Cancer Therapy Dropped in U.S. Is Revived in China
2/25/2005 Andrew Pollack New York Times (nytimes.com) Chinese biotechnology companies have long copied American drugs for use in their home markets. But one Chinese imitator may now save a novel cancer treatment from oblivion after it was abandoned by its American developer. Shanghai Sunway Biotech, a biotechnology company in Shanghai, has licensed worldwide rights to the therapy from Onyx Pharmaceuticals, based in Emeryville, Calif., people at both companies said. It is a sign that China is plowing ahead in certain areas of medicine that are regarded more cautiously in the United States. The therapy uses a virus that has been genetically modified to attack cancer cells but avoid normal cells. The treatment, called Onyx-015, elicited great interest among cancer researchers a few years ago when it showed the ability to shrink tumors in midstage clinical trials. But there were challenges delivering the therapy to tumors because the immune system attacks the virus. Some scientists also considered the treatment a form of gene therapy, a technique that fell into disfavor after the death of a teenager in a gene therapy trial at the University of Pennsylvania. Onyx stopped work on the virus treatment in 2003 to devote its money to a more conventional cancer drug that is now in late stage trials with Bayer, the German pharmaceutical company. Onyx could not find a partner willing to pay for further development of the virus therapy. Unbeknownst to Onyx, however, Sunway researchers duplicated its approach after reading a paper published by Onyx scientists [...]