In the NKI database, ADAM12 mRNA levels (transcript variant 1) were more frequently upregulated in claudin-low (CL) tumors compared to basal (B), luminal A/B (LumA/B), HER2-enriched (HER2+), or normal-like (NL) cancers (Additional file 2: Figure S1a). Here, ADAM12 is linked to cancer.