Glial cell line-derived neurotrophic factor: AMGN began testing GDNF in patients with moderate to severe Parkinson's.

Amgen Inc. (AMGN), Thousand Oaks, Calif. Product: Glial cell line-derived neurotrophic factor (GDNF) Indication: Parkinson's disease Status: AMGN began testing the safety and tolerability of GDNF, del...