The prognostic strength of the risk model for the penile cancer data (128 patients, 25 events, 9 predictors) was relatively high, with the ‘true’ (standardised) coefficients ranging from −0.01 to 0.89 (true coefficients for predictors were as follows: age: 0.58; depth of invasion: 0.52; Ki67: −0.06; Mcm2: −0.01, Ki67‐g95: 0.17; lymph node status: 0.89; lymphovascular invasion: 0.23; extent of invasion:0.24; ploidy status: 0.36). This evidence concerns the gene MKI67 and penile cancer.