6/13/2006 Larchmont, NY press release Genetic Engineering News (www.genengnews.com) Intraop Medical Corporation has received encouraging reports of significant local control and survival benefits for patients with advanced head and neck cancer who received intraoperative electron radiation therapy (IOERT) as part of their treatment. The studies were conducted at The Arthur James Cancer Center at The Ohio State University in Columbus, Ohio, one of seven U.S. centers currently equipped with a Mobetron(R). These results are significant for the Company because Intraop is the developer of the Mobetron, the world's first and only mobile electron-beam system designed exclusively for this kind of treatment. One study involved patients with hypopharyngeal cancer. This uncommon cancer has one of the worst prognoses for tumors of the upper aerodigestive tract, with five-year survival rates ranging from 19% to 31% when using only surgery, conventional radiation and chemotherapy. In the current study that added IOERT, the five-year survival rate was 56%, and more than 90% of the patients achieved local control of their disease. The second study included locally advanced tumors of the oral cavity and oropharynx. Standard treatment regimens for these tumors produce four-year survival rates of less than 38%. When IOERT was added, the survival rate was 72%, and overall local control of the disease was 93%. "Head and neck cancers are very difficult to treat because so many vital structures in this region of the body need to be preserved to provide good quality of life for the patient. These new studies are further [...]

6/12/2006 Rome, Italy Kathy Jones Foodconsumer.org Folic acid supplements could halt some laryngeal lesions from progressing to cancer and could even promote regression of disease, according to a new study by researchers at the Sacro Cuore Catholic University in Rome, Italy. The researchers studied the effect of folic acid supplements on laryngeal leucoplakia, which is a precancerous lesion that occurs as a white patch. Smokers are particularly prone to these lesions and might benefit from taking folic acid as a preventative measure, the researchers said. The study had 43 patients diagnosed with glottic laryngeal leucoplakia. Researchers assigned these patients to receive 5 mg of folate supplements every eight hours for six months. All patients were examined every 30 days. Blood tests were done periodically to ensure the volunteers were taking their supplements as assigned. The researchers report that thirty-one out of 43 patients with laryngeal leukoplakia had a 50 percent or greater reduction in patch size at the end of six months. The detailed report appears in the online edition of the journal Cancer. * The small study found that 12 people did not respond to folic acid supplementation. * Of the remaining, 19 had a partial response and 12 had a complete response. * There was no evidence of the original white patches after 6 months of folic acid therapy in the latter group. "Folate supplementation, alone or in combination with other chemopreventive drugs, could effectively reduce the risk of progression in an already genetically altered mucosa, especially in [...]

6/10/2006 London, England Hugo RIfkind TimesOnLine (entertainment.timesonline.co.uk) Cigarettes were cool in the 1950s; a killer in the 1980s. Now Hollywood is hooked again, says Hugo Rifkind Here’s a funny thing. Throughout Casablanca, not one woman smokes. The men do, like anything. A viewer from another species might assume that Humphrey Bogart has a thin white fifth finger, and that he contains an inexhaustible supply of thin, wispy, white candyfloss, which seeks any orifice from which to escape. But the women; never. They may hold cigarettes, but they never smoke them. Seriously. Not once. There is even a scene, right at the beginning, where a women beside Sam at the piano starts to bring a cigarette towards her mouth, and then pauses, as though thinking better of it. Richard Klein, the author of the excellent Cigarettes are Sublime (Picador, 1995), suggests that she may have been checked by a signal from the director. This was 1942, and a mainstream Hollywood movie. Such things just weren’t done. Jump forward 63 years, to 2005’s Romance and Cigarettes, and you can sort of see where that director was coming from. Whenever Kate Winslet’s grotesquely strapping lingerie salesgirl Tula drains a cigarette and leaves it crushed and lipstick-smeared, it is evident to even the most naive viewer that this cigarette probably represents something else. Thank You for Smoking, which opens on Friday, is a satire based around a tobacco PR, played by Aaron Eckhart, who is desperate to get smoking back into the movies. “Let’s [...]

