Exhibit 99.2
JOINT FILING AGREEMENT
The undersigned hereby agree that statements on Schedules 13G and 13D
and Forms 3, 4 and 5 with respect to the shares of common stock of Novacea, 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 13d1(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 May 3, 2006 PROQUEST INVESTMENTS II, L.P.
By: ProQuest Associates II LLC,
Its: General Partner
By: /S/ XXXXXXXX XXXXXXXXX
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Xxxxxxxx XxXxxxxxx, MANAGING MEMBER OF THE
GENERAL PARTNER
PROQUEST INVESTMENTS II ADVISORS FUND, L.P.
By: ProQuest Associates II LLC,
Its: General Partner
By: /S/ XXXXXXXX XXXXXXXXX
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Xxxxxxxx XxXxxxxxx, MANAGING MEMBER OF THE
GENERAL PARTNER
PROQUEST ASSOCIATES II LLC
By: /S/ XXXXXXXX XXXXXXXXX
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Xxxxxxxx XxXxxxxxx, MANAGING MEMBER
/S/ XXX XXXXXX
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Xxx Xxxxxx, individually
/S/ XXXXX XXXXXXXXX
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Xxxxx Xxxxxxxxx, individually
