“Researchers are hoping that a proposed phase II study exploring use of the Optune system in patients with recurrent grade III malignant glioma will expand the indications for the tumor treating fields (TTFields) device beyond its current FDA-approved use in recurrent grade IV glioblastoma.
“Daniel O’Connell, MD, a neuro-oncologist at UCLA’s Geffen School of Medicine, discussed his proposal with Targeted Oncology at the 21st Annual Scientific Meeting of the Society of Neuro-Oncology (SNO) held November 17 to 20, 2016 in Scottsdale, Arizona.”
“The PD-1 inhibitor nivolumab (Opdivo) was successfully combined with radiotherapy alone or concurrently with temozolomide for patients with newly-diagnosed glioblastoma multiforme (GBM) in cohorts 1c and 1d from the phase I CheckMate-143 study, according to findings presented at the 2016 Society for Neuro-Oncology Annual Meeting.
” ‘The research question was if treatment with nivolumab to block immune checkpoint pathways could potentiate an antitumor immune response and have synergistic effects with radiotherapy or chemoradiotherapy in patients with newly diagnosed GBM,’ stated first author by Antonio Omuro, MD, of the Memorial Sloan Kettering Cancer Center.”
“Cancerous brain tumors are notorious for growing back despite surgical attempts to remove them – and for leading to a dire prognosis for patients. But scientists are developing a new way to try to root out malignant cells during surgery so fewer or none get left behind to form new tumors. The method, reported in the journal ACS Nano, could someday vastly improve the outlook for patients.
“Moritz F. Kircher and colleagues at Memorial Sloan Kettering Cancer Center point out that malignant brain tumors, particularly the kind known as glioblastoma multiforme (GBM), are among the toughest to beat. Although relatively rare, GBM is highly aggressive, and its cells multiply rapidly. Surgical removal is one of the main weapons doctors have to treat brain tumors. The problem is that currently, there’s no way to know if they have taken out all of the cancerous cells. And removing extra material “just in case” isn’t a good option in the brain, which controls so many critical processes. The techniques surgeons have at their disposal today are not accurate enough to identify all the cells that need to be excised. So Kircher’s team decided to develop a new method to fill that gap.
“The researchers used a handheld device resembling a laser pointer that can detect “Raman nanoprobes” with very high accuracy. These nanoprobes are injected the day prior to the operation and go specifically to tumor cells, and not to normal brain cells. Using a handheld Raman scanner in a mouse model that mimics human GBM, the researchers successfully identified and removed all malignant cells in the rodents’ brains. Also, because the technique involves steps that have already made it to human testing for other purposes, the researchers conclude that it has the potential to move readily into clinical trials. Surgeons might be able to use the device in the future to treat other types of brain cancer, they say.”
“Agenus Inc said its experimental cancer vaccine helped brain tumor patients live nearly twice as long compared with those who received standard of care treatment…
“The drug, when given in addition to standard treatment, extended median overall survival in 50 percent of newly-diagnosed glioblastoma multiforme (GBM) patients to two years in a mid-stage study.
“GBM patients, who tend to succumb to the disease within one year, are usually treated with a combination of radiation and the chemotherapy drug temozolomide.”
Editor’s note: Prophage is a new “cancer vaccine” that might boost a patient’s own immune system to help fight cancer. Cells from each patient’s tumor are used to personalize Prophage specifically for the patient. This article discusses results from a clinical trial testing Prophage in volunteer patients with glioblastoma multiforme (GBM). Some of the patients in the trial were treated with Prophage in combination with standard radiation and chemotherapy treatment, while for comparison, others were treated only with standard radiation and chemo. The results showed that adding Prophage to standard treatment can help some patients live longer.