Levy said the drugs used in the treatment have already been proven safe for people and that the side effects known thus far include fever and soreness at the injection site, but not vomiting.
"It's the combination (of the drugs) that we are testing," Levy told SFGate.
He added that he doesn’t expect the Federal Drug Administration to give the treatment final approval until a year or two from now, if the treatment is cleared.
Levy is considered a leader in the field of cancer immunotherapy. His research previously led to the development of rituximab, a groundbreaking anticancer treatment for humans.
"All of these immunotherapy advances are changing medical practice," Levy said in January. "I don't think there's a limit to the type of tumor we could potentially treat, as long as it has been infiltrated by the immune system."
The Atlanta Journal-Constitution contributed to this report.