Objective Reached in Clinical Study of Patients with Breast Cancer or Melanoma

DUBLIN, OH, USA | March 19, 2009 | Neoprobe Corporation (OTCBB: NEOP), a diversified developer of innovative oncology and cardiovascular surgical and diagnostic products, today announced that a multicenter Phase 3 study of Lymphoseek® has reached the accrual of 203 lymph nodes, the study’s primary accrual objective. The multi-center open label study has been conducted in patients with either breast cancer or melanoma. Based upon a review of the preliminary data from the study, the primary efficacy end-point of the study was achieved.

David Bupp, Neoprobe’s President and CEO, said, “Neoprobe is pleased to announce this successful accrual milestone in the first Phase 3 study of Lymphoseek (NEO3-05). In the Phase 2 multi-center study of Lymphoseek, which was conducted in patients with breast cancer or melanoma, an overall localization rate of 94% in lymph nodes was achieved in those patients where both a patent blue dye and Lymphoseek were used. A similar concordance rate of 94% was established by Neoprobe and FDA as the primary efficacy objective for the Phase 3 trial, NEO3-05. Based upon the intraoperative worksheets and preliminary pathology reports, we believe that the primary efficacy end-point of NEO3-05 has been achieved and no incidents related to drug safety have been reported in the Lymphoseek studies. Upon completion of a full analysis of the Phase 3 data, we will provide a complete update on the study results after all clinical data has been reviewed by our internal clinical team and external consultants. We expect full data will be available in the 2nd quarter of 2009. We intend to hold a conference call to discuss the full trial results when the study reviews have been completed.”

Lymphoseek is a proprietary radioactive tracing agent being developed for use in connection with gamma detection devices in a surgical procedure known as Intraoperative Lymphatic Mapping. A Phase 3 multi-center clinical trial for Lymphoseek in patients with breast cancer or melanoma is concluding and a protocol for a second Phase 3 clinical study to evaluate the efficacy of Lymphoseek as a sentinel lymph node tracing agent in patients with head and neck squamous cell carcinoma has been submitted to the U.S. Food and Drug Administration and the European Medicines Agency.

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 therapeutic treatment needs of patients. Neoprobe currently markets the neoprobe® GDS line of gamma detection systems that are widely used by cancer surgeons. In addition, Neoprobe holds significant interests in the development of related biomedical systems and radiopharmaceutical agents including Lymphoseek® and RIGScan® CR. Neoprobe’s subsidiary, Cira Biosciences, Inc., is also advancing a patient-specific cellular therapy technology platform called ACT. Neoprobe’s strategy is to deliver superior growth and shareholder return by maximizing its strong position in gamma detection technologies and diversifying into new, synergistic biomedical markets through continued investment and selective acquisitions. www.neoprobe.com

SOURCE: Neoprobe Corporation