ICAM1 and systemic lupus erythematosus: The role of FFA to endothelial function in RA patients is not known, but in a study by Ormseth et al. (2013) on Systemic Lupus Erythematosus (SLE) patients, there was an association between FFA and endothelial activation markers i.e. E-selectin (r = 0.33, P = <0.001) and ICAM-1 (r = 0.35, P <0.001), but there is no correlation with sVCAM-1 [12].