Pregnancy outcomes in alemtuzumab treated women with multiple sclerosis: a case series.

Data on pregnancy outcome in alemtuzumab-treated women are scarce and derived from safety reports of clinical trials. We report on seven women with overall eight pregnancies during treatment with alemtuzumab in a real-world setting. All pregnancies occurred within 9 months after alemtuzumab treatment, and two of them within 4 months despite patients being informed on pregnancy prevention. We found one congenital cytomegalovirus infection, one spontaneous abortion, one elective abortion due to extrauterine pregnancy, and five live births without congenital abnormalities or birth defects.