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CompletedNCT04069117Updated Apr 6, 2022

Follicular Synchronization in PCOS Patients Undergoing ICSI

A Phase 4 interventional study of letrozole 2.5mg (Femara; Novartis Pharma Services, Basel, Switzerland) in Polycystic Ovarian Syndrome, sponsored by Mansoura University Hospital. Completed at 1 site in Egypt. Open to female participants aged 20 Years to 40 Years. Per ClinicalTrials.gov, last updated 2022-04-06.

Sponsored by Mansoura University Hospital · Phase 4, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Feb 2022, 4 years 7 months ago, and no results have been posted to the registry.
Phase
Phase 4
Study type
Interventional
Enrollment
200
Allocation
Randomized
Ages
20 Years to 40 Years
Sex
Female
01

Study summary

The use of GnRH antagonist protocol nowadays is the slandered protocol of controlled ovarian stimulation in patients with poly cystic ovarian syndrome (PCOS) because it decreases the incidence of OHSS(1, 2). However, this protocol may lead to asynchronous growth of follicles with an early dominant follicle specially in PCOS patients(3). In most of cases this phenomenon will affect the IVF outcomes(2, 4) Aromatase inhibitors (AIs) nowadays is recommended to be used for ovulation induction in patients with PCOS (5, 6).It has fewer side effects, and a shorter half-life than clomiphene citrate(CC), and no effect ON the endometrial receptivity. It is used in treating patients with chronic anovulation, unexplained infertility and poor ovarian reserve(7). It acts through decreasing estrogen levels and allows follicle stimulating hormone (FSH) release from the hypothalamus (8, 9). It could be used alone or with combination with human menopausal gonadotropin (HMG) specially in patients with CC resistant(10-13). It also improves the ovarian response to FSH when they are used in combination and it decreases the risk of OHSS (14).

This study aims to evaluate the effect of uses of letrozole in combination with HMG during ovarian stimulation in patients having PCOS undergoing IVF/ICSI on the follicular growth pattern, synchronized growth of follicles, maturity of oocyte and the quality of embryos.

Read the detailed description

Participants in this study will be group of subfertile women undergoing IVF/ ICSI trial and having polycystic ovarian syndrome Inclusion criteria

  1. Ages ≥20 and \<40 years old
  2. Women having the diagnosis of polycystic ovarian syndrome according to Rotterdam criteria (15)
  3. Women who have at least one of the following indications for IVF or ICSI:

    1. Resistance to slandered ovulation induction and life style modification
    2. Tubal factors: unilateral or bilateral tubal obstruction, unilateral or bilateral salpingectomy or tubal ligation
    3. Male factors: oligoasthenozoospermia or obstructive azoospermia Exclusion criteria
  1. Women with unexplained infertility. 2. women with poor ovarian reserve according to Bologna criteria (16). 3. Couples with known chromosomal abnormalities. 4. Women who refuse to participate in this study.

Methods

  • patients will be randomly assigned into two groups (100 patients in each group): letrozole group (study group) and non letrozole group (control group). Treatment assignment will be blinded to patients, physicians, and nursing staff.
  • All patients will receive combined oral pills before stimulation.
  • letrozole 2.5mg twice daily (Femara; Novartis Pharma Services, Basel, Switzerland) will be given for 5 days starting from the second day of menstruation in combination with low dose step up stimulation with recombinant FSH in the study group.
  • Allocated patients will be randomized into either of two groups.
02

Conditions studied

  • Polycystic Ovarian Syndrome
03

In context

Polycystic Ovary Syndrome

944 studies on the registry are indexed under Polycystic Ovary Syndrome; 174 are open to participants now.

This study's enrollment of 200 is above the median of 70 across 685 interventional studies indexed under Polycystic Ovary Syndrome.

Browse Polycystic Ovary Syndrome studies →

Lead sponsor

Mansoura University Hospital is the lead sponsor of 50 studies on the registry; 7 are open to participants now.

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

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Who can participate

Ages eligible
20 Years to 40 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

    1. Ages ≥20 and \<40 years old 2. Women having the diagnosis of polycystic ovarian syndrome according to Rotterdam criteria (15) 3. Women who have at least one of the following indications for IVF or ICSI:

      1. Resistance to slandered ovulation induction and life style modification
      2. Tubal factors: unilateral or bilateral tubal obstruction, unilateral or bilateral salpingectomy or tubal ligation
      3. Male factors: oligoasthenozoospermia or obstructive azoospermia

Exclusion criteria

Exclusion Criteria:

    1. Women with unexplained infertility. 2. women with poor ovarian reserve according to Bologna criteria (16). 3. Couples with known chromosomal abnormalities. 4. Women who refuse to participate in this study.
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
200 participants (actual)

Study arms

  • Active comparator
    • Study group

    It contains 100 patients will undergo ovarian stimulation with letrozole 2.5mg twice daily (Femara; Novartis Pharma Services, Basel, Switzerland) for 5 days starting from the first day of menstruation in combination with low dose step up stimulation with recombinant FSH starting in the third day of menstruation.

