NCI Definition: A usually well differentiated melanocytic neoplasm arising from the meninges. It is characterized by the presence of epithelioid, fusiform, polyhedral, and spindle melanocytes without evidence of hemorrhage, necrosis, or high mitotic activity. Presenting symptoms include headache, vomiting, and neurological manifestations. Complete excision is usually curative. 
There is 1 clinical trial for meningeal melanocytoma, of which 1 is open and 0 are completed or closed. Of the trial that contains meningeal melanocytoma as an inclusion criterion, 1 is phase 1 (1 open).
Nivolumab is the most common intervention in meningeal melanocytoma clinical trials.
2. The AACR Project GENIE Consortium. AACR Project GENIE: powering precision medicine through an international consortium. Cancer Discovery. 2017;7(8):818-831. Dataset Version 6. This dataset does not represent the totality of the genetic landscape; see paper for more information.