Safety and Efficacy of Voxzogo for Growth Deficits in MPS IVA and VI

This is a Phase I/II, single arm, open label study of vosoritide therapy provided subcutaneously at 15 ug/kg/day for 96 weeks to 6 patients with MPS IVA or VI. Prior to enrollment in the interventional arm of study, subjects will be followed for a minimum of 24 weeks to gather information on safety profiles and determine annualized growth velocity. The primary study endpoint is the determination of safety and tolerability of daily vosoritide treatment in MPS. Exploratory endpoints include changes in linear and segmental growth as well as biomarkers of growth and bone metabolism.