8.1Pregnancy Risk Summary
There are no adequate and well-controlled trials of BEVESPI AEROSPHERE or its individual components, glycopyrrolate and formoterol fumarate, in pregnant women to inform a drug-associated risk. In animal reproduction studies, glycopyrrolate alone, administered by the subcutaneous route in rats and rabbits, did not cause structural abnormalities or affect fetal survival at exposures approximately 2700 and 5400 times from the maximum recommended human daily inhalation dose (MRHDID), respectively.
Glycopyrrolate had no effects on the physical, functional, and behavioral development of rat pups with exposures up to 2700 times the MRHDID. Formoterol fumarate alone, administered by the oral route in rats and rabbits, caused structural abnormalities at 1500 and 61,000 times the MRHDID, respectively. Formoterol fumarate was also embryocidal, increased pup loss at birth and during lactation, and decreased pup weight in rats at 110 times the MRHDID.
These adverse effects generally occurred at large multiples of the MRHDID when formoterol fumarate was administered by the oral route to achieve high systemic exposures. No structural abnormalities, embryocidal, or developmental effects were seen in rats that received inhalation doses up to 350 times the MRHDID. The estimated background risk of major birth defects and miscarriage for the indicated population is unknown.
In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2-4% and 15-20%, respectively. Clinical Considerations Labor or Delivery : There are no well-controlled human trials that have investigated the effects of BEVESPI AEROSPHERE on preterm labor or labor at term. Because beta 2 -agonists may potentially interfere with uterine contractility, BEVESPI AEROSPHERE should be used during labor only if the potential benefit justifies the potential risk.
Data Animal Data Glycopyrrolate In an embryo-fetal development study in pregnant rats dosed during the period of organogenesis from gestation days 6 to 17, glycopyrrolate produced no structural abnormalities or effects on fetal survival; however, slight reductions of fetal body weight in the presence of maternal toxicity at the highest tested dose that was 2700 times the MRHDID (on a mcg/m 2 basis at a maternal subcutaneous dose of 10,000 mcg/kg/day).
Fetal body weights were unaffected with doses up to 270 times the MRHDID (on a mcg/m 2 basis with maternal subcutaneous doses up to 1000 mcg/kg/day). Maternal toxicity was observed with doses 270 times the MRHDID and higher (on a mcg/m 2 basis with maternal subcutaneous doses of 1000 mcg/kg/day and higher). In an embryo-fetal development study in pregnant rabbits dosed during the period of organogenesis from gestation days 6 to 18, glycopyrrolate produced no structural abnormalities or effects on fetal survival; however, slight reductions of fetal body weight in the presence of maternal toxicity at the highest tested dose that was 5400 times the MRHDID (on a mcg/m 2 basis at a maternal subcutaneous dose of 10,000 mcg/kg/day).
Fetal body weights were unaffected with doses up to 540 times the MRHDID (on a mcg/m 2 basis with maternal subcutaneous doses up to 1000 mcg/kg/day). Maternal toxicity was observed with doses 540 times the MRHDID and higher (on a mcg/m 2 basis with maternal subcutaneous doses of 1000 mcg/kg/day and higher). In a pre- and post-natal development study, pregnant female rats received glycopyrrolate at doses of 100, 1000, and 10,000 mcg/kg/day from gestation day 6 through the lactation period.
Pup body weight gain was slightly reduced from birth through the lactation period at a dose 2700 times the MRHDID (on a mcg/m 2 basis with a maternal subcutaneous dose of 10,000 mcg/kg/day); however, pup body weight gain was unaffected after weaning There were no treatment-related effects on the physical, functional, and behavioral development of pups with doses up to 2700 times the MRHDID (on a mcg/m 2 basis with maternal subcutaneous doses up to 10,000 mcg/kg/day).
Maternal toxicity was observed from gestation days 6 to 18 with doses 270 times the MRHDID and higher (on a mcg/m 2 basis with maternal subcutaneous doses of 1000 mcg/kg/day and higher). Formoterol Fumarate In a fertility and reproduction study, male rats were orally dosed for at least 9 weeks and females for 2 weeks prior to pairing and throughout the mating period. Females were either dosed up to gestation day 19 or up until weaning of their offspring.
Males were dosed up to 25 weeks. Umbilical hernia was observed in rat fetuses at oral doses 1500 times the MRHDID (on a mcg/m 2 basis at maternal oral doses of 3000 mcg/kg/day and higher). Brachygnathia was observed in rat fetuses at a dose 8000 times the MRHDID (on a mcg/m 2 basis at a maternal oral dose of 15,000 mcg/kg/day). Pregnancy was prolonged at a dose 8000 times the MRHDID (on a mcg/m 2 basis at a maternal oral dose of 15,000 mcg/kg/day).
Fetal and pup deaths occurred at doses approximately 1500 times the MRHDID and higher (on a mcg/m 2 basis at oral doses of 3000 mcg/kg/day and higher) during gestation. In an embryo-fetal development study in pregnant rats dosed during the period of organogenesis, no structural abnormalities, embryocidal effects, or developmental effects were seen at doses up to 350 times the MRHDID (on a mcg/m 2 basis with maternal inhalation doses up to 690 mcg/kg/day).
In an embryo-fetal development study in pregnant rabbits dosed during the period of organogenesis from gestation days 6 to 18, subcapsular cysts on the liver were observed in the fetuses at a dose 61,000 times the MRHDID (on a mcg/m 2 basis with a maternal oral dose of 60,000 mcg/kg/day). No teratogenic effects were observed at doses up to 3500 times the MRHDID (on a mcg/m 2 basis at maternal oral doses up to 3500 mcg/kg/day).
In a pre- and post-natal development study, pregnant female rats received formoterol at oral doses of 0, 210, 840, and 3400 mcg/kg/day from gestation day 6 (completion of implantation) through the lactation period. Pup survival was decreased from birth to postpartum day 26 at doses 110 times the MRHDID and higher (on a mcg/m 2 basis at maternal oral doses of 210 mcg/kg/day and higher), although there was no evidence of a dose-response relationship.
There were no treatment-related effects on the physical, functional, and behavioral development of rat pups.
