TP53 and colorectal cancer: Fig 1 shows an example of RFLP analysis. We have found one DNA sample (#36 in Fig 1) originated from FFPE tissue sections of colorectal cancer that contains the same 378C>G mutation (also verified by sequencing) out of 42 tumor samples available to us. This indicates that this mutation may occur more frequently in cancer patients compared to the p53 database where it was reported in seven different cell lines [4].