A Panel of Novel Biomarkers Representing Different Disease Pathways Improves Prediction of Renal Function Decline in Type 2 Diabetes

作者：Pena Michelle J; Heinzel Andreas; Heinze Georg; Alkhalaf Alaa; Bakker Stephan J L; Nguyen Tri Q; Goldschmeding Roel; Bilo Henk J G; Perco Paul; Mayer Bernd; de Zeeuw Dick; Heerspink Hiddo J Lambers^*

来源：PLos One, 2015, 10(5): UNSP e0120995.

DOI：10.1371/journal.pone.0120995

Objective
We aimed to identify a novel panel of biomarkers predicting renal function decline in type 2 diabetes, using biomarkers representing different disease pathways speculated to contribute to the progression of diabetic nephropathy.
Research Design and Methods
A systematic data integration approach was used to select biomarkers representing different disease pathways. Twenty-eight biomarkers were measured in 82 patients seen at an outpatient diabetes center in The Netherlands. Median follow-up was 4.0 years. We compared the cross-validated explained variation (R-2) of two models to predict eGFR decline, one including only established risk markers, the other adding a novel panel of biomarkers. Least absolute shrinkage and selection operator (LASSO) was used for model estimation. The C-index was calculated to assess improvement in prediction of accelerated eGFR decline defined as <-3.0 mL/min/1.73m(2)/year.
Results
Patients' average age was 63.5 years and baseline eGFR was 77.9 mL/min/1.73m(2). The average rate of eGFR decline was -2.0 +/- 4.7 mL/min/1.73m(2)/year. When modeled on top of established risk markers, the biomarker panel including matrix metallopeptidases, tyrosine kinase, podocin, CTGF, TNF-receptor-1, sclerostin, CCL2, YKL-40, and NT-proCNP improved the explained variability of eGFR decline (R-2 increase from 37.7% to 54.6%; p=0.018) and improved prediction of accelerated eGFR decline (C-index increase from 0.835 to 0.896; p=0.008).
Conclusions
A novel panel of biomarkers representing different pathways of renal disease progression including inflammation, fibrosis, angiogenesis, and endothelial function improved prediction of eGFR decline on top of established risk markers in type 2 diabetes. These results need to be confirmed in a large prospective cohort.

• 出版日期2015-5-14