Enroth S, Bosdotter Enroth S, Johansson Å, Gyllensten U
Biomarkers 20 (6-7) 355-364 [2015-11-09; online 2015-11-09]
To study the impact of genetic and lifestyle factors on protein biomarkers and develop personally normalized plasma protein profiles (PNPPP) controlling for non-disease-related variance. Proximity extension assays were used to measure 145 proteins in 632 controls and 344 cases with non-communicable diseases. Genetic and lifestyle factors explained 20-88% of the variation in healthy controls. Adjusting for these factors reduced the number of candidate biomarkers by 63%. PNPPP efficiently controls for non-disease-related variance, allowing both for efficient discovery of novel biomarkers and for covariate-independent linear cut-offs suitable for clinical use.