DNA – Oral Cancer News

Researchers discover urine-based test to detect head and neck cancer

Source: www.newswise.com Author: Michigan Medicine - University of Michigan Researchers from the University of Michigan Health Rogel Cancer Center have created a urine-based test that detects pieces of DNA fragments released by head and neck tumors. The test could potentially facilitate early detection of this cancer type, which currently does not have a reliable screening method. Human papillomavirus (HPV) is widely recognized for causing cervical cancer, but is increasingly found to cause cancers in the mouth, throat and other head and neck regions. Early detection is critical because detecting a cancer at an earlier stage can lead to better outcomes for patients. Using whole genome sequencing, the Rogel group showed that cell-free DNA fragments released by tumor cells, which are passed on from the bloodstream into urine through the kidneys, are predominantly ultra-short, with fewer than 50 base pairs. Given their small size, these fragments are likely to be missed using conventional urine or blood-based liquid biopsy tests in detecting circulating tumor DNA (ctDNA). The research was led by Muneesh Tewari, M.D., Ph.D., professor of hematology and oncology, J. Chad Brenner, Ph.D., associate professor of otolaryngology-head and neck surgery, and Paul L. Swiecicki, M.D., associate medical director for the Oncology Clinical Trials Support Unit at Rogel. Initial results are published in JCI Insight. “In this study we provide evidence to support the hypothesis that conventional assays do not detect ultrashort fragments found in urine, since they are designed to target longer DNA fragments. Our team used an unconventional approach to [...]

Oral Cancer Foundation News Team - A2024-04-17T05:52:41-07:00April, 2024|Oral Cancer News|

Potential new treatment for head and neck cancers

Source: news.med.miami.edu Author: Charlotte Schubert, Ph.D. Treatment for head and neck cancers is largely stuck in the past. Patients typically receive some combination of surgery, radiation and chemotherapy, treatment approaches that have not changed much over the decades. About 450,000 people die of head and neck cancer worldwide each year. A new study delves into the molecular underpinnings of some of these tumors and posits a more targeted approach toward treatment. The study provides evidence that some head and neck cancers may respond to the drug olaparib or the combination of olaparib with decitabine. Both olaparib and decitabine are approved for use in other tumors but are not used routinely for head and neck cancers. “There has not been a rationale to test them in these tumors,” said study co-leader Lluis Morey, Ph.D., a scientist at Sylvester Comprehensive Cancer Center, part of the University of Miami Miller School of Medicine. The new study provides such a rationale. The findings are in cells and preclinical models of disease. But Sylvester scientists are already conducting further research that could potentially lead to clinical trials in certain head and neck cancer patients. The new study appeared in the journal Genes & Development. Targeting the Histone Molecule Dr. Morey became intrigued by an earlier study showing that about 20% of head and neck tumors had specific types of defects in a molecule called a histone. Histones associate tightly with DNA and help control everything from replication to cell division. Dr. Morey, an associate professor [...]

Oral Cancer Foundation News Team - A2024-02-02T09:51:03-07:00February, 2024|Oral Cancer News|

Another setback for vapes? Using the devices can increase the risk of oral cancer as much as cigarettes do, study finds

Source: www.dailymail.co.uk Author: Cassidy Morrison, Senior Health Reporter DailyMail.com Using a vape causes cancer-linked DNA damage to the mouth at the same rate as using a cigarette does, study finds. The latest study from researchers at the University of Southern California (USC) further pokes holes in the notion that vaping e-cigarettes such as Juul and PuffBar devices are a healthier alternative to smoking. Vapers who regularly use e-cigarettes saw just as much damage to DNA in their mouths as smokers of regular tobacco cigarettes, raising the specter of chronic diseases including cancer. Flavor pods in particular were the most dangerous. Cancers are caused by such DNA damage, also referred to as gene mutations that, over time, may stop working normally or grow out of control and become cancerous. This is not the first study to come to this conclusion. Canadian researchers found that mice exposed to flavored vapes consistently suffered serious cellular and molecular damage to their lungs. Dr Ahmad Besaratinia, senior author of the study and public health experts at USC, said: ‘For the first time, we showed that the more vapers used e-cigarettes, and the longer they used them, the more DNA damage occurred in their oral cells.’ Smoking exposes the cells coating the inside of the mouth, the airways, and the lungs to dozens of powerful chemical carcinogens. The cells in parts of the body that are directly exposed to smoke are damaged most acutely, with 150 mutations found to occur in each lung cell within one [...]