    Drug: letrozole 2.5mg (Femara; Novartis Pharma Services, Basel, Switzerland)

  • No intervention
    • Control group

    It contains 100 patients will undergo ovarian stimulation with low dose step up stimulation with recombinant FSH starting in the third day of menstruation

Interventions

  • Drugletrozole 2.5mg (Femara; Novartis Pharma Services, Basel, Switzerland)

    letrozole /antagonist protocol

    Also known as: letroz 2.5mg (Sun Pharmaceuticals Industries Ltd.,India)

06

What researchers measure

Primary outcomes

  1. the number of asynchronized follicles in both groups

    • Asynchronization will considered when there is a difference of at least 2 mm between the dominant follicle and other follicles

    Time frame: 30 min

07

Study locations

1 site
  • Faculty of Medicine
    Mansoura, Dakahlia 050, Egypt
08

References and documents

Publications

  • Al-Inany HG, Youssef MA, Ayeleke RO, Brown J, Lam WS, Broekmans FJ. Gonadotrophin-releasing hormone antagonists for assisted reproductive technology. Cochrane Database Syst Rev. 2016 Apr 29;4(4):CD001750. doi: 10.1002/14651858.CD001750.pub4. PubMed 27126581 ↗
  • Teede HJ, Misso ML, Costello MF, Dokras A, Laven J, Moran L, Piltonen T, Norman RJ; International PCOS Network. Recommendations from the international evidence-based guideline for the assessment and management of polycystic ovary syndrome. Hum Reprod. 2018 Sep 1;33(9):1602-1618. doi: 10.1093/humrep/dey256. Erratum In: Hum Reprod. 2019 Feb 1;34(2):388. doi: 10.1093/humrep/dey363. PubMed 30052961 ↗
  • Wang R, Mol BW. The Rotterdam criteria for polycystic ovary syndrome: evidence-based criteria? Hum Reprod. 2017 Feb;32(2):261-264. doi: 10.1093/humrep/dew287. Epub 2016 Nov 9. PubMed 28119448 ↗
  • Ferraretti AP, Gianaroli L. The Bologna criteria for the definition of poor ovarian responders: is there a need for revision? Hum Reprod. 2014 Sep;29(9):1842-5. doi: 10.1093/humrep/deu139. Epub 2014 Jul 9. PubMed 25008235 ↗
  • Franik S, Eltrop SM, Kremer JA, Kiesel L, Farquhar C. Aromatase inhibitors (letrozole) for subfertile women with polycystic ovary syndrome. Cochrane Database Syst Rev. 2018 May 24;5(5):CD010287. doi: 10.1002/14651858.CD010287.pub3. PubMed 29797697 ↗
  • Zhao Y, Ruan X, Mueck AO. Letrozole combined with low dose highly purified HMG for ovulation induction in clomiphene citrate-resistant infertile Chinese women with polycystic ovary syndrome: a prospective study. Gynecol Endocrinol. 2017 Jun;33(6):462-466. doi: 10.1080/09513590.2017.1292241. Epub 2017 Feb 28. PubMed 28277124 ↗
  • Wang R, Kim BV, van Wely M, Johnson NP, Costello MF, Zhang H, Ng EH, Legro RS, Bhattacharya S, Norman RJ, Mol BW. Treatment strategies for women with WHO group II anovulation: systematic review and network meta-analysis. BMJ. 2017 Jan 31;356:j138. doi: 10.1136/bmj.j138. Erratum In: BMJ. 2022 Oct 24;379:o2436. doi: 10.1136/bmj.o2436. PubMed 28143834 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 6, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04069117
Lead sponsor
Mansoura University Hospital
Responsible party
Mohamed Taman (lecturer, Mansoura University Hospital) — Principal investigator
First posted
Aug 28, 2019
Start date
Aug 1, 2019
Primary completion
Feb 20, 2022
Completion
Feb 20, 2022
Last update
Apr 6, 2022

Study contacts

Mohamed E Taman, MD
principal investigator · Faculty of Medicine - Mansoura University

Oversight

FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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