268/279 SLE pts w/ kidney biopsy for proteinuria were Dx w/ lupus nephritis. Proliferative LN (III/IV+V) had higher levels of C1q, chromatin, dsDNA, ribosomal P Abs. C1q & dsDNA independently assoc w/ proliferative LN. AutoAbs decreased in proliferative LN https://t.co/tRucgJRpDN https://t.co/DtgEmGhUzd