Oral Cancer Foundation News Team - A2023-02-18T14:11:07-07:00February, 2023|Oral Cancer News|

Thousands of volunteers in the West Midlands join NHS trial to spot deadly cancers

Source: www.england.nhs.uk Author: staff Over 140,000 people, of which almost 18,500 are from the West Midlands, have volunteered to take part in the world’s largest trial of a blood test that can detect more than 50 types of cancer, as part of the latest National Health Service (NHS) drive to catch the disease when it is generally easiest to treat. In just one year since the NHS-Galleri trial began, volunteers from across the country have come forward to have a blood test at mobile clinics in convenient locations, including supermarket and leisure centre car parks and places of worship. Participants will now be invited to attend two further appointments, spaced roughly 12 months apart. The NHS Long Term Plan committed to increasing the proportion of cancers caught early, when they are easier to treat, from half to three in four. NHS ‘one stop shops’ have also already delivered 190,000 additional tests in the Midlands, including for cancer, since the rollout began, with seven community diagnostic centres (CDCs) in the West Midlands offering a range of diagnostic tests and other services closer to patients’ homes, often in the heart of local communities. More CDCs are also in development and will become operational over the next three years. This trial is part of radical NHS action to tackle cancer, that also includes the successful rollout of targeted lung trucks across the country, with thousands of people invited for checks every month in mobile vehicles, and hundreds of cancers diagnosed earlier. Initial research [...]

Oral Cancer Foundation News Team - A2022-07-18T07:05:51-07:00July, 2022|Oral Cancer News|

Personalised cancer vaccine trials produce ‘really hopeful’ results

Source: news.sky.com Author: Thomas Moore, Science correspondent @SkyNewsThomas A personalised cancer vaccine made from individual patients' own DNA has produced "really hopeful" early results. The ground-breaking jab, created using technology perfected in the COVID pandemic, is being given to patients after they complete conventional treatment for head and neck cancers. Patients have a high chance of the cancer returning. Preliminary data from a clinical trial being run at The Clatterbridge Cancer Centre show that none of the first eight patients given the jab have relapsed, even after several months. But the cancer has returned in two of eight patients who weren't immunised. The numbers are far too small to draw firm statistical conclusions. But Professor Christian Ottensmeier, a consultant medical oncologist and director of clinical research at the centre, told Sky News he was "cautiously optimistic". "I am really hopeful, yes," he said. "I am quite excited about it. All the data are pointing in the right direction." A small clinical trial of the vaccine on patients with ovarian cancer in France and the US is also showing promising results How does the vaccine work? The jab, codenamed TG4050, is made by a French company called Transgene using similar technology that produced AstraZeneca's COVID vaccine. DNA from an individual patient's tumour is cut and pasted into a harmless virus. When the genetically modified virus is injected into the body, it trains the immune system to be on watch for cancer cells, hopefully destroying them at an early stage before there [...]

