( LOS ANGELES--(BUSINESS WIRE)--Apr 4 20...)CytRx Announces Positive Results of Arimoclomol in Preclinical,Stroke Recovery Studies,Health

LOS ANGELES--(BUSINESS WIRE)--Apr 4, 2007 - CytRx Corporation (NASDAQ:CYTR) today announced positive results of additional animal stroke studies indicating that CytRx's lead drug candidate arimoclomol significantly accelerated the recovery of sensory and motor function in an experimental rat model of stroke, even when treatment was withheld as long as 48 hours after stroke was induced. These data confirm and expand upon preclinical data announced by CytRx in December 2006. Orally-administered arimoclomol is currently in clinical evaluation as a therapeutic treatment for amyotrophic lateral sclerosis (ALS or Lou Gehrig's disease). Based on these impressive results, CytRx will begin planning a potential Phase II clinical trial with arimoclomol in stroke patients.

"These new animal results show that arimoclomol has the potential to help patients recover from the devastating effects of stroke even if the drug is administered well after the actual stroke event," said CytRx President and CEO Steven A. Kriegsman. "We believe this represents a unique advantage of arimoclomol compared with other stroke drug candidates. If efficacious in stroke patients, it would represent a major breakthrough in improving their quality of life. Furthermore, arimoclomol's flexibility for delayed intervention may allow substantial penetration into the $58 billion stroke market because the 'race' to get the patient to an emergency room for treatment may not significantly limit its use, unlike other potential stroke drugs."

In the present study, stroke was induced in rats by blocking blood flow to parts of the brain causing cerebral oxygen deprivation. The rats then received an oral dose of arimoclomol or control substance daily for 35 days, beginning either 6, 12, 24 or 48 hours after stroke was induced. Recovery from stroke was measured by monitoring sensory motor skills. While motor skills declined dramatically in all study rats i
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