Figure 1 shows the level of TGF-β1 in tumour tissue by different genotypes of TGF-β1 at T29C. The highest level of TGF-β1 was seen in the T/T genotype (median: 707.9 pg mg−1). The average TGF-β1 levels were 657.8 and 640.8 pg mg−1 in the T/C and C/C carriers, respectively. The differences in tissue levels of TGF-β1 by the genotype, however, were not statistically significant (P=0.210). Here, TGFB1 is linked to neoplasm.