Summary: Final data from two HuMax-CD4 Phase II CTCL studies shows median response duration of 81 weeks and overall response rate of 56% at highest doses. Copenhagen, Denmark; June 29, 2007 - Genmab A/S (CSE: GEN) announced today final data from its two Phase II studies in early and late stage mycosis fungoides (MF), a form of cutaneous T-cell lymphoma (CTCL), was reported in Blood (Kim, Y., M. Duvic, E. Obitz, et al. Clinical efficacy of zanolimumab (HuMax-CD4): two phase 2 studies in refractory cutaneous T-cell lymphoma. Blood 2007; 109: 4655-4662). In the high dose levels of 560 mg and 980 mg, 13 MF patients had objective responses lasting between 8 and 91 weeks, with median response duration of 81 weeks (20.3 months), a significant increase compared to previously reported data. Nine of the responses lasted more than 20 weeks. Three MF patients treated at the 280 mg dose had responses lasting 12, 13 and 24 weeks and discontinued the study before disease progression. Responses generally remained the same with 13 of 38 MF patients overall obtaining an objective response to HuMax-CD4 (zanolimumab). Fifty-six percent of MF patients treated at 560 mg (7/14 patients) or 980 mg (3/4 patients) of HuMax-CD4 achieved objective responses compared with 15% at the 280 mg (3/20 patients) dose when evaluated by CA Score. “The final data from the Phase II CTCL studies shows the duration of response nearly doubled the duration of 10.5 months we previously reported,” said Lisa N. Drakeman, Ph.D. “We believe this length of duration could be a significant advantage for CTCL patients who must often return to their doctors seeking new treatments after short periods of time.” About the Studies Two studies were conducted concurrently - one in early stage CTCL and one in late stage. In both studies, patients were refractory or intolerant to previous therapy and were treated with a 280 mg, 560 mg or 980 mg dose of HuMax-CD4 once a week for 16 weeks. Patients were followed for at least 4 weeks after the end of treatment or until disease progression. Objective responses were evaluated using the Composite Assessment of Index Lesion Disease Activity (CA) Score. About Genmab A/S Genmab A/S is a biotechnology company that creates and develops human antibodies for the treatment of life-threatening and debilitating diseases. Genmab has numerous products in development to treat cancer, infectious disease, rheumatoid arthritis and other inflammatory conditions, and intends to continue assembling a broad portfolio of new therapeutic products. In addition, Genmab has developed UniBody(TM), a new proprietary technology that creates a stable, smaller antibody format. Genmab has operations in Europe and the US. For more information about Genmab, visit www.genmab.com. This press release contains forward looking statements. The words “believe”, “expect”, “anticipate”, “intend” and “plan” and similar expressions identify forward looking statements. Actual results or performance may differ materially from any future results or performance expressed or implied by such statements. The important factors that could cause our actual results or performance to differ materially include, among others, risks associated with product discovery and development, uncertainties related to the outcome and conduct of clinical trials including unforeseen safety issues, uncertainties related to product manufacturing, the lack of market acceptance of our products, our inability to manage growth, the competitive environment in relation to our business area and markets, our inability to attract and retain suitably qualified personnel, the unenforceability or lack of protection of our patents and proprietary rights, our relationships with affiliated entities, changes and developments in technology which may render our products obsolete, and other factors. Genmab is not under an obligation to up-date statements regarding the future following the publication of this release; nor to confirm such statements in relation to actual results, unless this is required by law. Genmab(R); the Y-shaped Genmab logo(R); HuMax(R); HuMax-CD4(R); HuMax-CD20(R); HuMax-EGFr(TM); HuMax-Inflam(TM); HuMax-TAC(TM); HuMax-HepC(TM); HuMax-CD38(TM); HuMax-ZP3(TM); and UniBody(TM) are all trademarks of Genmab A/S. Contact: Helle Husted, Sr. Director, Investor Relations, T: +45 33 44 77 30, M: +45 25 27 47 13, E: hth@genmab.com Investor News No. 09/2007 ###