Last updated on February 2018

Trial on Safety and Efficacy of Velmanase Alfa Treatment in Pediatric Patients With Alpha-Mannosidosis

Brief description of study

The main objectives of the study are to evaluate safety and efficacy of repeated treatment with recombinant human alfa-mannosidase of patients with alfa-mannosidosis aged less than 6 years

Detailed Study Description

The Primary endpoints of the study include:

  • Safety and tolerability of velmanase alfa as per Adverse events (AEs, including IRR), vital signs, laboratory parameters (hematology, biochemistry and urinanalysis)
  • Detection of anti-velmanase alfa antibodies and neutralizing/inhibitory antibodies

The Secondary endpoints include changes from baseline to 24 months for the following parameters. Efficacy outcomes:

  • Serum oligosaccharides
  • Functional capacity: Peabody Developmental Motor Scale - 2nd edition (PDMS-2) scores, Mullen's Scale of Early Learning (MSEL) scores, Bruininks-Oseretsky Test Of Motor Proficiency-2nd Edition (BOT-2), when applicable by age (from 4 years) or upon the judgment of the physician
  • Endurance: 3-Minute Stair Climb Test (3MSCT) and 6-Minute Walk Test (6MWT) in pediatric patients from 4 years of age, or when applicable according to the judgment of the physician, 2-Minute Walk Test (2MWT) in pediatric patients below 4 years of age, or when applicable according to the judgment of the physician
  • Hearing evaluation: Otoacoustic Emissions (OAE) testing, Automatic Auditory Brainstem Response (A-ABR) audiometry
  • Immunological profile, when applicable upon the judgment of the physician:
  • CSF biomarkers: Tau protein (Tau), Neurofilament Protein Light (NFL), Glial Fibrillary Acidic Protein (GFAp), Oligosaccharides
  • Assessment of quality of life via Questionnaire to parents
  • Assessment of mannose-rich oligosaccharides in brain tissue, MRI
  • Pharmacokinetic parameters

Clinical Study Identifier: NCT02998879

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Recruitment Status: Open

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