Evidence map›Paper›PMID 41700008›Full record

ArticleTurkish journal of obstetrics and gynecology2026

The letrozole use in reproductive medicine: Beyond aromatase inhibition - a comprehensive review.

Gerçek Aydın, Şafak Hatırnaz, Ebru Saynur Hatırnaz, Mehmet Bilge Çetinkaya, Muhterem Akdeniz, Nur Dokuzeylül Güngör, Oğuz Güler, Merdan Ali Merdanoğlu, Asiye Uzun, Semra Eroğlu and 17 more

Abstract read
In one paragraph

Article in Turkish journal of obstetrics and gynecology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

27 authors.

Gerçek Aydınİstanbul Health and Technology University Faculty of Medicine, Department of Obstetrics and Gynecology, İstanbul, Türkiye.ORCID 0000-0002-5638-3675
Şafak HatırnazKent University School of Health Sciences, İstanbul, Türkiye.ORCID 0000-0001-8859-0639
Ebru Saynur HatırnazMaltepe University Faculty of Medicine, Department of Histology and Embryology, İstanbul, Türkiye.ORCID 0000-0002-6054-948X
Mehmet Bilge ÇetinkayaMedical Park Samsun Hospital, IVF Center, Samsun, Türkiye.ORCID 0000-0003-2766-6008
Muhterem AkdenizMedical Park Samsun Hospital, IVF Center, Samsun, Türkiye.ORCID 0000-0003-3539-9931
Nur Dokuzeylül GüngörBahçeşehir University Faculty of Medicine, Department of Obstetrics and Gynecology, İstanbul, Türkiye.ORCID 0000-0002-7234-3876
Oğuz GülerPrivate Gazi Hospital, Clinic of Obstetrics and Gynecology, İstanbul, Türkiye.ORCID 0000-0001-7756-4267
Merdan Ali MerdanoğluYunus Emre State Hospital, IVF Center, Eskişehir, Türkiye.ORCID 0000-0002-3267-3504
Asiye UzunMedipol University Faculty of Medicine, Department of Obstetrics and Gynecology, İstanbul, Türkiye.ORCID 0000-0001-8322-6643
Semra EroğluSamsun University Faculty of Medicine, Department of Obstetrics and Gynecology, Samsun, Türkiye.ORCID 0000-0002-9959-9433
Önder TosunUniversity of Health Sciences Türkiye, Zeynep Kamil Maternity and Children Training and Research Hospital, İstanbul, Türkiye.ORCID 0000-0001-8385-5431
Ali BahadırlıBursa City Hospital, Bursa, Türkiye.ORCID 0000-0001-8740-8508
Engin YurtçuDüzce University Faculty of Medicine, Department of Obstetrics and Gynecology, Düzce, Türkiye.ORCID 0000-0002-1517-3823
Betül KeyifDüzce University Faculty of Medicine, Department of Obstetrics and Gynecology, Düzce, Türkiye.ORCID 0000-0002-7472-551X
Huri GüveyKütahya Health Sciences University Faculty of Medicine, Department of Medical Education and Informatics, Kütahya, Türkiye.ORCID 0000-0002-8603-6981
Naziye GürkanMedical Park Samsun Hospital, IVF Center, Samsun, Türkiye.ORCID 0000-0003-1088-018X
Pervin KarlıPrivate Office, Samsun, Türkiye.ORCID 0000-0003-4907-5890
Zehra YılmazPrivate Clinic, Samsun, Türkiye.
Giorgio Maria BaldiniMOMO' FertiLIFE, IVF Clinic, Bisceglie, Italy.ORCID 0000-0002-5061-8007
Aziz İhsan TavuzMomart IVF Center, İstanbul, Türkiye.ORCID 0000-0002-7678-6981
Radmila SparicFaculty of Medicine, University of Belgrade, Belgrade, Serbia.ORCID 0000-0003-0515-1951
Nikoleta TabakovaMedical University of Varna, Varna, Bulgaria.ORCID 0000-0003-4177-3897
Andrea TinelliDepartment of Obstetrics and Gynecology, "Veris delli Ponti" Hospital, CEntro di RIcerca Clinico SALentino (CERICSAL), "Veris delli Ponti" Hospital, Scorrano, Italy.ORCID 0000-0001-8426-8490
Mingju CaoDepartment of Obstetrics and Gynecology, "Veris delli Ponti" Hospital, CEntro di RIcerca Clinico SALentino (CERICSAL), "Veris delli Ponti" Hospital, Scorrano, Italy.ORCID 0000-0003-3380-7620
Seang Lin TaOriginelle Women's Health and Fertility Center, Quebec, Canada.ORCID 0000-0001-5311-1255
Oğuz HatırnazOndokuz Mayıs University Faculty of Medicine, Samsun, Türkiye.ORCID 0009-0003-5903-0888
Michael DahanReproductive Medicine Center, McGill University Faculty of Medicine, Quebec, Canada.ORCID 0000-0002-8121-7708

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Letrozole and other aromatase inhibitors are increasingly recognized as first-line ovulation induction (OI) medications, offering an efficient and physiologic approach to ovarian stimulation that enhances outcomes in reproductive medicine. By selectively inhibiting aromatase and maintaining lower peripheral estrogen levels, letrozole supports mono- or bi-follicular development while reducing the risk of supraphysiologic estradiol exposure seen with traditional gonadotropin regimens. These pharmacological characteristics have contributed to its expanding use not only in OI but also in various assisted reproductive technologies. To evaluate the clinical benefits, effectiveness, and safety of using letrozole in in vitro fertilization (IVF), in vitro maturation (IVM), and OI, with particular attention to reproductive outcomes, ovarian response, endometrial effects, cycle characteristics, and treatment-related adverse events. A comprehensive systematic search covering the period from December 2000 to November 2025 was conducted across major electronic databases including PubMed, Embase, the Cochrane Library, and Google Scholar. The search strategy incorporated predefined keywords related to letrozole, aromatase inhibition, OI, IVF, and IVM. Studies involving randomized controlled trials, observational cohorts, and meta-analyses were included, while non-clinical and non-reproductive data were excluded. Relevant outcomes were extracted and synthesized qualitatively. Letrozole demonstrates broad clinical utility in reproductive medicine, spanning assisted reproductive techniques, ovarian stimulation strategies, and the management of ovarian hyperstimulation syndrome risk, ectopic pregnancy, and endometriosis-related infertility. Its targeted estrogen suppression, cost-effectiveness, and favorable safety profile make it a valuable component of individualized treatment protocols. Nonetheless, further high-quality research is required to refine optimal dosing strategies, identify ideal patient populations, and clarify long-term reproductive and obstetric safety.

Indexed as

assisted reproductive medicineinfertilityin vitro fertilizationin vitro maturationLetrozole

Identifiers

PMID41700008
PMCPMC12963804

What Socratic holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.