GREM1 and neoplasm: Most functional classes are consistent with stromal as opposed to tumour cell function (e.g., proteinaceous extracellular matrix P=2.37 × 10−08, extracellular matrix P=2.49 × 10−08, collagen triple helix repeat P=7.12 × 10−07), although genes known to be expressed in tumour epithelium were identified (e.g., GREM1).