AMENDED EXHIBIT A AMENDMENT OF SUBLEASE TERMS It is agreed that the following terms control the Sublease between SWMF Holdings Corporation, as "Landlord" and Esperion Therapeutics, as "Tenant" for the Subleased Premises located at the Southwest...

                                                                   EXHIBIT 10.41

                                AMENDED EXHIBIT A

                           AMENDMENT OF SUBLEASE TERMS

         It is agreed that the following terms control the Sublease between SWMF
Holdings Corporation, as "Landlord" and Esperion Therapeutics, as "Tenant" for
the Subleased Premises located at the Southwest Michigan Innovation
Center--XxXxxxxxx Xxxx on the campus of Western Michigan University, Kalamazoo,
Michigan:

         1.    The Lease Amendment Date is: February 1, 2002;

         2.    The Rooms which are added to the original Sublease are: 5280C;

         3.    The additional square footage of the Subleased Premises is: 160;

         4.    The new total square footage of the Subleased Premises is: 3,424

         5.    The additional annual rent is: $2,000;

         6.    The additional monthly rent is: $166.66;

         7.    The new total annual rent is: $42,800;

         8.    The new total annual rent is: $3,566.66;

         9.    The first amended rent payment is due on February 1, 2002 and
               shall continue on the same day of each month thereafter
               throughout the Lease Term.

Dated Effective: February 1, 2002

TENANT:                                   LANDLORD:
 Esperion Therapeutics, Inc.              Southwest Michigan Innovation Center
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 /s/ Xxxxx X. Xxxxxx                       /s/ Xxxxx Xxxxxx
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By: Xxxxx X. Xxxxxx                       By: Xxxxx Xxxxxx

Title: Pres/CEO                           Title: Executive Director/CEO
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