FOXR2 and brain neoplasm: Enrichment analysis of these signatures in each individual murine cell by ssGSEA showed that, in all models, neuron-like malignant cells scored higher for NB-FOXR2 signatures than for any other tumor type (Fig. 6E and F), indicating that these cells are transcriptionally closer to human NB-FOXR2 than to other pediatric brain tumors.