CClinicalTrials.gg
TerminatedNCT01757249Updated Nov 13, 2013

Pituitary Down-regulation Before IVF for Women With Endometriosis

A Phase 4 interventional study of Combined Oral Contraceptive Pill (Microgynon 30) in Fertility, sponsored by University of Oxford. Terminated at 1 site in United Kingdom. Open to female participants aged 19 Years to 39 Years. Per ClinicalTrials.gov, last updated 2013-11-13.

Sponsored by University of Oxford · Phase 4, Interventional, and Treatment

Why this study was terminated
Unable to recruit sufficient participants
Phase
Phase 4
Study type
Interventional
Enrollment
5
Allocation
Randomized
Ages
19 Years to 39 Years
Sex
Female
01

Study summary

Endometriosis is a hormone dependent disease of women, in which endometrial tissue (the cells which line the uterus or womb) are found outside the uterus (womb). Some women with endometriosis may be infertile. However, treatments for infertility such as in vitro fertilization (IVF) or IVF with intracytoplasmic sperm injection (IVF-ICSI) appear to be less successful, i.e. the pregnancy rates are lower, for women with endometriosis than for women who may be infertile for other reasons.

Since endometriosis is hormone dependent, it has been suggested that suppressing the activity of hormones produced by the ovaries (which affect endometrial growth) may inactivate endometriosis and so increase the chances of pregnancy. Recently it has been proposed that taking the oral contraceptive pill (OCP) for 6 to 8 weeks before IVF or IVF-ICSI treatment could be used for this purpose.

For our study, which is a randomised controlled trial, women with endometriosis meeting the study criteria planning to undergo IVF or IVF-ICSI at the Oxford Fertility Unit will be recruited. Study participants will be randomised into 2 arms: experimental group and control group. The experimental group will be instructed to complete an 8 week course of OCP before beginning standard IVF treatment. The control group do not take any study medication before beginning standard IVF treatment. The IVF or IVF-ICSI treatment for both groups is not altered by participation in the study.

The aim of the study will be to determine if pretreatment with OCP improves IVF or IVF-ICSI success rates, such as live birth and pregnancy rates, in patients who suffer from endometriosis. The study is funded by the Oxford Fertility Unit.

02

Conditions studied

  • Fertility

Browse trials for

03

In context

Endometriosis

901 studies on the registry are indexed under Endometriosis; 259 are open to participants now.

This study's enrollment of 5 is below the median of 64 across 525 interventional studies indexed under Endometriosis.

Browse Endometriosis studies →

Lead sponsor

University of Oxford is the lead sponsor of 794 studies on the registry; 117 are open to participants now.

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

04

Who can participate

Ages eligible
19 Years to 39 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

Participant is willing and able to give informed consent for participation in the study.

  • Female aged 18 to 39 years old.
  • Intending to undergo treatment with a first, second or third cycle of IVF or IVF-ICSI.
  • Diagnosed with any degree of endometriosis or endometrioma.
  • Participants must meet World Health Organisation Group 1 or 2 eligibility requirements for Combined Oral Contraceptive use.

Exclusion criteria

Exclusion Criteria:

The participant does not understand the English language, or has special communication needs. This is because it is impractical to provide, for this small scale study, information sheets and consent forms in other languages except English.

  • The patient has already undergone 3 or more IVF or IVF-ICSI cycles.
  • Patients who are already taking any medication to treat endometriosis such as progestins, OCP, Gonadotrophin Releasing Hormone agonists, danazol, mirena, etc. or who have done so within the last 3 months.
  • Participants who do not meet World Health Organisation Group 1 or 2 eligibility requirements for Combined Oral Contraceptive use.
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
5 participants (actual)

Study arms

  • Experimental
    Group 1 OCP

    Combined oral contraceptive pill (OCP) (Microgynon 30) containing Levonorgestrel/Ethinylestradiol 150/30mcg. Taken orally on a continuous regime for 8 weeks, once a day.

    Drug: Combined Oral Contraceptive Pill (Microgynon 30)

  • No intervention
    Group 2 Control

    Control Group - no intervention

Interventions

  • DrugCombined Oral Contraceptive Pill (Microgynon 30)

    Pre-IVF treatment for 8 weeks

    Also known as: Microgynon 30

06

What researchers measure

Primary outcomes

  1. Live birth rate

    The birth of a live child after 24 gestational weeks

    Time frame: up to 40 weeks following embryo transfer date

Secondary outcomes

  1. IVF Cycle outcomes

    Cancelled cycles, failed cycles - negative pregnancy test, biochemical pregnancy, clinical pregnancy, miscarriage, stillbirth

    Time frame: up to 40 weeks following embryo transfer date

  2. Treatment responses per cycle

    No. of follicles aspirated, No. of oocytes retrieved, No. of cleavage embryos obtained, Total dose and duration of Gonadotrophins

    Time frame: up to one week after egg collection

  3. Number of cases of Ovarian Hyperstimulation Syndrome

    Time frame: Up to 4 weeks after final embryo transfer

  4. Multiple pregnancy rate

    Time frame: Up to 6 weeks after final embryo transfer

  5. Number of ectopic pregnancies

    Time frame: up to 6 weeks after embryo transfer

07

Study locations

1 site
  • NDOG, University of Oxford
    Oxford, OX4 2HW, United Kingdom
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 13, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01757249
Lead sponsor
University of Oxford
Collaborators
Oxford Fertility Unit
Responsible party
Sponsor
First posted
Dec 28, 2012
Start date
Jan 2013
Primary completion
Nov 2013
Completion
Nov 2013
Last update
Nov 13, 2013

Study contacts

Tim Child
principal investigator · University of Oxford

Oversight

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

Not currently enrolling

This study is terminated, as verified in Nov 2013. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion