Clinical characteristics of the study population, and frequency of the TP53 Arg72Pro genotypes in the indicated subpopulations.

<p>Numbers of patients in each of the indicated subgroups are shown. Numbers in parentheses indicate the fraction of patients (%) in each row with genotypes Arg/Arg, Arg/Pro and Pro/Pro, respectively. na, status not available; ER, estrogen receptor; PR, progesterone receptor. p53 IHC positivity indicates a TP53 mutation <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0047325#pone.0047325-Norberg2" target="_blank">[53]</a>. All p-values of subgroup comparisons were >0.05 (Chi² tests).