CD64 expression correlates with the interferon signature in SLE. Bivariate analysis of CD64 expression on monocytes (MFI, determined with flow cytometry; n = 108) and (a) the expression of the ISGs MX1, IFI44, and Ly6E (determined with real-time PCR), (b) the composite IFN score derived from the three ISGs, or (c) expression of the IFN-γ-inducible gene CXCL9. Spearman's correlation was used for all analyses.
Li et al. Arthritis Research & Therapy 2010 12:R90 doi:10.1186/ar3017