updated 9/10/2010 1:47:35 PM ET 2010-09-10T17:47:35

COPENHAGEN, Denmark, Sept. 10, 2010 (GLOBE NEWSWIRE) -- Summary: Genmab announces 48 week results from a Phase II study of ofatumumabin RRMS.

Genmab A/S (Copenhagen:GEN) announced today encouraging results from an ofatumumab Phase II safety and pharmacokinetics study in patients with relapsing-remitting multiple sclerosis (RRMS).

A total of 38 patients were included in this double-blind, dose escalation trial. Patients were randomized to receive two infusions of 100 mg, 300 mg or 700 mg of ofatumumab or placebo. After 24 weeks, the patients randomized to placebo were treated with ofatumumab and patients who were treated with ofatumumab received placebo. All patients were then followed for an additional 24 weeks.

In the study, there were no dose limiting toxicities, no unexpected safety findings, and no patients tested positive for human anti-human antibodies. Efficacy was assessed by MRI (magnetic resonance imaging) as a secondary endpoint. Repeated MRI scans showed a sustained reduction in the number of brain lesions up to week 48 in patients (n=26) who were treated with ofatumumab followed by placebo. Patients who received placebo followed by ofatumumab (n=12) showed similar 24 week results to those who were treated with ofatumumab followed by placebo.

About RRMS

Multiple Sclerosis (MS) is an inflammatory disease of the central nervous system. MS is twice as common in females as in males, occurs with a peak incidence at the age of 35 years and incidence varies widely in different populations and ethnic groups. The etiology of MS remains unknown, but the geographic variation points towards possible environmental and genetic factors.The most common form of MS is relapsing-remitting MS characterized by unpredictable recurrent attacks where the symptoms usually evolve over days and are followed by either complete, partial or no neurological recovery. Noprogression of neurological impairment is experienced between attacks.

About ofatumumab

Ofatumumab is a novel human monoclonal antibody. It targets a part of the CD20 molecule on B-cells encompassing an epitope in the small loop.

Ofatumumab is being developed under a co-development and commercialization agreement between Genmab and GlaxoSmithKline. Ofatumumab is not yet approved in any country for RRMS.

About Genmab A/S

Genmab is a leading international biotechnology company focused on developing fully human antibody therapeutics for the potential treatment of cancer. Genmab's world class discovery and development teams are using cutting-edge technology to create and develop products to address unmet medical needs. Our primary goal is to improve the lives of patients who are in urgent need of new treatment options. For more information on Genmab's products and technology, visit www.genmab.com.

This Stock Exchange 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. For a further discussion of these risks, please refer to the section "Risk Management" in Genmab's Annual Report, which is available on www.genmab.com. Genmab does not undertake any obligation to update or revise forward looking statements in this Stock Exchange Release nor to confirm such statements in relation to actual results, unless required by law.

Genmab(R); the Y-shaped Genmab logo(R); HuMax(R); HuMax-CD20(R); HuMax-EGFr(TM); HuMax-IL8(TM); HuMax-TAC(TM); HuMax-HepC(TM); HuMax-CD38(TM); HuMax-CD32b(TM); HuMax-TF(TM); HuMax-Her2(TM); HuMax-VEGF(TM); HuMax-Wnt; HuMax-cMet(TM) and UniBody(R) are all trademarks of Genmab A/S. Arzerra(R) is a trademark of GlaxoSmithKline.

Contact: Stock Exchange Release no. 32/2010

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