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FET in Adenomyosis

Is GnRH Agonist Plus Letrozole a Better Choice Than GnRH Agonist Alone in Adenomyosis Cases Undergoing Frozen Embryo Transfer?

Status
Not yet recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06913075
Acronym
ADY
Enrollment
700
Registered
2025-04-06
Start date
2026-06-25
Completion date
2026-12-23
Last updated
2026-01-26

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

Conditions

Adenomyosis

Keywords

Frozen embryo transfer, Adenomyosis, ongoing pregnancy rate, live birth rate

Brief summary

Purpose of the Study: To compare the effectiveness of GnRH agonist downregulation alone versus GnRH agonist combined with letrozole in improving pregnancy outcomes in women with adenomyosis undergoing frozen embryo transfer (FET). Research Question: Is the combined use of GnRH agonist and letrozole more effective than GnRH agonist downregulation alone in achieving better ongoing pregnancy rates in adenomyosis cases undergoing FET? Hypothesis: Null Hypothesis (H₀): The combined use of GnRH agonist and letrozole is not more effective than GnRH agonist downregulation alone in achieving a higher ongoing pregnancy rate in adenomyosis cases undergoing FET. Study Outcomes: Primary Outcome: Ongoing pregnancy rate at 12 weeks of gestation.

Interventions

DRUGGnRH agonist downregulation

Triptorelin Acetate 3.75mg for two consecutive dosage at 30 days interval

Triptorelin Acetate 3.75mg for two consecutive dosages at 30 days interval) + Letrozole (5 mg once daily for a total of 21 days during the second depot - letrozole stops when Estrogen priming starts

Sponsors

Indira IVF Hospital Pvt Ltd
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
21 Years to 42 Years
Healthy volunteers
No

Inclusion criteria

Diagnosis of adenomyosis confirmed via transvaginal ultrasound as per MUSA criteria History of infertility requiring frozen embryo transfer (FET). Availability of at least one good-quality frozen embryo for transfer

Exclusion criteria

BMI ≥ 30 kg/m2 Presence of endocrine disorders; (uncontrolled diabetes mellitus, / hyperprolactinemia, thyroid dysfunction, Congenital adrenal hyperplasia, Cushing syndrome, or polycystic ovary syndrome Previous major uterine surgery Gestational carrier Fertility preservation

Design outcomes

Primary

MeasureTime frameDescription
Ongoing pregnancy rate12 weeks of gestationPresence of gestational sacs with a heartbeat at the 12th gestational week. The ongoing pregnancy rate will be calculated using the below formula. Ongoing pregnancy rate: (the number of ongoing pregnancy cases/the number of clinical pregnancy cases) × 100%

Secondary

MeasureTime frameDescription
Implantation Rate4 weeks after embryo transferThe number of gestational sacs observed by transvaginal ultrasound at the 6th gestational week per the number of embryos transferred. The implantation rate will be calculated using the below formula. Implantation rate: (The number of gestational sacs observed/ number of embryos transferred) × 100
Live Birth RatePost delivery after completion of 20 weeks of gestationThe number of deliveries that resulted in at least one live birth per 100 Embryo transferred cycle. Live birth rate: (The number of live births / the number of embryos transferred cycle) × 100
Biochemical loss rate4 weeks after embryo transferPregnancies diagnosed only by β-human chorionic gonadotropin detection without a gestational sac visualized by vaginal ultrasound at the 6th gestational week. The biochemical loss rate will be calculated using the below formula. Biochemical loss rate: (the number of biochemical pregnancy loss cases/the number of women per group) × 100%
1st trimester loss12 weeks of gestationFirst-trimester loss refers to the spontaneous loss of a pregnancy occurring before the end of the 12th week of gestation
2nd trimester loss20 weeks of gestationSecond-trimester loss refers to the spontaneous loss of a pregnancy occurring between 13 and 20 weeks of gestation.
Chemical Pregnancy rate4 weeks after embryo transferDetection of a fetal heartbeat on transvaginal ultrasound at the 6th gestational week. The clinical pregnancy rate will be calculated using the below formula.

Countries

India

Contacts

CONTACTTaruna Jhamb, MD
centerhead.udaipur@indiraivf.in+91 9799035674

Outcome results

None listed

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