SECOND AMENDMENT TO LEASE
THIS SECOND AMENDMENT TO LEASE ("AMENDMENT") is made and entered into as of JUNE 16,
2000, by and between W9/PC LIMITED PARTNERSHIP, a Delaware limited partnership ("LANDLORD")
and IDEC PHARMACEUTICALS CORPORATION, a Delaware corporation ("TENANT").
R E C I T A L S:
A. WHEREAS, Professors Fund I, L.P., an Arizona limited partnership, Managing Agent for All Spectrum
Services, Inc., a California corporation ("ORIGINAL LANDLORD"), and IDEC Pharmaceuticals Corporation,
a California corporation ("ORIGINAL TENANT") Tenant entered into that certain Agreement dated as of
August 13, 1996 (the "ORIGINAL LEASE"), whereby Original Landlord leased to Tenant and Tenant leased
from Original Landlord the entire building located at 3030 Callan Road, San Diego, California. The Original
Lease was subsequently amended by that certain First Amendment to Lease dated as of October 1, 1999
("FIRST AMENDMENT"). Landlord is the successor-in-interest to Original Landlord and Tenant is the
successor-in-interest to Original Tenant. The Original Lease, as amended by the First Amendment may be
collectively referred to herein as the "LEASE."
B. WHEREAS, by this Amendment, Landlord and Tenant desire to correct the name of the Landlord, confirm
the Expansion Commencement Date and otherwise modify the Lease as set forth herein; and
C. WHEREAS, unless otherwise defined herein, capitalized terms as used herein shall have the same meanings as
given thereto in the Lease.
NOW, THEREFORE, in consideration of the foregoing recitals and the mutual covenants contained herein, and
for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto agree as follows:
A G R E E M E N T:
1. Landlord Name. Landlord's name is hereby amended and corrected to read as follows: "W9/PC LIMITED
PARTNERSHIP, a Delaware limited partnership" wherever it appears in the First Amendment.
2. Expansion Commencement Date. Landlord and Tenant hereby agree