6-K – Report of foreign issuer [Rules 13a-16 and 15d-16]

On May 2, 2016 Prima BioMed Ltd (ASX: PRR; NASDAQ: PBMD) ("Prima", the "Company") reported the granting of patent number 5908210 entitled "Use of Recombinant LAG-3 or the Derivatives thereof for Eliciting Monocyte Immune Response" by the Japanese Patent Office (Filing, 6-K, Prima Biomed, MAY 2, 2016, View Source [SID:1234511818]).

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This patent relates to Prima’s IMP321 and its use either alone, or in combination, for immunotherapeutic or chemotherapeutic purposes to induce an increase in circulating monocyte numbers in order to protect against cancer. This patent will therefore support the use of IMP321 as it is being used in Prima’s AIPAC trial in metastatic breast cancer. Patent expiry is expected to be 3rd of October 2028.

About Prima BioMed
Prima BioMed is a globally active biotechnology company positioned to become a leader in the development of immunotherapeutic products for the treatment of cancer. Prima BioMed is dedicated to leveraging its technology and expertise to bring innovative treatment options to market for patients and to maximise value to shareholders.

Prima’s current lead product is IMP321, based on the LAG-3 immune control mechanism which plays a vital role in the regulation of the T cell immune response. IMP321, which is a soluble LAG-3Ig fusion protein, is an APC activator boosting T cell responses. IMP321 is currently in a Phase II clinical trial as a chemoimmunotherapy for metastatic breast cancer termed AIPAC (clinicaltrials.gov identifier NCT 02614833) and in a Phase I combination therapy trial in metastatic melanoma termed TACTI-mel (clinicaltrials.gov identifier NCT 02676869). A number of additional LAG-3 products including antibodies for immune response modulation in autoimmunity and cancer are being developed by large pharmaceutical partners.