PADI4 and systemic lupus erythematosus: As with autophagy, in HDs’ PBMCs we found an interindividual variability for citrullinated vimentin and PAD4 enzyme expression levels, observing lower mean expression levels in comparison with SLE patients’ PBMCs at baseline and after 2 and 4 weeks of BLM treatment, but comparable to the SLE patients’ PBMCs after 12 weeks.