FOR IMMEDIATE RELEASE

AUTOIMMUNE INC. REPORTS 2003 FIRST QUARTER FINANCIAL RESULTS

Pasadena, California, May 8, 2003AutoImmune Inc. (Nasdaq: AIMM) today reported net income of $1.03 million, or $0.06 per share basic and diluted, for the three months ended March 31, 2003, compared with a net loss of $0.22 million, or $0.01 per share basic and diluted, for the three months ended March 31, 2002. The results for the three month period ended March 31, 2003 reflect receipt of the final payment from a subsidiary of Elan Corporation plc for its purchase of AutoImmune's rights to certain patent applications. As of March 31, 2003, the Company reported $11.2 million in cash and marketable securities as compared to $10.0 million in cash and marketable securities as of December 31, 2002.

Robert C. Bishop, Ph.D., Chairman of the Board and Chief Executive Officer stated "This past quarter, AutoImmune's joint venture with Deseret Laboratories International began marketing by direct mail Colloral®, a product for nutritional support of patients with rheumatoid arthritis. The new product can also be purchased over the internet at ColloralLLC.com or by contacting Colloral LLC at 1414 East 3850 South, St. George, UT 84790 (toll free 1-877-284-7246). We hope to expand market channels for this product through our joint venture and believe the product can be a meaningful contributor to our bottom line."

BioMS has stated that its advanced phase clinical trial of MBP8298 treatment for chronic progressive multiple sclerosis, which utilizes intellectual property rights exclusively licensed from AutoImmune, is now scheduled to start in the second half of this year. BioMS makes monthly diligence payments to AutoImmune and has a royalty obligation on sales of MBP8298 should it reach the market.

Teva Pharmaceutical Industries, Ltd., continues planning for the next human clinical studies on an oral formulation of COPAXONE® (glatiramer acetate), a product for the treatment of multiple sclerosis, which utilizes intellectual property rights exclusively licensed from AutoImmune. If Teva is successful in bringing this product to market, AutoImmune will receive both a milestone payment and a royalty on sales.

Results from the oral insulin arm of the NIH sponsored diabetes prevention trial (DPT-1), which is testing a therapeutic method covered by AutoImmune's intellectual property, should be announced at the ADA meeting in New Orleans this June. If the results are positive, it should open the door to additional licensing opportunities for the company.

AutoImmune is a biopharmaceutical company involved in the development of a new class of mucosally administered therapies for the treatment of autoimmune and cell-mediated inflammatory diseases and conditions.

This release contains forward-looking statements which involve risks and uncertainties. The Company’s actual results may differ significantly from results discussed in the forward-looking statements due to a number of important factors, including, but not limited to the uncertainties of clinical trial results, the Company’s dependence on third parties for licensing revenue, and the risks of technological change and competition. These factors are more fully discussed in the Company’s most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission in the section “Business-Factors to be Considered.” The discussion in the Annual Report on Form 10-K is hereby referenced into this release.

Contact:
Robert C. Bishop, Ph.D.
Chairman and Chief Executive Officer
AutoImmune Inc.
626-792-1235
website: http://www.autoimmuneinc.com

AutoImmune Inc.
1199 Madia StreetPasadena, CA91103
Phone: 626-72-1235
Fax: 626-792-1236