<p><strong>Pregnancy</strong>: Based on data from animal studies and its mechanism of action, Nivolumab can cause fetal harm when administered to a pregnant woman. In animal reproduction studies, administration of nivolumab to cynomolgus monkeys from the onset of organogenesis through delivery resulted in increased abortion and premature infant death. Human IgG4 is known to cross the placental barrier and nivolumab is an immunoglobulin G4 (IgG4); therefore, nivolumab has the potential to be transmitted from the mother to the developing fetus. The effects of Nivolumab are likely to be greater during the second and third trimesters of pregnancy. There are no available data on Nivolumab use in pregnant women to evaluate a drug-associated risk. Advise pregnant women of the potential risk to a fetus.<br />
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<strong>Lactation</strong>: There are no data on the presence of nivolumab in human milk, the effects on the breastfed child, or the effects on milk production. Because of the potential for serious adverse reactions in the breastfed child, advise women not to breastfeed during treatment and for 5 months after the last dose of nivolumab.</p>