Exhibit 99.1

JOINT FILING AGREEMENT

The undersigned hereby agree that statements on Schedules 13G and/or 13D and Forms 3, 4 and 5 with respect to the shares of common stock of Savient Pharmaceuticals, Inc. and any amendments thereto signed by each of the undersigned shall be filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended. The undersigned hereby further agree that this Joint Filing Agreement may be included as an exhibit to such statements or amendments. This Joint Filing Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

Dated: As of February 11, 2008
			Ridgeback Capital Investments L.P.
	By:		Ridgeback Capital Investments Ltd.,
			Its General Partner
	By:		/s/ Bud Holman
			Name: Bud Holman Title: Director
			Ridgeback Capital Investments Ltd.
	By:		/s/ Bud Holman
			Name: Bud Holman
			Title: Director
		Ridgeback Capital Management LLC
	By:	*
		Name: Wayne Holman
		Title: Managing Member
		*
		Wayne Holman, individually

*	By:	/s/ Bud Holman
		Bud Holman, Attorney-in-Fact
		Power of Attorney filed as an exhibit to Schedule 13G to which this Joint Filing Agreement is also filed as an exhibit