GNE myopathy is a distal myopathy that is thought to be caused by a mutation in the GNE gene
that encodes an enzyme in the biosynthetic process of aceneuramic acid (typical sialic acid).
The investigators will examine the efficacy and safety of aceneuramic acid (SA-ER tablets) 6g
daily for 48 weeks in patients with GNE myopathy in a placebo-controlled, double-blind,
controlled trial.