TP53 and neoplasm: These results are consistent with those reported by other authors for some tumour types, in which it has been pointed out that LOH of p53 occurs more commonly for the Pro allele and that there is a preferential mutation of the Arg72 allele (Brooks et al, 2000; Marin et al, 2000; Tada et al, 2001; Furihata et al, 2002; Anzola et al, 2003).