| GDNF
Information Center
Amgen's neurology program is focused on discovering and developing
therapeutics targeting neurodegenerative diseases such as Parkinson's
disease (PD), and novel inflammatory and neuropathic pain therapeutics.
Neurodegenerative diseases
such as Parkinson's are diseases that primarily affect the world's
growing elderly population. It is estimated that there are more
than two million patients diagnosed with PD in the seven largest
markets. Approximately 15 percent of PD patients are severely
disabled and in the U.S. alone, the annual impact on the nation's
economy is estimated to be $25 billion.
Chronic pain disorders are
also a significant source of human suffering and the number one
reason people seek healthcare treatment. In the U.S., pain has
reached epidemic proportions with more than 50 million Americans
suffering from chronic pain and more than $10 billion spent each
year on related prescription drugs. Amgen's exploration of candidates
for both inflammatory and neuropathic pain has the potential to
address key unmet needs for more effective, convenient and safer
treatments.
Core Research Programs
For more than 10 years, Amgen
has been immersed in research on key neurotrophic factors, proteins
that are found in the nervous system and promote the growth, regeneration
and protection of nervous tissue.
GDNF (Glial cell derived
neurotrophic factor)
The latest stage candidate in the neuroscience pipeline, GDNF,
is being studied in patients with advanced PD. GDNF is a naturally
occurring protein. Preclinical data suggest that GDNF both protects
and stimulates regeneration of neurons that secrete dopamine,
the same neurons that are progressively lost in PD. Amgen has
created a recombinant form of GDNF, and is studying the efficacy
of GDNF when continuously infused into a targeted area of the
brain.
An open label study with
five patients showed sustained and progressive improvement in
motor function and increased neuronal flurodopa uptake. Phase
2 clinical studies with GDNF in advanced PD patients are expected
to be completed in 2004.
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