HPV Linked to Throat Cancer Survival
Rise in Cancer Linked to Change in Sexual Practices
Oral Sex Important Risk Factor
So why are HPV infection rates much higher for white head and neck cancer patients than for black patients?
The answer may come down to differences in the way the two groups begin their sexual lives, Otis Brawley of the American Cancer Society tells WebMD.
Research suggests that young white people are far more likely than young black people to have oral sex before they have genital sex.
Becoming infected with HPV through oral sex may protect against future genital infection and visa versa, Brawley says.
So people who are infected through oral sex are at risk for developing HPV-positive throat cancer and those infected through genital sex may be protected, he suggests.
The link between HPV and throat cancer has only been recognized for a few years, but it is very real, the experts say.
HPV infection is now estimated to be the cause of as much as 50% of oropharyngeal cancers being diagnosed today.
“This is very different from 20 or 30 years ago when the risk factors for this disease were primarily tobacco and alcohol,” Lippman said.
Implications for Treatment, Vaccination
Cullen, Brawley, and Lippman said that head and neck patients, especially those with throat cancer, should be tested for HPV.
“The good news is, patients who are HPV-positive can be reassured that they will do well with chemotherapy and radiation,” Cullen says.
Chemotherapy and radiation have become the treatments of choice for head and neck cancer, but Cullen says it may not be the right approach for patients with HPV-negative oropharyngeal disease.
“This should make us rethink which patients are appropriate for chemotherapy and radiation and who might be better served by surgery and other approaches,” he says.
The findings may also have implications for who gets vaccinated to prevent HPV infection.
The vaccine is recommended for pre-teen girls only, but Brawley says an alarming increase in oropharyngeal cancers may lead to its wider use.
Even though HPV-positive patients have a good prognosis, vaccination might mean that they would never get the cancer in the first place, he says.