Neuropathic Gaucher disease.

Gaucher disease (GD) has been conventionally demarcated into clinical variants, based on the presence or absence of primary central nervous system (CNS) involvement. In cases with primary CNS involvement (types 2 and 3 GD), distinctions have been made on the basis of severity and rate of disease progression. Although the type 1 GD variant had been designated non-neuropathic, recent studies have revealed that affected individuals have an increased risk of developing peripheral neuropathy and parkinsonian features. There is a need for greater understanding of the neurologic features of GD, as these aspects of the phenotype are the most recalcitrant to current therapy. Significant advances in therapy have been achieved, primarily through enzyme replacement, for the systemic, extra-neurologic features among patients with types 1 and 3 GD. Improved understanding of the pathophysiologic basis of neurologic involvement may enable development of therapies that may have a positive influence on neurologic outcome.