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EXHIBIT 10.28
[RIBOGENE, INC. LETTERHEAD]
February 6, 1997
Xxxxxxx Xxxxx, Ph.D.
School of Medicine
University of Washington
Department of Microbiology SC 42
G3111 Health Sciences Building
Seattle, WA 98195
Dear Xx. Xxxxx:
This letter agreement extends the Consulting Agreement entered into between you
and RiboGene from February 1, 1993 - January 31, 1994 to the additional term of
February 1, 1997 - January 31, 1998.
The formal meetings are planned to be held periodically during the above time
period by mutual agreement and the annual compensation will be $12,500 per annum
during the same time period.
Please acknowledge your agreement with the above extension and terms by signing
two (2) copies of this letter agreement. Return one (1) to me at your earliest
convenience.
By: /s/ XXXXXXX X. XXXXXX By: /s/ XXXXXXX X. XXXXX
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Xxxxxxx X. Xxxxxx Xxxxxxx Xxxxx, Ph.D.
Vice President, Finance
and Administration Title: Professor/Microbiology
Chief Financial Officer ---------------------
Date: Date: 2/19/97
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