MabVax Therapeutics Enrolls First Patients in Expansion of Phase I Clinical Trial Treating Newly Diagnosed Pancreatic Cancer Patients

SAN DIEGO, Nov. 28, 2016

On November 14^th of this year the company reported that the safety of MVT-5873 has been established during administration as monotherapy at three incremental dose levels in relapsed or refractory locally advanced or metastatic pancreatic cancer patents. As specified in the protocol, once safety and tolerability have been established, the second part of the phase I trial investigating MVT-5873 in combination with a standard of care chemotherapy using nab-paclitaxel plus gemcitabine could be initiated.  Patients are now being enrolled in the first of successive incremental dose levels to access safety and tolerability when used in combination with chemotherapy and to ultimately establish a recommended phase II dose (RP2D) when used in combination.

In addition patients continue to be recruited into the monotherapy portion of the trial to establish the RP2D in monotherapy in relapsed or refractory locally advanced or metastatic pancreatic cancer patents.  Since the announcement in mid-November, three monotherapy patients have been treated with the next incremental dose. 

"From the outset we have been working toward expanding our clinical program into treatment of newly diagnosed patients in combination with a standard of care chemotherapy," stated President and CEO J. David Hansen.  He added, "Pancreatic cancer is an extraordinarily difficult disease to treat and our evaluation of MVT-5873 in combination with a front line chemotherapy provides a potential new opportunity for treatment of the disease.  We designed our preclinical studies to assess the synergistic effect of adding MVT-5873 to a standard chemotherapy treatment regimen.  We reported positive results from those studies and demonstrated a dose dependent positive response.  We are looking forward to presenting the results from both the dose expansion portions of the monotherapy and combination with chemotherapy trials mid-year 2017."

About MabVax

MabVax Therapeutics Holdings, Inc. is a clinical-stage biotechnology company focused on the development of antibody-based products to address unmet medical needs in the treatment of cancer.  MabVax has discovered a pipeline of human monoclonal antibody products based on the protective immune responses generated by patients who have been vaccinated against targeted cancers with the Company's proprietary vaccines.  MabVax's HuMab-5B1 antibody is fully human and was discovered from the immune response of cancer patients vaccinated with an antigen-specific vaccine during a Phase I trial at Memorial Sloan Kettering Cancer Center.   The antigen the antibody targets is expressed on more than 90% of pancreatic cancers, making the antibody potentially broadly applicable to most patients suffering from this type of cancer.   Additional information is available at www.mabvax.com.

Forward Looking Statements