- In order to prevent delay of potentially stabilizing palliative therapy, the following conditions will exclude eligibility: untreated active leptomeningeal involvement with malignancy, untreated brain metastasis, and other organ-threatening diseases in which palliative treatment options with reasonable probability of efficacy (15% or higher) are available. Patients with these conditions for whom available palliative options have been tried or deemed unacceptable but who otherwise meet eligibility criteria may, at the discretion of the PI, be considered for enrollment.