Hammerman figured she had nothing to lose and elected to try the vaccines. "Good Morning America" was allowed inside the operating room where it took Parsa three hours to remove two tumors from Hammerman's brain.
Although Parsa said the tumor was the size of a tangerine, it was a tumor big enough to create more than 20 vaccine doses. Hammerman will be vaccinated with her own tumor protein every two weeks. When the vaccines run out in 10 months, Parsa hopes Hammerman can survive on her own.
"I think we're going to give her a real good chance of fighting this disease. She's definitely a fighter," Parsa said.
Hammerman is home now with Grunder, and is fighting for her future one day at a time. She never dwells on her illness.
"I feel blessed," she said. "I've had such a great life. I loved everything I've done in life. I loved being a cop. I loved being an athlete. I wouldn't change anything."
The Food and Drug Administration has approved the clinical trials funded by the American Brain Tumor Association, but is still waiting to approve the actual treatment.