Extension Agreement dated effective June 22, 2005 among the Company, K. Ian Matheson, Searchlight Minerals, Inc. and Gold Crown Minerals Inc

EXTENSION AGREEMENT

THIS EXTENSION AGREEMENT is made effective as of the 22nd day of June, 2005, by and among Phage Genomics, Inc. (the “Optionee”), K. Ian Matheson (“Matheson”), Searchlight Minerals, Inc. and Gold Crown Minerals Inc., (together the “Optionors”) (the "Extension Agreement").

WHEREAS:

A.          The Optionors, the Optionee and Matheson are parties to a Letter Agreement dated as of February 8, 2005, (the "Letter Agreement"), wherein the Optionors agreed to assign, subject to the fulfillment of certain conditions, all of their right title and interest in the following Nevada mineral claims to the Optionee:

B.          The Optionors and the Optionee mutually desire to extend the corporate restructuring date set out in Section 7 to the Letter Agreement (the “Restructuring Date”) upon the terms and conditions set forth herein.

NOW THEREFORE THIS AGREEMENT WITNESSES that in consideration of the premises contained herein and for other good and valuable consideration, the parties agree as follows:

1.         Extension of Restructuring Date. Section 7 of the Letter Agreement is hereby revised to read as follows:

“Phage is completing a corporate restructuring and Phage will issue the securities as set forth in this agreement upon completion of the restructuring which will be completed on or before June 30, 2005.”

2.          No Other Modification. The parties confirm that the terms, covenants and conditions of the Letter Agreement remain unchanged and in full force and effect, except as modified by this Agreement.

3.          Headings. The headings of the various sections of this Extension Agreement have been inserted for convenience of reference only and shall not be deemed to be part of this Extension Agreement.

4.          Counterparts. This Extension Agreement may be executed in two or more counterparts, each of which shall constitute an original, but all of which, when taken together, shall constitute but one instrument, and shall become effective when one or more counterparts have been signed by each party hereto and delivered to the other parties.

5.         Successors and Assigns. Except as otherwise expressly provided herein, the provisions hereof shall inure to the benefit of, and be binding upon, the successors, assigns, heirs, executors and administrators of the parties hereto.

2

6.         Entire Agreement. This Extension Agreement constitutes the full and entire understanding and agreement between the parties with regard to the subject hereof.

IN WITNESS WHEREOF, the parties have duly executed and delivered this Extension Agreement as of the date first written above.