"Three years ago Tomas Sandoval was looking forward to the birth of his second child when he was diagnosed with a rare form of a blood cancer called lymphoma. Despite chemotherapy and a stem cell transplant the cancer returned before his daughters first birthday. Everything is at stake. Being around for my daughter my son my wife. Yeah it was a really tough time he said. Sandoval is alive today because of an experimental form of immunotherapy called CART. Normally our immune cells are good at killing invaders like bacteria but bad at fighting cancer. With CART a patients own immune cells are removed from the body reprogrammed to find and destroy cancer cells then put back into the bloodstream. On Friday Moffitt Cancer Center and MD Anderson reported test results of  patients with advanced lymphoma who had failed previous therapy and were treated with CART.  It puts a GPS navigation on the front of the cell so that when theyre infused back in they know where to go and kill the lymphoma said Dr. Frederick Locke who helped lead the trial.  About eight months after a single treatment  percent of patients had no evidence of cancer. Thats actually quite remarkable knowing that at best only one out of  of these patients could have complete disappearance of their lymphoma with standard chemotherapy Locke said. Side effects included flulike symptoms and confusion and there were three treatmentrelated deaths. The FDA will review these results and could make a decision on approval by the end of the year."