Through microarray transcriptome analysis of a parathyroid carcinoma (PCA) case and a biopsy from the same patient’s normal parathyroid gland, Adam et al. identified KCNJ16 as one of the DEGs in PCA, and found that KCNJ16 was upregulated in patients with PCA. Here, KCNJ16 is linked to parathyroid gland carcinoma.