That’s when the couple met Pinter-Brown, a nationally regarded lymphoma expert.
She told Sean that his pathology report had been misread. He actually had mantle cell lymphoma, a rare and deadly type of non-Hodgkin lymphoma. This disease, which attacks certain white blood cells called lymphocytes, required an entirely different treatment plan, she said.
In addition to chemotherapy, Pinter-Brown suggested he consider a transplant of blood stem cells. Since UCI Health didn’t yet offer the procedure, Sean received a transplant of his own treated stem cells in fall 2018 at another cancer center in the region.
After his lymphoma reappeared in spring 2020, he had CAR T-cell therapy, a treatment with genetically altered immune cells. By early August, he learned that it, too, was unsuccessful.