Oral Cancer Foundation News Team - A2022-07-06T06:56:39-07:00July, 2022|Oral Cancer News|

Liquid biopsy provides accurate, fast Dx of HPV-associated head and neck cancer

Source: www.medpagetoday.com Author: Mike Bassett, Staff Writer, MedPage Today The use of liquid biopsy for the diagnosis of human papillomavirus (HPV)-associated head and neck squamous cell carcinoma (HNSCC) was more accurate, faster, and less expensive than standard tissue-based biopsies, according to a prospective observational study. The sensitivity and specificity of this circulating tumor HPV DNA-based approach were 98.4% and 98.6%, respectively, with positive and negative predictive values of 98.4% and 98.6%, reported Daniel L. Faden, MD, of Massachusetts General Hospital and Harvard Medical School in Boston, and colleagues. The diagnostic accuracy of this non-invasive approach was significantly higher than standard of care (Youden index 0.968 vs 0.707, P<0.0001), they noted in Clinical Cancer Research. In addition, liquid biopsy reduced the time to diagnosis from a median of 41 days to 15 days, and estimated costs associated with this method were about 36% to 38% less than the traditional biopsy approach. "Currently the way we diagnose HPV-associated cancer is either with a needle biopsy of a neck lymph node or a tissue biopsy from the oropharynx -- and these approaches have a couple of different limitations," Faden told MedPage Today. Not only are they invasive and painful for patients, but needle biopsy of a neck lymph node has high failure rates due to a lack of adequate cellular material. "So, patients might have to undergo a repeat biopsy to get the diagnosis we are waiting for," he noted. "That adds time to diagnosis, and we know that time from presentation to [...]

Oral Cancer Foundation News Team - A2021-12-03T05:54:26-07:00December, 2021|Oral Cancer News|

Two markers help predict head and neck cancer prognosis

Source: labblog.uofmhealth.org Author: news release, University of Michigan Health Rogel Cancer Center A new study from the University of Michigan Health Rogel Cancer Center finds circulating tumor DNA, or ctDNA, levels can predict as early as two weeks after starting treatment which patients are likely to have good outcomes. At the same time, specialized MRI and PET scans two weeks after starting chemoradiation also correlated with outcomes. “Rates of throat cancer have steadily increased in recent years, driven by HPV infections, fueling the need for biomarkers to help guide treatment decisions, especially for locally advanced disease,” said senior study author J. Chad Brenner, Ph.D., associate professor of otolaryngology at Michigan Medicine. “Quantitative imaging of metabolism, local blood volume density and cell density from PET and MRI scans have shown both prognostic value in predicting treatment outcome as well as utility in selecting patients for additional focal radiation treatment,” said study author Yue Cao, Ph.D., professor of radiation oncology and radiology at Michigan Medicine. The researchers conducted a randomized trial of patients with stage 3 oropharyngeal squamous cell carcinoma. In total, 93 patients had imaging and 34 also had blood tests before starting chemoradiation and again at two, four and seven weeks after treatment. The study found that HPV ctDNA clearance at two weeks, but not at four weeks, predicted outcomes. The metabolism, local blood density and cell density before radiation therapy or at two weeks after starting treatment predicted outcomes as well. These early predictor biomarkers could help determine which [...]

Oral Cancer Foundation News Team - A2021-11-17T07:43:52-07:00November, 2021|Oral Cancer News|

Saliva testing may allow early detection of human papillomavirus–driven head and neck cancers

Source: medicalxpress.com Author: Elsevier Cancer causing high-risk human papillomaviruses (HR-HPV) are responsible for the rising incidence of HR-HPV–driven head and neck cancers (HNC), particularly oropharyngeal cancers (OPC, or throat cancers). Investigators have determined that HR-HPV DNA can be detected in saliva in most patients with HPV-driven OPC at the time of diagnosis. This work highlights a potentially life-saving screening program based on salivary HR-HPV DNA testing for early cancer detection and patient monitoring. Their findings appear in The Journal of Molecular Diagnostics. "Despite the upsurge in HPV-driven HNC, there are no early detection methods or screening strategies for this cancer type, unlike cervical cancer, which is caused by the same virus. Biomarkers enabling early detection, monitoring and disease prognostication are warranted to combat the rising incidence of HPV-driven OPC," observed lead investigator Chamindie Punyadeera, Ph.D., head, Saliva & Liquid Biopsy Translational Laboratory, School of Biomedical Science, Faculty of Health, Queensland University of Technology (QUT), and Translational Research Institute, Brisbane, QLD, Australia. Dr. Punyadeera and her colleagues investigated the efficacy of salivary HPV detection as a biomarker of HPV-HNC and survival patterns in patients with OPC to evaluate the utility of salivary HR-HPV as a prognostic biomarker for OPC. Saliva testing was performed on 491 patients at the time of first diagnosis of HNC and 10 patients with recurring HNC. Forty-three percent were positive for salivary HR-HPV DNA. HPV16, a high-risk strain of the virus, was detected in 92% of the HPV-positive saliva samples. The vast majority of HPV-HNC had arisen [...]

