Merck immunotherapy appears effective in head and neck cancer – study | Reuters
Source: www.firstpress.comAuthor: Bill Berkrot A Merck & Co drug that helps the immune system fight cancer was about twice as effective as the current standard therapy for patients with recurrent or advanced head and neck cancers, according to study data released on Friday. A quarter of the 132 patients who received the drug, Keytruda (pembrolizumab), saw their tumors shrink by at least 30 percent. Fifty-six percent of patients experienced at least some tumor shrinkage in the ongoing single drug Phase I study dubbed Keynote-012, researchers reported. "This is remarkable because we don't usually see this level of activity with new agents. We have a track record of failure," said Dr. Tanguy Seiwert, lead investigator of the study from the University of Chicago. Advanced head and neck cancer is currently treated with Eli Lilly's Erbitux, known chemically as cetuximab, which typically has a response rate of 10 percent to 13 percent. "The only thing that works is cetuximab and this looks at least twice as good," said Seiwert, who was presenting the Keytruda data at the American Society of Clinical Oncology meeting in Chicago. ADVERTISING Merck shares rose more than 1 percent to $60.43 on the New York Stock Exchange. Keytruda and Opdivo from Bristol-Myers Squibb Co are at the forefront of a promising new class of drugs called PD-1 inhibitors that block a mechanism tumors use to evade the immune system. Keytruda is approved to treat advanced melanoma and awaits a decision for use in lung cancer. It is being [...]