficient in white matter, gray matter and centrum semi oval
• Cerebrospinal fluid neuro-degeneration biomarkers (Tau, NFL, GFAp)
• Oligosaccharides in CSF
Additional laboratory:
• Drug exposure by PK sampling profile on plasma
• Oligosaccharides in urine
• Measurement of in vivo biological activity
Quality of life based on questionnaires filled by the subject’s guardian, will be evaluated by:
• CHAQ
• EQ-5D-5L
Safety Endpoints:
• Development of adverse events
• Development of clinically significant changes in vital signs and change in physical examination
• Development of clinically significant changes in the clinical laboratory parameters (hematology, biochemistry and urinalysis)
• Development of rhLAMAN antibodies and neutralizing/inhibitory antibodies. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Endpoints assessed at one evaluation visit only. |
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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) | 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 | 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.8.3 |
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 | No |
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 | 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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Last patient last visit (EOT) = when all patients have completed the evaluation visit. The EOT visit for the individual patient will be performed after the completion of the evaluation visit, before the patient leaves the trial site. |
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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 | |
E.8.9.1 | In the Member State concerned months | 6 |
E.8.9.1 | In the Member State concerned days | |