6/10/2006 Washington, DC Todd Zwilich WebMD (www.webmd.com) A government expert panel on Tuesday added cancer of the larynx to the list of ailments directly linked to asbestos exposure but said there was less evidence tying the mineral to a variety of other cancers. The conclusion means that thousands more workers exposed to asbestos could qualify for compensation from a fund under debate in Congress. But lawmakers are still far from agreement on the proposed $140 billion fund, and it looks increasingly unlikely that Congress will finalize it this year. An Institute of Medicine (IOM) panel concluded Tuesday that large-scale studies show a “causal relationship” between asbestos exposure and cancer of the larynx, a part of the throat containing the vocal cords. Results from 34 studies show that people exposed to asbestos have an average 40% greater chance of laryngeal cancer than those with no exposure, the committee concluded. People with high exposure -- including miners and some construction and textile workers -- had up to double to triple the risk. The panel also found evidence linking asbestos to cancer of the stomach, upper throat, colon, and rectum. But it said that studies were not strong enough to conclusively point to asbestos as a cause. “There’s some evidence showing greater risk in those who are exposed, but there’s still substantial uncertainty,” Jonathan Samet, MD, chair of the IOM panel, tells WebMD. Asbestos was used for decades in a variety of industrial products, including insulation, construction materials, fire retardants, and tiling. Exposure [...]

6/10/2006 Chicago IL Lauren Heist Beep (www.beepcentral.com) For lots of people, oral sex seems fun and risk-free. You can’t get pregnant, and it’s pretty difficult to get AIDS. What’s not to like? See, you won’t get pregnant if you give or receive oral sex, but you can get infected with Human Papillomavirus (HPV) -- most commonly known as the virus that causes genital warts. HPV has been known to cause cervical cancer for years, but new research has proven that some forms of this common sexually transmitted disease can lead to cancer of the mouth and throat, according to the American Cancer Society. HPV is one of the most common sexually transmitted diseases in the world -- 75 to 80 percent of all Americans between the ages of 15 and 49 have been infected with the virus, according to the American Social Health Association. In fact, you’re probably infected right now and don’t even know it. That’s because when the virus is inactive, it’s very difficult to spot. You can get a normal pap smear and still be a carrier. When the virus becomes active, it often shows up as genital warts. HPV, whether active or inactive, is transmitted by skin-to-skin contact, so you can get HPV even if you or your partner is wearing a condom or even if you’re having oral sex instead of regular sex. “If you’re wearing a condom, there are parts of your anatomy that aren’t protected,” says Brian Hill, executive director of the Oral [...]

6/9/2006 Gainesville, FL William M. Mendenhall et al. Journal of Clinical Oncology, Vol 24, No 17 (June 10), 2006: pp. 2618-2623 The purpose of this article is to review the role of intensity-modulated radiotherapy (IMRT) in the standard management of patients with head and neck cancer through a critical review of the pertinent literature. IMRT may result in a dose distribution that is more conformal than that achieved with three-dimensional conformal radiotherapy (3D CRT), allowing dose reduction to normal structures and thus decreasing toxicity and possibly enhancing locoregional control through dose escalation. Disadvantages associated with IMRT include increased risk of a marginal miss, decreased dose homogeneity, increased total body dose, and increased labor and expense. Outcomes data after IMRT are limited, and follow-up is relatively short. Locoregional control rates appear to be comparable to those achieved with 3D CRT and, depending on the location and extent of the tumor, late toxicity may be lower. Despite limited data on clinical outcomes, IMRT has been widely adopted as a standard technique in routine practice and clinical trials. The use of IMRT involves a learning curve for the practitioner and will continue to evolve, requiring continuing education and monitoring of outcomes from routine practice. Additional standards pertaining to a variety of issues, including target definitions and dose specification, need to be developed. Phase III trials will better define the role of IMRT in coming years. Authors: William M. Mendenhall, Robert J. Amdur, Jatinder R. Palta Authors' affiliation: From the Department of Radiation Oncology, [...]

6/9/2006 Alexandria, VA Carole Fakhry, Maura L. Gillison Journal of Clinical Oncology, Vol 24, No 17 (June 10), 2006: pp. 2606-2611 Human papillomavirus (HPV) is now recognized to play a role in the pathogenesis of a subset of head and neck squamous cell carcinomas (HNSCCs), particularly those that arise from the lingual and palatine tonsils within the oropharynx. High-risk HPV16 is identified in the overwhelming majority of HPV-positive tumors, which have molecular-genetic alterations indicative of viral oncogene function. Measures of HPV exposure, including sexual behaviors, seropositivity to HPV16, and oral, high-risk HPV infection, are associated with increased risk for oropharyngeal cancer. HPV infection may be altering the demographics of HNSCC patients, as these patients tend to be younger, nonsmokers, and nondrinkers. There is sufficient evidence to conclude that a diagnosis of HPV-positive HNSCC has significant prognostic implications; these patients have at least half the risk of death from HNSCC when compared with the HPV-negative patient. The HPV etiology of these tumors may have future clinical implications for the diagnosis, therapy, screening, and prevention of HNSCC. Authors' affiliation: From the Departments of Viral Oncology, Aerodigestive Malignancy, and Cancer Prevention and Control, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins; and the Departments of Epidemiology and Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD

