8.1Pregnancy Risk Summary
There are no available data on RYALTRIS or mometasone furoate use in pregnant women to evaluate for a drug-associated risk of major birth defects, miscarriage or other adverse maternal or fetal outcomes. Postmarketing experience with antihistamines, with similar mechanism of action to olopatadine, have not identified a drug-associated risk of major birth defects, miscarriage, or adverse maternal or fetal outcomes. However, there are no published human data specific to olopatadine.
Animal reproduction studies have not been conducted with RYALTRIS. However, animal reproduction studies are available for olopatadine hydrochloride and mometasone furoate. Oral administration of olopatadine hydrochloride to pregnant rats and rabbits caused a decrease in the number of live fetuses at maternal doses approximately 120 and 1600 times the maximum recommended human daily intranasal dose (MRHDID) on a mg/m 2 basis, respectively (see Data) .
In animal reproduction studies with pregnant mice, rats, or rabbits, mometasone furoate caused increased fetal malformations and decreased fetal survival and growth following administration of doses that produced exposures approximately 1 to 16 times the MRHDID on a mcg/m 2 or AUC basis (see Data) . However, experience with oral corticosteroids suggests that rodents are more prone to teratogenic effects from corticosteroid exposure than humans.
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 miscarriages in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Animal Data No reproductive toxicology studies were conducted with RYALTRIS; however, studies are available for olopatadine hydrochloride and mometasone furoate, as described below.
Olopatadine hydrochloride In an oral embryo-fetal development study, pregnant rats were dosed throughout the period of organogenesis at doses up to 600 mg/kg/day. Maternal toxicity, producing death and reduced maternal body weight gain was observed at 600 mg/kg/day (approximately 1200 times the MRHDID on a mg/m 2 basis). Olopatadine produced cleft palate at 60 mg/kg/day (approximately 120 times the MRHDID on a mg/m 2 basis) and decreased embryo-fetal viability and reduced fetal weight in rats at 600 mg/kg/day (approximately 1200 times the MRHDID on a mg/m 2 basis).
In an oral embryo-fetal development study, pregnant rabbits were dosed throughout the period of organogenesis at doses up to 400 mg/kg/day. A decrease in the number of live fetuses was observed at 400 mg/kg/day (approximately 1600 times the MRHDID on a mg/m 2 basis). In peri-/post-natal toxicity studies, pregnant rats received oral doses of olopatadine up to 600 mg/kg/day during late gestation and throughout the lactation period.
Olopatadine produced decreased neonatal survival at 60 mg/kg/day (approximately 120 times the MRHDID on a mg/m 2 basis) and reduced body weight gain in pups at 4 mg/kg/day (approximately 7 times the MRHDID on a mg/m 2 basis). These effects appeared attributable to exposure of pups via the milk as demonstrated in a cross-fostered study in which pups of untreated dams cross-fostered to dams treated with 60 mg/kg/day olopatadine orally during the lactation period exhibited decreased body weight gain.
Mometasone furoate In an embryo-fetal development study with pregnant mice dosed throughout the period of organogenesis, mometasone furoate produced cleft palate at a dose approximately equivalent to the MRHDID (on a mcg/m 2 basis with maternal subcutaneous doses of 60 mcg/kg and above) and decreased fetal survival at approximately 4 times the MRHDID (on a mcg/m 2 basis with a maternal subcutaneous dose of 180 mcg/kg).
No toxicity was observed with a dose that produced an exposure approximately one-half of the MRHDID (on a mcg/m 2 basis with maternal topical dermal doses of 20 mcg/kg and above). In an embryo-fetal development study with pregnant rats dosed throughout the period of organogenesis, mometasone furoate produced fetal umbilical hernia at exposures approximately 20 times the MRHDID (on a mcg/m 2 basis with maternal topical dermal doses of 600 mcg/kg and above) and delays in fetal ossification at a dose approximately 12 times the MRHDID (on a mcg/m 2 basis with maternal topical dermal doses of 300 mcg/kg and above).
In another reproductive toxicity study, pregnant rats were dosed with mometasone furoate throughout pregnancy or late in gestation. Treated animals had prolonged and difficult labor, fewer live births, lower birth weight, and reduced early pup survival at a dose that was approximately equivalent to the MRHDID (on a mcg/m 2 basis with a maternal subcutaneous dose of 15 mcg/kg). There were no findings at a dose approximately equivalent to or less than the MRHDID (on a mcg/m 2 basis with a maternal subcutaneous dose of 7.5 mcg/kg).
Embryo-fetal development studies were conducted with pregnant rabbits dosed with mometasone furoate by either the topical dermal route or oral route throughout the period of organogenesis. In the study using the topical dermal route, mometasone furoate caused multiple malformations in fetuses (e.g., flexed front paws, gallbladder agenesis, umbilical hernia, hydrocephaly) at doses approximately 12 times the MRHDID (on a mcg/m 2 basis with maternal topical dermal doses of 150 mcg/kg and above).
In the study using the oral route, mometasone furoate caused increased fetal resorptions and cleft palate and/or head malformations (hydrocephaly and domed head) at a dose approximately 60 times the MRHDID (on a mcg/m 2 basis with a maternal oral dose of 700 mcg/kg). At approximately 220 times the MRHDID (on a mcg/m 2 basis with a maternal oral dose of 2800 mcg/kg), most litters were aborted or resorbed. No effects were observed at a dose approximately 12 times the MRHDID (on a mcg/m 2 basis with a maternal oral dose of 140 mcg/kg).
