Catumaxomab Explained

Catumaxomab[1] (trade name Removab) is a rat-mouse hybrid monoclonal antibody which is used to treat malignant ascites, a condition occurring in people with metastasizing cancer. It binds to antigens CD3 and EpCAM. It was developed by Fresenius Biotech and Trion Pharma (Germany).

Medical use

The drug is used for the treatment of malignant ascites in people with EpCAM-positive cancer if a standard therapy is not available.[2] [3] Ascites is an accumulation of fluid in the peritoneal cavity.

The usual treatment of malignant ascites is to puncture the peritoneum to let the accumulated fluid drain out. After the puncture, catumaxomab is given as an intraperitoneal infusion. The procedure is repeated four times within about eleven days. It has been shown that puncture free survival can be increased from 11 to 46 days with this treatment.[4]

Adverse effects

Common adverse effects include fever, nausea and vomiting. Fever and pain should be controlled by giving NSAIDs, analgetics or antipyretics before application of catumaxomab.[5] All side effects were fully reversible in studies. Most are caused by the liberation of cytokines.

Mechanism of action

Many types of cancer cells carry EpCAM (epithelial cell adhesion molecule) on their surface. By binding to such a cell via one arm, to a T lymphocyte via the other arm and to an antigen-presenting cell like a macrophage, a natural killer cell or a dendritic cell via the heavy chains, an immunological reaction against the cancer cell is triggered. Removing cancer cells from the abdominal cavity reduces the tumour burden which is seen as the cause for ascites in people with cancer.[6] [7]

Chemical structure

Catumaxomab consists of one "half" (one heavy chain and one light chain) of an anti-EpCAM antibody and one half of an anti-CD3 antibody, so that each molecule of catumaxomab can bind both EpCAM and CD3. In addition, the Fc-region can bind to an Fc receptor on accessory cells like other antibodies, which has led to calling the drug a trifunctional antibody.

History

Catumaxomab was developed by Trion Pharma, based on preliminary work by the Helmholtz Zentrum München. Dr. Horst Lindhofer is listed at the primary inventor of the patent.[8] Fresenius Biotech conducted clinical trials and filed the drug for approval with the European Medicines Agency (EMA). It was approved in Europe on 20 April 2009.[9] In 2013, catumaxomab was voluntarily withdrawn from the US market and in 2017 in the EU market for commercial reasons.[10] The product had not been marketed in the EU since 2014.[11]

External links

Notes and References

  1. Linke R, Klein A, Seimetz D . Catumaxomab: clinical development and future directions . mAbs . 2 . 2 . 129–36 . 2010 . 20190561 . 2840231 . 10.4161/mabs.2.2.11221 .
  2. Web site: European Public Assessment Report for March 2009 . European Medicines Agency . March 2009 .
  3. Heiss MM, Murawa P, Koralewski P, Kutarska E, Kolesnik OO, Ivanchenko VV, Dudnichenko AS, Aleknaviciene B, Razbadauskas A, Gore M, Ganea-Motan E, Ciuleanu T, Wimberger P, Schmittel A, Schmalfeldt B, Burges A, Bokemeyer C, Lindhofer H, Lahr A, Parsons SL . 6 . The trifunctional antibody catumaxomab for the treatment of malignant ascites due to epithelial cancer: Results of a prospective randomized phase II/III trial . International Journal of Cancer . 127 . 9 . 2209–21 . November 2010 . 20473913 . 2958458 . 10.1002/ijc.25423 .
  4. Lordick F, Ott K, Weitz J, Jäger D . The evolving role of catumaxomab in gastric cancer . Expert Opinion on Biological Therapy . 8 . 9 . 1407–15 . September 2008 . 18694358 . 10.1517/14712598.8.9.1407 . 73237824 .
  5. Book: Schubert-Zsilavecz M, Wurglics M . Neue Arzneimittel . 2009 .
  6. Web site: Capital Market Day Fresenius Biotech: Fresenius concentrates biotechnology activities on antibody and innovative cell therapies . https://web.archive.org/web/20100826230959/http://www.fresenius.se/internet/fag/com/faginpub.nsf/Content/P-Info2004_01_15 . 26 August 2010 . Fresenius SE .
  7. Ruf P, Gires O, Jäger M, Fellinger K, Atz J, Lindhofer H . Characterisation of the new EpCAM-specific antibody HO-3: implications for trifunctional antibody immunotherapy of cancer . British Journal of Cancer . 97 . 3 . 315–21 . August 2007 . 17622246 . 2360319 . 10.1038/sj.bjc.6603881 .
  8. EP . 1315520 . Use of Trifunctional Bispecific and Trispecific Antibodies for the Treatment of Malignant Ascites . Lindhofer H . Trion Pharma GmbH .
  9. Web site: TRION Pharma: Trifunctional Antibody Catumaxomab Kills Cancer Stem Cells . 2009-11-19 . https://web.archive.org/web/20110713204533/http://www.lifescience-online.com/TRION_Pharma__Trifunctional_Antibody_Catumaxomab_K,16211.html?portalPage=Lifescience%20Today.News . 2011-07-13 . dead .
  10. Web site: Neovii completes marketing authorisation withdrawal of Removab in the European Union . 26 July 2017 . Neovii Biotech GmbH .
  11. Web site: Removab: Withdrawal of the marketing authorisation in the European Union . European Medicines Agency . 10 July 2017 .

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