ENTPD1 and systemic lupus erythematosus: Exposure to the GCST90027850 microbiota specie (Lachnospiraceae_bacterium_3_1_46FAA, β = ‐0.396 [‐0.700, ‐0.091], P = .011) reduces the expression of immune cell GCST90001942 type (CD25 on CD39+ secreting Treg), thereby lowering the risk of SLE.