Studies underscore genetic complexity of head and neck squamous cell cancers

Source: Dentistry IQ By Maria Perno Goldie, RDH, MS While we should be screening patients for oral and pharyngeal cancer daily, April has been designated as the month when we highlight this disease, and increase awareness about its prevention and treatment. Powerful new technologies that pinpoint the connections between human genes and diseases have clarified the background of cancer, singling out changes in tumor DNA that force the development of certain types of malignancies. Several major biomedical centers have collaborated to study head and neck squamous cell cancer. Their large-scale analysis has revealed a surprising new set of mutations involved in this disease. The studies underscored the genetic complexity of head and neck squamous cell cancers. Two independent, multi-institution research teams identified a large number of genetic defects associated with head and neck squamous cell carcinoma (HNSCC), the most common form of head and neck cancer. The researchers sequenced the entire protein-coding regions, or exomes, of the DNA in dozens of patient tissue samples.(1,2) Tobacco use, excessive alcohol consumption, and human papillomavirus (HPV) infection are known risk factors for HNSCC, including cancers occuring in the mouth and throat. The 5-year survival rate for many types of HNSCC has improved little over the past 40 years. According to the authors, the degree of differentiation, or tumor cell grade, has never consistently been shown to be a clinical prognostic factor in HNSCC. They said it was surprising to find mutations in a series of genes that appear to contribute to differentiation. Both [...]

2012-03-15T12:57:26-07:00March, 2012|OCF In The News, Oral Cancer News|

Discussing the Horrors of Oral Cancer with Two Survivors

Source: Dentistry IQ Mar 14, 2012 By Kevin Henry Managing Editor, Dental Economics Editor’s Note: I recently had the chance to talk with Christine Brader, a former smoker and three-time oral cancer survivor who lives in Allentown, Pa. She is a volunteer senior patient advocate and a board administrator for the Oral Cancer Foundation. For nearly five years, Brader has been active with the Oral Cancer Foundation’s online public forum. She devotes several hours a day to compassionately helping oral cancer patients with information and support. I discussed her battle against oral cancer as well as her current push to get more dental offices involved in the war against the disease. Brader and Eric Statler (interviewed later in this article) will be featured on the April cover of Dental Economics. Kevin Henry: You survived oral cancer three times. How were you able to overcome? Christine Brader: There aren’t very many three-time cancer survivors out there, especially when we are talking about oral cancer. I believe God saved me for my children. I wasn’t going to do any kind of surgery because I really didn’t think I was going to survive the third round of oral cancer within three years. I knew the surgery would be bad; I was Stage IV and needed my jaw removed. I knew I would probably end up disfigured. It’s hard to do something when you know your looks are going to be gone overnight and you’re not guaranteed that you will survive, but I knew [...]

2012-03-14T16:30:53-07:00March, 2012|OCF In The News, Oral Cancer News|

One in Two Have Never Heard of Oral Cancer

Source: Cancer Prevention Research Introduction: Vancouver's Downtown Eastside (DTES) community, one of poorest locales in Canada, has shown to be high-risk for oral mucosal abnormalities, including oral cancer. From our previous study, this community not only exposes to high-risk factors but has also high incidence of oral cancer: one oral cancer patient identified in 150 screened dental patients. This is much higher comparing to the rest of Canada and the US (1:10,000). Studies have shown that regular dental care is related to early-staged oral cancer detection. Traditionally dentistry is within the private health sector and access to dental service can be challenging to the DTES residents. Objective: 1) To determine the frequency of oral cancer risk behaviors; 2) To explore the available social assistant program to dental care; 3) To assess the dental care service utilization and its potential barriers in the DTES. Methods: To increase access, mobile screening clinics are set up at 3 main gathering locations: Vancouver Native Health Society (VNHS), Women's centre (WC) and LifeSkill's Centre (LC). Eligibility includes those of age 18 or over, reside in DTES at least for the past 3 months, and are able to sign a consent to participate. Using person-to-person interview, questionnaires for demographics, risk behaviors, perceived dental health status, available health care assistance programs, and dental care service utilization are used collect data. The oral health status is obtained through dental and oral mucosal examination by a dentist and an oral pathologist respectively. Each participant is given an incentive package [...]

