GDNF 4 PARKINSON'S -

Very sad. I'm going to be keeping a close eye on this one.

Amgen had clinical trials of a drug that appeared to have fantastic results undoing the effects of Parkinson's. The trials were stopped after animal safety studies showed that in some cases the drug could cause brain damage and death.

But the patients who were seeing life-altering results from the drug are understandably both devastated and angry that Amgen won't provide any more of it at any price.