Low risk of renal flares and negative outcomes in women with lupus nephritis conceiving after switching from mycophenolate mofetil to azathioprine

Objective. MMF is teratogenic and needs to be replaced before pregnancy. This change may lead to flares. Our aim was to determine the risk of renal flares in women with LN who switched treatment from MMF to AZA before conception and to evaluate the outcome of their pregnancies. Methods. Medical records of women with LN counselled for pregnancy wish were reviewed. Women receiving treatment with either MMF or AZA (control group), with inactive lupus (SLEDAI4 4) and quiescent LN (serum creatinine