In the Gene Expression Profile Interaction Analysis (GEPIA2) database and 111 pairs of cancer tissues and paired adjacent tissues isolated in the breast cancer gene expression array through the clinical sample Barcode officially provided by TCGA, we also consistently found that the expression of COL11A1 in BRCA tissues was higher than that in normal breast tissues (Figures 1B,C). The gene discussed is COL11A1; the disease is cancer.