Are DNA methylation marks the new seronegative RA biomarkers? Riskedal et al. propose a new model based on whole-blood DNAm profiles Sens 90%, Spe 88%, Accuracy 89% for classification of RA Accuracy RA Sero+ 100%, RA Sero- 75% https://t.co/3occAQPZ1u Abs#0531 #ACR22 @Rheumnow https://t.co/QXhMxyWC8g