CD63 and invasive breast carcinoma: Correlative analysis of CD63, CD74, and TIMP‐1 expression in a Breast Invasive Carcinoma (TCGA, Firehose Legacy) dataset of 1108 samples showed a moderate association between CD63 expression and TIMP‐1 (Fig.4C; lefthand panel, Spearman r = 0.56), whereas CD74 expression was not associated with TIMP‐1 (Fig.4C; middle panel, Spearman r = 0.30), supporting our own data.