TERT and neoplasm: No significant heterogeneity according to age at the first surgery and gender categories was evident for an association between TERT promoter mutations and tumour size (P‐value for heterogeneity of odds‐ratio = 1), that is the lack of association between TERT promoter mutations and tumour size (P = 0·8, Cochran–Mantel–Haenszel test) may be considered as true whatever age at first surgery and gender.