DNA – Page 7 – Oral Cancer News

Perceptronix reports clinical study underway to evaluate OralAdvance(TM) for early detection of oral cancer

Source: www.earthtimes.org Author: press release Perceptronix Medical Inc. announces that a clinical study of OralAdvance(TM), a test for the early detection of oral cancer, is now underway. The clinical study will assess the performance of OralAdvance(TM) compared to the gold standard biopsy and histology for its ability to differentiate between visually suspicious oral lesions with cancer or pre-cancer and visually suspicious benign oral lesions. "Unlike many other types of cancer, the incidence and mortality rates of oral cancer have not shown significant improvement over the past 30 years. By the time most oral cancers are diagnosed, they are already symptomatic late-stage disease. At Perceptronix we are dedicated to changing this paradigm towards early detection for better patient outcomes," says Dr. Bojana Turic, President and CEO of Perceptronix. Patients for the blinded study will be recruited from the BC Cancer Agency's Vancouver and Fraser Valley Centres. "We are pleased to be able to participate in the evaluation of the test in a clinical setting with technology that was developed in partnership with scientists at the BC Cancer Agency's Research Centre, and we are hopeful that the test will have a positive impact on the early detection of oral cancer," says Dr. Allan Hovan (Provincial Professional Practice Leader, Program in Oral Oncology/Dentistry, BC Cancer Agency). Currently, the death rate for oral cancer is higher than that of cervical cancer, Hodgkin's disease, cancer of the brain, liver, testes, kidney, or malignant melanoma. High death rate associated with oral cancer could be reduced significantly [...]

Oral Cancer Foundation News Team - A2009-02-09T16:56:36-07:00February, 2009|Oral Cancer News|

Variations in gene DNA boost drinkers’ cancer risk

Source: www.washingtonpost.com Author: staff Variations in the DNA of certain genes can increase the risk of cancer in people who drink alcohol, according to researchers who reviewed studies on alcohol consumption, genetic polymorphisms and cancer. Their analysis suggests that such variations, called gene polymorphisms, in two enzymes -- alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH) -- involved in metabolizing alcohol significantly increase alcohol drinkers' risk of cancers of the head and neck and the esophagus. The researchers looked at the effect of gene variations in other enzymes involved in alcohol and folate metabolism but found there wasn't enough data to fully assess the effect of those gene variants on cancer risk. They said that currently available data does not allow for a quantitative evaluation by meta-analysis of the link between gene variations and cancer risk in people who drink alcohol. "We have highlighted the need for large, multicenter studies and for approaches to the study of multiple polymorphisms," wrote Dr. Nathalie Druesne-Pecollo and colleagues at the French National Institute of Agronomical Research. The review was published in the February issue of the The Lancet Oncology. Previous research has shown a clear link between alcohol consumption and health risk, according to background information in the review. Recent figures show that drinking alcohol was a major contributing factor in the development of almost 400,000 cancers worldwide in 2002. In that same year, 323,900 cancer deaths (3.6 percent of all cancer deaths) were alcohol-related. Source: The Lancet Oncology, news release, Jan. 30, 2009

Oral Cancer Foundation News Team - A2009-02-01T07:18:31-07:00February, 2009|Oral Cancer News|

HPV testing followed by cytology and repeat HPV testing may improve cervical cancer screening

Source: JNCI Journal of the National Cancer Institute 2009 101(2):69 Author: staff The use of human papillomavirus (HPV) DNA testing as an initial screening step followed by triage with a standard Pap test (cytology) and repeat HPV DNA testing may increase the accuracy of cervical cancer screening, according to a study in the Jan. 13 online issue of the Journal of the National Cancer Institute. Compared to cytology alone, the screening strategy improved detection of precancerous growths without a substantial increase in the number of false-positive tests. Randomized trials have shown that using DNA testing for HPV—which is known to cause cervical cancer—in screening programs would increase detection of cervical intraepithelial neoplasia (CIN) compared with cytology. However, HPV DNA testing also results in a substantial increase in false-positive tests, which lead to unnecessary and costly retesting. In the current study, Joakim Dillner, M.D. of Lund University in Malmö, Sweden, and colleagues compared the efficacy of 11 different screening strategies that used HPV DNA testing, cytology, or a combination of the two. To evaluate the different strategies the investigators retrospectively analyzed data from 6,257 women who were enrolled in the intervention arm of a large randomized screening trial, called Swedescreen, in which HPV DNA testing was used in addition to standard cytology. As seen in previous trials, the use of HPV DNA testing in conjunction with cytology increased the screening efficacy, detecting 35 percent more cases of CIN grade 3 or worse, compared with cytology alone. The strategy, however, doubled the [...]

Oral Cancer Foundation News Team - A2009-01-26T08:49:12-07:00January, 2009|Oral Cancer News|

SensiGen HPV assay enables major breakthrough in diagnosis and treatment of head and neck cancer

Source: www.marketwatch.com Author: press release SensiGen LLC, a privately held biotechnology company focused on developing proprietary gene-based molecular diagnostic tests announced today a new program to make the Company's AttoSense(TM) HPV assay available to head and neck cancer researchers worldwide after recent studies showed that the success or failure of various treatment options (chemotherapy, radiation, extensive surgery) are largely determined by the viral load of Human Papillomavirus (HPV) in tissue samples from patients. These studies, carried out by the Head and Neck Oncology Team at the University of Michigan and published in the Journal of Clinical Oncology, demonstrate that head and neck cancer patients with higher concentrations of HPV, a virus long known to be associated with head and neck cancer, cervical cancer, and others, are much more likely to respond to organ-sparing chemotherapy than patients without high concentrations of the virus. This finding could offer significant hope for thousands of head and neck cancer patients facing uncertain and unpleasant treatments. "The data clearly show the importance of quantitative HPV testing in patients diagnosed with head and neck cancer," said Dr. Thomas Carey, leader of the University of Michigan based team that reported the breakthrough results this summer. "With the AttoSense(TM) HPV test and other biomarkers, we may soon be able to pinpoint the right therapy for each patient and maximize the chance of success on the first try, thus reducing the number of people who must endure multiple costly and uncomfortable treatments." SensiGen's AttoSense(TM) diagnostic assays are capable of [...]

Oral Cancer Foundation News Team - A2008-09-25T09:07:59-07:00September, 2008|Oral Cancer News|