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Vaccine Issues Author: Staff Editor Last Updated: Sep 7, 2017 - 10:06:33 PM

Personalized Brain Tumor Vaccine Helps Patients Live Longer

By Staff Editor
Jul 2, 2014 - 4:14:14 PM

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( - CHICAGO, July 2, 2014 -- Patients newly diagnosed with glioblastoma multiforme (GBM) and treated with an experimental cancer vaccine made from the patient's own tumor in addition to standard of care lived longer compared to those who received standard of care alone, according to new results from a study involving Northwestern Medicine researchers and released on July 1.

Glioblastomas are fast growing tumors that invade normal brain tissue. The disease is often resistant to treatments such as chemotherapy and radiation and median survival is approximately 15 months from the point of first diagnosis.

"Improving the survival for GBM patients is an important goal for many of us here at Northwestern," said the study's principal investigator Andrew Parsa, MD, PhD who is chair of neurological surgery at Northwestern Memorial Hospital and the Michael J. Marchese Professor and chair of the department of neurological surgery at Northwestern University Feinberg School of Medicine. "This brain cancer does not discriminate. It affects all ages, genders and races and less than 5 percent of glioblastoma patients survive five years. With new research and studies like this, we hope to one day write a different ending to the story by turning this into a chronic disease - one that can be treated with medication."

Typically, patients newly diagnosed with a glioblastoma undergo surgery to remove their tumor followed by radiation and temozolomide, an oral chemotherapy drug. This phase 2 single-arm trial consisted of 46 patients and added a vaccine made from their tumor to their treatment. The vaccine is unique to each patient and is engineered to trigger an immune system response to kill tumor cells that may remain following surgery.

Results showed the patients who added the vaccine to their treatment lived longer. More specifically, 50 percent of the patients enrolled in the trial lived for two years, an encouraging result for a cancer that often kills patients within one year. The patients enrolled in this trial were treated at eight centers across the country including Northwestern Memorial.

Median overall survival for patients enrolled in the trial is 23.8 months. For the standard of care alone, median overall survival rate is 14.6 months. The trial also monitored each patient's progression-free survival, which is the length of time a patient lives with the tumor controlled. Vaccine treated patients had a median progression-free survival of nearly 18 months, approximately two- to three-times longer than patients treated with radiation and temozolomide alone.(  )In addition, 22 percent of patients enrolled in the trial were alive at 24 months and continue to be monitored.

Based on the positive phase 2 trial results, Agenus Inc, the biopharmaceutical company developing the vaccine, is exploring partnerships for a randomized, Phase 3 trial. A successful trial could lead to the vaccine potentially being approved to treat brain tumors, making it one of only a few approved therapeutic cancer vaccines and treatments for GBM patients.

While new findings such as this one continue to extend the lives of patients with glioblastoma, for the moment, it remains one of the most dreaded diagnoses, which is why Parsa, co-leader of the Translational Research in Solid Tumors Program at the Robert H. Lurie Comprehensive Cancer Center of Northwestern University, and other Northwestern Medicine researchers are also studying the vaccine for GMB patients whose tumor returns.  The Phase 2 recurrent and newly diagnosed trials are being led by Parsa and primarily have been supported through funding from the American Brain Tumor Association, Accelerated Brain Cancer Cure, National Brain Tumor Society and National Cancer Institute Special Programs of Research Excellence.

"A glioblastoma is the most common primary malignant brain tumor and affects up to 17,000 Americans annually," said Jeffrey Raizer, MD, co-director of the Northwestern Brain Tumor Institute, director of medical neuro-oncology at the Lurie Cancer Center and the principal investigator for the study at Northwestern Memorial. "Vaccine therapy has the potential to offer a safer and less toxic cancer treatment to patients. While conventional therapies sometimes cause debilitating side effects, this treatment is simply a series of injections that is increasing the survival of patients in early trials. Importantly, it can be combined with other therapies allowing us to attack these tumors from different approaches. "

To learn more about the clinical trial, call 312-695-2047 or email kskir[email protected].

About Northwestern Medicine®
Northwestern Medicine® is the collaboration between Northwestern Memorial HealthCare and Northwestern University Feinberg School of Medicine around a strategic vision to transform the future of healthcare.  It encompasses the research, teaching and patient care activities of the academic medical center. Sharing a commitment to superior quality, academic excellence and patient safety, the organizations within Northwestern Medicine comprise more than 9,000 clinical and administrative staff, 3,100 medical and science faculty and 700 students. The entities involved in Northwestern Medicine remain separate organizations. Northwestern Medicine is a trademark of Northwestern Memorial HealthCare and is used by Northwestern University.

About Northwestern Memorial Hospital
Northwestern Memorial is one of the country's premier academic medical center hospitals and is the primary teaching hospital of the Northwestern University Feinberg School of Medicine. Along with its Prentice Women's Hospital and Stone Institute of Psychiatry, the hospital has 1,705 affiliated physicians and 6,769 employees.  Northwestern Memorial is recognized for providing exemplary patient care and state-of-the art advancements in the areas of cardiovascular care; women's health; oncology; neurology and neurosurgery; solid organ and soft tissue transplants and orthopaedics.

Northwestern Memorial has nursing Magnet Status, the nation's highest recognition for patient care and nursing excellence. Northwestern Memorial ranks 6(th) in the nation in the U.S. News & World Report 2013-14 Honor Roll of America's Best Hospitals. The hospital is recognized in 14 of 16 clinical specialties rated by U.S. News and is No. 1 in Illinois and Chicago in U.S. News' 2013-14 state and metro rankings, respectively. For 14 years running, Northwestern Memorial has been rated among the "100 Best Companies for Working Mothers" guide by Working Mother magazine. The hospital is a recipient of the prestigious National Quality Health Care Award and has been chosen by Chicagoans as the Consumer Choice according to the National Research Corporation's annual survey for 15 consecutive years.

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