Leptmeningeal disease (LMD) is an aggressive subtype of metastatic disease in the central nervous system (CNS) and has a poor prognosis with a median overall survival of a few months.The IT-PD1 trial group wants to contribute to an improvement of this situation for LMD patients by using an intrathecal application route for the PD1 antibody, i.e. a drug that has shown clinical efficacy in the underlying tumor via the intravenous route.
To determine the safety of intrathecal (IT) PD1 antibody for Intrathecal application of PD1 antibody in metastatic solid tumors with leptomeningeal disease of solid tumors.