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  • Letrozole may increase...

Letrozole may increase gestational diabetes risk during Frozen Embryo Transfer in Women With PCOS

Written By : Aditi |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2023-11-10T18:15:36+05:30  |  Updated On 11 Nov 2023 10:44 AM IST
Letrozole may increase gestational diabetes risk during Frozen Embryo Transfer in Women With PCOS
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Data available from previous studies highlights the positive impact of Letrozole in addressing various infertility issues, including anovulatory infertility, polycystic ovarian syndrome (PCOS), unexplained infertility, and endometriosis-related infertility.

A recent study published in Obstetrics & Gynecology by Yuan et al. and colleagues has concluded that Letrozole application & artificial cycle for endometrial preparation in PCOS patients undergoing FET show similar pregnancy outcomes but differ in perinatal results. There are similarities reported between live birth rates and secondary outcomes. The use of Letrozole was associated with a higher risk of GDM. The artificial cycle group had higher singleton birth weight.

In this randomized controlled trial, researchers from the Reproductive Medicine Center of the First Affiliated Hospital of SUN Yat-sen University compared live-birth rates between letrozole application and artificial cycle for endometrium preparation during frozen embryo transfer (FET) cycle among PCOS women.

The primary outcome was the live birth rate per embryo transfer. Secondary outcomes included pregnancy-related outcomes, perinatal outcomes, and maternal complication rates. Assuming α=0.05 and 80% power, a sample size of 186 patients per group was required to demonstrate a difference of 15% in live birth rate: 205 patients were assigned to each group.

Key results from the study are:

  • From 2018-2021, four hundred twenty patients were enrolled.
  • Two hundred ten patients were assigned to the letrozole application group and 210 to the artificial cycle group.
  • There was no difference in the live birth rate (42.4% vs 42.9%).
  • Secondary outcomes had no similarities. The clinical pregnancy, implantation and miscarriage rates were 51.4% vs 56.2%, 51.8% vs 55.8% and 8.6% vs 11.0%, respectively.
  • Singleton's birth weight was higher in the artificial cycle group (3,108±56 g vs 3,301±58).
  • The Letrozole application group had a higher incidence of gestational diabetes mellitus. (14.6% vs 5.6%).
  • There was no difference in maternal complications.

There was no significant disparity in pregnancy outcomes between the Letrozole application and Artificial Cycle for endometrial preparation in PCOS women who underwent Frozen Embryo Transfer. Notably, the risk of Gestational Diabetes Mellitus was higher in the Letrozole application group, and the singleton birth weight was lower in the Artificial Cycle group.

Reference:

Yuan Y et al. Letrozole During Frozen Embryo Transfer in Women With Polycystic Ovarian Syndrome: A Randomized Controlled Trial. Obstet Gynecol. 2023 Nov 1;142(5):1087-1095.


Letrozolegestational diabetesfrozen embryo transferPCOS
Source : Obstetrics & Gynecology
Aditi
Aditi

    BDS, MDS in Periodontics and Implantology

    Dr. Aditi Yadav is a BDS, MDS in Periodontics and Implantology. She has a clinical experience of 5 years as a laser dental surgeon. She also has a Diploma in clinical research and pharmacovigilance and is a Certified data scientist. She is currently working as a content developer in e-health services. Dr. Yadav has a keen interest in Medical Journalism and is actively involved in Medical Research writing.

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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