What would your next line treatment be for a patient previously treated with repeat resection, craniospinal irradiation, and initial cisplatin/vincristine/CCNU with medulloblastoma?

As you will agree, this is an extremely unfortunate situation. I am assuming this patient has progressed either while on therapy or soon after completion? Depending on his age, a potential option is to enroll him on any available clinical trials. PBTC58 study uses intrathecal omburtumab along with c...