Exhibit A JOINT FILING AGREEMENT
Exhibit A
JOINT FILING AGREEMENT
In accordance with Rule 13d-1(k)(l)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them that certain Amendment No. 3 to the Statement on Schedule 13D filed on October 23, 2008 (including additional amendments thereto) with respect to the shares of Common Stock of Avigen, Inc. This Joint Filing
Agreement shall be filed as an Exhibit to such Statement.
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BIOTECHNOLOGY VALUE FUND, L.P. |
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By: |
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BVF Partners L.P., its general partner |
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By: |
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BVF Inc., its general partner |
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By: |
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/s/ Xxxx X. Xxxxxxx |
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Xxxx X. Xxxxxxx President |
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BIOTECHNOLOGY VALUE FUND II, L.P. |
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By: |
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BVF Partners L.P., its general partner |
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By: |
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BVF Inc., its general partner |
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By: |
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/s/ Xxxx X. Xxxxxxx |
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Xxxx X.Xxxxxxx President |
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BVF INVESTMENTS, L.L.C. |
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By: |
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BVF Partners L.P., its manager |
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By: |
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BVF Inc., its general partner |
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By: |
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/s/ Xxxx X. Xxxxxxx |
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Xxxx X. Xxxxxxx President |
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INVESTMENT 10, L.L.C. |
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By: |
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BVF Partners L.P., its investment manager |
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By: |
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BVF Inc., its general partner |
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By: |
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/s/ Xxxx X. Xxxxxxx |
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Xxxx X. Xxxxxxx President |
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BVF PARTNERS L.P. |
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By: |
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BVF Inc., its general partner |
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By: |
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/s/ Xxxx X. Xxxxxxx |
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Xxxx X.Xxxxxxx President |
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BVF INC. |
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By: |
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/s/ Xxxx X. Xxxxxxx |
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Xxxx X. Xxxxxxx President |