ACKR3 and neoplasm: We have defined the correlation analysis of CXCR7 gene expression against a gene stromal signature that was built from overlapping genes of mesenchymal markers and ECM remodeling derived from the TCGA mesenchymal subtype and the Tothill C1 (tumor desmoplasia) datasets (Verhaak et al., 2013; Yang et al., 2017).