Cuba is exporting something far more interesting than cigars and rum: a vaccine for cancer. CIMAvax is a lung cancer treatment recently developed in Cuba, where medical research is not dominated by consumer interests—yet. Trials in Cuba found that CIMAvax extended patients' lives after chemotherapy by three-to-five months longer than those who didn't receive the vaccine. And last month, it was announced that CIMAvax is making its way to the Roswell Park Cancer Institute in New York for an FDA-approved clinical trial, The New York Times reports. CIMAvax is called a vaccine because it prompts the immune system to block an attack, but it isn't preventative in the way a chicken pox vaccine, for example, is. It is a treatment for lung cancer, one that gets the immune system to slow the growth of cancerous cells. The anecdotal evidence is hopeful, too. According to The Times, some American lung cancer patients who travel to Cuba to get the vaccine, then smuggle it back into the States, claim it is lifesaving. "There's no doubt that without this medicine, I would be dead," said one man, who started getting the vaccine from Cuba in 2012. Another, whose cancer returned once in 2010, said, "Since I have been taking CIMAvax, it hasn't come back. "Should the trial go well, and should relations between Cuba and the U.S. continue to soften, then the vaccine could treat American lung cancer patients—no smuggling required.