a statistical trendP =0.0505
Neither MDM2 ( P =0.54) nor P14/ARF ( P =0.27) mRNA expression showed a significant correlation with respect to the patients' age. P14/ARF mRNA expression showed no significant correlation with respect to sample age ( P =0.089). MDM2 mRNA expression showed a statistical trend with respect to sample age ( P =0.0505), but the positive rho-value (rho=0.28) indicated a direct correlation between sample age and mRNA leading to the assumption that with increasing age of the sample the mRNA amount would increase.