Corporate Governance

Committees Composition

	Audit Committee	Compensation Committee	Nominating and Corporate Governance Committee	Science Committee
Dr. Steven Altschuler	Audit Committee	Compensation Committee
Kathy LaPorte		Compensation Committee	Nominating and Corporate Governance Committee
Edward Morrow Atkinson III			Nominating and Corporate Governance Committee	Science Committee
Derek DiRocco, Ph.D.			Nominating and Corporate Governance Committee	Science Committee
Gregory Grunberg, M.D.	Audit Committee		Nominating and Corporate Governance Committee
Michael Hayden, M.B. Ch.B., Ph.D.		Compensation Committee		Science Committee
Lota Zoth	Audit Committee	Compensation Committee

= Chairperson = Member = Chairman of the Board