Treatment with the gene therapy shrank the tumors, and 50 percent of the treated mice survived at least 120 days with no detectable cancer. All the untreated mice died in less than 45 days. The researchers found no evidence of toxic side effects from the treatment[.]
Given the good results, work on scaling up the treatment to human sized tumors comes next. It marks a breakthrough because: "More than 37,000 people in the United States will be diagnosed with pancreatic cancer this year, and nearly all of those cases will be untreatable."
Via Science News, original research from here.