8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Risk Summary

Based on limited human data and mechanism of action, Sincalide for Injection may cause preterm labor or spontaneous abortion [see Warnings and Precautions (5.4)]. Limited available data with Sincalide for Injection are insufficient to inform a drug-associated risk of adverse developmental outcomes. In animal embryo-fetal development studies in which sincalide was administered to hamsters and rats during the period of organogenesis, no effects were seen at doses comparable to the maximum recommended clinical dose on a mg/kg basis. However, in a prenatal development study in which rats were administered sincalide during organogenesis through parturition, decreased weight gain and developmental delays were observed at a dose 122 times higher than the maximum recommended human dose based on body surface area.

The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively.

Data

Animal Data

There were no effects on embryo-fetal development in hamsters when sincalide was administered subcutaneously at 250 or 750 ng/kg during organogenesis (Gestation Days 7 to 13) at doses up to 0.8 times the maximum recommended dose of 120 ng/kg on a body surface area basis. No effects on embryo-fetal development were observed in Sprague-Dawley rats at subcutaneous doses of 250, 450, or 750 ng/kg from Gestation Days 6 to16, representing 1.0 time the maximum recommended human dose on a body surface area basis. In a separate study at a higher dose of 90 mcg/kg administered subcutaneously to CFY rats from Gestation Day 10 through parturition (representing 122 times the maximum recommended human dose on a body surface area basis), offspring showed decreased growth, behavioral changes, and developmental delays.

8.2 Lactation

Risk Summary

There are no data regarding the presence of sincalide in human or animal milk, the effects on the breastfed infant, or the effects on milk production. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for Sincalide for Injection and any potential adverse effect on the breastfed infant from Sincalide for Injection or from the underlying condition.

8.4 Pediatric Use

The safety and effectiveness in pediatric patients have not been established.

Animal Data

Direct injection of sincalide in neonatal rats reduced milk consumption with the youngest rats exhibiting the greatest sensitivity to this effect. Although safety margins relative to maternal doses cannot be calculated since rat pups were injected directly, the safety margin in the youngest rat pups was less than 0.1 on a body surface area bases compared to the maximum adult clinical dose. At higher doses administered subcutaneously in neonatal rats, transient behavioral changes and small effects on physical developmental milestones such as ear opening, eye opening, and incisor appearance were observed (at doses 10 to 200-fold higher than the maximum recommended human dose on a body surface area basis).

8.5 Geriatric Use

Clinical studies of sincalide did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects.