Compositions and methods for delaying the incidence of labor

Abstract

The invention provides compositions and methods for delaying the onset of delivery in a pregnant subject, such as a pregnant human subject, that is undergoing or at risk of undergoing preterm labor at a gestational age of from about 24 weeks to about 34 weeks. Using the compositions and methods described herein, such subjects may be administered nifedipine in combination with a prostaglandin F2α (PGF2α) antagonist. Exemplary PGF2α receptor antagonists that may be used for the treatment or prevention of preterm labor as described herein include 1,3-thiazolidine-2-carboxamide compounds, such as (3S)-3-({[(2S)-3-(biphenyl-4-ylsulfonyl)-1,3-thiazolidin-2-yl]carbonyl}-amino)-3-(4-fluorophenyl)propyl L-valinate or a pharmaceutically acceptable salt thereof (e.g., (3S)-3-({[(2S)-3-(biphenyl-4-ylsulfonyl)-1,3-thiazolidin-2-yl]carbonyl}-amino)-3-(4-fluorophenyl)propyl L-valinate hydrochloride. Using the compositions and methods described herein, a subject may be dosed with a PGF2α receptor antagonist and a reduced amount or frequency of nifedipine relative to the amount or frequency of nifedipine that would otherwise be used if the nifedipine were given in the absence of the PGF2α receptor antagonist.

Dependencies are inferred from the claim text.