{"id":84452,"date":"2018-06-27T12:46:03","date_gmt":"2018-06-27T12:46:03","guid":{"rendered":"http:\/\/www.bnreport.com\/poliovirus-treatment-helped-patients-with-deadly-brain-tumors-live-longer\/"},"modified":"2018-06-27T12:46:03","modified_gmt":"2018-06-27T12:46:03","slug":"poliovirus-treatment-helped-patients-with-deadly-brain-tumors-live-longer","status":"publish","type":"post","link":"https:\/\/www.bnreport.com\/en\/poliovirus-treatment-helped-patients-with-deadly-brain-tumors-live-longer\/","title":{"rendered":"Poliovirus treatment helped patients with deadly brain tumors live longer"},"content":{"rendered":"

Few treatment options are available to people facing a second battle with a particularly fatal type of brain tumor called glioblastoma. But dosing the tumor with a genetically modified poliovirus \u2014 one that doesnt cause the eponymous, devastating disease \u2014 may give these patients more time<\/a>, a small clinical study suggests.<\/p>\n

Of 61 people with recurring glioblastoma who were treated with the modified virus, 21 percent were alive after three years. In a \u201chistorical\u201d comparison group of 104 patients, who would have been eligible for the treatment but died before it was available, 4 percent lived as long, researchers report online June 26 in the New England Journal of Medicine<\/em>.<\/p>\n

Two patients who received the altered virus are still alive today, six years after treatment. \u201cTheyve been able to lead largely normal lives, and we almost never see that with these brain tumors,\u201d says neuro-oncologist and study coauthor Darell Bigner of Duke University Medical Center.<\/p>\n

The standard treatment for glioblastoma is surgery, radiation and chemotherapy, but the cancer often recurs, Bigner says. Usually patients do not survive longer than 20 months after being diagnosed; those with a recurrence typically live less than a year. <\/p>\n

Poliovirus, which can cause paralysis and death, infects nerve cells through a cell surface protein that also shows up on tumor cells, including in glioblastoma. In previous work, the Duke research team swapped out the genetic machinery that allows the virus to commandeer and destroy nerve cells with a part from human rhinovirus, the common cold culprit. But this change did not prevent the poliovirus from killing tumor cells. The treatment also triggers the immune system to target the brain tumors.<\/p>\n

In the new study, the team delivered a single dose of the virus to patients, infused over 6.5 hours through a small tube traversing the skull and directly into the tumor. None of the patients who received the revamped virus developed symptoms related to polio.<\/p>\n

Both people who have survived for six years developed glioblastoma again, but were successfully treated a second time with the altered poliovirus. \u201cThere doesnt seem to be any resistance to re-treatment,\u201d Bigner says.<\/p>\n

Bigner and colleagues plan to study the effects of combining the poliovirus treatment with other drugs, such as checkpoint inhibitors, which may further boost the immune response against the brain tumors.<\/p>\n

There have been a few other studies using different viruses to target glioblastoma in recent years. These approaches have also benefitted small numbers of patients, says neurosurgical oncologist E. Antonio Chiocca of Brigham and Womens Hospital in Boston, who was not involved in the new research.<\/p>\n

\u201cWe must be optimistic, but with caution,\u201d Chiocca says. \u201cThe history of glioblastoma treatments is littered with lots of early clinical trials that appear to show very promising and encouraging results,\u201d which did not prove to be meaningful in later trials.<\/p>\n

<\/a><\/strong> <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Few treatment options are available to people facing a second battle with a particularly fatal type ..<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-84452","post","type-post","status-publish","format-standard","hentry","category-science"],"yoast_head":"\nPoliovirus treatment helped patients with deadly brain tumors live longer - Business News Report<\/title>\n<meta name=\"description\" content=\"Few treatment options are available to people facing a second battle with a particularly fatal type ..\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bnreport.com\/en\/poliovirus-treatment-helped-patients-with-deadly-brain-tumors-live-longer\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Poliovirus treatment helped patients with deadly brain tumors live longer - 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