Exhibit 23.1
Consent of L.E.K. Consulting LLC
We hereby consent to the incorporation by reference in the Registration Statements on Forms S-8 (File Nos. 333-52796, 333-34780, 33-80036, 33-80050 and 333-62017) and the Registration Statements on Forms S-3 (File Nos. 333-64704, 333-43204, 333-52736, 33-64021, 333-08607, 333-56755, 333-64761 and 333-89341), of Avant Immunotherapeutics, Inc. f/k/a/ TCell Sciences, Inc. (the “Company”) of the summarization of our report to the Company, dated June 7, 2002, that is contained on page 6 in the last sentence of Section C.2. of Item 1 of this Annual Report on Form 10-K.
/s/ L.E.K. Consulting LLC |
| /s/ Michael Clabault |
|
| C.O.O. for L.E.K. Consulting LLC | ||
Boston, Massachusetts
September 8, 2003
