High expression of HMGA1 mRNA was found in bladder cancer cell lines T24 (3.65 ± 0.04) and 5637 (6.22 ± 0.38) as compared to SV-HUC-1 (0.99 ± 0.01, P < 0.001). The gene discussed is HMGA1; the disease is urinary bladder carcinoma.