Roche Files IND for Second Genmab Antibody

Summary: Genmab's partner Roche has filed an IND with the US FDA for a Genmab   
antibody.                                                                       

Copenhagen, Denmark; August 10, 2007 - Genmab A/S (OMX: GEN) announced today    
that its partner Roche has filed an Investigational New Drug application (IND)  
with the US Food and Drug Administration for a Genmab antibody developed under  
the companies' collaboration.  Genmab will receive a milestone payment from     
Roche which does not influence Genmab's financial guidance for 2007.            

Under the agreement with Roche, Genmab utilizes its broad antibody expertise and
development capabilities to create human antibodies to a broad range of disease 
targets identified by Roche. Genmab receives milestone and royalty payments     
based on successful products. In certain circumstances, Genmab may obtain rights
to develop products based on disease targets identified by Roche.  If all goals 
are reached, the value of the collaboration to Genmab could be USD 100 million, 
plus royalties.                                                                 

“This will be the second antibody produced under our collaboration with Roche to
enter the clinic and Genmab's seventh antibody to enter clinical development    
overall,” said Lisa N. Drakeman, Ph.D., Chief Executive Officer of Genmab.  “Our
partnership with Roche continues to bear fruit and add value to Genmab's        
expanding product pipeline.”                                                    

About Genmab A/S                                                                
Genmab is a leading international biotechnology company focused on developing   
fully human antibody therapeutics for unmet medical needs.  Using unique,       
cutting-edge antibody technology, Genmab's world class discovery and development
teams have created and developed an extensive pipeline of products for potential
treatment of a variety of diseases including cancer and autoimmune disorders.   
As Genmab advances towards a commercial future, we remain committed to our      
primary goal of improving 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 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                                              
                                                                                
Stock Exchange Release no. 34/2007                                              

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