The present invention concerns compounds and their use in contraception. These compounds are derivatives of zafirlukast and have been found to inhibit CatSper in human sperm cells in low concentrations.

The invention provides α-amino esters of a hydroxypropylthiazolidine carboxamide derivative, (2S)-3-([1,1′-biphenyl]-4-ylsulfonyl)-N-[(1S)-3-hydroxy-1-phenylpropyl]-1,3-thiazolidine-2-carboxamide, as well as salts and crystal polymorphs thereof, that can be used to inhibit prostaglandin F receptor. The invention further encompasses methods of treating disorders such as preterm labor at the early gestational stage by the administration of these substances to a patient in need of treatment.

The invention provides α-amino esters of a hydroxypropylthiazolidine carboxamide derivative, (2S)-3-([1,1′-biphenyl]-4-ylsulfonyl)-N-[(1S)-3-hydroxy-1-phenylpropyl]-1,3-thiazolidine-2-carboxamide, as well as salts and crystal polymorphs thereof, that can be used to inhibit prostaglandin F receptor. The invention further encompasses methods of treating disorders such as preterm labor at the early gestational stage by the administration of these substances to a patient in need of treatment.

The present application features antibodies that bind to human neonatal Fc receptor (FcRn). These anti-FcRn antibodies are useful, e.g., to promote clearance of autoantibodies in a subject, to suppress antigen presentation in a subject, to block an immune response, e.g., block an immune complex-based activation of the immune response in a subject, and to treat immunological diseases (e.g., autoimmune diseases) in a subject. These anti-FcRn antibodies are also useful, e.g., to decrease pathogenic antibody transport across the placenta of a pregnant subject, to increase pathogenic antibody catabolism in a pregnant subject, and to treat an antibody-mediated enhancement of viral disease in a fetus or a neonate.

The present invention relates to a compound of formula (3Z,5S)-5-(hydroxymethyl)-1-[(2′-methyl-1,1′-biphenyl-4-yl)carbonyl]pyrrolidin-3-one O-meth19243yloxime, and/or an active metabolite thereof having antagonist action at the oxytocin receptor and/or vasopressin V1a receptor, to processes for their preparation, pharmaceutical compositions containing them and their use.

An HPC composition and method of treatment for the prevention of PTB and improved neonatal outcomes. The invention provides for a dosing regimen beginning as early as 14 weeks of fetal gestation and dosing regimens of a duration of as much as 25 weeks. The invention provides a high level of exogeneous progestin to endogenous progesterone when it is most needed. The instant invention consistently achieves active levels of HPC which achieve effectiveness. Exemplary dosing regimens comprise an oral administration of HPC in the range of 1,200 mg to 1600 mg, wherein the HPC is administered via a once a day, twice a day, or three times a day administration.

An HPC composition and method of treatment for the prevention of PTB and improved neonatal outcomes. The invention provides for a dosing regimen beginning as early as 14 weeks of fetal gestation and dosing regimens of a duration of as much as 25 weeks. The invention provides a high level of exogeneous progestin to endogenous progesterone when it is most needed. The instant invention consistently achieves active levels of HPC which achieve effectiveness. Exemplary dosing regimens comprise an oral administration of HPC in the range of 1,200 mg to 1600 mg, wherein the HPC is administered via a once a day, twice a day, or three times a day administration.

Spontaneous preterm birth (sPTB) is premature delivery prior to 37 weeks of pregnancy and is a leading cause of infant mortality worldwide. sPTB is associated with a unique gene expression profile. Identified herein are numerous safe and proven therapeutic compositions used for unrelated indications that have the biological effect of reversing, in part, the gene expression profile of sPTB and which can be used in preventative or interventional treatments to prevent, delay, or ameliorate sPTB. The repurposed drugs include several Class A and Class B therapeutics that are regarded as safe or low risk in pregnant subjects.

Spontaneous preterm birth (sPTB) is premature delivery prior to 37 weeks of pregnancy and is a leading cause of infant mortality worldwide. sPTB is associated with a unique gene expression profile. Identified herein are numerous safe and proven therapeutic compositions used for unrelated indications that have the biological effect of reversing, in part, the gene expression profile of sPTB and which can be used in preventative or interventional treatments to prevent, delay, or ameliorate sPTB. The repurposed drugs include several Class A and Class B therapeutics that are regarded as safe or low risk in pregnant subjects.

Methods of treatment for menstrual complications, gestational complications, and to prolong gestation are described. Treatments include administration of a compound related to regulation of gestational progress or uterine contractions.