FBXO21 and sarcoma: Although the expression of CNTNAP4 in this dataset had lowly expressed transcripts, the levels of CNTNAP4 interacting genes (MACF1, MLLT4, FBXO21, CASK) were found to be highly enriched in the Ki67high sarcoma cells (Fig. 6d), which was found as well to cluster with high MDM2 expression.