SDC1 and breast carcinoma: To assess if the differential prognostic value of the Sdc-1-dependent angiogenic factors was associated with altered expression patterns in well-characterized human breast cancer model cell lines, we compared the expression of the factors analyzed in this study in a panel of 33 cell lines using RNASeq data of the EMBL-EBI expression atlas (release 37 March 2021) [32] (Supplementary Figure S3).