SFRP5 and neoplasm: For SFRP5, ProteinAtlas has data for one antibody (HPA019840) in six BCC and six squamous cell carcinomas, showing strong cytoplasmic and membranous antibody staining and with strong intensity in >75% of the tumor cells as well as the overlying skin, which is in contrast with the low mRNA expression levels we found (Data S1).