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Percent change in urinary glycosaminoglycan (uGAG) levels from baseline at last available test result for severe MPS II patients on long-term enzyme replacement therapy (ERT). *First available uGAG test result for patient 6 was after 7 months of ERT and for patient 14 was after 6 months of ERT. No baseline data are available. Here we report percent change between first available and last available uGAG test results
