BVF Acquisition LLC Extends Avigen Tender Offer to Apr...( NEW YORK March 6 /- BVF Acquisition L...)

NEW YORK, March 6 /PRNewswire/ -- BVF Acquisition LLC (the "Purchaser"), an affiliate of Biotechnology Value Fund L.P. ("BVF"), which has commenced a cash tender offer to purchase all of the outstanding shares of Avigen, Inc. (Nasdaq: AVGN) ("Avigen") for $1.00 per share, announced today that it has extended the expiration date for the tender offer to 6:00 p.m., New York City time, on Friday, April 3, 2009. The tender offer was previously set to expire at 6:00 p.m., New York City time, on Friday, March 6, 2009. As of the close of business on March 6, 2009, a total of 2,854,626 shares, including shares tendered by guaranteed delivery, had been tendered in and not withdrawn from the offer, which together with the shares owned by BVF and affiliates, represents approximately 39.2% of the total shares outstanding of Avigen.

MacKenzie Partners, Inc. is the Information Agent for the tender offer and any questions or requests for the Offer to Purchase and related materials with respect to the tender offer or the special meeting may be directed to MacKenzie Partners, Inc.

THIS PRESS RELEASE IS FOR INFORMATIONAL PURPOSES ONLY AND IS NOT AN OFFER TO BUY OR THE SOLICITATION OF AN OFFER TO SELL ANY SHARES. THE SOLICITATION AND THE OFFER TO BUY AVIGEN COMMON STOCK IS ONLY BEING MADE PURSUANT TO AN OFFER TO PURCHASE AND RELATED MATERIALS THAT THE PURCHASER HAS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION. STOCKHOLDERS SHOULD READ THESE MATERIALS CAREFULLY BECAUSE THEY CONTAIN IMPORTANT INFORMATION, INCLUDING THE TERMS AND CONDITIONS OF THE OFFER. STOCKHOLDERS ARE ABLE TO OBTAIN THE OFFER TO PURCHASE AND RELATED MATERIALS WITH RESPECT TO THE TENDER OFFER FREE AT THE SEC'S WEBSITE AT WWW.SEC.GOV OR FROM THE PURCHASER BY CONTACTING MACKENZIE PARTNERS, INC. TOLL-FREE AT (800) 322-2885 OR COLLECT
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