Positive staining was also found in a fraction of cells of corpuscles of Hassall‘s of thymus (Fig 1C), scattered adrenocortical cells (Fig 1D), and endothelial cells of blood vessels in a normal placenta (Fig 1E) and in an otherwise p16 negative clear cell carcinoma of the kidney (Fig 1F). Here, CDKN2A is linked to clear cell renal carcinoma.