Halozyme Therapeutics, Inc. to Hold Business Update Conference Call on November 9

SAN DIEGO, Nov. 1 /PRNewswire-FirstCall/ -- Halozyme Therapeutics, Inc. , a biopharmaceutical company developing and commercializing products based on the extracellular matrix, today announced that it will release financial results for the three and nine months ended September 30, 2007 after market close on Thursday, November 8, 2007.

Jonathan Lim, MD, President and Chief Executive Officer, Gregory Frost, PhD, Vice President and Chief Scientific Officer, Robert Little, Vice President and Chief Commercial Officer, and David Ramsay, Vice President and Chief Financial Officer, will host an investment community conference call beginning at 8:00 a.m. PT (11:00 a.m. ET) on Friday, November 9, 2007, to provide a business update.

Individuals interested in participating in the conference call may do so by dialing 888-463-4487 for domestic callers, or 706-679-5355 for international callers. Those interested in listening to the conference call live via the Internet may do so by visiting the Investor Relations section of the Company’s Web site at http://www.halozyme.com. A replay will be available on Halozyme’s Web site for 30 days. A telephone replay will be available for 48 hours by dialing 800-642-1687 from the U.S., or 706-645-9291 for international callers, and entering reservation number 21378327.

About Halozyme Therapeutics, Inc.

Halozyme is a biopharmaceutical company developing and commercializing products based on the extracellular matrix for the drug delivery, oncology and dermatology markets. The company’s portfolio of products is based on intellectual property covering the family of human enzymes known as hyaluronidases. The company’s Enhanze Technology is a novel drug delivery platform designed to increase the absorption and dispersion of biologics. Its key partnerships are with Roche to apply Enhanze(TM) Technology to Roche’s biological therapeutic compounds for 13 targets and with Baxter to apply Enhanze Technology to Baxter’s biological therapeutic compound, GAMMAGARD LIQUID 10%. In addition, the company has received FDA approval for two products: Cumulase(R) and HYLENEX, for use as an adjuvant to increase the absorption and dispersion of other injected drugs and fluids. HYLENEX is partnered with Baxter International Inc. The Company also has a number of different enzymes in its portfolio that are targeting significant areas of unmet need.

dramsay@halozyme.com dmarkley@lhai.com

CONTACT: David A. Ramsay, Chief Financial Officer of Halozyme
Therapeutics, Inc., +1-858-794-8881, dramsay@halozyme.com; or investor Don
Markley of Lippert-Heilshorn & Associates, +1-310-691-7100,
dmarkley@lhai.com, for Halozyme Therapeutics, Inc.

Web site: http://www.halozyme.com/

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