Breast Cancer + Basement Membrane Matrix Breast Cancer + Bone Marrow and Lung Niche Cells + laminin-rich ECM Breast Cancer + Bone Marrow Niche Cells + Collagen biomatrix Breast, Colon and Pancreatic Cancer + Stiff Col-Tgel Bladder, Prostate Cancer + Prostate Niche Cells + Amikagel Breast and Ovarian Cancer + Collagen gel Melanoma + Fibrin gel Brain Metastatic Breast Cancer + Hyaluronic Acid Hydrogel. This evidence concerns the gene LAMB2 and breast cancer.