A pan-cancer survival analysis revealed that CDKN2A-ALT patients had a shorter OS than CDKN2A-WT patients in 23 cancer types, including thymic epithelial tumor, thyroid cancer, renal non clear cell carcinoma, salivary gland cancer, gastrointestinal stromal tumor, adrenocortical carcinoma and so on. The gene discussed is GPT; the disease is thyroid gland carcinoma.