reovirus – Oral Cancer News

Positive data announced for Reolysin in head and neck cancers

Source: www.empr.com Author: staff Oncolytics Biotech announced positive top line data in its double-blinded randomized Phase 3 clinical study examining Reolysin in combination with carboplatin and paclitaxel in second-line patients with platinum-refractory, taxane-naïve head and neck cancers. Reolysin is a proprietary formulation of the human reovirus. A first analysis compared the relative percentages of patients in the test and control arms with tumors that had either stabilized or exhibited shrinkage. For the purposes of this endpoint, the definition of tumor stabilization was restricted to 0% growth only. Of the 105 total patients with evaluable metastatic tumors, 86% (n=50) of those in the test arm of the study exhibited tumor stabilization or shrinkage, compared with 67% of patients (n=55) in the control arm. This was statistically significant, with a p-value of 0.025. A second analysis examined the magnitude of tumor response on a per patient basis using a comparison of percentage tumor shrinkage at six weeks in each patient with evaluable metastatic tumors. This analysis showed that Reolysin in combination with carboplatin and paclitaxel was statistically significantly better than carboplatin and paclitaxel alone at stabilizing or shrinking metastatic tumors, yielding a p-value of 0.03

Oral Cancer Foundation News Team - A2012-12-23T08:28:26-07:00December, 2012|Oral Cancer News|

Cold comfort in quest for cancer cure

Source: www.theage.com.au Author: Rachel Browne Can the common cold cure cancer? It's a tempting idea and one on the cutting edge of a new medical research field called oncolytic virotherapy. Common viruses have become the latest weapon against cancer with a small Australian biotechnology group one of the leaders in the field. The idea has been around for some time. The classical Greek physician Hippocrates is often credited with the saying, "Give me the power to create a fever, and I shall cure any disease." More than 2500 years later, scientists, including a team from the University of Newcastle, are proving that the theory has merit. Not only did the classical Greeks make the observation, but there have been some instances of cancer patients entering spontaneous remission after exposure to certain viruses in the past century. There is the case of the eight-year-old African boy diagnosed with Burkitt's lymphoma at a Ugandan health clinic. He was exposed to the measles virus and over the next few weeks his tumour regressed completely and he entered remission. An incident documented by the British medical journal <em>The Lancet</em> in 1971 described the example of a Hungarian chicken farmer who had advanced colorectal cancer. An outbreak of the avian virus Newcastle disease hit the farm, the man became infected and went into remission. But only relatively recently have scientists clinically examined the interaction between viruses and cancers in the growing area of oncolytic virotherapy. Associate Professor Darren Shafren of the University of Newcastle has [...]

Oral Cancer Foundation News Team - A2012-04-22T08:56:20-07:00April, 2012|Oral Cancer News|

Viruses recruited as killers of tumors

Source: nytimes.com Author: Rachel Nuwer In 1951, a 4-year-old boy with leukemia contracted chickenpox. His liver and spleen, swollen by the cancer, soon returned to normal, and his elevated blood cell count fell to that of a healthy child. His doctors at the Laboratory of Experimental Oncology in San Francisco were thrilled by his sudden remission, but the blessing was short-lived. After one month, his leukemia returned and progressed rapidly until the child’s death. In the early 1900s, not much could be done for cancer patients. Unless surgeons could excise a tumor, the disease typically spelled a swift and inevitable end. But in dozens of published cases over the years, doctors noticed a peculiar trend: Struggling cancer patients sometimes enjoyed a brief reprieve from their malignancies when they caught a viral infection. It was not a coincidence. Common viruses sometimes attack tumor cells, researchers discovered. For decades, they tried to harness this phenomenon, to transform it into a cancer treatment. Now, after a long string of failures, they are nearing success with viruses engineered to kill cancer. “It’s a very exciting time,” said Dr. Robert Martuza, chief neurosurgeon at the Massachusetts General Hospital and professor of neuroscience at Harvard Medical School. “I think it will work out in some tumor, with some virus.” Candidates are already in advanced trials, he noted. Cancer cells are able to replicate wildly, but there’s a trade-off: They cannot ward off infection as effectively as healthy cells. So scientists have been looking for ways to [...]

Oral Cancer Foundation News Team - A2012-03-20T12:21:26-07:00March, 2012|Oral Cancer News|

Harmless virus could be an answer to cancer

Source: www.dailyfinance.com Author: Melly Alazraki You'd think that infecting a cancer patient with a virus would be the last thing a doctor would want to do. But what if it was a virus that attacks and kills cancer cells? That's exactly the premise that led to the founding of Oncolytics Biotech, a Calgary-based biotechnology company. It's about to begin Phase 3 trials that could pave the way for a marketable cancer treatment based on this technology in two years, says CEO Dr. Brad Thompson (pictured) in an interview with DailyFinance. "We're working on a product that is widely applicable to quite a few indications of cancer and is based on a naturally occurring virus that's commonly found in the environment and that happens to have a preference of growing in cancer cells as opposed to growing in normal tissue." It's called a reovirus (short for Respiratory Enteric Orphan virus), and it's a type which most people pick up by age 12 through inhalation or contact that causes few or no health problems. But when the virus enters cancer cells, it kills them. On-Off Switch Viruses, naturally, prefer cells that can't fight them off. And these cancer cells all have a common characteristic: They have a certain growth pathway, called the Ras pathway, turned on. "If a cell doesn't have that pathway turned on, nothing happens, so it's like an on-off switch for the virus's growth," Thompson explained. In the human body, very few normal cells have that Ras pathway turned [...]

