Effectiveness of Orally Dosed Emergency Contraception in Obese Women - UPA — UPA-Obesity  

Obesity Clinical Trial

Official title: Improving the Effectiveness of Orally Dosed Emergency Contraceptives in Obese Women - PK and PD of 30mg and 60mg UPA

Status Completed

Clinical Trial Summary

Obese women are significantly more likely than their normal BMI counterparts to experience failure of orally-dosed emergency contraceptives. Our preliminary data provides evidence for testing a dose escalation strategy in an effort to provide improved efficacy from orally-dosed emergency contraceptives in obese women. More data is needed regarding emergency contraception containing ulipristal acetate. The overall project will be focused on both levonorgestrel (LNG) - and ulipristal acetate (UPA)-containing emergency contraception but this protocol registration is for the UPA aspect of the study procedures.

Clinical Trial Description

Emergency contraception (EC) provides a woman with an additional line of defense against unintended pregnancy following an act of unprotected intercourse. Orally-dosed EC works by delaying ovulation and reduces the risk of pregnancy for a single act of unprotected intercourse by 50-70%. Unfortunately, obese women are significantly more likely than their normal BMI counterparts to experience failure of orally-dosed EC and in some instances EC is equivalent to placebo.

Our preliminary data provides evidence for testing a dose escalation strategy in an effort to provide improved efficacy from orally-dosed EC in obese women. We hypothesize that increasing the dose of orally-dosed EC agents will normalize the pharmacokinetics resulting in the expected treatment effect (delay in follicle rupture) in obese women. In the overall proposal, we plan to perform detailed pharmacokinetic and pharmacodynamic studies of UPA-based EC in obese women and expand upon our preliminary findings of LNG-based EC. This protocol registration is for the UPA aspect of the study procedures focused on the pharmacokinetics and pharmacodynamics of UPA and will include a dose escalation intervention. ;

Related Conditions & MeSH terms

• Contraception
• Emergencies
• Obesity

• NCT number: NCT02859337
• Study type: Interventional
• Source: Oregon Health and Science University
• Status: Completed
• Phase: Phase 4
• Start date: May 30, 2017
• Completion date: November 15, 2023