The identified SLE‐enriched T cell exosomal proteins encompassed protein kinases, protein phosphatases, and metabolic enzymes (Supplementary Table 2, available on the Arthritis & Rheumatology website at http://onlinelibrary.wiley.com/doi/10.1002/art.41920/abstract). The gene discussed is WEE1; the disease is systemic lupus erythematosus.