Smoking During Head & Neck Cancer Therapy Tied to Poor Outcome

Patients with head and neck cancer who continue to smoke while undergoing radiation treatments have a much lower long-term survival rate than those who kick the addiction, researchers have found. In the study of patients with squamous cell carcinoma of the head and neck, 23 percent of 101 patients who continued to smoke were still alive five years after treatment, compared with 55 percent of matched patients in a control group who quit smoking before they began radiation therapy.

In addition, 53 of the patients who continued to smoke suffered cancer recurrence, compared with 40 patients in the control group. The patients who kept smoking also had more treatment-related complications such as the development of scar tissue, hoarseness and difficulty eating. The poorer outcomes for persistent smokers were found both in patients who had radiation alone and in those who had surgery prior to radiation, the study authors noted in the report published in the February issue of the International Journal of Radiation Oncology/Biology/Physics.

"I've always told patients, 'You should really stop smoking,' but I had no tangible evidence to use to convince them that they would be worse off if they continued to smoke," lead author Dr. Allen Chen, residency training program director at the University of California, Davis, School of Medicine, said in a news release from the American Society for Radiation Oncology. "I wanted concrete data to see if smoking was detrimental in terms of curability, overall survival and tolerability of treatment. We showed continued smoking contributed to negative outcomes with regard to all of those," he added.

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Gene Activity May Affect Acute Myeloid Leukemia Outcome

For acute myeloid leukemia patients, overactive genes in their leukemic stem cells (LSC) can translate into a more difficult struggle to overcome their disease and achieve prolonged remission, new research reveals. "In many cancers, specific subpopulations of cells appear to be uniquely capable of initiating and maintaining tumors," the study authors explained in their report. The researchers identified 52 LSC genes that, when highly active, appear to prompt worse outcomes among acute myeloid leukemia (AML) patients.

Between 2005 and 2007, study author Andrew J. Gentles, of Stanford University in Palo Alto, Calif., and colleagues examined gene activity in a group of AML patients as well as healthy individuals. Separate data concerning AML tumors in four groups of patients (totaling more than 1,000) was also analyzed. In one of the patient groups, the investigators found that higher activity levels among 52 LSC genes meant a 78 percent risk of death within a three-year period. This compared with a 57 percent risk of death in the same time frame for AML patients with lower gene activity among these specific "signature" genes.

In another AML patient group, the research team observed that higher gene activity prompted an 81 percent risk for experiencing a disease set-back over three years, compared with just a 48 percent risk among patients with low gene activity. What's more, Gentles and his colleagues found that higher activity among these 52 LSC genes generally meant a poorer response to chemotherapy treatment and lower remission rates.

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Keeping Holiday Drinking in Check May Counter Cancer

Though holiday partying often includes alcohol consumption, cancer experts are urging partiers to partake moderately. "Research shows that drinking even a small amount of alcohol increases your chances of developing cancer, including oral cancer, breast cancer and liver cancer," Clare McKindley, clinical dietician in the Cancer Prevention Center at the University of Texas M.D. Anderson Cancer Center, said in a news release from the center.

"Researchers are still trying to learn more about how alcohol links to cancer," she added. "But convincing evidence does support the fact that heavy drinking damages cells and increases the risk for cancer development." To reduce risk, experts say, drinkers can do a number of things. First, stick to the recommended serving size. A drink is defined as 12 ounces of beer, 5 ounces of wine or 1.5 ounces of liquor. Women should have no more than one drink a day and men should have no more than two drinks a day, according to the U.S. National Cancer Institute.

Try to avoid high-calorie drinks. Many popular alcoholic drinks are loaded with calories, especially those mixed with soda, fruit juice or cream. A one-cup serving of eggnog, a holiday staple, has about 340 calories. Being overweight or obese is also associated with an increased risk for cancer. Researchers believe that it is the ethanol or alcohol in beer, wine and liquor that increases cancer risk. Check the ethanol percentage numbers on bottle labels and stay away from 100-proof liquor.

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