For skin cancers, expression of ARMS was specific to malignant melanoma in that non-melanocytic skin cancers such as basal cell carcinoma (n=5), squamous cell carcinoma (n=5), and extramammary Paget's disease (n=3) did not express ARMS (Supplementary Figures S1G–I). Here, KIDINS220 is linked to extramammary Paget disease.