Glial cell line-derived neurotrophic factor (GDNF) has proved efficacious in treatment of neurodegeneration in toxin-induced models of Parkinson disease (PD), but clinical trials have been equivocal. Do the results of a recent study—suggesting that GDNF is ineffective in an α-synuclein-overexpression PD model—exclude GDNF as a therapy for PD?
- Barry J. Hoffer
- Brandon K. Harvey