CBR3 and leukoplakia: RT-PCR analysis was performed in order to analyze the transcript levels of the CBR3 gene in our sample set of 27 OSCCs (clinico-pathological features are listed in Table 2), and 19 leukoplakia (LP) tissues that included 4 hyperplasias and 3 mild, 7 moderate and 4 severe dysplasias (Fig. 4).