6/9/2006 Madison, WI Stuart J. Wong, Mitchell Machtay, Yi Li Journal of Clinical Oncology, Vol 24, No 17 (June 10), 2006: pp. 2653-2658 Patients with locally recurrent head and neck cancer previously treated with radiation have a poor prognosis. Administration of a second course of radiation to tissues within a previous radiation portal, has been traditionally considered unsafe. Survival rates of highly selected patients treated with concurrent chemotherapy and re-irradiation may be as high as 25% at 2 years—exceeding the outcome of matched historical controls treated with chemotherapy alone (10%). However, many questions exist regarding the use of re-irradiation. Uncertainty exists over the criteria for selecting patients who are most appropriate for treatment with re-irradiation. Even greater concern exists regarding toxicity and functional sequelae associated with the use of re-irradiation. Whether the benefits of re-irradiation on locoregional disease control and survival outweigh its potentially severe and life-threatening adverse effects is not clear. In this review, we will discuss re-irradiation and other treatment options for squamous cell carcinoma patients with previously irradiated, locoregional recurrent or second primary tumors in the head and neck, and describe a recently initiated randomized trial comparing chemotherapy plus re-irradiation with chemotherapy. Authors' affiliation: From the Division of Neoplastic Diseases, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI; Department of Radiation Oncology, Jefferson Medical College/ Bodine Cancer Center, Philadelphia, PA; and Harvard School of Public Health, Dana-Farber Cancer Institute, Boston, MA

6/9/2006 Iowa City, IA staff CancerConsultants.com According to results presented at the 42nd annual meeting of the American Society of Clinical Oncology (ASCO), initial therapy for head and neck cancer that includes standard chemotherapy plus Erbitux® (cetuximab) provides anticancer responses in 100% of patients. Approximately 40,000 people in the U.S. are diagnosed with head and neck cancer every year. Cancers of the head and neck include several types of cancers affecting the nasal cavity and sinuses, oral cavity, nasopharynx (upper part of throat, behind ear), oropharynx (middle part of throat, including soft palate, base of tongue, and tonsils), and other sites throughout the head and neck. In 2005 the American Cancer Society estimated that 11,000 people would die from head and neck cancer. The epidermal growth factor receptor (EGFR) pathway is a biologic pathway that plays a role in cellular replication and is often over-expressed in cancer. Erbitux, a monoclonal antibody (or protein), is designed to bind to the EGFR and inhibit the receptor’s effects on cellular replication. This ultimately reduces or prevents growth and spread of cancer cells in some cancers. Recently, Erbitux was approved by the FDA for use combination with radiation therapy for the treatment of locally or regionally advanced squamous cell carcinoma of the head and neck (cancer that has spread from its site of origin but not to distant sites in the body), or as a single agent in recurrent or metastatic squamous cell carcinoma of the head and neck (cancer that has spread to [...]

6/9/2006 Chevy Chase, MD Gillison, Maura L. MD, PhD; Shah, Keerti V. MD, DrPH Current Opinion in Oncology (www.co-oncology.com) There is increasing molecular and epidemiologic evidence that human papillomavirus (HPV) is associated with a distinct subset of head and neck squamous cell carcinomas. The strength and consistency of HPV DNA presence in oropharyngeal cancers bolster the argument that this association is likely causal. HPV-positive tonsillar cancer in particular is emerging as a specific disease entity with distinct molecular, pathologic, and clinical characteristics. Recent data suggest that the incidence of tonsillar carcinoma in the United States is increasing, despite a decline in tobacco use, supporting the existence of other important risk factors such as HPV infection. Individuals with a history of an HPV-associated anogenital cancer and HIV-infected men are at increased risk for tonsillar carcinoma. This review focuses on the recent literature (since 1998) investigating the relationship between HPV and head and neck cancer development, using the current paradigm for causal inference in epidemiologic research attributed to Sir A. Bradford Hill. Data examining the association of HPV with pathogenesis of head and neck squamous cell carcinoma before 1999 were previously reviewed in this journal. Source: Current Opinion in Oncology. 13(3):183-188