Biovitrum's Interim Report January - March 2007 Strong first quarter - New clinical trials and positive cash flow January - March •Net revenues for the first quarter decreased by 12 percent to SEK 352.9 M (403.3) •Net profit for the first quarter amounted to SEK 44.1 M (86.3) and earnings per share before dilution to SEK 1.0 (1.7) •Cash flow from operations amounted to SEK 48.1 M (72.8), cash and cash equivalents and short-term investments as of March 31 amounted to SEK 898.5 M (1,613.9) •The 11β-HSD1 project for the treatment of diabetes, which is out-licensed to Amgen, progressed well and is estimated to enter phase II during the second half of 2007 •Phase IIa study initiated within the collaboration with Synphora for the treatment of psoriasis •Phase I study initiated within the anti-RhD co-development project with Symphogen for the treatment of two blood disorders After the end of the period •Martin Nicklasson was appointed in April as Biovitrum's new President and CEO effective May 14, 2007 “It gives me great pleasure to be able to say in my final interim report that we have a highly positive trend in our broad clinical portfolio and that our financial position continues to be strong,” says Mats Pettersson, CEO of Biovitrum. “I am convinced that Martin Nicklasson, with his exceptionally broad background, is the right person to lead the future development of Biovitrum.” To present the report, Biovitrum's CEO Mats Pettersson and CFO Göran Arvidson will hold a Press and Analyst meeting in Stockholm today Monday, April 23 at 10:30 (CET) at IVA, Grev Turegatan 16, conference room "Wenström" and a Conference Call at 14:30 CET). Dial-in: +46 8 566 363 29. Presentation material will be available at www.biovitrum.com under investorrelations/presentations For more information, please contact: Biovitrum AB (publ) Mats Pettersson, CEO, tel.:+46 8 697 23 27 Göran Arvidson, CFO, tel.: +46 8 697 23 68 Anna Karin Källén, VP Communications, tel.: +46 8 697 20 85 Anders Martin-Löf, Director Investor relations, tel.: +46 8 697 37 07 About Biovitrum Biovitrum is one of the largest biopharma companies in Europe. With operations in Sweden and in the UK Biovitrum conducts research and develops pharmaceuticals for unmet medical needs both for common diseases and conditions that affect smaller patient populations. Biovitrum has a broad and balanced R&D portfolio with several projects in clinical and preclinical phases for the treatment of obesity, diabetes, inflammation and eye and blood diseases as well as a number of well defined niche indications. Biovitrum develops and produces protein-based drugs on a contractual basis and markets a range of specialist pharmaceuticals primarily in the Nordic countries. Biovitrum has revenues of approximately SEK 1.2 billion and 550 employees. Biovitrum is listed on the Stockholm Stock Exchange since September 15, 2006. For more information see www.biovitrum.com