Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT02257359 · ClinicalTrials.gov registry record · Phase 1

Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of Epelsiban in Healthy Female Volunteers

A Phase 1 study, sponsored by GlaxoSmithKline.

Completed
Registry status
Phase 1
Development phase
12
Enrollment target

NCT02257359: Completed Phase 1 study, sponsored by GlaxoSmithKline.

NCT02257359 is a Phase 1 study that has completed, run by GlaxoSmithKline. The registered enrollment target is 12 participants, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (80% lower). According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist →

The verdict

NCT02257359, a Phase 1 study, has completed, sponsored by GlaxoSmithKline.

COMPLETED
Registry status
Phase 1
Development phase
12 participants
Enrollment target

Study Summary

Epelsiban is a potent and selective oxytocin receptor antagonist in development for enhanced implantation rates during in-vitro fertilization (IVF). This study a non-randomized, open label study designed to assess the safety, tolerability and pharmacokinetics of additional repeat doses of epelsiban in healthy females, and will be the first dosing experience of greater than 200 milligram (mg) as a single dose with this compound. Data from this study will inform the selection of doses of epelsiban to be used in future clinical studies. This study will be composed of 3 periods: Screening, Treatment, and Follow-up. The total duration that a subject involved in the study will be up to 6 weeks. At least 2 cohorts of subjects will be enrolled in this study and cohorts will be conducted sequentially. Additional cohorts will be enrolled if determined necessary. A sufficient number of subjects will be screened for the study to obtain approximately 6 evaluable subjects per cohort.

Primary Outcome

Pharmacokinetic parameters including area under the plasma drug (and metabolite) concentration versus time curve (AUC\[0-t\], AUC\[0- infinity\], AUC\[0-tau\]), maximum observed concentration (Cmax), time to maximum observed plasma drug (and metabolite) concentration (tmax), and terminal half-life (t1/2), as data permit, will be analyzed. Blood samples for pharmacokinetic analysis will be collected on Day 1 (Morning pre-dose and 0.5hour(hr), 1 hr, 4 hr, 6hr, 8 hr, 12 hr post morning dose; evenin

Interventions

  • DRUG Epelsiban

Trial Details

FieldValue
Enrollment Target 12 participants
Start Date 2014-12-18
Est. Completion 2015-01-29
Phase Phase 1
GlaxoSmithKline

1,345 total trials

What the finished NCT02257359 record still lists

NCT02257359 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 12 participants, a relatively small participant target, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (80% lower).

The record links to 0 conditions, and to 1 intervention - of which Epelsiban is the first listed.

NCT02257359 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT02257359 about?

NCT02257359 is a clinical study titled "Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of Epelsiban in Healthy Female Volunteers". Epelsiban is a potent and selective oxytocin receptor antagonist in development for enhanced implantation rates during in-vitro fertilization (IVF). This study a non-randomized, open label study designed to assess the safety, tolerability and pharmacokinetics of additional repeat doses of epelsiban ...

What is the current status of trial NCT02257359?

This trial is currently completed. It is a Phase 1 study. The enrollment target is 12 participants. The study started on 2014-12-18. Estimated completion is 2015-01-29.

What interventions are being tested in trial NCT02257359?

The interventions under investigation include: Epelsiban (DRUG).

Who is sponsoring clinical trial NCT02257359?

This trial is sponsored by GlaxoSmithKline, which has 1,345 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT02257359's enrollment target sits among peer trials

12 1852nd of 2000 higher than 90 of 2,000 other Phase 1 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 1 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT02602769 · 12 participants

    Whole Transcriptome Profiling and Metabolic Phenotyping in Children With ROHHAD Syndrome

  • NCT02605421 · 12 participants · Phase 2

    Myeloablative Consolidation Therapy and Tandem Autologous Stem Cell Rescue in Patients With High-Risk Neuroblastoma

  • NCT02619448 · 12 participants · Early Phase 1

    Concurrent Chemotherapy Plus HFR Radiation Therapy in Inoperable NSCLC

  • NCT03311503 · 12 participants · Phase 1

    Phase I/II Trial of Lentiviral Gene Transfer for SCID-X1 With Low Dose Targeted Busulfan Conditioning

Similar registry start date

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

  • NCT07125183 · started 2026-12 · Phase 2

    Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma

  • NCT07292298 · started 2026-11 · Phase 2

    Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates

  • NCT04263285 · started 2026-10 · NA

    Treatment of Depression Post-SCI

Source: ClinicalTrials.gov NCT02257359, the US trial registry maintained by the National Library of Medicine. NCT02257359 (small enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.