The RRF decline rate correlated with the ln UPCR (r = −0.460, p < 0.001), followed by BW gain during the first year of PD (r = −0.407, p < 0.001), diabetes (r = −0.362, p < 0.001), systolic BP (r = −0.276, p = 0.001), ln hs-CRP (r = −0.228, p = 0.009), HDL-cholesterol (r = 0.174, p = 0.037), RRF at the start of PD (r = 0.145, p = 0.043) and peritonitis rate (r = −0.172, p = 0.036). The gene discussed is CRP; the disease is diabetes mellitus.