SURFACE LOGIX PHASE 1 CLINICAL TRIAL ACHIEVES TARGET PROFILE

SLx-2101, A Novel Long Acting PDE-5 Inhibitor for Disorders Related to Endothelial Dysfunction

BOSTON , Mass. ( October 11, 2005 ) – Surface Logix today announced the successful completion of the first clinical trial for SLx-2101. The Phase 1 study was designed to assess the safety and tolerability of SLx-2101, establish the pharmacokinetic (PK) profile and to provide evidence of activity in two pharmacodynamic (PD) models. The results of this study will be presented by noted urologist and recognized expert on sexual health, Dr. Irwin Goldstein, at the upcoming Sexual Medicine Society of North America, Inc. (SMSNA) meeting in New York City from November 17-20.

About Surface Logix Inc.

Surface Logix Inc uses its expertise in biophysical chemistry to create new small molecule drugs that are optimized to meet the challenges of human physiology. The Company is advancing multiple internal programs focused primarily on cardiovascular disease, oncology and metabolic disorders and works with strategic partners to create differentiated new chemical entities. For more information, please visit www.surfacelogix.com.

Contact:
David H. Donabedian, Ph.D.
Surface Logix Inc.
Vice President, Business Development
617.746.8520

Media:
Kari Lampka
MacDougall Biomedical Communications, Inc.
508.647.0209