On November 29, 2018 Immutep Limited (ASX: IMM; NASDAQ: IMMP) ("Immutep" or "the Company"), a biotechnology company developing novel immunotherapy treatments for cancer and autoimmune diseases, is reported the grant of patent number 2601961 entitled "Compositions comprising LAG-3 and therapeutic antibodies and their uses in treating cancer" by the European Patent Office (Press release, Immutep, NOV 29, 2018, View Source [SID1234531768]).

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This European patent was filed as a divisional application, and follows the grant of the parent application and another divisional application in Europe in 2013 and 2017, respectively.

The claims of this new patent are geared toward the use of Immutep’s lead product candidate eftilagimod alpha ("efti" or "IMP321") in combination with a therapeutic antibody, such as rituximab, cetuximab, or trastuzumab, that kills tumor cells through antibody dependent cell-mediated cytotoxicity (ADCC) for the treatment of cancer. According to the claims, efti elicits a monocyte-mediated immune response, therefore enhancing ADCC, and is administered before, with, or subsequent to administration of the therapeutic antibody.

The new patent points to the broad potential of efti as an immunostimulant and provides patent protection in Europe for an additional range of combination therapies.

The patent expiry date is 3 October 2028.