AGREEMENT
EXHIBIT
4
In
accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934,
as
amended, the undersigned hereby agree that this Statement on Schedule 13D
relating to the Common Stock, $0.001 par value, of Incyte Corporation is being
filed with the Securities and Exchange Commission on behalf of each of
them.
January
8, 2008
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By: | /s/ Xxxxxx X. Xxxxx | |
Xxxxxx X. Xxxxx |
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By: | /s/ Xxxxx X. Xxxxx | |
Xxxxx X. Xxxxx |