Oral Cancer Foundation News Team - A2010-02-06T12:11:49-07:00February, 2010|Oral Cancer News|

Oncolytics Biotech Inc. announces issuance of 33rd U.S. patent

Source: www.benzinga.com/press-releases Author: press release Oncolytics Biotech Inc. ("Oncolytics") today announced that it has been granted its 33rd U.S. Patent, # 7,608,257, entitled "Sensitization of Chemotherapeutic Agent Resistant Neoplastic Cells With a Virus." The patent claims cover methods of using reovirus in combination with currently approved chemotherapeutic agents to treat patients that are refractory to those chemotherapeutic agents alone. "This patent supports our expanding clinical program, including our first Phase III study, looking at Reolysin(R) in combination with a range of chemotherapeutic agents," said Mary Ann Dillahunty, Vice President of Intellectual Property for Oncolytics. "Many of our studies enroll patients that did not previously respond to chemotherapy, including our Phase III study in patients with platinum refractory head and neck cancers." About Oncolytics Biotech Inc. Oncolytics is a Calgary-based biotechnology company focused on the development of oncolytic viruses as potential cancer therapeutics. Oncolytics' clinical program includes a variety of human trials including a Phase III trial in head and neck cancers using Reolysin(R), its proprietary formulation of the human reovirus.

Oral Cancer Foundation News Team - A2009-10-27T05:00:12-07:00October, 2009|Oral Cancer News|

Combination of chemo and common virus continues to show remarkable results in advanced cancer patients

Source: www.newswise.com Author: press release Chemotherapy—as any cancer patient will tell you—is not for the faint of heart, but it can kill many forms of cancer. Some form of chemotherapy, originally discovered as a cancer treatment almost seventy years ago, is still routinely prescribed for most types of the disease. The treatment works by targeting fast-growing cells, like those typically found in rapidly growing tumors. But while chemotherapy can shrink tumors, they often grow back and become resistant, or refractory to chemotherapy. To combat this resistance, chemotherapy is now often used in combination with other treatments that have different mechanisms for attacking and killing cancer cells. But doctors must be cautious when combining treatments to ensure that the regimen does not become too toxic for patients to tolerate. The goal is to introduce drugs that can be used synergistically with chemotherapy to not only extend life, but to provide cancer patients with good quality of life while undergoing treatment. One such complimentary drug may be Reolysin®, now being developed from the naturally occurring reovirus, by Oncolytics Biotech Inc. The reovirus preferentially replicates in cancer cells with an activated RAS pathway, while sparing normal cells. Approximately two thirds of all cancers have an activated RAS pathway, including most metastatic disease. Viral replication within cancer cells causes them to burst open, releasing more virus to infect other cells. Reolysin is demonstrating impressive results in clinical trials on its own, but particularly in combination with certain chemotherapeutics. Recently, Oncolytics announced positive results from [...]

Oral Cancer Foundation News Team - A2009-04-04T05:44:15-07:00April, 2009|Oral Cancer News|

Virus accomplice helps drugs fight cancer

Source: www.newscientist.com Author: Andy Coghlan A virus that harmlessly infects most people at some time in their lives appears to help anti-cancer drugs destroy tumours, or at least keep them in check. Known as a reovirus, it destroys tumour cells because they lack the cellular machinery that keeps the virus in check in healthy cells. Results released last week from two studies in which patients with head and neck cancer were injected with the virus alongside anti-cancer drugs reveal that cancers either stopped growing or shrank in almost all recipients. Furthermore, the patients had cancers that had become resistant to all existing therapies. "Some patients had very aggressive tumour shrinkage of as much as 95%," says Brad Thompson, CEO of Canadian company Oncolytics Biotech, which has been developing the virus as a product called Reolysin. In one trial, led by Kevin Harrington at the Royal Marsden Hospital in London, 8 out of 9 patients responded positively after the virus plus two standard anti-cancer drugs, paclitaxel and carboplatin, had been infused into their bloodstream. In four, tumours stopped growing, and in another four, tumours shrank dramatically. In the other trial, also near London at the Royal Surrey Hospital, 9 out of 11 patients responded well after receiving the virus plus the anti-cancer drug docetaxel. Genetic flaw Taken together, the results suggest the virus does help in some way. "Usually, only 10% of patients respond when the cancer comes back and they're having their second course of treatment," says Thompson. The virus [...]

Oral Cancer Foundation News Team - A2008-11-07T14:05:54-07:00November, 2008|Oral Cancer News|