2012-03-12T11:57:27-07:00March, 2012|Oral Cancer News|

HPV Connected to Oral Cancers Too

Source: Chicago Tribune It's common knowledge that HPV — or human papillomavirus — is linked with cervical cancer, thanks to the controversy over the vaccine. But far fewer people know that this same sexually transmitted viral strain is connected to oral cancers, according to a new study, recently published in the Journal of the American Medical Association. For years, clinicians thought these kinds of cancer — affecting the tongue and tonsil areas — were almost exclusively caused by tobacco use, since they mostly struck heavy smokers and drinkers. But according to Dr. Maura Gillison, an oncologist and researcher at Ohio State University, it's not cigarettes that are the culprit, but oral sex. The good news: Most people with oral HPV will never develop cancer. Dr. Ezra Cohen, a specialist in head, neck, thyroid and salivary gland cancers at the University of Chicago, helped explain what it all means: Q. In general, mouth cancers are increasing? A. Oropharynx cancer is on the rise dramatically. It's gone up 3 percent a year for the last three decades and will surpass all other sites for head and neck cancers. Q. And HPV-positive oral cancers? A. They will surpass cervical cancers within the next three years. It's only relatively recently that we've come to realize the scope of HPV-related cancers. Q. What have we learned from this study? A. Quite a lot, actually. It told us about prevalence — that about 7 percent of adults in the U.S. are infected with oral HPV... and [...]

2012-02-15T10:45:22-07:00February, 2012|Oral Cancer News|

The search for biomarkers of disease in spit

Source: University of Minnesota It's a researcher's dream: a simple, noninvasive test to detect life-threatening cancer, heart disease, or other maladies while they're still treatable. A team of University of Minnesota researchers is in hot pursuit of that goal, using one of the simplest means imaginable: testing spit. They've discovered that conditions such as breast and oral cancer leak certain proteins into saliva, and if detected, such proteins can be "biomarkers" for the disease. "This would be an easy way to monitor oral cancer," says Timothy Griffin, an associate professor of biochemistry, molecular biology and biophysics. "Every year in the United States there are about 40,000 cases, more than cervical or ovarian cancer, melanoma, or lymphoma, and it has a higher mortality." Saliva contains at least 2,000 proteins, but the most abundant ones tend to be the least informative, he notes. But he and his colleagues have become the world experts on snagging rare proteins from spit and detecting both their presence and their abundance. Promising discoveries In a study of 10 women with metastatic breast cancer, the researchers sifted through their salivary proteins and found a handful that were already known to seep into the blood of women with this cancer. The proteins appeared only at very low levels in saliva of healthy controls. "The next idea is, can you take this back through the earlier stages to detect nonmetastatic cancer?" says Griffin. Biomarker proteins also appear in saliva of patients with oral cancer. Team members Frank Ondrey, an [...]

2012-02-01T16:42:25-07:00February, 2012|Oral Cancer News|

Jaw Necrosis Common after Radiation for Oral Cancer

Source: MedpageToday.com Reviewed by Robert Jasmer, MD; Associate Clinical Professor of Medicine, University of California, San Francisco.     Action Points Note that this study was published as an abstract and presented at a conference. These data and conclusions should be considered to be preliminary until published in a peer-reviewed journal. Explain that osteoradionecrosis of the jaw (ORNJ) occurred more than twice as often as reported in the literature among patients with oral cancer treated with radiation. Point out that factors associated with the risk of ORNJ included female sex, no chemotherapy, and lower Charlson comorbidity index.     PHOENIX -- Osteoradionecrosis of the jaw (ORNJ) occurred more than twice as often as reported in the literature, according to a population-based study of patients treated with radiation for oral cancer. A review of national medical records showed that 16.1% of patients had jaw complications or interventions consistent with ORNJ compared with published rates of 5% to 7%. However, when investigators applied the definition of ORNJ to patients who had interventions associated with jaw complications, the rate approximated the published rates, as reported here at the Multidisciplinary Head and Neck Cancer Symposium. "The rates of all jaw complications in the SEER-Medicare database are higher than reported rates from prospective and retrospective institutional reports," said Beth M. Beadle, MD, PhD, of the University of Texas MD Anderson Cancer Center in Houston. "If we limited the definition to interventions, the rates are similar to those of published reports." Radiation therapy has documented efficacy for locoregional [...]

2012-02-01T16:34:06-07:00February, 2012|Oral Cancer News|

Which Cancers Are Increasing Among Older Adults?

Source: AARP Cancers of the mouth and throat related to oral sex, as well as thyroid, liver and skin cancers are on the rise among older adults, according to  new stats released last week from the American Cancer Society. There was some good news, however. The death rate is down for the well-known major cancers. The society’s Cancer Statistics 2012 report found that overall, cancer deaths dropped by nearly two percent for both men and women  from 2004 to 2008. That may sound paltry, but Len Lichtenfeld, M.D., the society’s deputy chief medical officer, says it is more significant than it seems: Many people avoided even hearing the words “you have cancer” because advances in cancer treatment caught problems early, while still in the pre-cancerous stage, he said. The report found that death rates were down for all four major cancers — lung, colorectal, breast and prostate. The biggest drop was for lung cancer, which is down almost 40 percent in the number of men dying from the disease, thanks to fewer Americans smoking. Deaths among women from breast cancer declined 34 percent, mainly because of increases in mammogram screening and a decrease in hormone use for menopause, the ACS report said. On the other hand, some cancers are increasing, particularly among older Americans. According to Medscape News , the ACS found that people 55 to 64 years of age had the highest increase in incidence rates for liver and HPV-related oral cancers; people 65 and older also had an increase in incidence rates [...]

