Impact of IVF Hormonal Therapy on Endometrial Receptivity and Endometrial Senescent Cell Pathological Accumulation
NCT ID: NCT06280560
Last Updated: 2025-02-27
Study Results
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Basic Information
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RECRUITING
60 participants
OBSERVATIONAL
2024-02-01
2025-12-30
Brief Summary
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We hypothesize that the supraphysiologic hormone levels required for both COS+LPS, and HRT may be inducing alterations in endometrial composition and function, specifically the chronic accumulation of senescent cells; either due to an excessive hormonal induction, a lack of clearance due to a deficit of uNKs, or a combination of both, ultimately affecting both endometrial receptivity and decidualization, worsening IVF outcomes.
The in vitro clearance of endometrial senescent cells by selective induction of apoptosis has been found to enhance the decidualization capacity of the rest of Endometrial Stromal Cells (EnSC), which could represent in a future adjuvant strategy to reduce the potentially deleterious effects of supraphysiologic hormone levels and improve reproductive outcomes in IVF patients.
The results derived from this project would have a direct impact on clinical practice. First, the results would allow us to evaluate, based on experimental data, potential endometrial side effects of stimulation protocols commonly used in IVF treatments. In addition, in the case of finding a pathological accumulation of senescent cells affecting endometrial receptivity, we will be able to in vitro evaluate the effectiveness of adjuvant senolytic (drugs designed to specifically remove senescent cells) compounds to in vitro improve the expression of endometrial receptivity markers, as a first step to demonstrate the effectiveness of their use in improving the reproductive outcomes of IVF patients.
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Detailed Description
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Conditions
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Study Design
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CASE_CONTROL
PROSPECTIVE
Study Groups
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Natural Cycle (NC)
No hormonal stimulation
Natural Cycle (NC)
No hormonal stimulation. From day 6 of the menstrual period, follicular growth will be evaluated. As soon as a follicle reaches 17mm in diameter, ovulation test strips will be provided to assess LH levels in the first morning urine. The participant will report the positive and will be scheduled for sampling seven days later. An endometrial biopsy and a blood sample will be obtained 7 days after LH peak (LH+7)
Controlled Ovarian Stimulation (COS) + Luteal Phase Support (LPS)
Hormonal fresh transfer protocol
Controlled Ovarian Stimulation + Luteal Phase Support
Short COS protocol with GnRH antagonist followed by progesterone supplementation. Will be initiated after a negative vaginal ultrasonographic scans to define ovarian quiescence, on days 1 and 2 of the menstrual period. For ovarian stimulation, 150-225 UI /day of FSHrec (GONAL F) will be administered along or in combination with 75 UI/day of HMG (Menopur). From day 6 onwards, HMG/FSHrec will be administered on an individual basis according to the serum E2 levels and transvaginal ovarian ultrasound scans and GnRH antagonist (Orgalutran) 0.25 mg /day is introduced as soon as a follicle of 14 mms diameter has achieved. hCGrec (6500 IU, Ovitrelle) will be administered when 7 or 8 follicles with a maximum diameter of \>17-18 mms will observed. 400 mg of micronized vaginal progesterone will be administered (200 mg twice a day vaginal route), during 5 days. An endometrial biopsy and a blood sample will be obtained 7 days after hCG administration (hCH+7)
HRT programmed artificial cycle
Delayed hormonal transfer protocol
Hormonal Replacement Therapy programmed artificial cycle
6 mg of oestradiol orally administered starting the first day of the menstrual period, followed by an endometrial scan 10-days later, and when a 7 mms triple line endometrium has seen by vaginal ultrasound scan, 800 mg of micronized vaginal progesterone (400 mg twice a day vaginal route), during five days, will be added to the oestrogen therapy. An endometrial biopsy and a blood sample will be obtained on day 5 of progesterone administration (P+5)
Endometrial receptivity reference group
No hormonal stimulation
Endometrial receptivity reference group
Recruited among women belonging to the oocyte donation program and will follow the procedures described above for the Natural Cycle group. No hormonal stimulation. From day 6 of the menstrual period, follicular growth will be evaluated. As soon as a follicle reaches 17mm in diameter, ovulation test strips will be provided to assess LH levels in the first morning urine. The participant will report the positive and will be scheduled for sampling seven days later. An endometrial biopsy and a blood sample will be obtained 7 days after LH peak (LH+7)
Interventions
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Controlled Ovarian Stimulation + Luteal Phase Support
Short COS protocol with GnRH antagonist followed by progesterone supplementation. Will be initiated after a negative vaginal ultrasonographic scans to define ovarian quiescence, on days 1 and 2 of the menstrual period. For ovarian stimulation, 150-225 UI /day of FSHrec (GONAL F) will be administered along or in combination with 75 UI/day of HMG (Menopur). From day 6 onwards, HMG/FSHrec will be administered on an individual basis according to the serum E2 levels and transvaginal ovarian ultrasound scans and GnRH antagonist (Orgalutran) 0.25 mg /day is introduced as soon as a follicle of 14 mms diameter has achieved. hCGrec (6500 IU, Ovitrelle) will be administered when 7 or 8 follicles with a maximum diameter of \>17-18 mms will observed. 400 mg of micronized vaginal progesterone will be administered (200 mg twice a day vaginal route), during 5 days. An endometrial biopsy and a blood sample will be obtained 7 days after hCG administration (hCH+7)
Hormonal Replacement Therapy programmed artificial cycle
6 mg of oestradiol orally administered starting the first day of the menstrual period, followed by an endometrial scan 10-days later, and when a 7 mms triple line endometrium has seen by vaginal ultrasound scan, 800 mg of micronized vaginal progesterone (400 mg twice a day vaginal route), during five days, will be added to the oestrogen therapy. An endometrial biopsy and a blood sample will be obtained on day 5 of progesterone administration (P+5)
Natural Cycle (NC)
No hormonal stimulation. From day 6 of the menstrual period, follicular growth will be evaluated. As soon as a follicle reaches 17mm in diameter, ovulation test strips will be provided to assess LH levels in the first morning urine. The participant will report the positive and will be scheduled for sampling seven days later. An endometrial biopsy and a blood sample will be obtained 7 days after LH peak (LH+7)
Endometrial receptivity reference group
Recruited among women belonging to the oocyte donation program and will follow the procedures described above for the Natural Cycle group. No hormonal stimulation. From day 6 of the menstrual period, follicular growth will be evaluated. As soon as a follicle reaches 17mm in diameter, ovulation test strips will be provided to assess LH levels in the first morning urine. The participant will report the positive and will be scheduled for sampling seven days later. An endometrial biopsy and a blood sample will be obtained 7 days after LH peak (LH+7)
Eligibility Criteria
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Exclusion Criteria
18 Years
45 Years
FEMALE
Yes
Sponsors
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Instituto Valenciano de Infertilidad, IVI VALENCIA
OTHER
Fundación IVI
OTHER
Responsible Party
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Principal Investigators
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Francisco Domínguez Hernández, PhD
Role: PRINCIPAL_INVESTIGATOR
IVI Foundation, Valencia, Valencia, Spain
Locations
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IVI-RMA Valencia Clinic
Valencia, , Spain
Countries
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Central Contacts
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Facility Contacts
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References
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Organization WH. Infertility prevalence estimates 1990-2021. 2023.
Other Identifiers
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PI23/00860
Identifier Type: OTHER_GRANT
Identifier Source: secondary_id
2109-FIVI-087-FD
Identifier Type: -
Identifier Source: org_study_id
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