Table 1. Frequency of microsatellite alterations in the DNA samples from 70 patients with urinary bladder TCC.

MSI: microsatellite instability, LOH: loss of heterozygosity, *: Total number of patients with any type of alteration (MSI and/or LOH) at either one or at both loci is lower than the sum of discrete numbers of MSI and LOH, since simultaneously alterations at both loci were observed in seven patients.