Exhibit 16.1


Office of the Chief Accountant
Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549

April 30, 2002

Dear Sir/Madam:

We have read the second paragraph of Item 4 included in the Form 8-K dated April
30, 2002 of Curis, Inc. to be filed with the Securities and Exchange Commission
and are in agreement with the statements contained therein.

Very truly yours,



Arthur Andersen LLP

cc: Mr. George Eldridge, Chief Financial Officer, Curis, Inc.