Participation in the GLASS consortium is based on availability of paired high-quality tumor samples and/or molecular characterization of such pairs. Sites are actively being recruited and interested parties are encouraged to participate. GLASS was developed according to the principles of The Cancer Genome Atlas (TCGA) with a focus on data availability, open access, and collaborative team science. Benefits of GLASS membership includes early access to the GLASS Data Resource and joining a vibrant community of neuro-oncology researchers.