Plan to evaluate the potential of this therapeutic antibody against PIGF in cancer and non-cancer indications, including ophthalmology

LUND, Sweden and LEUVEN, Belgium I June 5, 2012 I ThromboGenics NV (Euronext Brussels: THR) and co-development partner BioInvent International (OMXS: BINV) announce today that they will regain global rights to TB-403 from Roche. TB-403 was licensed to Roche in 2008. ThromboGenics and BioInvent plan to further evaluate the potential of TB-403 in certain cancer and non-cancer indications, including ophthalmology. Clinical studies with TB-403 to-date have shown that it is safe and well tolerated. Roche’s decision was due to the prioritization of resources in the Roche portfolio.

TB-403 is a monoclonal antibody against placental growth factor (PlGF). PIGF is a naturally occurring protein that belongs to the family of vascular endothelial growth factors (VEGF) that promote the formation of blood vessels. TB-403’s ability to block the growth of new blood vessels and modulate inflammation means it could potentially be used in a broad range of cancer and non-cancer indications.

Dr. Patrik De Haes, CEO of ThromboGenics, said: “Regaining all rights to TB-403, an antibody which blocks PIGF, will allow us to evaluate its potential as a treatment for a number of significant retinal diseases including diabetic retinopathy and AMD. We believe that our lead product ocriplasmin will allow us to establish a strong market position in the treatment of retinal disorders where vitreomacular adhesion plays a role. By investing in the development of TB-403 we could have another exciting new product to accelerate the growth of our emerging ophthalmology franchise.”

Svein Mathisen, CEO of BioInvent, added: “TB-403’s ability to selectively block the formation of new blood vessels provides us with a therapeutic antibody candidate that could have potential in indications where it has so far not been fully assessed. We intend to evaluate such opportunities and will provide an update when data are available.”

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For further information please contact:

ThromboGenics

Dr. Patrik De Haes, CEO

Chris Buyse, CFO

 

Tel: + 32 16 75 13 10

patrik.dehaes@thrombogenics.com

Tel: + 32 16 75 13 10

chris.buyse@thrombogenics.com

Citigate Dewe Rogerson

David Dible/ Nina Enegren/ Sita Shah

 

Tel: +44 20 7638 9571

sita.shah@citigatedr.co.uk

The Trout Group

Todd James, Director

Simon Harnest, Associate

Tel: +1 646 378 2926

tjames@troutgroup.com

 

About ThromboGenics

ThromboGenics is a biopharmaceutical company focused on developing and commercializing innovative ophthalmic medicines. The company’s lead product, ocriplasmin, has successfully completed two Phase III clinical trials for the pharmacological treatment of symptomatic Vitreomacular Adhesion (VMA) including macular hole. The MAA for ocriplasmin has been accepted for review in Europe and the BLA has been re-submitted in the U.S. Ocriplasmin is in Phase II clinical development for additional vitreoretinal conditions.

In March 2012, ThromboGenics signed a strategic partnership with Alcon (Novartis) for the commercialization of ocriplasmin outside the United States. Under this agreement, ThromboGenics could receive up to a total of €375 million in up-front and milestone payments, plus an attractive level of royalties on Alcon’s net sales of ocriplasmin. ThromboGenics and Alcon intend to share the costs equally of developing ocriplasmin for a number of new vitreoretinal indications.

ThromboGenics is also developing TB-403 a novel antibody therapeutic, in collaboration with BioInvent International, for cancer and non-cancer, including ophthalmology, indications.

ThromboGenics is headquartered in Leuven, Belgium. The Company is listed on the NYSE Euronext Brussels exchange under the symbol THR. More information is available at www.thrombogenics.com.

About BioInvent International

BioInvent International AB, listed on the NASDAQ OMX Stockholm (BINV), is a research-based pharmaceutical company focusing on developing antibody drugs. The Company currently has four clinical development projects within the areas of thrombosis, cancer and atherosclerosis. The Company has signed various strategic alliances to strengthen the product pipeline and increase the likelihood of success. These partners include Genentech, Human Genome Sciences, Roche and ThromboGenics. The company’s competitive position is underpinned by its proprietary antibody development platform. The scope and strength of this platform is also utilised by partners, such as Bayer HealthCare, Daiichi Sankyo, Mitsubishi Tanabe, UCB and XOMA. More information is available at www.bioinvent.com.

SOURCE: BioInvent International