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Role of Low Dose Injectable Progesterone in Triggering Ovulation

Role of Low Dose Injectable Progesterone in Triggering Ovulation: A Randomized Controlled Trial

Status
Recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06928844
Enrollment
120
Registered
2025-04-15
Start date
2025-04-15
Completion date
2025-08-01
Last updated
2025-04-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Low Dose, Progesterone, Triggering Ovulation

Brief summary

The aim of this study is to evaluate the role of low dose injectable progesterone in triggering ovulation.

Detailed description

Infertility affects approximately 10-15% of couples attempting pregnancy, with no readily identifiable cause found in 15-30% of these patients, resulting in a diagnosis of unexplained infertility. Kol and Itskovitz-Eldor stated that when using GnRH agonist to trigger ovulation in IVF cycles, the LH surge is associated with a rapid rise of progesterone and the attainment of peak E2 levels through the first 12 h after GnRH agonist administration which is followed by a temporary suppression of progesterone biosynthesis and a gradual drop in E2 levels during the 24 h before follicle aspiration. After oocyte retrieval, a second rise in progesterone and continuous fall in E2 are noted, reflecting transitions from follicular to luteal phase in ovarian steroidogenesis. Letrozole (LE) is a nonsteroidal, highly selective oral aromatase inhibitor (AI) that inhibits the synthesis of oestrogen and increases the secretion of endogenous gonadotropin by diminishing negative feedback to stimulate ovulation. Currently, letrozole is widely used as an adjunct for IVF cycles.

Interventions

DRUGProgesterone

Women will receive low dose progesterone 5 mg intramuscularly as a study group. (Letrozole 2.5 mg/day will be given from cycle day 3 onwards for only 5 days).

DRUGPlacebo

Women will receive placebo as a control group. (Placebo 2.5 mg/day will be given from cycle day 3 onwards for only 5 days).

Sponsors

The General Authority for Teaching Hospitals and Institutes
Lead SponsorNETWORK

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender
FEMALE
Age
20 Years to 35 Years
Healthy volunteers
No

Inclusion criteria

* Age from 20 to 35 years. * Infertile women. * Basal follicle-stimulating hormone (FSH) level \<10 mIU/ml.

Exclusion criteria

* Poor ovarian reserve. * Immunological disease. * Endometriosis. * Uterine abnormality. * Body mass index (BMI) \>30 kg/m2. * Endometrial thickness \<8 or \>12 mm on the day of triggering.

Design outcomes

Primary

MeasureTime frameDescription
Incidence of ovulation rates10-12 days of the menstrual cycleIncidence of ovulation rates will be recorded.

Secondary

MeasureTime frameDescription
Follicle stimulating hormone (FSH)levels10-12 days of the menstrual cycleFollicle stimulating hormone (FSH) will be measured on day 3, day 8-10 and day 10-12 of the menstrual cycle, as well as the day of trigger and oocyte retrieval.
Luteinizing hormone (LH)levels10-12 days of the menstrual cycleLuteinizing hormone (LH) will be measured on day 3, day 8-10 and day 10-12 of the menstrual cycle, as well as the day of trigger and oocyte retrieval).
Estradiol (E2) levels10-12 days of the menstrual cycleEstradiol (E2) will be measured on day 3, day 8-10 and day 10-12 of the menstrual cycle, as well as the day of trigger and oocyte retrieval.
Number of oocytes8 days of the menstrual cycleNumber of oocytes will be recorded. Ovulation monitoring will be done from the last day of the cycle until ovulation occurs approximately in the middle of the cycle.
Progesterone levels10-12 days of the menstrual cycleProgesterone levels will be measured on day 3, day 8-10 and day 10-12 of the menstrual cycle, as well as the day of trigger and oocyte retrieval.
Clinical pregnancy rate.One week late from the previous menstrual cycleClinical pregnancy rate will be recorded.
Biochemical pregnancy16 days of the menstrual cycleBiochemical pregnancy will be recorded through a blood pregnancy test on the date of the next menstrual period
Early miscarriage rate16 days of the menstrual cycleEarly miscarriage rate will be recorded.
Mature oocytes16 days of the menstrual cycleMature oocytes will be recorded.

Countries

Egypt

Contacts

Primary ContactAbeer A El Shabasi, MD
abear.elshabacy@gmail.com00201223331182

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026