HPV-related head and neck cancer may have two distinct subtypes
Source: www.curetoday.com Author: Brielle Benyon There may be two “intrinsically different subtypes” of HPV-positive head and neck cancer — one of which may be more likely to respond to radiation treatment, according to recent research published in the journal Proceedings of the National Academy of Sciences. “We're the first ones to describe these two subtypes,” study author, Dr. Wendell Yarbrough, Thomas J. Dark, distinguished professor of Otolaryngology/Head and Neck Surgery at the University of North Carolina Lineberger Cancer Center, said in a press release. “Using this research, we can firmly identify two groups of patients and are able to associate their tumor subtype with treatment outcomes.” The researchers discovered a difference in outcomes between patients with high and low NF-kB activity. Of note, NF-kB is a biomarker that activates the expression of pro-inflammatory genes and plays a role in inflammasome (response to infection- or stress-related stimuli) regulation, according to the National Institutes of Health. “Tumors with high NF-kB activity were more responsive to radiation therapy potentially contributing to improved patient survival,” Yarbrough said. “We know that there's something about activating the NF-kB pathway that makes the tumors more sensitive to radiation therapy, which could explain how and why those patients are surviving better.” These findings, according to the researchers, may help determine which patients should undergo these aggressive treatments, and which patients might fare better with a different approach. HPV-positive head and neck squamous cell carcinoma is typically treated with a combination of high-dose radiation and chemotherapy, though this regimen [...]