Oral Cancer Foundation News Team - A2021-09-22T09:38:25-07:00September, 2021|Oral Cancer News|

World’s largest trial Of “Game-Changer” early cancer test begins in UK

Source: www.iflscience.com Author: Maddy Chapman Yesterday, England's National Health Service (NHS) launched the world’s largest trial of a blood test that can detect more than 50 types of cancer before symptoms appear. The trial aims to recruit 140,000 volunteers from different ethnic backgrounds, aged between 50 and 77, and living in eight areas across England. The test itself, the Galleri test, is a simple blood test that checks for the earliest signs of cancer. Ideally, it can be used to identify cancers at their earliest stages – stage one or two. When it comes to detecting cancer, the earlier the better. A diagnosis at stage one can increase chances of survival by five to 10 times, compared to a diagnosis at stage four. The new test, developed by healthcare company GRAIL, is particularly effective at identifying cancers that are difficult to diagnose early – head and neck, bowel, lung, pancreatic, and throat cancers, for example. “This quick and simple blood test could mark the beginning of a revolution in cancer detection and treatment here and around the world,” NHS chief executive Amanda Pritchard said in a statement. “By finding cancer before signs and symptoms even appear, we have the best chance of treating it and we can give people the best possible chance of survival.” The Galleri test works by identifying fragments of DNA that have been shed by tumors into the bloodstream. Participants in the trial, who must not have received a cancer diagnosis in the last three years, [...]

Oral Cancer Foundation News Team - A2021-09-15T06:09:46-07:00September, 2021|Oral Cancer News|

Chemotherapy and radiation therapy issues: What audiologists need to know

Source: journals.lww.com Author: A. Croutch, Carl AuD With hearing loss, tinnitus, and imbalance as among the numerous side-effects of cancer treatment,1 audiologists play a critical role in monitoring patients receiving chemotherapy and radiation therapy. Sensorineural hearing loss (SNHL) attributed to chemotherapy and radiation therapy is usually permanent, making audiometric monitoring essential to detect its early occurrence.2 Cisplatin, carboplatin & radiation therapy Chemotherapy is used to treat cancer, control the growth and spread of cancer cells, and ease cancer symptoms. Cisplatin and carboplatin are two common antineoplastic agents used to treat testicular, ovarian, breast, esophageal, lung, and head and neck cancers among others. Besides hearing loss, these can cause other side effects including kidney, gastrointestinal disorders, allergic reactions, decreased immunity to infections, and hemorrhaging. Cisplatin was first found to have cytotoxic properties in the 1960s, and in 1978 was the first platinum compound approved by the FDA for cancer treatment.3 On the other hand, carboplatin is less potent than cisplatin and does have fewer side effects, especially on kidney problems.3 Both drugs work by interfering with DNA repair mechanisms causing DNA damage and inducing apoptosis in cancer cells. Cancerous cells cannot limit cell division as do normal cells. Normal cells cease dividing when they encounter similar cells whereas cancerous cells do not. The effectiveness of chemotherapy is determined by its ability to damage the RNA or DNA that gives the cell instructions to copy itself. The cells will die if they are unable to divide. The more quickly they are dividing, [...]

Oral Cancer Foundation News Team - A2021-09-09T06:48:49-07:00September, 2021|Oral Cancer News|