2012-01-10T14:48:32-07:00January, 2012|Oral Cancer News|

Tongue and tonsil cancer patients surviving longer

Source: Dr.Biscuspid.com The five-year survival rate for U.S. patients with cancer of the base of the tongue or tonsils doubled between 1980 and 2002, according to a new study in Cancer Causes & Control (January 2012, Vol. 23:1, pp. 153-164). In addition, patients with human papillomavirus (HPV)-related cancers had greater survival rates than those with other oral cancers, and survival was greater for male patients than females regardless of age, according to the study authors, from the New York Eye and Ear Infirmary, the University of Utah School of Medicine, and the University of California, Los Angeles School of Public Health. However, patients with subsequent multiple cancers showed no overall survival improvement. The incidence rates of tongue and tonsil cancers have increased significantly in recent decades in the U.S., particularly among younger patients, the researchers noted. At the same time, a number of studies have shown a strong association between HPV infection and tongue and tonsil cancers. For this study, they used data from the Surveillance, Epidemiology, and End Results (SEER) 1973-2006 registry system to examine changes in survival rates among patients with base of tongue, tonsil, and other tongue cancers in recent decades. The study included 10,704 patients with squamous tongue or tonsil cancer who were at least 20 years old. The researchers separated the patients into those with one primary cancer and those with subsequent multiple cancers, then compared trends using three nonoverlapped periods: 1980-1982, 1990-1992, and 2000-2002. The first group included those with only one primary base of tongue, [...]

Global oral cancer rates to rise 63% by 2030

Source:DrBiscupid.com The International Agency for Research on Cancer, part of the World Health Organization (WHO), predicts that more than 790,000 people worldwide will be diagnosed with oral cancer by 2030, an increase of more than 63% compared with 2008. Mortality rates for mouth cancer are predicted to be even higher with more than 460,000 deaths forecast by 2030, more than 67% higher than 2008 rates, according to the International Dental Health Foundation (IDHF). The WHO believes modifying and avoiding risk factors could result in up to 30% of cancers being avoided, noted Nigel Carter, BDS, chief executive of the IDHF. "Although cancer is not wholly preventable, mouth cancer is very closely related to lifestyle choices. Making more people aware of the risks and symptoms for mouth cancer will undoubtedly save lives," Dr. Carter stated in a press release. "Forecasts for the incidence and mortality of mouth cancer are very grim. We hope more countries will develop their own oral cancer action campaigns to raise awareness." November is Mouth Cancer Action Month, sponsored annually by the IDHF. This news story was resourced by the Oral Cancer Foundation, and vetted for appropriateness and accuracy.

2011-12-27T11:27:28-07:00December, 2011|Oral Cancer News|

Anti-cancer vaccines are emerging

Source: Boston Globe Author: Karen Weintraub Long envisioned drugs to harness the immune system could reshape treatments   For more than a century, doctors and patients have dreamed of using the body’s own defenses to fight cancer. Why, they wondered, can’t the immune system - so good at tracking down and destroying intruders - attack the tumor cells that invade healthy tissue? Finally, science is catching up with this vision. Just reaching the market in a big way, so-called therapeutic vaccines turn a patient’s immune system against the cancer and help prevent a recurrence. If the early promise of these vaccines is realized, they will soon join the basic arsenal for fighting all cancers, several researchers said. “We really are in a transformative moment,’’ said Dr. Glenn Dranoff, professor of medicine at Harvard Medical School and a medical oncologist and immunologist at the Dana-Farber Cancer Institute. Prostate cancer patients were the first to benefit. A therapeutic vaccine called Provenge received federal approval last year after studies showed it safely extended the lives of advanced prostate cancer patients for an average of 4.1 months. Then came a vaccine called Yervoy, designed to attack melanoma, a particularly dangerous form of skin cancer. Cancer generally turns down the body’s immune response to a tumor; Yervoy is designed to turn it back on, enhancing the immune system’s ability to kill cancer cells. Many more cancer vaccines are under development, with hundreds of trials underway in patients with breast, prostate, lung, kidney, colon, cervical, brain, and [...]

2011-12-19T14:52:52-07:00December, 2011|Oral Cancer News|
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