Outcomes of Pregnancies Fathered by Solid-Organ Transplant Recipients Exposed to Mycophenolic Acid Products

Context In women, exposure to mycophenolic acid products during pregnancy results in an increase in both miscarriages and birth defects in the live born. Objective To describe the outcomes of pregnancies fathered by transplant recipients who were being maintained on mycophenolic acid products at the estimated time of conception and compare these pregnancies with pregnancies in the general population. Methods Data were collected by the National Transplantation Pregnancy Registry via questionnaires, telephone interviews, and medical records. Results One hundred fifty-two male transplant recipients with exposure to mycophenolic acid products fathered 205 pregnancies (208 outcomes, including 3 pairs of twins). Pregnancy outcomes included 194 live births with a prematurity rate of 10.8%, 14 spontaneous abortions, and no therapeutic abortions or stillbirths. Among the live births, 6 malformations were reported, for an incidence of 3.1%. No pattern of malformations was identified. Conclusion The outcomes of pregnancies fathered by transplant recipients treated with mycophenolic acid products appear similar to outcomes in the general population.