Question: What risks do different forms of immunosuppression (azathioprine, Cyclosporin, azathioprine/Cyclosporin plus steroids) represent in pregnancy for the mother and fetus after kidney transplantation? Retrospective analysis of 40 pregnancies and deliveries. Investigation of abortion -, premature birth rate, fetal retardation, malformation, hospitalization, modus of labour, birth weight, gestational age, perinatal mortality, hypertonia, preeclampsia, anemia, kidney function, rejection crisis, mechanical compression, kidney function after 1 and 5 years postpartum. Recommendation guideline: preconceptional time (contraception) and intensive care in pregnancy. The risk of pregnancy is justified if the presuppositions are correct and the woman would urgently like to have a child.