- HRV parameters significantly predicted PSA levels at 6 months independent of confounders- HRV significantly predicted PSA levels only in stage 4 (metastatic stage), not in stage 2/3- HRV parameters with no significant correlation to OS or survival time- Higher HRV in younger (under 65 years) NSCLC patients significantly predicted longer survival time- NSCLC patients have significantly lower SDNN than PrC patients. This evidence concerns the gene KLK3 and non-small cell lung carcinoma.