FDA extends review of ARZERRA(tm) (Ofatumumab)


FDA EXTENDS REVIEW OF ARZERRA™ (OFATUMUMAB)                   


Summary:  GlaxoSmithKline and Genmab announced that the FDA extends review      
ARZERRA by three months.                                                        

London, UK and Copenhagen, Denmark; June 16, 2009 - GlaxoSmithKline (NYSE: GSK) 
and Genmab A/S (OMX: GEN) today announced that the United States Food and Drug  
Administration (FDA) informed the companies that the agency has extended the    
action date for the ofatumumab BLA application  by three months.                

The BLA was submitted on January 30, 2009 and was granted priority review by the
FDA. Under priority review, the FDA sets the target date for a decision at six  
months, rather than the standard 10 month review. The three month extension will
allow the agency to review additional chemistry and manufacturing data submitted
on June 5. The new action date for the BLA is October 31, 2009.                 

An FDA Oncology Drugs Advisory Committee (ODAC), held on May 29, 2009, voted    
10-3 that ofatumumab was likely to offer clinical benefit for certain patients  
with chronic lymphocytic leukemia (CLL).  Data from the pivotal trial of        
ofatumumab were presented at the American Society of Hematology 2008 annual     
meeting and at American Society of Clinical Oncology 2009 annual meeting.       

CLL is the most common adult leukemia and one of the most common malignant      
lymphoid diseases. In the United States, about 90,000 people are living with    
CLL, with approximately 15,000 estimated new cases being diagnosed in 2009.     

GSK and Genmab are committed to working with the FDA in order to bring this     
potential new treatment option to patients.                                     

GlaxoSmithKline - one of the world's leading research-based pharmaceutical and  
healthcare companies - is committed to improving the quality of human life by   
enabling people to do more, feel better, and live longer. For company           
information, visit GlaxoSmithKline at www.gsk.com.                              

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, development and manufacturing 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.                                               


GlaxoSmithKline Enquiries:                                                      

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| UK Media enquiries                      | Philip Thomson   | (020) 8047 5502 |
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|                                         | David Outhwaite  | (020) 8047 5502 |
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|                                         | Stephen Rea      | (020) 8047 5502 |
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| US Media enquiries                      | Lisa Behrens     | (919) 699 1758  |
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|                                         | Ken Inchausti    | (919) 699 1758  |
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| European Analyst/ Investor enquiries    | David Mawdsley   | (020) 8047 5564 |
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|                                         | Sally Ferguson   | (020) 8047 5543 |
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|                                         | Gary Davies      | (020) 8047 5503 |
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| US Analyst/ Investor enquiries          | Tom Curry        | (215) 751 5419  |
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|                                         | Jen Hill Baxter  | (215) 751 7002  |
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| Genmab Enquiries                        |                  |                 |
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| Vice President, Investor Relations      | Helle Husted     | T +45 33 44 77  |
|                                         |                  | 30              |
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|                                         |                  | M +45 25 27 47  |
|                                         |                  | 13              |
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|                                         |                  | hth@genmab.com  |
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Cautionary statement regarding forward-looking statements for GSK:              
Under the safe harbor provisions of the U.S. Private Securities Litigation      
Reform Act of 1995, GSK cautions investors that any forward-looking statements  
or projections made by GSK, including those made in this announcement, are      
subject to risks and uncertainties that may cause actual results to differ      
materially from those projected. Factors that may affect GSK' s operations are  
described under 'Risk Factors' in the 'Business Review' in the company' s Annual
Report on Form 20-F for 2007.                                                   

Registered in England and Wales                                                 
No. 3888792                                                                     

Registered Office:                                                              
980 Great West Road                                                             
Brentford, Middlesex                                                            
TW8 9GS                                                                         

Forward Looking Statement for Genmab:                                           
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®; the Y-shaped Genmab logo®; HuMax®; HuMax-CD20®; HuMax-EGFr™;           
HuMax-IL8™; HuMax-TAC™; HuMax-HepC™; HuMax-CD38™; HuMax-CD32b™; HuMax-TF™;      
HuMax-Her2™; HuMax-VEGF™ and UniBody® are all trademarks of Genmab A/S. Arzerra™
is a trademark of GlaxoSmithKline.                                              


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