Stem Cell Therapeutics Corp. Announces Publication of Phase I Stroke Data

  Stem Cell Therapeutics Corp. ("SCT" or the "Company") (TSX VENTURE: SSS) is pleased to announce the acceptance and publication of the paper entitled "Open labeled, uncontrolled pharmacokinetic study of single intramuscular hCG dose in healthy male volunteers" by the International Journal of Clinical Pharmacology and Therapeutics, Vol. 47, August 2009. This paper was authored by Drs. Alan Moore, President & CEO, Allen Davidoff, VP Product Development and Yan Yang, Clinical Research Associate, all of SCT; Dr. Michael D. Hill of Foothills Hospital at the University of Calgary, and Dr. Steven C. Cramer, from the University of California, Irvine.

Dr. Allen Davidoff, VP of Product Development, commented as follows:

"Acceptance by this highly respected, peer reviewed journal not only permits us to share more of our knowledge of hCG's novel effects with the scientific community but it is also a meaningful developmental step for NTx®-265. Importantly, this study demonstrated for the first time that hCG circulating in the blood crosses the blood brain barrier leading to concentrations of hCG in the cerebral-spinal fluid. This fundamental evidence, combined with strong supportive basic science studies, supported initiation of the BETAS Phase IIa clinical trial in patients with acute ischemic stroke."

This study was designed to compare blood and cerebrospinal fluid ("CSF") pharmacokinetic characteristics of two forms of human chorionic gonadotropin ("hCG"): Pregnyl® and Ovitrelle®. Two separate groups, each with six older male human subjects, were administered a single dose of either form of the drug at 10,000 IU intramuscularly ("IM"), and then followed over a 36-hour period. No significant difference was observed when plasma levels of hCG were measured for either preparation of hCG (Peak plasma concentration: 316ï¿1/253 versus 270ï¿1/260 at 12 hours, 311ï¿1/238 versus 321ï¿1/260 IU/L at 24 hours; AUC: 10053ï¿1/21268 versus 8793ï¿1/21768, Pregnyl® and Ovitrelle®, mean ï¿1/2 SD, respectively). Additionally, both forms of circulating hCG distributed to the central nervous system ("CNS") as manifest by an increased number of subjects whose CSF samples showed detectable levels of hCG in their CSF over a 36-hour period. Similarly, there was no significant difference between the two forms when distribution to the CSF was compared at 36 hours (2.0 and 1.2 IU/L; range 1.9-2.1 and 1-1.4 IU/L for Pregnyl® and Ovitrelle®, respectively). This preliminary study in normal human volunteers suggested that the two forms of hCG tested, Pregnyl® and Ovitrelle®, when administered IM, distribute in a similar fashion into the circulation and CSF. Consequently, SCT concluded that these two drugs likely demonstrate bioequivalent pharmacokinetics with respect to the CSF.

About Stem Cell Therapeutics Corp.: Stem Cell Therapeutics Corp. is a Canadian public biotechnology company (TSX VENTURE: SSS) focused on the development and commercialization of drug-based therapies to treat central nervous system diseases. SCT is a leader in the development of therapies that utilize drugs to stimulate a patient's own resident stem cells. The Company's programs aim to repair brain and nerve function lost due to disease or injury. The Company's extensive patent portfolio of owned and licensed intellectual property supports the potential expansion into future clinical programs in numerous neurological diseases such as traumatic brain injury, multiple sclerosis, Huntington's disease, Alzheimer's disease, and ALS.

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Contacts: Stem Cell Therapeutics Corp. Alan Moore, PhD President and CEO [phone] ext. 224 Email: [e-mail] Stem Cell Therapeutics Corp. Chloe Douglas-Crampton Investor Relations [phone] ext. 221 Email: [e-mail] Website: www.stemcellthera.com