CLEC4C and systemic lupus erythematosus: Insufficient plasmacytoid dendritic cell specific transcripts made GSVA unreliable, but CLEC4C (BDCA-2) and NRP1 (BDCA-4) transcripts were decreased in 6/10 and 2/10 SLE WB and PBMC datasets respectively, and not uniformly associated with the IGS (Supplementary Data 29).