To refine the prognostic value of TERT‐expression‐related alterations in thyroid cancer, we analysed the methylation and mutation status of TERT promoter in the whole series (n = 106) by next‐generation‐sequencing and determined TERT‐locus copy number for a subset of 31 tumours by SNP‐array. This evidence concerns the gene TERT and thyroid cancer.