EX-99 3 ex1_sc13ga1-collagenex.txt EXHIBIT 1 CUSIP NO. 19419B100 Schedule 13G Page 20 of 24 EXHIBIT 1 --------- JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1) The undersigned acknowledge and agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing statements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him, her or it contained herein, but shall not be responsible for the completeness and accuracy of the information concerning the other entities or persons, except to the extent that he, she or it knows or has reason to believe that such information is inaccurate. Dated as of May 21, 2003 PERSEUS-SOROS BIOPHARMACEUTICAL FUND, LP By: Perseus-Soros Partners, LLC, Its General Partner By: SFM Participation, L.P., Its Managing Member By: SFM AH, LLC, Its General Partner By: Soros Private Funds Management LLC, Its Managing Member /s/ Jodye Anzalotta ---------------------------------------------------- By: Jodye Anzalotta Title: Attorney-in-Fact PERSEUS-SOROS PARTNERS, LLC By: SFM Participation, L.P., Its Managing Member By: SFM AH, LLC, Its General Partner By: Soros Private Funds Management LLC, Its Managing Member /s/ Jodye Anzalotta ---------------------------------------------------- By: Jodye Anzalotta Title: Attorney-in-Fact CUSIP NO. 19419B100 Schedule 13G Page 21 of 24 PERSEUS BIOTECH FUND PARTNERS, LLC By: Perseuspur EC, L.L.C., Managing Member By: Perseuspur, LLC, Member /s/ Rodd Macklin ---------------------------------------------------- By: Rodd Macklin Title: Secretary and Treasurer PERSEUS EC, L.L.C. By: Perseuspur, LLC, Member /s/ Rodd Macklin ---------------------------------------------------- By: Rodd Macklin Title: Secretary and Treasurer PERSEUSPUR, LLC /s/ Rodd Macklin ---------------------------------------------------- By: Rodd Macklin Title: Secretary and Treasurer MR. FRANK H. PEARL /s/ Rodd Macklin ---------------------------------------------------- By: Rodd Macklin Title: Attorney-in-Fact CUSIP NO. 19419B100 Schedule 13G Page 22 of 24 SFM PARTICIPATION, LP By: SFM AH, LLC, Its General Partner By: Soros Private Funds Management LLC, Its Managing Member /s/ Jodye Anzalotta ---------------------------------------------------- By: Jodye Anzalotta Title: Attorney-in-Fact SFM AH, LLC By: Soros Private Funds Management LLC, Its Managing Member /s/ Jodye Anzalotta ---------------------------------------------------- By: Jodye Anzalotta Title: Attorney-in-Fact SOROS FUND MANAGEMENT LLC /s/ Jodye Anzalotta ---------------------------------------------------- By: Jodye Anzalotta Title: Assistant Counsel MR. GEORGE SOROS /s/ Jodye Anzalotta ---------------------------------------------------- By: Jodye Anzalotta Title: Attorney-in-Fact