I. MODIFIED AGREEMENTS

Biotech Co.*
(Country;
Symbol)

Pharma Co.
(Country)

Change from original
agreement

Terms/Details (Date)


Chemokine
Therapeutics
Corp.
(Canada;
TSE:CTI)

Pharmaceutical Product Development Inc.

Chemokine re-acquired rights to the white-blood-cell mobilizer CTCE-0214; rights were granted to PPD in 2003

PPD will get $0.1M up front and up to $2.5M in milestone payments; Chemokine also will pay about $1.7M to buy back preferred shares held by PPD (4/17)

ImClone
Systems Inc.
(IMCL)

Merck KGaA (Germany)

An arbitrator ruled in favor of ImClone in a dispute over rights to the IgG1 monoclonal antibody IMC-11F8

The binding ruling leaves ImClone with exclusive rights to the epidermal growth factor receptor antibody outside the U.S. and Canada (4/4)

Immunicon
Corp.
(IMMC)

Pfizer Inc.

They expanded deal focused on developing reagents to detect certain antigens on circulating tumor cells

The deal, begun in February 2003, was amended to permit the companies to initiate new clinical research studies (3/28)

Memory
Pharmaceuticals Corp.
(MEMY)

F. Hoffmann- La Roche Ltd. (Switzerland)

The companies ended the discovery portion of their collaborations on PDE4 inhibitors

Memory's co-promotion rights to MEM 1414 and MEM 1917 were expanded to include Europe; funding under the deal will be redirected to their nicotinic alpha-7 collaboration (2/28)

II. TERMINATED AGREEMENTS

Nastech
Pharmaceutical
Co. Inc.
(NSTK)

Merck & Co. Inc.

Merck ended their deal to develop PYY3- 6 nasal spray for obesity

Merck made the move following review of data from a proof-of- oncept study; Nastech intends to continue the program, with a dosing study followed by a Phase II trial (3/2)


Notes:

# The information in the chart does not cover agreements between biotech companies or agricultural agreements.

* Private companies are indicated with an asterisk.

Unless otherwise noted, stock symbols listed are on the Nasdaq market.

TSE = Toronto Stock Exchange.