RT Journal Article T1 Comprehensive long-term efficacy and safety of recombinant human alpha-mannosidase (velmanase alfa) treatment in patients with alpha-mannosidosis. A1 Lund, Allan M A1 Borgwardt, Line A1 Cattaneo, Federica A1 Ardigo, Diego A1 Geraci, Silvia A1 Gil-Campos, Mercedes A1 De Meirleir, Linda A1 Laroche, Cecile A1 Dolhem, Philippe A1 Cole, Duncan A1 Tylki-Szymanska, Anna A1 Lopez-Rodriguez, Monica A1 Guillen-Navarro, Encarna A1 Dali, Christine I A1 Heron, Benedicte A1 Fogh, Jens A1 Muschol, Nicole A1 Phillips, Dawn A1 Van den Hout, J M Hannerieke A1 Jones, Simon A A1 Amraoui, Yasmina A1 Harmatz, Paul A1 Guffon, Nathalie K1 Alpha-mannosidosis K1 Enzyme replacement therapy K1 Integrated analysis K1 Lysosomal storage disorder K1 Recombinant human alpha-mannosidase K1 Velmanase alfa AB Long-term outcome data provide important insights into the clinical utility of enzyme replacement therapies. Such data are presented for velmanase alfa in the treatment of alpha-mannosidosis (AM). Patient data (n = 33; 14 adults, 19 paediatric) from the clinical development programme for velmanase alfa were integrated in this prospectively-designed analysis of long-term efficacy and safety. Patients who participated in the phase I/II or phase III trials and were continuing to receive treatment after completion of the trials were invited to participate in a comprehensive evaluation visit to assess long-term outcomes. Primary endpoints were changes in serum oligosaccharide and the 3-minute stair climb test (3MSCT). Mean (SD) treatment exposure was 29.3 (15.2) months. Serum oligosaccharide levels were significantly reduced in the overall population at 12 months (mean change: -72.7%, P  Patients treated with velmanase alfa experienced improvements in biochemical and functional measures that were maintained for up to 4 years. Long term follow-up is important and further supports the use of velmanase alfa as an effective and well-tolerated treatment for AM. Based on the currently available data set, no baseline characteristic can be predictive of treatment outcome. Early treatment during paediatric age showed better outcome in functional endpoints. PB John Wiley & Sons YR 2018 FD 2018-03-18 LK http://hdl.handle.net/10668/12421 UL http://hdl.handle.net/10668/12421 LA en NO Lund AM, Borgwardt L, Cattaneo F, Ardigò D, Geraci S, Gil-Campos M, et al. Comprehensive long-term efficacy and safety of recombinant human alpha-mannosidase (velmanase alfa) treatment in patients with alpha-mannosidosis. J Inherit Metab Dis. 2018 Nov;41(6):1225-1233 DS RISalud RD Apr 11, 2025