TopoTarget A/S Symbion Fruebjergvej 3 DK 2100 Copenhagen Ø Denmark Tel: +45 39 17 83 92 Fax: +45 39 17 94 92 CVR-nr: 25695771 www.topotarget.com To OMX Nordic Exchange Copenhagen, Investor News Investor News No. 04-08 / Copenhagen, May 16, 2008 TopoTarget Announces Presentations of belinostat clinical data at the American Society of Clinical Oncology (ASCO) 2008 Annual Meeting and the 2008 International Conference on Malignant Lymphoma Copenhagen, Denmark - May 16, 2008 - TopoTarget A/S (OMX: TOPO) today announced the presentation of clinical data from two ongoing company sponsored belinostat Phase II studies at the ASCO 2008 Annual Meeting being held in Chicago, IL, US from May 30-June 3 and data from the ongoing T-Cell Lymphoma Phase II study at the 2008 International Conference on Malignant Lymphoma being held in Lugano, Switzerland on June 4-7 2008. In addition, data from two NCI sponsored studies (belinostat monotherapy in patients with ovarian tumors, and belinostat in combination with azacytidine in patients with myeloid neoplasms) will be presented at ASCO. TopoTarget will host a conference call with management at 2pm CET on 2 June 2008 to discuss the results from ASCO and provide an update on the belinostat clinical development programme. ASCO presentation details: Title: Phase II Multicenter Trial of the Histone Deactylase Inhibitor (HDACi) Belinostat, Carboplatin and Paclitaxel (BelCaP) in Patients (pts) with Relapsed Epithelial Ovarian Cancer (EOC) Date/Time: Sat May 31/2-6pm local time poster display Location: Room S403 Poster Discussion Sat May 31/5-6pm local time Location: Room S406 Title: A phase II trial of the Histone Deacetylase inhibitor Belinostat (PXD101) in patients with platinum resistant epithelial ovarian tumors and micropapillary/borderline (LMP) ovarian tumors. A Trial of the PMH Phase II Consortium. (NCI sponsored) Date/Time: Sat May 31/2-6pm poster display Location: Room S403 Poster Discussion Sat May 31/5-6pm Location: Room S406 Title: Phase I study of PXD101 plus azacitidine (AZC) in patients with advanced myeloid neoplasms (NCI sponsored) Date/Time: Sat May 31/8am-12 noon General Poster session Location: S Hall A1 International Conference on Malignant Lymphoma presentation details Title: Phase II open-label trial of Belinostat (PXD101) in patients with recurrent or refractory peripheral or cutaneous T-Cell Lymphoma Date/Time: June 5, 8am-6pm local time poster display Poster discussion 12.05pm-1pm Room:MarqueeParcoCiani The posters for presentations of company sponsored studies will subsequently be available on www.topotarget.com. Dial in numbers for telephone conference call on June 2 at 2.00pm CET, Dial phone number for: Europe: +45 3690 0936 US: (+1) 866 481 9887 Enter the host-id: 70843 Enter PIN: 9339 (speak and listen) / 6050 (listen only) TopoTarget A/S For further information, please contact: Ulla Hald Buhl Telephone +45 39 17 83 92 Director IR & Communications Mobile +45 21 70 10 49 Background information About TopoTarget TopoTarget (OMX: TOPO) is a biotech company, headquartered in Denmark and with subsidiaries in the US, Switzerland, Germany and the UK, dedicated to finding ''Answers for Cancer'' and developing improved cancer therapies. TopoTarget is founded and run by clinical cancer specialists and combines years of hands-on clinical experience with in-depth understanding of the molecular mechanisms of cancer. Focus lies on highly predictive cancer models and key cancer targets (including HDACi, NAD+, mTOR, FasLigand and topoisomerase II inhibitors) and a strong development foundation has been built. TopoTarget has a broad portfolio of small molecule pre-clinical drug candidates and nine drugs (both small molecules and protein based) are in clinical development, including both novel anti-cancer therapeutics and new cancer indications for existing drugs. Savene®/Totect® was approved by EMEA in 2006 and the FDA in 2007 and is TopoTarget's first product on the market. For more information, please refer to www.topotarget.com. About Belinostat Belinostat is a promising small molecule HDAC inhibitor being investigated for its role in the treatment of a wide range of solid tumors and hematologic malignancies either as a single-agent, or in combination with other active anti-cancer agents, including carboplatin, paclitaxel, cis-retinoic acid, azacitidine and Velcade® (bortezomib) for injection. HDAC inhibitors represent a new mechanistic class of anti-cancer therapeutics that target HDAC enzymes, and have been shown to arrest growth of cancer cells (including drug resistant subtypes); induce apoptosis, or programmed cell death; promote differentiation; inhibit angiogenesis; and sensitize cancer cells to overcome drug resistance when used in combination with other anti-cancer agents. Intravenous belinostat is currently being evaluated in multiple clinical trials as a potential treatment for cutaneous and peripheral T-cell lymphomas, B-cell lymphomas, AML, mesothelioma, soft tissue sarcoma, MDS, and liver, colorectal, and ovarian cancers, either alone or in combination with anti- cancer therapies. An oral formulation of belinostat is also being evaluated in a Phase I clinical trial for patients with advanced solid tumors. In August 2004, CuraGen signed a Clinical Trials Agreement with the NCI under which the NCI will sponsor several clinical trials to investigate belinostat for the treatment of various cancers, both as a single-agent and in combination chemotherapy regimens. In May 2005, TopoTarget announced the signing of a Cooperative Research and Development Agreement (CRADA) with the NCI to conduct preclinical and nonclinical studies on belinostat in order to better understand its anti-tumor activity and to provide supporting information for clinical trials. TopoTarget Safe Harbour Statement This announcement may contain forward-looking statements, including statements about our expectations of the progression of our preclinical and clinical pipeline including the timing for commencement and completion of clinical trials and with respect to cash burn guidance. Such statements are based on management's current expectations and are subject to a number of risks and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. TopoTarget cautions investors that there can be no assurance that actual results or business conditions will not differ materially from those projected or suggested in such forward-looking statements as a result of various factors, including, but not limited to, the following: The risk that any one or more of the drug development programs of TopoTarget will not proceed as planned for technical, scientific or commercial reasons or due to patient enrolment issues or based on new information from non-clinical or clinical studies or from other sources; the success of competing products and technologies; technological uncertainty and product development risks; uncertainty of additional funding; TopoTarget's history of incurring losses and the uncertainty of achieving profitability; TopoTarget's stage of development as a biopharmaceutical company; government regulation; patent infringement claims against TopoTarget's products, processes and technologies; the ability to protect TopoTarget's patents and proprietary rights; uncertainties relating to commercialization rights; and product liability expo-sure; We disclaim any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise, unless required by law.