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CompletedNCT01107093Updated Aug 25, 2010

Comparison of CDB-2914 Versus Placebo in the Prevention of Follicular Rupture Post-luteinizing Hormone (LH) Surge

A Phase 2 interventional study of CDB-2914 (ulipristal acetate) and Placebo in Contraception, sponsored by HRA Pharma. Completed at 2 sites in 2 countries. Open to female participants aged 18 Years to 35 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2010-08-25.

Sponsored by HRA Pharma · Phase 2 and Interventional

Phase
Phase 2
Study type
Interventional
Enrollment
35
Allocation
Randomized
Ages
18 Years to 35 Years
Sex
Female
01

Study summary

Evaluation of the effect of a single dose of CDB-2914, as compared to placebo, administered after the onset of the LH surge on the outcome of the leading ovary follicle:

  • echographic follicle rupture
  • inhibition of follicle rupture
  • luteal phase progesterone levels
  • anovulatory progesterone levels
02

Conditions studied

  • Contraception

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03

In context

Rupture

557 studies on the registry are indexed under Rupture; 97 are open to participants now.

This study's enrollment of 35 is below the median of 72 across 334 interventional studies indexed under Rupture.

Browse Rupture studies →

Lead sponsor

HRA Pharma is the lead sponsor of 14 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 35 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Inclusion criteria

  • Women of good general health aged 18 - 35 years
  • Not at risk of pregnancy
  • Regular menstrual cycles of 24-35 days duration
  • Not pregnant
  • Intact uterus and ovaries
  • Haemoglobin ≥ 11 g/dl
  • Normal laboratory tests and normal TSH
  • Willing to abstain from any use of hormonal contraception until study completion
  • No current use of hormonal contraception and having had at least one complete menstrual cycle (2 menses) since termination of previous hormonal contraception
  • Had at least one complete menstrual cycle (2 menses) following delivery, miscarriage or induced abortion
  • Able to give voluntary, written informed consent, and agreeing to observe all study requirements for 5 complete menstrual cycles

Exclusion criteria

Exclusion Criteria:

  • Current participation in any other trial of an investigational medicine
  • Known hypersensitivity to the ingredients of the test active substances or excipients
  • Suspected hyperplasia or carcinoma of the endometrium
  • Current pregnancy as confirmed by positive serum beta-hCG at screening
  • Desire to get pregnant before the planned end of the study participation
  • Currently breastfeeding
  • Abnormal Pap smear
  • Cancer (past history of any carcinoma or sarcoma)
  • Known or suspected alcoholism or drug abuse
  • Abnormal thyroid status
  • Body mass index > 32
  • Current use of hormonal contraception
  • Use of hormonal emergency contraception since last menstrual period
  • Severe asthma insufficiently controlled by oral glucocorticoids
  • Hereditary galactose intolerance, Lapp lactase deficiency, or glucose-galactose malabsorption
05

Study design

Phase
Phase 2
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double
Enrollment
35 participants (actual)

Study arms

  • Placebo comparator
    Placebo

    Drug: Placebo

  • Active comparator
    CDB-2914

    Drug: CDB-2914 (ulipristal acetate)

Interventions

  • DrugCDB-2914 (ulipristal acetate)

    single oral dose of 30 mg

  • DrugPlacebo

    single oral dose

06

What researchers measure

Primary outcomes

  1. Inhibition of follicular rupture

    Inhibition is calculated as the number of subjects exhibiting no dominant follicle rupture, divided by the total number of subjects having received treatment

    Time frame: within 6 days after treatment intake

Secondary outcomes

  1. Appearance or absence of a corpus luteum

    Time frame: during the 6 days following treatment intake

  2. Growth pattern of leading follicle

    number of cycles exhibiting atresia (diameter decrease ≥25%), or continued growth (diameter increase ≥25%), or interrupted growth (size remains within ±25% of the follicle size at the time of treatment)

  3. Presence or absence of a surge of serum luteinizing hormone (LH) levels

    The onset of an LH surge is defined as the occurrence of the first single serum LH value whose level is at least 50% higher than the mean of the last two previous measurements, or higher than the last previous measurement if only one previous LH level is available.

  4. Menstrual cycle length in comparison to the subject's reported baseline average cycle length and to her placebo-treated cycle length

  5. Incidence of intermenstrual bleeding and treatment-emergent adverse events

  6. Incidence of adverse events and occurrence of abnormal laboratory safety variables in comparison with baseline

  7. Incidence of ovarian cysts after CDB-2914 treatment

07

Study locations

2 sites
  • ICMER
    Santiago, Chile
  • Clinica de PROFAMILIA
    Santo Domingo, Dominican Republic
08

References and documents

Publications

  • Brache V, Cochon L, Jesam C, Maldonado R, Salvatierra AM, Levy DP, Gainer E, Croxatto HB. Immediate pre-ovulatory administration of 30 mg ulipristal acetate significantly delays follicular rupture. Hum Reprod. 2010 Sep;25(9):2256-63. doi: 10.1093/humrep/deq157. Epub 2010 Jul 15. PubMed 20634186 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 25, 2010, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01107093
Lead sponsor
HRA Pharma
First posted
Apr 20, 2010
Start date
May 2008
Primary completion
Dec 2008
Completion
Dec 2008
Last update
Aug 25, 2010

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Aug 2010. You cannot join it, but the record below documents what was studied.

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