DUBLIN, Ohio--(BUSINESS WIRE)--Jun 20, 2007 - Neoprobe Corporation (OTCBB:NEOP), a diversified developer of innovative oncology and cardiovascular surgical and diagnostic products, today announced positive preliminary results from a multicenter Phase 2 clinical study of its lead clinical candidate, Lymphoseek(R) (Technetium Tc99m DTPA-mannosyl-dextran). Lymphoseek is a proprietary radioactive targeting agent being developed for use with handheld gamma detection devices, such as Neoprobe's neo2000(R) system, in a surgical procedure known as Sentinel Lymph Node Biopsy (SLNB). The primary endpoint of this multicenter, single-arm, open-label, within-patient, single-dose, multi-stage trial measured the rate at which Lymphoseek localized to lymphoid tissue with a goal of achieving 90% localization. In results reported today, localization of Lymphoseek to lymphoid tissue was observed in over 94% of the SLNB procedures performed as a part of the Phase 2 trial in patients with either breast cancer or melanoma.

This study is being conducted at five of the leading cancer centers in the U.S.: John Wayne Cancer Center; M.D. Anderson, the University of California, San Francisco; University Hospitals - Cleveland (Case Western Reserve); and the University of Louisville. Positive interim results from the trial were announced earlier this year. Neoprobe also reported that no drug-related significant adverse events have been noted in results analyzed to-date. Neoprobe now plans to begin winding down Phase 2 trial activities, collecting the required 30-day patient safety follow-up information and accumulating data to report to FDA. In parallel, Neoprobe is also preparing to submit its Phase 3 pivotal trial protocol to FDA.

About Neoprobe

Neoprobe is a biomedical company focused on enhancing patient care and improving patient outcome by meeting the critical intraoperative diagnostic information needs of physicians and
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