MYD88 and systemic lupus erythematosus: For instance, scRNA‐seq of pDCs in systemic lupus erythematosus (SLE) showed that Type III IFN production is triggered by RNA‐containing immune complexes (RNA‐ICs) in pDCs in a TLR‐MyD88‐dependent manner, which supported the contribution of both type I and type III IFNs in SLE.66